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Hello,
I'd like to build an AA-battery pack for loading my diamond on the go. (I know there are LiIo-packages on the market with high capacity, but I prefer standard AA-cells)
I've built one for my Loox 720 a few years ago but had the problem, that loading was terminated after the voltage of the package dropped slightly below 5V. It is not so easy to build a package with a standard voltage-converter because of voltage-dropping with too few cells or heat-production with too much cells.
But perhaps the diamond continues loading, even when the voltage drops by - for example 1V, so this would not be an issue anymore.
Sadly, I'am not a specialist on this things and even if the Diamond can handle lower voltage I'am not sure if it can probably do harm to the LiIon-Battery or the electronics within the diamond - don't know, if this is possible with too low voltages.
Perhaps somenone can help - I think a working AA-package for the diamond could be of interrest for other users.
Many thanks in advance!
Regards:
Token42
Take a look at the USB Charging Spec - available here - it clearly defines the operating limits that devices (and chargers) should comply with.
In your case your device would be acting as a dedicated charger (you should put a 200ohmn resistor across the data lines to tell the Diamond that's what you are) and so you should aim for >4.75v for charging currents <0.5A and >2.0v for currents >0.5A. The Diamond will control the current draw and given you're using a battery you have no control over the stability of the minimum voltage - the voltage/capacity curve will be dependent on the type of battery.
Assuming the Diamond is compliant with this spec then it be happy working within the above tolerances. Indeed, in practice you may find it will work beyond them (the charging is controlled within the device hence it can refuse to charge if it is out of spec).
Mathew
MJNewton said:
Take a look at the USB Charging Spec - available here - it clearly defines the operating limits that devices (and chargers) should comply with.
In your case your device would be acting as a dedicated charger (you should put a 200ohmn resistor across the data lines to tell the Diamond that's what you are) and so you should aim for >4.75v for charging currents <0.5A and >2.0v for currents >0.5A. The Diamond will control the current draw and given you're using a battery you have no control over the stability of the minimum voltage - the voltage/capacity curve will be dependent on the type of battery.
Assuming the Diamond is compliant with this spec then it be happy working within the above tolerances. Indeed, in practice you may find it will work beyond them (the charging is controlled within the device hence it can refuse to charge if it is out of spec).
Mathew
Click to expand...
Click to collapse
Many thanks Mathew! This sounds good - if I've understood you correctly I can use lower voltage with batteries able to output high currents. Even "normal" AA-cells should be able to output much more than 0,5A - this seems to be only relevant for USB-ports, so I should be able to go as low as 2V and I'am out of problems. In this case I even not have to build an adapter by myself but can use any cheap "emergency-loader" from shops. (If the resistor should be neccessary, I can add it to the package)
Do you mean, the shop-packages have this resistor built in allready, and can it be dangerous for the device without it?
p.s.: Sorry - I've allways said "loader" - I mean "charger", of course.
Token42 said:
Many thanks Mathew! This sounds good - if I've understood you correctly I can use lower voltage with batteries able to output high currents.
Click to expand...
Click to collapse
In theory, yes, at least to stay within spec. However, the Diamond might not be as tolerant as the spec demands/allows so it's more a case of suck it and see.
Even "normal" AA-cells should be able to output much more than 0,5v
- this seems to be only relevant for USB-ports, so I should be able to go as low as 2V and I'am out of problems.
Click to expand...
Click to collapse
For the spec, yes (although I'm not sure what you mean about USB ports - you are one as far as the Diamond is concerned) however the Diamond battery is 3.7v and, assuming no DC-DC converter, you'll have to stay above that to get any decent rate of charge.
If you are using alkaline batteries then you pay the price with a sloping discharge curve - the voltage drops almost linearly with consumption. This is why lithium batteries are being used in such charger packs because their voltage remains relatively flat and they have a high capacity. Rechargeable NiMH cells would also be a good choice, particularly at higher charging currents.
Edit: They say a picture speaks a thousand words - here are some discharge curves so you can see for yourself.
In this case I even not have to build an adapter by myself but can use any cheap "emergency-loader" from shops.
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Click to collapse
To be honest I'd just buy a ready-made one anyway! Ideally one with a voltage regulator inside it so you can load it with practically any batteries you like.
Mathew
MJNewton said:
To be honest I'd just buy a ready-made one anyway!
Click to expand...
Click to collapse
Yes of course - in this case it is the wisest thing to do - particulary for me.
The reason for me to build my own one for the loox was, that the stock one did not work, (or only for a few minutes, because the loox seems to be very pedantic with the voltage). I have to admit that my own one did not worked too, cause of to much heat-production of the converter.
Seems to be a lot easier with the diamond.
Thanks again!
