Accessories Droid 1 audio jack - output only?

LZeitgeist · Mar 9, 2011

I would like to hook up a separate MP3 player and my Droid simultaneously with a stereo 'Y' cable to the aux input on my car stereo, but do I need to prevent the signal coming out of the MP3 player from also being input to the Droid's audio jack?

NiceGuysFinishLast · Mar 10, 2011

AFAIK you won't have an issue.

LZeitgeist · Mar 10, 2011

I appreciate that, but I'm hoping for a more technical confirmation or denial with supporting facts before I just decide to give it a whirl and mess something up.

mobrienjr · Mar 10, 2011

I thought that the headphone jack was output only not output and input

NiceGuysFinishLast · Mar 10, 2011

LZeitgeist said:
I appreciate that, but I'm hoping for a more technical confirmation or denial with supporting facts before I just decide to give it a whirl and mess something up.

Seriously? You can't hurt your phone by putting an audio signal into the headphone jack. At the very worst, the droid MIGHT somehow interpret audio input as clicks from keys on a headset that supports next/last/volume functions... Since you would only have an input on that line from your other MP3 player, presumably you wouldn't simultaneously be playing audio on the droid, so you won't have any issues.... Technical enough? Sheesh.

LZeitgeist · Mar 10, 2011

NiceGuysFinishLast said:
Seriously? You can't hurt your phone by putting an audio signal into the headphone jack. At the very worst, the droid MIGHT somehow interpret audio input as clicks from keys on a headset that supports next/last/volume functions... Since you would only have an input on that line from your other MP3 player, presumably you wouldn't simultaneously be playing audio on the droid, so you won't have any issues.... Technical enough? Sheesh.

Yes, seriously. Why the tone?

It's electronics. Either it's not a problem, or it gets screwed up. There's rarely middle ground. So forgive me if I'd prefer to go on something more than an opinion or a guess before I potentially damage my phone.

And yes, if I'm listening to music and the GPS Nav vocalizes directions, there *will* be simultaneous audio.

If it's that hairy an issue, then I'll go ask the same question on an A/V electronics forum instead. So sorry I wasted your time forcing you to read my post and type a reply.

NiceGuysFinishLast · Mar 10, 2011

LZeitgeist said:
Yes, seriously. Why the tone?

It's electronics. Either it's not a problem, or it gets screwed up. There's rarely middle ground. So forgive me if I'd prefer to go on something more than an opinion or a guess before I potentially damage my phone.

And yes, if I'm listening to music and the GPS Nav vocalizes directions, there *will* be simultaneous audio.

If it's that hairy an issue, then I'll go ask the same question on an A/V electronics forum instead. So sorry I wasted your time forcing you to read my post and type a reply.

GPS nav doesn't utilize headphone based commands. Only the stock (and possibly some aftermarket) music player can recognize them. So that's not an issue.

As for my tone, well, it might have been a bit off, it was early, but I gave you your answer, and you discounted it. My answer is correct, my explanation was not.

LZeitgeist · Mar 11, 2011

NiceGuysFinishLast said:
GPS nav doesn't utilize headphone based commands. Only the stock (and possibly some aftermarket) music player can recognize them. So that's not an issue.

As for my tone, well, it might have been a bit off, it was early, but I gave you your answer, and you discounted it. My answer is correct, my explanation was not.

Actually, you offered yet another opinion without supporting technical facts. That is why I discounted it. If you actually had facts and technical knowledge, you would have provided them instead of reacting as though I was stupid for even asking the question.

I also wasn't concerned about Nav reacting to input voice commands; I was concerned about inputting signal to an output and causing problems or damage.

Anyway, you were wrong with your opinion, so it was wise of me to recognize it as such and not follow it. Here is a technical, factual answer from an audio/video forum, where I apparently should have gone in the first place.

If you hook two ideal outputs together they will tend to short each other out and cause audible distortion. The less ideal they are, the less likely that you'll get distortion.

The best way to hook two outputs to a single input is to build some kind of selector switch or mixer. A usable mixer might be composed of a 1,000 ohm resistor in series with each of the 4 signal leads. Join the two lefts together for the left channel input and likewise for the right. That way the inactive output won't short out or load down the active output. There will be some signal loss, but it will probably be managable.

NiceGuysFinishLast · Mar 12, 2011

LZeitgeist said:
Actually, you offered yet another opinion without supporting technical facts. That is why I discounted it. If you actually had facts and technical knowledge, you would have provided them instead of reacting as though I was stupid for even asking the question.

I also wasn't concerned about Nav reacting to input voice commands; I was concerned about inputting signal to an output and causing problems or damage.

Anyway, you were wrong with your opinion, so it was wise of me to recognize it as such and not follow it. Here is a technical, factual answer from an audio/video forum, where I apparently should have gone in the first place.

You asked if it would cause problems. That's not a problem. It wont hurt your phone. That's what you asked, that's what I answered. I figured you already knew you wouldn't get optimal signal quality. That's what I get for assuming.

Sorry for being a douche, I post too early in the morning sometimes.

mobrienjr · Mar 12, 2011

Nice guy you were not being a douche...the OP was just being rude in the way he was responding to peoples posts....

Accessories Droid 1 audio jack - output only?

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