Swapping JL amp?

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=72763
Printed Date: July 12, 2025 at 8:32 AM

Topic: Swapping JL amp?

Posted By: timmyjimmy5150
Subject: Swapping JL amp?
Date Posted: February 13, 2006 at 6:03 PM

In my F-150 I currently have 4 component speakers (1 in each door) powered by a JL 300/4....

I then have a single JL sub under the rear bench powered by a JL 250/4....

My question: I recently purchased a JL 450/4 from a friend who needed some fast cash......

I'm going to replace my 300/4 with the 450/4 --- The 450/4 will give me more power in the front stage and equal power in the rear stage as my 300/4.....

Now --- Is all I need to do is swap the connections on the 300/4 to the 450/4? Should be the same, right?

Another "rookie" question..... Do I need to unhook the neg. battery cable before beginning even if the engine and accessory ignition switch is off?

Any other suggestions appreciated...

thanks

tim

Replies:

Posted By: dwarren
Date Posted: February 13, 2006 at 6:21 PM

Every thing should be the same as far as wiring goes, I would simply remove the main fuse for the power wire for the amp under the hood, that way you don't lose any other settings.

Are the amps the same dimensions?

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Posted By: tcss
Date Posted: February 13, 2006 at 6:23 PM

Should be a straight swap. Disconnect or take the fuse out of your battery direct lead while you're doing the work. Make sure you match the gain and cross over settings to those on the 300/4.

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There is no such thing as free installation!

Posted By: tcss
Date Posted: February 13, 2006 at 6:24 PM

Boy Dwarren you are quick for a Monday.

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There is no such thing as free installation!

Posted By: dwarren
Date Posted: February 13, 2006 at 6:28 PM

tcss]B wrote:

y Dwarren you are quick for a Monday.

It's odd too, after this weekend I was surprised I made to work today.

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Posted By: tcss
Date Posted: February 13, 2006 at 6:41 PM

Yea me too. Made it back from Pomona around 3 AM. Had to shave my tongue this morning!

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There is no such thing as free installation!