is the alpine swr-1521d subs any good?

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Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=4239
Printed Date: August 20, 2025 at 3:56 PM

Topic: is the alpine swr-1521d subs any good?

Posted By: durangomanz
Subject: is the alpine swr-1521d subs any good?
Date Posted: October 06, 2002 at 6:56 PM

i was thinking of buying 2 alpine 15" dvcs has anyone heard them are they any good and do they put out some good spl?

Replies:

Posted By: Velocity Motors
Date Posted: October 07, 2002 at 9:53 AM

I've heard two in a sealed box and they sound good. The level of SPL will depend on the box and the power going to them.

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA

Posted By: jeffchilcott
Date Posted: October 07, 2002 at 10:07 AM

I installed 2, 12" Alpine Swr's with a alpine 1507 amp... 2 batterys and a 5 farad cap in a ported box....this all went into a 95 mitisubishi eclipse...managed to hit a 152.4 for SPL I would use the 12's they are better for day o day listening but if your going for SPL alone the 15's are nice

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2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place

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