Why not strip down a car charger and add a few AA cells, all the electronics are already there, I'm pretty sure you could use a variety of old phone car chargers, why not check your drawers.
uniqueboy said:
Why not strip down a car charger and add a few AA cells, all the electronics are already there, I'm pretty sure you could use a variety of old phone car chargers, why not check your drawers.
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Click to collapse
If the diamond really accepts voltages between 3,6 and 5V a car-charger is not neccessary and very ineffective. A pack with 4*AA NIMH would be enough.
Regarding my Loox: I would need at least 10*AA, about 6 of them only to feed the charger. And the problem with voltage-drop is not solved.
How efficient is the charging process? I mean if you charge a 900mah lion battery with a 1.5ah nimh battery will it do it, I thought about 90% of the energy you put in is lost in the internal chemistry, which wouldn't give you more than about a 15% charge.
uniqueboy said:
How efficient is the charging process? I mean if you charge a 900mah lion battery with a 1.5ah nimh battery will it do it, I thought about 90% of the energy you put in is lost in the internal chemistry, which wouldn't give you more than about a 15% charge.
Click to expand...
Click to collapse
Good NIMH-batteries have 2000mAh or more. If you use a LiIon-charger you have the same probs with internal chemistry. If one would loose 90%, no one would by any type of external charger. If you mean the chemistry of the AA's, no one would buy AA's anymore.
With a 2000mAh AA-pack, I think you get about the same charging-result as with a 2000mAh LiIon-charger. But you can put into the AA-pack batterys out of any supermarket in the world.
Token42 said:
Good NIMH-batteries have 2000mAh or more. If you use a LiIon-charger you have the same probs with internal chemistry. If one would loose 90%, no one would by any type of external charger. If you mean the chemistry of the AA's, no one would buy AA's anymore.
With a 2000mAh AA-pack, I think you get about the same charging-result as with a 2000mAh LiIon-charger. But you can put into the AA-pack batterys out of any supermarket in the world.
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Click to collapse
And get what charge% from 0 could you get?, I'm suggesting you would need heavier duty D cells or more to get a full charge, you don't get out anywhere near what you put in.
uniqueboy said:
And get what charge% from 0 could you get?, I'm suggesting you would need heavier duty D cells or more to get a full charge, you don't get out anywhere near what you put in.
Click to expand...
Click to collapse
Youre right, of course - it's not very effective, but not (or not much) less effective than a same size LiIon-package. Probably its only a personal habbit of me to prefere AA-cells. My first PDA was a Psion 3c, the second a Palm-derivate. I liked it very much, to be able to put any AA-cells into this devices.
Most effective way is to swap the device-battery - its my oppinion too. But as long as you can't find LiIon-packs in differnt standard-formats for every device everywhere and they are not building wall-plugs into trees, I find it somewhat nice to have the ability to use AA's or A's.
LiIon have better charging/dicharging-capabilitys and are lighter and smaller, but this does not mean normal standard-cells are totaly crap in comparison, they have developed too.
I would recommend it, when not every device on the market would use LiIon-Batts, perhaps even not swappable - not every device has to be ultra light and ultra small, for me it does not matter so much, if an external charger is somewhat bigger and heavier, if it gives me much more flexibility and is cheaper in long-term usage.
My charger seems to emit a very high pitch noise that increases as the phone has been charging for a while. I am using the stock Samsung charger for the Galaxy Note with the included UK adaptor.
Should i be concerned that the charger is emmiting these noises?
Are these noises caused by the capacitors like in desktop psu's?
Can these noises cause any damage to my Note?
Do your chargers make this high pitched noise?
Many thanks
dbreloaded said:
My charger seems to emit a very high pitch noise that increases as the phone has been charging for a while. I am using the stock Samsung charger for the Galaxy Note with the included UK adaptor.
Should i be concerned that the charger is emmiting these noises?
Are these noises caused by the capacitors like in desktop psu's?
Can these noises cause any damage to my Note?
Do your chargers make this high pitched noise?
Many thanks
Click to expand...
Click to collapse
I wouldn't worry. Modern chargers like the one with the Note, use switched-mode technology, like a pc PSU. Basically, instead of using mains frequency AC conversion in a transformer (50Hz, big transformer), the system uses high frequency (15kHz+) transformers, which can be much much smaller. A vibrating transformer is all you can hear. Not all chargers do it, you're just unlucky. Giving it a tap may or may not help. If its annoying, you could always ask Samsung for another. I change all my wall chargers and PSU's in my bedroom for switched-mode ones as I can't stand the 50Hz humming through my bedside cabinet.
You could always think yourself lucky that you can still hear these frequencies, it's an indication of healthy hearing response.
If it wasn't for this fantastic bit of technology, our power supplies would be bigger than the phone, and PC PSU's would be too heavy to lift without breaking Health and Safety regulations!
I digress sorry lol
dbreloaded said:
My charger seems to emit a very high pitch noise that increases as the phone has been charging for a while. I am using the stock Samsung charger for the Galaxy Note with the included UK adaptor.
