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Amplifiers
Setting gains with phone volume
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<blockquote data-quote="THATpurpleKUSH" data-source="post: 8704327" data-attributes="member: 615398"><p>The output voltage on phones from is at best 1v on a high end phone and about .6v .7v average on most other phones. You will need a line driver to boost the signal out of your phone because the signal is so weak. Without a line driver the signal will be so weak that maxing out the gain on the amp will get you barely any sound output. </p><p></p><p>I use a line driver to run test tones from my phone directly to my amp for spl purposes. My phone has been tested to output around .71v and the line driver bumps it up to about 4 or 5v. At minimum you should be giving the amp a 2.5v signal. </p><p></p><p>Still keep your phone volume below max volume, they will clip just like a regular headunit, just who knows at what point because no one has measured with an oscope and made a video of it.</p></blockquote><p></p>
[QUOTE="THATpurpleKUSH, post: 8704327, member: 615398"] The output voltage on phones from is at best 1v on a high end phone and about .6v .7v average on most other phones. You will need a line driver to boost the signal out of your phone because the signal is so weak. Without a line driver the signal will be so weak that maxing out the gain on the amp will get you barely any sound output. I use a line driver to run test tones from my phone directly to my amp for spl purposes. My phone has been tested to output around .71v and the line driver bumps it up to about 4 or 5v. At minimum you should be giving the amp a 2.5v signal. Still keep your phone volume below max volume, they will clip just like a regular headunit, just who knows at what point because no one has measured with an oscope and made a video of it. [/QUOTE]
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Setting gains with phone volume
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