Uhhh,... more volume please!!!!!

tsitalon1

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because it's my job to know these things. I noticed that sound quality was lacking so I ran it through my Audio Precision. I can see where the amp maxes on the distortion graphs. we're looking at about 3.8mW of clean power. my iPod Touch makes about 4.1mW. Not a huge difference, but enough to notice on the graphs. If the amp weren't being driven to it's max then the distortion curve wouldn't shoot up to 10% THD at 4mW.

This is exactly what we needed to know. Thanks! Though this does really suck.

I do have a question on the lower impedence headphones. Being lower impedence (less resistance) wouldn't that cause the amp to distort earlier due to the greater load?
 

Superjay

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not necessarily, although it will draw more current, thereby draining the battery quicker... think Ohm's Law. More power has to come from somewhere. It should be negligible, though.
 

Kias

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http://noisebuster.net/over-the-head-features.html

Get some of these to mow your yard with! It's very quiet inside your head when you put these on and fire ' em up! Then you can plug in your droid and actually turn the volume down.. And it'll actually help save your ears!

I have a set of these at work for when I fire up the gpu to test the circuit boards. Awesome!

Sent from my Droid using Tapatalk
 

JoeProcopio

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because it's my job to know these things. I noticed that sound quality was lacking so I ran it through my Audio Precision. I can see where the amp maxes on the distortion graphs. we're looking at about 3.8mW of clean power. my iPod Touch makes about 4.1mW. Not a huge difference, but enough to notice on the graphs. If the amp weren't being driven to it's max then the distortion curve wouldn't shoot up to 10% THD at 4mW.

nice comeback!!!!!!!!!!:D love the facts!
 

Kias

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I noticed that sound quality was lacking so I ran it through my Audio Precision. .

Which AP model did you run it through? How did you get a ref sig on the droid?

My nerdy mind was just wondering...

Sent from my Droid
 

Superjay

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I noticed that sound quality was lacking so I ran it through my Audio Precision. .

Which AP model did you run it through? How did you get a ref sig on the droid?

My nerdy mind was just wondering...

Sent from my Droid

I used my AP system 1. it's a bit old, but was just calibrated about 6 months ago. I used a recorded test tone and sweep tone for testing. I got them from the AP so the computer sees the right signals. I cheated a bit, but I didn't feel like removing the amp chip to test it.
 

Kias

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Ooooops! Somehow I emailed my response to the webmaster@here! LOL Sorry webmaster... Goofy phone.

Here's what I thought I posted earlier!

----

That's cool! I was just sort of wondering if you had actually took your phone apart to inject the signal, in which case I would've given you huge props as I wouldn't of had enough nerves to do that! Well, unless someone else purchased the phone for me to take apart. :)
 

Kias

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This is how I make the volume louder on my droid. I just tape this to the back of the phone and go!

amp.jpg


Man, I need to dust that thing!
 
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