Should i be concerned that the charger is emmiting these noises?
Are these noises caused by the capacitors like in desktop psu's?
Can these noises cause any damage to my Note?
Do your chargers make this high pitched noise?
Many thanks
Click to expand...
Click to collapse
It's normal. I hear it in my Nook's charger, Note's charger....Sensation charger...lol.
Ignore it. =)
Like the other user mentioned, be happy that you can hear the buzzing, your hearing range in those frequencies are still intact!
My charger makes that noise when it's unplugged.
madcapmagician said:
My charger makes that noise when it's unplugged.
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Click to collapse
Errr, unplugged charger emitting humming noise?!
I have to thank this thread, I finally found out where that really annoying humming sound comes from. Was unable to localise, but am almost(75%) sure its a charger
Sent from my GT-N7000 using Tapatalk 2
baz77 said:
I have to thank this thread, I finally found out where that really annoying humming sound comes from. Was unable to localise, but am almost(75%) sure its a charger
Sent from my GT-N7000 using Tapatalk 2
Click to expand...
Click to collapse
Yeah.. using high frequency has an advantages.. You can reduce the size of the transformer and eventually your charger size.. I still remember my Nokia 3330 charger which works at 60Hz.. it was a huge charger with small capacity.. lol
the transfo should not be correctable by tapping it, the windings should be firm on the transformer itself, the sound you hear is most likely a crappy capacitor used in a bridge to get AC to DC. I have the same sound about 15kHz coming from a hair clipper charger when the clipper is first being charged. load (I) may be too high for components. try turning your device off before charging, see if the sound is as pronounced
(16G-Grouper(hardware-ER3)-TapTalk2)
I have the same problem on my S4 mini but it's pretty annoing!
Mine too
Hi I've just got the galaxy s9 today and while it's plugged in charging I can hear a very high noise almost like when a computer is "thinking" really hard it's coming from the phone I believe not the charger plug, it sound like a tiny mouse is stuck inside my phone lol an ideas how to get rid of it? I'm using the fast charger and cable that came in the box with the phone, any help in simple terms would be great thanks
This is a reply to a very old post, but I also discovered that a Samsung fast charger (not wireless) emits what I would describe as interference to my portable AM radio, when the charger is within several inches of the radio. mind you, the charger is unplugged from the wall outlet, and is without a charging cable. This is probably a product of the switching supply circuit, and happens within about 60 seconds after being unplugged. As soon as the supply voltage in the charger drains to zero, the noise goes away.
Most active devices have a period of time after power is removed for the voltage inside to reduce to zero, that is why it is recommended, when power cycling (power down then back up) to wait 10 seconds for the voltage to go to zero before plugging back in.
I was using some hi-fi earphones on this phone and was getting enough power from the phone. I have DSPManager equalizer installed and I nearly had to have the volume bar full just to get decent volume. Kind of sucks, but I can't complain too much for how good the price was. Will any developers be working on this chipset?
i think chinese phone could be great and could be compare with this incredible phone
UnlockedNand said:
I was using some hi-fi earphones on this phone and was getting enough power from the phone. I have DSPManager equalizer installed and I nearly had to have the volume bar full just to get decent volume. Kind of sucks, but I can't complain too much for how good the price was. Will any developers be working on this chipset?
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Click to collapse
Which hi-fi earphones you are using?
With your case, I suggest you buy a headphone amp like Fiio E5 to deal with your high impedence headphones.
richteralan said:
Which hi-fi earphones you are using?
With your case, I suggest you buy a headphone amp like Fiio E5 to deal with your high impedence headphones.
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How good are the Fiio E5's? I have been looking for something to give my 8323's a little something extra and does it work with an inline mic?
decepticon said:
How good are the Fiio E5's? I have been looking for something to give my 8323's a little something extra and does it work with an inline mic?
Click to expand...
Click to collapse
It's just a headphone amp. I haven't tried with an mic so I don't know. Don't expect too much from its price point.
But for 99% people E5 will work great. I'm using E5 with my laptop and Grado headphone.
richteralan said:
It's just a headphone amp. I haven't tried with an mic so I don't know. Don't expect too much from its price point.
But for 99% people E5 will work great. I'm using E5 with my laptop and Grado headphone.
Click to expand...
Click to collapse
Not expecting too much, just a little extra "oomph" in power to where I don't have to have the volume up to 100% and it still sound low.
decepticon said:
Not expecting too much, just a little extra "oomph" in power to where I don't have to have the volume up to 100% and it still sound low.
Click to expand...
Click to collapse
E5 can definitely do that.
I just tried connecting my Grado to N4 without the amp. And the volume is perfect for me.
Also tried connect the phone to E5 and does amplify a bit, not a lot though.
