one 12 at 400 watts or two at 175 each?

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=115283
Printed Date: May 10, 2025 at 3:37 PM

Topic: one 12 at 400 watts or two at 175 each?

Posted By: chasepb
Subject: one 12 at 400 watts or two at 175 each?
Date Posted: July 25, 2009 at 1:53 PM

would 1 12 running 400 rms be louder the 2 12 running 175 rms each

thanks chase

Replies:

Posted By: DYohn
Date Posted: July 25, 2009 at 4:46 PM

That depends on the speakers and the enclosures.

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Posted By: chasepb
Date Posted: July 25, 2009 at 4:52 PM

Kenwood KFC-W3012
12" Single 4 ohms KFC Series Car Subwoofer

and the box is a sealed 1.5 qf

Posted By: soundnsecurity
Date Posted: July 26, 2009 at 10:19 AM

would that be 1.5^3ft per sub if you had 2 of them? or 1.5 shared(.75 each)? what would it be if you just had one sub?

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Posted By: DYohn
Date Posted: July 26, 2009 at 10:26 AM

All else being equal, that speaker has a sensitivity rating of 86 db. So at a reference distance of one meter, one of them with 400 watts will produce approx. 112 dbSPL. Two of them with 175 watts each will produce approx. 111.4 dbSPL The difference to your ear is insignificant.

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Posted By: chasepb
Date Posted: July 26, 2009 at 3:32 PM

i will probably go with the one because i have the two in there now and i have no room left

Posted By: chasepb
Date Posted: July 26, 2009 at 3:33 PM

1.5 each maby more

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