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Turn down the EQ on the H.U. Like stated, you will likely want it as flat as possible. I think it would be ok if you increased a little, but not as much as you are doing. Turn the other levels down and see if that helps at all. Also if you have a "source level adjustment" like for a ipod and you turn the volume up on that it will also show distortion earlier.

2006 GMC Yukon
Pioneer HU

SHCA ran throughout

Crescendo BC3500

One 18 AA Mayhem in a 4th order

ZED Levithian 6 channel

Rainbow Dual 6.5 comps ran Active
matt142-1-1.jpg
http://www.stevemeadedesigns.com/board/topic/155628-matt14s-yukon-mayhem-in-a-4th-ordernew-amps-and-bats/page-3

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Just take all those levels and back them off 6db. Make the same curve but keep all the levels at no more than +1db or 0db if you can.

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1. Start from scratch, eq flat, bass boost off and ipod level normal, loudness off.

2. Check the amp bass boost too on any amps, they should be off.

3. find the headunit max outut using the 0db tones. 40hz and 1k.

4. Once you have those, set the amps useing the -5db tone for mids and -10 for subs.

6. then adjust your eq curve but like i said, just cut the middle freq and leave the lows and highs no more than 0db.

The curve should only be cutting frequencies.. Don't turn on any bass boost or adjust input levels or loudness when you are done.

If it doesn't have enough bass or treble then you need either more power, more speakers or both.

You can tweak things on the eq, but just keep it below +1db, tweeters are very easy to blow and very sensitive. They need about half the power mids do to make the same power and any clipping is super bad for them beause their coils are like .5"

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Eq is causing you to clip. Instead of boosting frequencies you want louder, quiet down things you want quieter. Like instead of boosting your bass and treble like that (smiley face eq) quiet down the mid range. Same thing, but nothing gets amplified above that 0db line

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