There's also an E6 for a few bucks more. The power output spec:
E5:
Output Power: 100mW (32ohms Load) 18mW (300ohms Load)
E6:
Output Power: 150mW (16Ohm), 16mW (300Ohm)
Fiio has a whole line of portable headphone amps. Check them out on Amazon.com
Thanks, I kinda like the look of the E6 more, it's less "iPod shuffle"
The E6 is a good little amp but it will only drive headphones/earphones volume-wise. If you want something that will actually make them sound better, you'll have to step it up to an E7 or an E11. I have an E17 and it's great. The bonus with the E7 and E17 is that you can plug it into your computer via USB and use it as a DAC as well as an amp without installing any drivers.
An amp will not make the source sound better. It takes the existing signal and amplifies it. If it is a poorly designed amplifier, it may even add distortion and make the signal worse. You may hear an improvement if the amplifier on the SOC can not adequately power your headphones (likely due to either high impedance or low sensitivity, or both) and you drive it into distortion. So, if this is the case then you may hear an improvement. Given some of the lack luster results from the GSMArena testing, it may be more than just the amplifier though.
Some phones with USB OTG can use mobile USB DACs, which would likely improve SQ considering the state of sound quality on mobile SOCs. They also tend to have decent quality amplifiers as well. I'm not sure we can do this with the Nexus 4 yet, but it is possible on the GS3 and I'd suspect it's only a matter of time before we get it here as well.
If you are having volume issues its almost certainly because your headphones are low impedance. Lower than the inbuilt amplifier can supply. You can easily verify by plugging in another set of crappy earphones.
As was suggested, amp is your solution or you can use one of the phones that have a more powerful amplifier. I guess some of the HTC ones may have that though I have never used them.
mesasone said:
An amp will not make the source sound better. It takes the existing signal and amplifies it. If it is a poorly designed amplifier, it may even add distortion and make the signal worse. You may hear an improvement if the amplifier on the SOC can not adequately power your headphones (likely due to either high impedance or low sensitivity, or both) and you drive it into distortion. So, if this is the case then you may hear an improvement. Given some of the lack luster results from the GSMArena testing, it may be more than just the amplifier though.
Some phones with USB OTG can use mobile USB DACs, which would likely improve SQ considering the state of sound quality on mobile SOCs. They also tend to have decent quality amplifiers as well. I'm not sure we can do this with the Nexus 4 yet, but it is possible on the GS3 and I'd suspect it's only a matter of time before we get it here as well.
Click to expand...
Click to collapse
Most USB DACs under $100 are cheaply made anyway. So there's no point to further drain your phone battery with a very minimal improvement over sound quality.
If you are really into it, use local FLAC and a small headphone amp. The best balance between mobility and audio.
sexualrug said:
You can easily verify by plugging in another set of crappy earphones.
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Click to collapse
The DAC in the nexus 4 drives high end IEMs easily, using hi end hifi equipment on phones and expecting it to work as Intended is bad logic
Sent from my Nexus 4 using Tapatalk 2
I found the DAC in the US SGS3 to be quite adequate for a mobile chipset, and seeing as the Nexus 4 uses the same one, I see no reason to think any differently. However, I do think the SGS3 has a more powerful amp in it. If your headphones are anywhere from 50 to 300ohm impedance, you will need an amp to get adequate volume (and sound quality) out of them. Obviously a good amp cannot make up for a poor source, but if your headphones are suffering from low power, an amp will help.
My Beyerdynamic Custom One Pros are 16ohm and I still have to turn my Nexus 4 up to ~75% volume to get them at a good listening volume. They sound great though. Obviously they sound better out of my Schiit Lyr, but my HD650s benefit more from the amount of power that bad boy puts out. I actually have to run my COPs through my E17 because the Lyr is so powerful (with a high output impedance) that it causes a low hissing on the COPs no matter the volume.
UnlockedNand said:
I was using some hi-fi earphones on this phone and was getting enough power from the phone. I have DSPManager equalizer installed and I nearly had to have the volume bar full just to get decent volume. Kind of sucks, but I can't complain too much for how good the price was. Will any developers be working on this chipset?
Click to expand...
Click to collapse
What hi-fi earphones are you using?
See the supercurio link on 11-23 in this thread.
BaronInkjet said:
See the supercurio link on 11-23 in this thread.
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Click to collapse
I am never a fan of RighMark Audio Analyzer from when it's written...long time ago.
But people like to compare numbers and RMAA shows some pseudo relationship between numbers and apparent audio quality.
I miss the days when you actually need to LISTEN TO THE ACTUAL DEVICE instead of staring at some numbers.
noobdeagle said:
The DAC in the nexus 4 drives high end IEMs easily, using hi end hifi equipment on phones and expecting it to work as Intended is bad logic
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
I don't really want to get into a discussion on what kind of differences can be heard with what kind of headphones when connected to a phone.
