amp gain
01-28-2006, 12:30 PM
#1
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amp gain i have a 1200 watt rockford amp, two channel. when i turn up the gain on one channel that sub sounds great, but when i turn up the other channel both subs sound like complete ****. whats this? it doesn't matter which channel is up, but as soon as the other is turned up they both sound like ****. and its not even when the gain is turned up all the way, it happens as soon as the second channel is turned up about a quarter of the way. very annoying.
any thoughts??
any thoughts??
01-31-2006, 03:26 PM
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The problem is not with your amplifier, but with your system configuration.
What your hearing is a classic wave interference pattern. The sound waves from the second subwoofer are cancelling out part of the sound from the first. This is only noticable at low frequencies. This is why most stereo systems have only one sub channel, regardless of the number of subwoofers connected.
The purpose of stereophonic sound is used to provide directionality to the audio. The slight differences between the right and left channels creates an illusion that the sound is coming from a location directly in front of you (or from some other specific location). Low bass frequencies are omni-directional so really aren't enhanced by stereophonic techniques.
If the amp supports it, bridge the 2 channels and run both subs off of it.
What your hearing is a classic wave interference pattern. The sound waves from the second subwoofer are cancelling out part of the sound from the first. This is only noticable at low frequencies. This is why most stereo systems have only one sub channel, regardless of the number of subwoofers connected.
The purpose of stereophonic sound is used to provide directionality to the audio. The slight differences between the right and left channels creates an illusion that the sound is coming from a location directly in front of you (or from some other specific location). Low bass frequencies are omni-directional so really aren't enhanced by stereophonic techniques.
If the amp supports it, bridge the 2 channels and run both subs off of it.
Last edited by HiTechGent; 01-31-2006 at 03:46 PM.
02-01-2006, 02:46 PM
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wow, you think thats really the problem?
i used this amp before and it seemed fine, but i'm not sure if i had the gain up enough, also it was used with subs in a different box.
pretty interesting diagnosis though.
i used this amp before and it seemed fine, but i'm not sure if i had the gain up enough, also it was used with subs in a different box.
pretty interesting diagnosis though.