Quote:
Originally Posted by Gilliland
Then why don't my 2.5mm Seidio headphones work? The only adapter they go through is the HTC-supplied USB adapter. The Treo adapters aren't even in the picture.
If your Treo adapters don't work, then it sounds like your adapter is broken as well. That is a possibility that I've considered - the HTC adapter may be broken by design. If that's the case, then swapping it won't do me a whole lot of good. It sounds like HTC may have done something decidedly non-standard with respect to normal 2.5mm cellphone headphones.
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I promise you that HTC did not do something non-standard by design. It works great for me, I've used it a few times (prefer bluetooth stereo audio tho).
Its possible your adaptor is defective, but I'm still convinced you're using CELLPHONE adaptors and headphones, and not STEREO ones.
Yes, there's a difference.
Allow me to explain (Again?):
First you need to understand this- 2.5mm stereo connectors existed as a standard component before cellphones starting using them for headsets.
Phones use 2 channels of audio just like stereo headphones do, only phones use the second channel (left) for the microphone input. So, they took the 2.5mm headset connector and used one pin for output and one for input (instead of both being output for stereo).
Then, when cell phone manufacturers (motorola, LG, etc...) starting selling STEREO headsets, they added a third pin, which would be the left audio. This way, you could still use this headset on a non-stereo phone as a mono-headset with the mic.
HTC went the other way around... they used the original STEREO pin layout (Right, Left), and then added a third pin for the mic at the end. That's why older HTC headsets (like the Wizard and Apache ones that used 2.5mm) don't work in standard non-stereo phones (they are trying to use the left speaker as teh mic)!
So, basically, the problem sounds like you are using cellphone-type connectors, which the TREO uses, I beleive. You want standard STEREO connectors, not ones made for a phone (Radio shack sells both I think)!
There's a very simple way to see if I'm correct: TRY PULLING OUT THE 2.5MM ADAPTOR SLIGHTLY AS ITS PLAYING. If the sound becomes stereo as you play with it, YOU KNOW THIS IS YOUR PROBLEM!!
TRY IT!