High-end is a very general term and doesn't really mean anything to me. If the built-in amp cannot supply enough current to the low impedance headphones, voltage (and volume) will drop. Since the OP was complaining about volume, using an external amplifier is his solution, or otherwise getting a phone that has a better built in amp. He can easily verify if the volume drop is caused by impedance by plugging in a high impedance headset and seeing if the volume reaches his desired level.
richteralan said:
I am never a fan of RighMark Audio Analyzer from when it's written...long time ago.
But people like to compare numbers and RMAA shows some pseudo relationship between numbers and apparent audio quality.
I miss the days when you actually need to LISTEN TO THE ACTUAL DEVICE instead of staring at some numbers.
Click to expand...
Click to collapse
The frequency response chart pretty much exactly described my first impression when I listened to mine.
Another thing curious is that the stats are quite different from those of the other Qualcom SoC phones (some better, some worse -- including compared to new LG with identical hardware.) I would have thought it to be near identical; most of the previous ones are in a very tight range. Perhaps the difference is due to different parties testing (Supercurio/Anandtech vs. GSMarena)?
BaronInkjet said:
The frequency response chart pretty much exactly described my first impression when I listened to mine.
Another thing curious is that the stats are quite different from those of the other Qualcom SoC phones (some better, some worse -- including compared to new LG with identical hardware.) I would have thought it to be near identical; most of the previous ones are in a very tight range. Perhaps the difference is due to different parties testing (Supercurio/Anandtech vs. GSMarena)?
Click to expand...
Click to collapse
im not sure how they test but the N4 gives some odd results, it changes alot based on the volume you set it to i believe they mention it in the anandtech review from memory, but it seems to click into different 'modes' at different volumes its kinda weird and probably software related.
wait and see what kernel devs cook up maybe.
In case anyone is interested, it's free for a short time. I would have posted this in the free apps thread, but it was closed.
https://play.google.com/store/apps/details?id=com.apptrio.hi_fi_status
Have no idea why, but this app break my fingerprint unlock. After uninstall everything back to normal.
Yes, downloaded it today
Dizzyrul3z said:
Have no idea why, but this app break my fingerprint unlock. After uninstall everything back to normal.
Click to expand...
Click to collapse
Try again? That doesn't happen on any of the three LG V30 I have it installed on.
Hi, just tried this but didn't recognise the standard LG headphones which are high impedance.
Looks like a novelty anyway as no actual settings in app.
Uninstalled.
gazzacbr said:
Hi, just tried this but didn't recognise the standard LG headphones which are high impedance.
Looks like a novelty anyway as no actual settings in app.
Uninstalled.
Click to expand...
Click to collapse
The standard LG headphones aren't high impedance. Sorry.
They are as they trigger the lg dac message
gazzacbr said:
They are as they trigger the lg dac message
Click to expand...
Click to collapse
But the "best" settings are reserved for High Impedance Mode.
That's why @Whiskeyomega has a mod to force HIM with root.
You normally need 50 ohms impedance to trigger high impedance mode. That's why some people bought the 75 ohms jack to mate with their less than 50 ohms headsets (75 seems the least you can buy).
https://www.aliexpress.com/item/DUN...5-ohm-For-Hi-Fi-Audio-player/32813442525.html
or you can buy headsets with 50 ohms or greater to get HIM.
Or you can use root to trigger that through @Whiskeyomega mod.
https://forum.xda-developers.com/lg-v30/themes/fix-impedance-mode-time-t3729043
Yes, as I said, the standard headphones are more than 50 ohms, that's why they trigger the dac message. They do sound better when him is set.
Manually setting the him mode with my sennheiser cx-500i, which are only 18 ohms did not help the quality.
gazzacbr said:
Hi, just tried this but didn't recognise the standard LG headphones which are high impedance.
Looks like a novelty anyway as no actual settings in app.
Uninstalled.
Click to expand...
Click to collapse
My LG headphones which came with my V30+ are NOT high impedance. Are you speaking of the "B&O" branded headphones or the "LG" branded headphones? Depends on where you buy your V30+. In North America, we got "LG" branded headphones, while other places got "B&O" branded headphones . NEITHER are 50 ohms or more and neither trigger High Impedence Mode.
So, I bought high impedance headphones and I also have the 75 ohms adapter if I need it.
Hi, I have LG branded headphones. Bought my phone in Dubai, ARE dual sim version.
My H930 came with B&O headphones and they're definitely not high impedance headphones. And if they are, they're rubbish, because when you plug in proper high impedance headphones, you feel the difference instantly.
LG went full retard here. They brag about quad DAC and then they go and cheap out on headphones. Ridiculous.
The headphones that came with my girlfriend's ancient Galaxy S4 mini sound better than these quasi premium B&O thingies.
Having said that, a cool app this.
