I have a Samsung Galaxy S6 Active and i'm an electronics technician, i found out that if you connect headphones to the phone, it outputs 1Vrms into 16-600 ohm headphones, which is cool.
However, if you connect it to a stereo speaker system with amplifier, it outputs only 0,5Vrms.
I think they did this to pass human hearing loss prevention tests which measure how many mW the phone supplies to the headphones, thinking that whoever tests this will use a multimeter and a jack, so the phone effectively measures the impedance of the load, and if it's above 1 kilo ohm, the phone will limit it's output to 0,5Vrms. And so i built a little jack male to jack female stereo cable and soldered two 1KOhm resistors between left+ to gnd and between right+ to gnd, and now my phone can output 1V Rms into amplifiers and stereo large speakers with built-in amps.
Related
Being a deaf old git (not totally but my hearing is not as good as I would like), I want to add a pair of apmlified speakers to the PDA so I can hear the voices in my Tom Tom on the Apline clearer since the socket is a 2.5 stero type plug does anyone know which is which on the connections please?
you should read this
http://forum.xda-developers.com/showthread.php?p=1526625#post1526625
I presume your referring to the Garmin 2.5mm to 3.5mm Jack Adaptor?
nice but not what I was really after
I have found a small set of speakers with a 3.5 jack on the end all that concerns me is the standard headset that comes with the IIi is headset and mic I presumed that a common return (usually the last outer connection and I imagine one of the terminals is for sound and one for mic if so it means only mono sound which is different to what I have been lead to believe just need to know which is the sound out connections on the plug so I can buy a 2.5 plug and wire them up.
The other thing I suppose is I could get a bluetooth headset if the sound from the Tom Tom comes over that but that is a unknown also
i was not talking about the post i made in that thread but more about the DIY stuff people were doing
more about the connector wiring here
http://wiki.xda-developers.com/index.php?pagename=Connectors
that would have been exactly what I wanted only thing it wasn't for the Apline unfortunately
Audio connections on himilaya and alpine are identical.
then one of us is wrong as the connections shown are on a FOUR pin connector my Alpine has a working THREE pin connector
not sure about alpine but i had no probs using my old wallaby headset and cradle on alpines sibling called himalaya
Well I seem to be a blind old git because I just noticed there is a inset on the plug and it is a four connection job sorry guys I only recently got given this thing and a quick glace it looks like three connections but one is inset behind the shield
The 2.5mm connector on BOTH Alpine & Himalaya can accomodate either a stereo or a 4-pin 2.5mm connector.
If the PDA detects a 4-pin plug inserted, it assumes the standard wired earphones and mic are connected, and bypasses the internal mic and routes stereo audio to the earphones.
When a normally-wired 2.5mm stereo plug (or adapter to 3.5mm socket) is connected to the PDA, it just outputs stereo audio.
I use a small 2.5mm stereo plug to 3.5mm socket adapter (having shaved away some plastic to enable it to fit, the socket is inset slightly) - to connect up a standard set of ipod-type speakers to the PDA, and it works a treat.
In short, either obtain a small adaptor to standard 3.5mm socket adaptor or if you get a 2.5mm stereo plug that fits nicely (Maplins, Radio Spares etc) and you want to solder it up yourself, it follows the same wiring cnventions as it's bigger 3.5mm brother, so a wiring diagram is just a google away.
Joe
Owning a Samsung Series 5 LCD TV, I've wondered how to get it working with Edifier R501 as there's only 3.5mm single/triple output. Is there a 3.5mm to SPDIF converter or RCA or anything that I didn't know of or missed in Google search directory?
3.5mm plug to RCA is a very common item, if that's what you're looking for?
Nonononono... The TV doesn't have any RCA line in for 5.1 surround speaker. Therefore, I'm just using the stock 3.5mm jack, resulting only 2.1 output. Didn't have time to go out for electronic shop. *sigh
Hi guys,
I bought a new Samsung TV the other day; it has RCA input but no RCA output.
I have some wireless Sennheiser RS170 headphones that connect via headphone jack or RCA output. The headphone jack works fine but mutes the tv speakers, so every time l'm not using them have to remember to unplug them (on the back of a 46" tv!)
However, connecting via RCA, I can leave them plugged in and works ok.
Anyone know how I can get RCA output on the tv, if at all? I seen some scart to RCA output adapters, would this work?
Cheers.
