bonesninja
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SSS 18734
5,000+ posts
Dollar Menu Millionaire
TrIpLe PoSt!!!! AAAGHSHHSHURUAAAASKJ!!
SSS 18734
5,000+ posts
Dollar Menu Millionaire
by the way you will need a multimeter and the gain setting tutorial sticky
did the gain tutorial disappear? //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif
lets hope so. every DMM based gain setting guide makes me want to stab someone in the eye...
quick rundown
1.) get a DMM with an AC voltmeter.
2.) turn the HU to 3/4th to full volume.
3.) turn off bass boost and EQ. disconnect speakers at the amplifier (not at the speaker). turn off lowpass and highpass filters.
4.) determine how much AC Voltage should be on the outputs for a given power.
V = (Power * Impedance)^0.5 (square root of the product of power and impedance.) see a wiring guide for multi-sub setups.
5.) adjust the gain on the amp until this voltage appears on the DMM. measure AC voltage at the amp's output.
6.) ok. use a marking device or a camera to mark or otherwise store these "optimal" gain settings. because the actual values will be different.
7.) Ok, now turn the HU down. reattach the speakers. Set some crossover points, like Lowpass @ 80hz for woofers, and highpass @80hz for mids. listen to some music with complex bass lines. turn up the music a bit. adjust gains.
likely you will have some speakers too loud. if the bass is too loud, turn down the gain on the sub amp. if the speakers distort, turn down the gain on the speaker amps.
try doing this over a series of days. anytime you listen to loud music, you're ears will adjust to the levels in an odd way. if you take many short trips, this will become apparent. the settings you made after listening for an extended time will sound different when your ears are fresh...
setting gains for optimal sound is a bit harder then setting gains for optimal power. almost every DMM based gain tutorial forgets that in liue of "hey, pretty numbers".
quick rundown
1.) get a DMM with an AC voltmeter.
2.) turn the HU to 3/4th to full volume.
3.) turn off bass boost and EQ. disconnect speakers at the amplifier (not at the speaker). turn off lowpass and highpass filters.
4.) determine how much AC Voltage should be on the outputs for a given power.
V = (Power * Impedance)^0.5 (square root of the product of power and impedance.) see a wiring guide for multi-sub setups.
5.) adjust the gain on the amp until this voltage appears on the DMM. measure AC voltage at the amp's output.
6.) ok. use a marking device or a camera to mark or otherwise store these "optimal" gain settings. because the actual values will be different.
7.) Ok, now turn the HU down. reattach the speakers. Set some crossover points, like Lowpass @ 80hz for woofers, and highpass @80hz for mids. listen to some music with complex bass lines. turn up the music a bit. adjust gains.
likely you will have some speakers too loud. if the bass is too loud, turn down the gain on the sub amp. if the speakers distort, turn down the gain on the speaker amps.
try doing this over a series of days. anytime you listen to loud music, you're ears will adjust to the levels in an odd way. if you take many short trips, this will become apparent. the settings you made after listening for an extended time will sound different when your ears are fresh...
setting gains for optimal sound is a bit harder then setting gains for optimal power. almost every DMM based gain tutorial forgets that in liue of "hey, pretty numbers".
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