Now a question. A friend of mine has a pair of Audio Technica m50x headphones that he wants to sell. They're not high impedance so if I decide to buy them from him I'll need to get an adapter. Besides cranking up the volume to the max, is there any other danger driving low impedance headphones with an adapter in high impedance mode?
Zoombaya said:
My H930 came with B&O headphones and they're definitely not high impedance headphones. And if they are, they're rubbish, because when you plug in proper high impedance headphones, you feel the difference instantly.
LG went full retard here. They brag about quad DAC and then they go and cheap out on headphones. Ridiculous.
The headphones that came with my girlfriend's ancient Galaxy S4 mini sound better than these quasi premium B&O thingies.
Having said that, a cool app this.
Now a question. A friend of mine has a pair of Audio Technica m50x headphones that he wants to sell. They're not high impedance so if I decide to buy them from him I'll need to get an adapter. Besides cranking up the volume to the max, is there any other danger driving low impedance headphones with an adapter in high impedance mode?
Click to expand...
Click to collapse
https://www.toa.jp/soundoh_wiki/index.php?Difference between low and high impedance speakers?
Thanks for the link. All clear now. So I guess I'll order a pair of Soundmagic 50c (or 80c), since everyone's praising them for their quality output.
Does anybody know what the audio is like on the n9. N8 was impressive. Anybody found details on the n9?
Thanks
Sent from my SM-N950F using Tapatalk
I am waiting to hear that too, I ordered mine. I had a V20 before and it was brilliant.
Probably Cirrus Logic CS47L93 as with Exynos S9. GSMArena's measurements are very promising but I take them with a grain of salt. I'm still wondering about output voltage though, as PhoneArena hasn't done the measurement for the Note 9, although it was measured at 0.75V for the S9. That should be decent enough for most consumer-level headphones but still lower than past iPhones or HTCs that had headphone jacks, or LG V-series.
FYL21 said:
Probably Cirrus Logic CS47L93 as with Exynos S9. GSMArena's measurements are very promising but I take them with a grain of salt. I'm still wondering about output voltage though, as PhoneArena hasn't done the measurement for the Note 9, although it was measured at 0.75V for the S9. That should be decent enough for most consumer-level headphones but still lower than past iPhones or HTCs that had headphone jacks, or LG V-series.
Click to expand...
Click to collapse
I am not sure about wired big headphones, but the volume from the headphone jack is pretty good on the bundles AKG's. The HTC 10 etc are something else, but I wasn't impressed with the ourput from iphones or the V series DAC's. Not enough volume.
htc10>Note9
so going from my htc10 to note 9 is a step down?
kindly do let us know.
thanks.
In my opinion, I don't think it's a step down in real audio quality to the ear on the snapdragon. The HTC doesn't perform as good as an external DAC, IMO and I don't notice a big difference on the devices. I had the same questions, being a lifelong HTC guy. But if you've got more sensitive ears than me or different audio profiles you may hear a difference.
I use the ear-studio ES-100 portable DAC and Bluetooth DAC and if you go that route, I highly recommend it.
Sent from my SM-N960U using Tapatalk
well other than audio i need a decent camera and good battery life.
htc is failing in the last department.(Battery)...
Pubbaa said:
so going from my htc10 to note 9 is a step down?
kindly do let us know.
thanks.
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I think audio detail/clarity is pretty similar to the HTC10. The output is much weaker though. I have low impedance earphones so it's not much of a struggle. Higher impedance headphones may not achieve the same volume levels. I know GSM Arena rated the audio very highly if I remember. Not as good as the LG, but close.
well, that is my main concern, maybe it is my imagination but having the headphones pumping out music at half the maximum of the htc10 made me feel good...(i Know i'm weird)
i migrated from s6e+ to the htc10, day and night difference in audio quality between the two.
if the note9 can do better (at least better than the 10) i'd bag it. Oh Well maybe next year sammy
Like the S9, the DAC on the exynos version is probably a custom Cirrus Logic CS47L93 design and very highly regarded in the audiophile world (unlike the AqSTIC DAC in the snapdragon version).
Its almost identical pretty much to the fantastic CS43131: https://www.cirrus.com/products/cs43131/
However the DAC is only half the story. True amplification and impedance plays a big part when driving high powered earphones. But it is the audio tuning that is key. The reason why high end audio separates like Nad, Arcam and Cambridge Audio etc beat the still great quality of a SONOS is down to stellar audio engineering, crossover interference minimisation and high quality internals etc.
Samsung have actually done a decent job here. There is a difference in quality between their snapdragon and exynos (though they also tuned the Aqstic to the best if its capabilities to be fair, but the soundstage on the exynos is more apparent).
