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Aftermarket car subwoofer is VERY quiet, can barely hear it even when ear is right up against the speaker
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<blockquote data-quote="Deiimos" data-source="post: 8783967" data-attributes="member: 682903"><p>Pretty simple amp, so not much to check. Do you have any other speakers to test with the amp, like from a home stereo or something?</p><p></p><p>Test each channel individually. Filter switch to OFF. Set the "Input Mode" switch to ST (middle position), then hook up the sub to the left channel, turn up the head unit volume and or phone, and adjust the gain up and down to see if any change / how loud it is. Then test the right channel the same way.</p><p></p><p>Note that older amps, the potentiometers and switch contacts can become oxidized and not make good connection and require cleaning. You can also try, while playing music with the volume up, adjust the Gain potentiometer and all of the switches rapidly to see if any change in sound level. I've had to clean switches in several amps over the years. This may not be the issue at all, but something to keep in mind.</p></blockquote><p></p>
[QUOTE="Deiimos, post: 8783967, member: 682903"] Pretty simple amp, so not much to check. Do you have any other speakers to test with the amp, like from a home stereo or something? Test each channel individually. Filter switch to OFF. Set the "Input Mode" switch to ST (middle position), then hook up the sub to the left channel, turn up the head unit volume and or phone, and adjust the gain up and down to see if any change / how loud it is. Then test the right channel the same way. Note that older amps, the potentiometers and switch contacts can become oxidized and not make good connection and require cleaning. You can also try, while playing music with the volume up, adjust the Gain potentiometer and all of the switches rapidly to see if any change in sound level. I've had to clean switches in several amps over the years. This may not be the issue at all, but something to keep in mind. [/QUOTE]
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Aftermarket car subwoofer is VERY quiet, can barely hear it even when ear is right up against the speaker
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