4 ch vs 5 ch 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=76885
Printed Date: July 14, 2025 at 6:58 AM

Topic: 4 ch vs 5 ch amp

Posted By: wagner
Subject: 4 ch vs 5 ch amp
Date Posted: April 27, 2006 at 11:19 AM

I am in the process to get an amp but i was offered a 5 ch amp, I have been doing research but i dont see too many things about 5 ch amps and if they work.

The equilizer i got is:
Kenwood KGC-6042A

and the head unit: Kenwood Excelon KDC-X890

This will be installed in a Opel Astra G, 2004

I am planning to install 2 set of :

Boston Acoustics SX50
5-1/4" component speaker system

Sensitivity 90 dB
Frequency Response 58 - 20k Hz
RMS Power Range (Watts) 2-65
Peak Power Handling (Watts) 200
Impedance (Ohms) 4
Top-mount Depth (Inches) 2 1/8
Bottom-mount Depth (Inches) N/A
Cutout Diameter or Length (inches) 4 9/16

and a sub

Sony XS-L123P5
12" 4-ohm subwoofer

Impedance 4 ohms
Sensitivity 89dB
Frequency Response 18 - 2k Hz
RMS Power Range (Watts) 90-380
Peak Power Handling (Watts) 1300
Vas (liters) 86.7
Fs (Hz) 24.8
Qts 0.37
Xmax (millimeters) 5.7

What would be your recommendation in the type of amp or amps I should get?

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Wagner
Stop dreaming ur life!
start living ur dream!!

Replies:

Posted By: xtremej
Date Posted: April 27, 2006 at 11:30 AM

Judging by the power requirements a 5 channel would be suitable. Consider that some 5 channels are quite large though. The 2 I would recomend (do to personal experience) are the concept cca -664 or one made by memphis i forgot the model number. Both worked well. the concept gives 60x4 and 200x1. roughly 11"x17". its at this link.

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Posted By: forbidden
Date Posted: April 27, 2006 at 11:33 AM

I agree with Jeremy. For your application, a 5 channel amp would work great. The Concept amp is a great little amplifier, if you can find a Eclipse PA5532, it would be a good step up from the Concept.

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Top Secret, I can tell you but then my wife will kill me.

Posted By: kgerry
Date Posted: April 27, 2006 at 5:41 PM

i concur that a 5 channel amp would be the most efficient solution... i have used a few Directed D2205's lately in this situation with success....

my only fear ( bad memories of Soundstream 5 channels grenading on me) is that if you overdrive and blow the sub output stage you lose the whole system.... whereas with a dedicated sub amp and satellite amp you dont have the same potential problem.....

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Kevin Gerry
Certified Electronics Technician
MECP First Class Installer

Owner/Installer
Classic Car Audio
since 1979