HTC 10 used Aqstic as well, but they use a Class D amp alongside it. Previously they only depended on using the integrated DACs for their SoC, usually with a Class D amp at ~1V. The Mediatek devices had a Wolfson DAC and the results were pretty comparable between them. That said, some reviewers did note that HTC's headphone output has clipping distortion at maximum volume (although it is said to be blaringly loud). I had the HTC Butterfly s before that and despite GSMArena giving it an outstanding audio, and it had this issue along with hissing. Its volume isn't particularly high either, and according to PhoneArena its output was only 0.35V, which is odd for an HTC. Also, its headphone jack wasn't very durable and got damaged when the cable got strained.
I'm still curious to see measurements from the Snapdragon Note 9 and the output voltage of the Note 9. S9/S9+ is 0.75V. I think the volume is excellent for IEMs, but for over-ear headphones it is still little low. Audio-Technica MSR7 is quite loud, but the Takstar Pro 82 and 1More MK802 still require a fair bit of volume to match it - all are 32 ohms. I also used the Sony Xperia Z5 which also had only 0.35V headphone output, but it was louder than the HTC at max volume without any bass clipping distortion. MSR7 was quite loud at maximum volume but the other two were borderline in terms of volume. The overall sound was brighter with a slight roll-off in the bass. Quite a few users complained about the DAC but I thought it wasn't too bad. I think the Note 9's is less brittle-sounding and more subtle with the treble, but still detailed. The headphone jack was also more durable than the HTC's although I've had an occasion where it temporarily failed on me and I needed to use SoundAbout to force detection (there were many complaints of such happening to Xperia phones). I'm wondering if Samsung Galaxy headphone jacks are more durable?
FYL21 said:
HTC 10 used Aqstic as well, but they use a Class D amp alongside it. Previously they only depended on using the integrated DACs for their SoC, usually with a Class D amp at ~1V. The Mediatek devices had a Wolfson DAC and the results were pretty comparable between them. That said, some reviewers did note that HTC's headphone output has clipping distortion at maximum volume (although it is said to be blaringly loud). I had the HTC Butterfly s before that and despite GSMArena giving it an outstanding audio, and it had this issue along with hissing. Its volume isn't particularly high either, and according to PhoneArena its output was only 0.35V, which is odd for an HTC. Also, its headphone jack wasn't very durable and got damaged when the cable got strained.
I'm still curious to see measurements from the Snapdragon Note 9 and the output voltage of the Note 9. S9/S9+ is 0.75V. I think the volume is excellent for IEMs, but for over-ear headphones it is still little low. Audio-Technica MSR7 is quite loud, but the Takstar Pro 82 and 1More MK802 still require a fair bit of volume to match it - all are 32 ohms. I also used the Sony Xperia Z5 which also had only 0.35V headphone output, but it was louder than the HTC at max volume without any bass clipping distortion. MSR7 was quite loud at maximum volume but the other two were borderline in terms of volume. The overall sound was brighter with a slight roll-off in the bass. Quite a few users complained about the DAC but I thought it wasn't too bad. I think the Note 9's is less brittle-sounding and more subtle with the treble, but still detailed. The headphone jack was also more durable than the HTC's although I've had an occasion where it temporarily failed on me and I needed to use SoundAbout to force detection (there were many complaints of such happening to Xperia phones). I'm wondering if Samsung Galaxy headphone jacks are more durable?
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some good points of note here- see what i did there lol! . Also we must not forget how a more powerful headphone amp may have a hit on the battery as its essentially providing more power to the more hungry headphones available in the wilderness. The Note 9 is marketed more or less with the business user in mind. Battery priority (and we can debate til the cows come home about battery!) seems to be favouring other areas and its wired audiophile capabilities are not a main selling point...
Jonathan-H said:
I am not sure about wired big headphones, but the volume from the headphone jack is pretty good on the bundles AKG's. The HTC 10 etc are something else, but I wasn't impressed with the ourput from iphones or the V series DAC's. Not enough volume.
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Then you should know about how to "trick" the LG phones with Quad DACs built-in into switching to their louder modes. The modes are: Normal device (lowest volume), Aux/External Device Detected (next louder), and High Impedance Mode (aka "HIM", the loudest).
How do you do this? There's a couple ways. If you want it just a LITTLE louder (Aux mode), connect the male side of a male 3.5mm to female 3.5mm adapter into the LG phone, and then connect the headphone jack into the female side of the adapter. Boom! Instant Aux mode!
Not loud enough?? lol Then buy a high impedance adapter off eBay like this one (MUST be the 75 ohm, or higher, but 75 ohm is better). This will put the phone into HIM and drive headphones up to 600 ohms. Just do the same process mentioned above for Aux.
RockStar2005 said:
Then you should know about how to "trick" the LG phones with Quad DACs built-in into switching to their louder modes. The modes are: Normal device (lowest volume), Aux/External Device Detected (next louder), and High Impedance Mode (aka "HIM", the loudest).