Owen.
if you had a receiver amp you could plug the rca in to that, or I believe if the TV has an optical output (should have) you can get a converter to change the optical out to an rca. http://www.amazon.co.uk/gp/aw/d/B0074JZ8ZW
sorry to say but most new TVs only have an optical out these days to run audio to a sound bar or amp.
you can get a two rca to a 3.5mm jack plug which would fit in the headphone socket of the TV but you would likely have the same prob of muted TV speakers.
Just recently started a new job as a truck driver again and it requires me to be in contact with customers fairly often, I hate the feel of earbuds in my ear and with the truck running I sometimes cannot hear the speakerphone. So I picked up a set of headphones with a wand style mic. My issue is that there are 2 separate plugs ( one for earphones and one for mic) and our phones only have one socket, can I just purchase a 2 into 1 jack and make the headphones and mic function properly?
Technically yes. But you need to make sure the input on the adapter states microphone. Those type of headsets are for computers and telephones.
Something like this.
HTTX 3.5mm Male to Female Headset Splitter Adapter for Headphones With Two separate Headphone / Microphone plugs- 3.5mm 4 position Male to Dual 3 position Female Plugs M/F https://www.amazon.com/dp/B01HAVSPOY/ref=cm_sw_r_cp_apa_OHyFzbW9WK1PS
justin94 said:
Technically yes. But you need to make sure the input on the adapter states microphone. Those type of headsets are for computers and telephones.
Something like this.
HTTX 3.5mm Male to Female Headset Splitter Adapter for Headphones With Two separate Headphone / Microphone plugs- 3.5mm 4 position Male to Dual 3 position Female Plugs M/F https://www.amazon.com/dp/B01HAVSPOY/ref=cm_sw_r_cp_apa_OHyFzbW9WK1PS
Click to expand...
Click to collapse
Yes it does have indicators on it showing a microphone on one plug and a speaker on the other plug.
Hi,
What is the audio DAC (digital to analogue converter) used in the Mi 11? Is it the CS43131 that was recently used by Xiaomi in their Mi dac hi-fi? Or is it the Snapdragon 888 audio dac, if yes what is it? Thanks!
I found the info myself, here it is in case someone is interested in the audio details.
The Mi 11 is not using a dedicated dac. It uses the Qualcomm Aqstic audio. The amp is WSA883X and the DAC is WCD938X. The DAC and the Aqstic Audio Codec is capable of delivering 384 kHz / 32 bit Hi-Fi audio with extremely low distortion to a jack output. The sound is going to be great even for the ones looking for the highest standards.
Explain-me if I am wrong, if you use cord headphones connected with the type-C adapter, the used DAC and amplifier will be the one from the external adapter. I not sure about it, but it, but USB type-C will not pass the analog signal for the speakers.
I believe that what would be important is the DSP (Digital Signal Processor)
PandaKiller said:
Explain-me if I am wrong, if you use cord headphones connected with the type-C adapter, the used DAC and amplifier will be the one from the external adapter. I not sure about it, but it, but USB type-C will not pass the analog signal for the speakers.
I believe that what would be important is the DSP (Digital Signal Processor)
Click to expand...
Click to collapse
Unlike the lightning port on iPhones the usb-c port can use both passive and active adapters. In the case of a passive adapter the phone's dac and amplifier are used. What you described is the case when using an active adapter. The Xiaomi mi dac hifi is a great option in terms of sound quality if you use an active adapter.
Hi guys, I have a Mi 11 Ultra, and I plan to buy DAC models like iBasso DC04 and TempoTec Sonata HD Pro, or TempoTec Sonata E35.
Earphones - KZ ZSX Metal
What do you think, guys?
I have a MI-11 and car audio without Bluetooth but with an AUX -cable with 3,5 male jack. Can I use USB-C splitter to USB-c 3.5 female so I can charge and have audio on my car radio via the AUX cable?
spamblokkie said:
I have a MI-11 and car audio without Bluetooth but with an AUX -cable with 3,5 male jack. Can I use USB-C splitter to USB-c 3.5 female so I can charge and have audio on my car radio via the AUX cable?
Click to expand...
Click to collapse
I do that, works fine
Hello! I got a mi11 a few days ago and I get some noise when reproducing music on my headphones or whatever I connect it to. Have tried several good quality headphones (AKG, Sennheiser and some wireless huawei) and I get the same effect everywhere. Even with my external dac there is no difference.
Could it be a software issue or it has to do with the built in dac??