6 1/2 + 5 1/2 + tweeters.

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=17362
Printed Date: July 14, 2025 at 7:01 PM

Topic: 6 1/2 + 5 1/2 + tweeters.

Posted By: pknoles
Subject: 6 1/2 + 5 1/2 + tweeters.
Date Posted: August 08, 2003 at 8:08 PM

I am installing JBL 608Gti to go with Boston Acoustics Pro 5.5. I am running the 5.5's off a JBL p180.2 . I am thinking about trying to find a 4 channel amp that puts out 150 wattts RMS to each channel. Does anyone know of an amp that has these specs or is there any better suggestions? Thanks.

Replies:

Posted By: esmith69
Date Posted: August 08, 2003 at 9:28 PM

The MTX Thunder 1004 will give you 125 watts RMS per channel @ 4 ohms; also so will the Precision Power PCX-4125. They say the Audiobahn A4801t will do 250 watts RMS per channel @ 4 ohms but I think that's a little inflated. Still any of those amps will definitely give you more than enough power to push your speakers.

It'd probably be less expensive to just use two 2-channel amplifiers, especially considering you already have one of them, but it's gonna be harder to get everything to sound integrated and matched if you're using two separate amps than if you just had a single 4-channel amp. That's not to say it's not possible to make it sound as good, just that it'd require a little more effort and planning ahead as far as the installation is concerned.

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Ethan
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"Patience, persistence, and perspiration make an unbeatable combination for success"
Donate to the12volt.com

Posted By: pknoles
Date Posted: August 09, 2003 at 9:59 AM

Actually I have already purchased the other 2 channel amp. I really wanted some tips for later use and those look pretty close to what I am looking for. Thanks for your reply.

The interesting thing though is the Bostons claim Nominal Impedance of 3 ohms. But the JBL are 4ohm. what kind of effect do you think that will have?

Posted By: esmith69
Date Posted: August 09, 2003 at 6:40 PM

Are the JBL's for the rear and the Bostons for the fronts? Or the other way around?

-------------
Ethan
-----
"Patience, persistence, and perspiration make an unbeatable combination for success"
Donate to the12volt.com

Posted By: pknoles
Date Posted: August 12, 2003 at 6:33 PM

Bostons are in the door right now. JBL's will be in kick panel. .

Posted By: esmith69
Date Posted: August 12, 2003 at 7:20 PM

I don't think the difference in impedence will cause any problems for your setup, especially since each pair of speakers is gonna be run off its own amplifier. Because they're not going to be perfectly balanced just due to the fact that each amp has its own separate gain/crossover settings. Besides, with speakers as good as these ones, it's sorta assumed that you're gonna be the type who wants perfect sound and knows that will require some fiddling with the gains until you get it to sound just the way you like it.... posted_image

-------------
Ethan
-----
"Patience, persistence, and perspiration make an unbeatable combination for success"
Donate to the12volt.com

Posted By: pknoles
Date Posted: August 13, 2003 at 1:30 PM

I do want perfect sound. But as how to get it. I am clueless. Besides stock systems this is my first system. I put it all in myself (which I am very happy about..) I am going to try to hit a competition so I can hear a good system and see what I can do to mine. This is great fun. And a lot of work., I appreciate all on this site for the advice and technical help. This hobby has shot up to Number 1 on my list. Thanks again.