How do you do this? There's a couple ways. If you want it just a LITTLE louder (Aux mode), connect the male side of a male 3.5mm to female 3.5mm adapter into the LG phone, and then connect the headphone jack into the female side of the adapter. Boom! Instant Aux mode!
Not loud enough?? lol Then buy a high impedance adapter off eBay like this one (MUST be the 75 ohm, or higher, but 75 ohm is better). This will put the phone into HIM and drive headphones up to 600 ohms. Just do the same process mentioned above for Aux.
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Adds more hardware into the signal path thus creating potential for static and getting a less clean background. I'd rather have less volume with clean signal than distortion or clipping.
@rbiter said:
Adds more hardware into the signal path thus creating potential for static and getting a less clean background. I'd rather have less volume with clean signal than distortion or clipping.
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Potential, maybe. But I was doing the Aux method for several months on my LG V30, and I never heard ANY kind of static or distortion at all. The pros by far outweigh the cons here. Having that extra amp power strongly benefits the sound coming through your headphones.
RockStar2005 said:
Potential, maybe. But I was doing the Aux method for several months on my LG V30, and I never heard ANY kind of static or distortion at all. The pros by far outweigh the cons here. Having that extra amp power strongly benefits the sound coming through your headphones.
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Having a low noise floor and ample headroom far outweigh potentials like static or loss of hearing because I want cannons, not speakers on my ears. Plus, I have a portable amp, JDS Labs CD5 which can make my Beyerdynamics COP or 770pro 250 ohms rattle my chest if I want to lose my hearing. ?
@rbiter said:
Having a low noise floor and ample headroom far outweigh potentials like static or loss of hearing because I want cannons, not speakers on my ears. Plus, I have a portable amp, JDS Labs CD5 which can make my Beyerdynamics COP or 770pro 250 ohms rattle my chest if I want to lose my hearing.
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lol
That's always another option too, but the convenience that comes with only having one device should be considered too. And the V30's Quad DAC is pretty amazing. It was able to match up with my old $300 Oppo HA-2 amp/DAC device as well.
I got the DT 1770 Pro a few months ago and LOVE it too! Beyerdynamic makes some fantastic headphones!!
RockStar2005 said:
lol
That's always another option too, but the convenience that comes with only having one device should be considered too. And the V30's Quad DAC is pretty amazing. It was able to match up with my old $300 Oppo HA-2 amp/DAC device as well.
I got the DT 1770 Pro a few months ago and LOVE it too! Beyerdynamic makes some fantastic headphones!!
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My V20 is my DAP now. Plenty of volume with built in amp. The CD5 is pretty compact. Able to rubber band it with a phone easily but I've hardly used it since the V20. Yeah. I need to get some Beyerdynamics 600ohm or open headphones. I like both of mine but want something a little more airy or different.
@rbiter said:
My V20 is my DAP now. Plenty of volume with built in amp. The CD5 is pretty compact. Able to rubber band it with a phone easily but I've hardly used it since the V20. Yeah. I need to get some Beyerdynamics 600ohm or open headphones. I like both of mine but want something a little more airy or different.
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Yeah the volume I get from HIM is just right for me too ftw.
Yes the Quad DAC has made things a bit easier. I don't know if my next phone will be LG but if it's not I will very likely just get this bad boy........the Radsone ES100, which several ppl on Head-Fi and Amazon customer reviewers have stated sounds better than their former wired setup (with amp/DAC). I think the secret is that it has a DUAL DAC setup, and LDAC ftw. We'll see. Or else the wired Sabaj Da3, which several ppl have claimed outdoes the AudioQuest DragonFly Red. Though with the latter (Da3) I would have to carry my charger with me if I go long distance or into the city which I frequently do. lol
I've never tried any of their 600 ohm ones. I went through MANY headphones over the last 4 years to get to where I'm at now. I'm in NO hurry to upgrade anytime soon, though if I did, it would most likely be the MrSpeakers AEON Flow closed, or else Esther-C. I travel by train into the city a lot as I'd mentioned, so open-back doesn't work for me. lol
Do any of those amps have the Asahi Kasei 4458 or 4490? I would love to hear the 4490s in a phone tuned proper. I have a microprocessor with the 4458 and it is damn good. And the 4490 is better.
I wonder is Samsung peeks over Motorola's shoulder. Battery mods would actually be pretty cool for note series. An extra few mm ergonomic battery mods would serve as a good base for sketching and drawing on a tablet especially. The note9 would rock the boat with Dex and a decent 1080p projector. Stackable mod with speakers. Or Asahi Kasei 4490/4458 DAC headphone amp.
With battery mods that can easily swap batteries to recycle, make them stackable and polish Dex even more along with other endeavors. Hear me Samsung? Good hardware and software long term ideas. It will be done.
Sorry I am reading the Paris Agreement. ???