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<blockquote data-quote="Etac" data-source="post: 2145674" data-attributes="member: 570589">im running two amps - 4 x 75 interior and 250 x 2 subs (both rms ratings) - i didnt use to have this problem with my old headunit (sony) but when i installed my new headunit (alpine) and had to be hooked directly to the batterymy problem is the tweeters begin to crack/distort hard at like 70% volume but they didnt use to do this.. my speakers defently can handle the power cause i can bridge the channel and they&#039;ll still play fine (up to the same volume point) but a lot louder and clearer then what they&#039;re cracking at unbridged.. they&#039;re also defently cracking at notes towards the lower freq they play (cross over is at 5K) so i guess even tho a tweeters doesnt use as much power as a midrange speaker/sub this is where it would require teh most...my preouts are 2 volts on the headunit but i cant set my amplifer gain at 2 volts like i used too cause of the distortion.. could this possibly do with a voltage drop?&nbsp; im not running a cap and stock alternator - but got the biggest battery i could fit in my car.. i think the alpine headunit draws more power and my electrical system has taken a beating for awhile.</blockquote>

[QUOTE="Etac, post: 2145674, member: 570589"] im running two amps - 4 x 75 interior and 250 x 2 subs (both rms ratings) - i didnt use to have this problem with my old headunit (sony) but when i installed my new headunit (alpine) and had to be hooked directly to the battery my problem is the tweeters begin to crack/distort hard at like 70% volume but they didnt use to do this.. my speakers defently can handle the power cause i can bridge the channel and they'll still play fine (up to the same volume point) but a lot louder and clearer then what they're cracking at unbridged.. they're also defently cracking at notes towards the lower freq they play (cross over is at 5K) so i guess even tho a tweeters doesnt use as much power as a midrange speaker/sub this is where it would require teh most... my preouts are 2 volts on the headunit but i cant set my amplifer gain at 2 volts like i used too cause of the distortion.. could this possibly do with a voltage drop? im not running a cap and stock alternator - but got the biggest battery i could fit in my car.. i think the alpine headunit draws more power and my electrical system has taken a beating for awhile. [/QUOTE]

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