Headroom?

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Oct 1, 2016 | 10:21 AM

Cheesehead_13

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Joined: Mar 2014

Posts: 485

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From: Phoenix, AZ

Headroom?

OK, so I think I am starting to finally get some of these concepts. I have fairing only speaker set up (BT 7.1 non pro). I was wondering why my BT 7.1s don't sound like I expected them to. I think they may be underpowered. Could that be true?

Per the sticky, the PA bench tested at only 91w @ 4 ohms. I am guessing that I should have a true 120-180w @ 4 ohm amp. Does that sound correct? Previously I was thinking of bridging my PARZ4 2000D to those speakers to get more power but could be risky (possibly too much power).

Last edited by Cheesehead_13; Oct 1, 2016 at 10:26 AM.

Oct 1, 2016 | 10:38 AM

sponger

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Joined: Sep 2015

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From: so cal

Not to much power if you keep the gains down and dial it in with a dmm.

Oct 1, 2016 | 11:56 AM

Gannicus

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Joined: Oct 2012

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From: Indianapolis IN.

Quote:

Originally Posted by sponger

Not to much power if you keep the gains down and dial it in with a dmm.

Sponger is correct. Turning the HU up to 75-80% capacity and then setting the gains by ear will get you where you want to be. Just listen for distortion and back the volume **** down a little when you hear it. You can then turn your stereo up to that set point and not worry about blowing your speakers. Your "Headroom" will be the 20-25% you left on the table. I don't use a DMM anymore. Some guys like it and I say to each his own. But I've found my ears to be more accurate.

Note* Make sure all your HU settings are FLAT when setting the gains.