need amp suggestions

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=29047
Printed Date: May 11, 2025 at 11:11 PM

Topic: need amp suggestions

Posted By: Bchockey097
Subject: need amp suggestions
Date Posted: March 25, 2004 at 11:06 PM

hey
i was wondering what kind of amp u would suggest for 2 12" Brahma's. Also, I was wondering if u could direct me to or tell me (since im a nub) how you tell what amp works with what subs.

Thanks for the help.

Replies:

Posted By: Clean Install
Date Posted: March 26, 2004 at 7:45 PM

check out this here link: https://jlaudio.com/tutorials/wiring/index.html

this should help you out....if you are still unclear post back

-------------
If we learn from each success and
each failure, then we can improve ourselves

Posted By: Bchockey097
Date Posted: March 27, 2004 at 10:33 AM

I understand how the wiring and everythign works but what does this mean?
" Dual-6 Ohm Subwoofer: 3 Ohms "
Does that mean it will only give the sub 3 ohms?
Also I don't understand how u can tell if the amp is compadable with the sub by this.

Thanks 4 the help.

Posted By: DYohn
Date Posted: March 27, 2004 at 10:53 AM

When a woofer is dual voice coil, that means it actually has two windings driving the cone that must each be powered. Two windings at 6 ohms means the woofer can either be wired at 12 ohms (coils in series) or at 3 ohms (coils in parallel.) If you have two of these woofers, then the total impedence load you will place on your amp is one of the following: 1.5 ohms (two woofers wired at 3 ohms connected in parallel); 6 ohms (two woofers wired for 3 ohms in series or two wired for 12 ohms in parallel); or 24 ohms (two woofers at 12 ohms in series.)

To match the system with the proper amp, here's what you do: Look at the RMS power rating for the woofers. In the case of the Adire Brahma, these can handle up to 1600 watts RMS, but you can get great output from these with as little as 200 watts. Choose an amp that can handle a 1.5 ohm load and produce at least, say, 600 to 1000 watts into that load (such as a JBL BPX 1100.1)

Now build your enclosure to the proper specs (probably about 2 cuft ported for each Brahama) and wire the system for 1.5 ohms, use that JBL amp and make your tires bounce off the ground.