system amp problems

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=33197
Printed Date: November 10, 2024 at 1:16 PM

Topic: system amp problems

Posted By: nickch
Subject: system amp problems
Date Posted: June 02, 2004 at 9:58 PM

Hi, i'm currently in a delima on how i should go about to powering my system.

I'm going to have 4" component sets for the front stage which i want to supply about 60W RMS to both channels, a pair of 6x9 which i want to have 80W RMS per channel and a subwoofer which will get 400W RMS.

How do i go about powering this system, if i were to use one amp for the system, how do i distribute the power among the different speakers?

I was thinking of also getting 2 amps. one to power the 6x9 + the components and another amp to power the woofer. but there might be a problem with space in my car? can anyone advice me on that? thanks

Nick

Replies:

Posted By: stevdart
Date Posted: June 02, 2004 at 10:57 PM

Get a 4 channel amp for the speakers, and a separate class D mono amp for the sub. If you want the fronts to be as loud or louder than the rears, you should consider upgrading the components to a larger size. You can get a 4 X 60 RMS @ 4 ohm for what you have, but you'll find more selection at 4 X 50. What you get for the sub depends on its impedence. Mono amps work well at a 2 ohm load, so if the sub is rated 4 ohm, you will use a larger amp. There are some compact amplifiers, so they should fit in place of a bag of groceries.

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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

Posted By: keniwi
Date Posted: June 02, 2004 at 11:12 PM

Hi! Nickch,

What type of car or truck do u have. First of all I agree with (Stevdart) with the specs about 2 amps. It will be a better sound within. Tell us what u have in order to help u out.

Later,

Keniwi

Posted By: keniwi
Date Posted: June 02, 2004 at 11:14 PM

Hi! Nickch

I agree with "Stevhart". But u must tell us the car or truck u are driving so we can be as open as possible the more info the better it gets.

Keniwi

Posted By: nickch
Date Posted: June 03, 2004 at 2:40 AM

i'm driving a 1987 honda legend. Whatever parts that are going in there is only almost temporary.. for at least about 1 year.. then i might be switching cars.

Posted By: nickch
Date Posted: June 03, 2004 at 2:53 AM

i dont want to make unneccessary modifications to the chasis. The speaker mounts up front are 4" in size.

And after reading your recommendations. I'm thinking of having 1 amp dedicated to the woofer.. and another for the other speakers..

since my woofer has a 400W nominal rating(so i take this as the RMS), i can get a 400 Wrms amp for that and for the other speakers which consist of a pair of 6x9 with total nominal rating of 80Wrms and a pair of 4" splits with no RMS rating, but i assume it to be 80Wrms as well, i can get a 200W amp for that..

as a sidenote.. ironically, this seems like the pattern that those sony amplifiers have.. 222W and 444W