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  #1  
Old 09-05-2012, 09:50 PM
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Default Distortion full tilt on an Alpine?

Okay so I wired my subs at .5 today from 2 and also disconnected both my processor and line driver.

I've been told by numerous people that alpines put out no distortion at full volume.

Been told to run my subwoofer level at max (+15 in my case), but regardless of that setting, I'm distorting (according to a DD-1 playing 40 hz @ -5 db), regardless of my gain.

Setting my gains with the DD-1, subwoofer level at 1, results in almost no bass. Turning the sub to +15 gives me a little, but they're still barely moving.

If I turn the gain up a little, still way below distortion "by ear", I get some volume, but it's still quieter than when it was wired at 2 ohms, gain similar locations.


Anyone have any suggestions on how I should have my headunit settings?


Oh, I realized I ripped the DD-1 tones as 320kbps AAC off a flash drive; not sure if that will cause distortion.

I'm going to rip them as apple lossless and put them on my ipod but I was under the impression that is converted to a lossy format when sync'd anyways.
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Old 09-05-2012, 10:16 PM
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Dd1 the hu through the amp how the manual says. Hu set flat. Amp gain at 0, and all crossovers "open". Use the 0 db tone. Once you find where the hu clips, then set the amp.
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Old 09-05-2012, 10:20 PM
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My alpine 9805 clips at 28, backed it down to 25 and set my amp gain. Granted I used a scope.

Bass set to zero and sub level to 15.
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Old 09-05-2012, 10:30 PM
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Quote:
Originally Posted by btsteinb View Post
Dd1 the hu through the amp how the manual says. Hu set flat. Amp gain at 0, and all crossovers "open". Use the 0 db tone. Once you find where the hu clips, then set the amp.
Was the first thing we did.
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Last edited by Kelocyde; 09-05-2012 at 10:34 PM.
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Old 09-05-2012, 10:43 PM
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idc what the dd-1 says... no HU sounds good at maxed out volume... unless you know exactly what you are doin yadda yadda

whoever told you to run your sub output at +15 is probably....nevermind this is just dumb

my suggestion to you is to set everything flat and tune with your ear... always works for me... when i say flat i mean your EQ on +0.... subout+0 bassboost+0..... bass boost on the amp should be all the way down etcetc.
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Old 09-05-2012, 10:53 PM
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my 9886 showed no distortion at full volume with the dd-1 and ive got it at 15 sub level on the hu
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Old 09-05-2012, 10:57 PM
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alpine's should have the sub level all the way up. just them. 9886, 9887, cda-117 can all go full volume without clipping. i'd check polarity and stuff if it's just a lack of output that's concerning you the most
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Old 09-05-2012, 10:59 PM
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Same here with my 9886.
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Old 09-05-2012, 11:00 PM
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i think even with the loud setting on it didnt clip. but i cant remember
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Old 09-05-2012, 11:11 PM
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Quote:
Originally Posted by skartisu View Post

whoever told you to run your sub output at +15 is probably....nevermind this is just dumb.
So you have your sub level set to zero, a heavy bass song comes on and you have no adjustment. Yes that is dumb......
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