Alpine MRV-F340 + RFZ-3408 + 6402cfp= ?

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=22401
Printed Date: May 21, 2024 at 8:38 PM

Topic: Alpine MRV-F340 + RFZ-3408 + 6402cfp= ?

Posted By: sm951
Subject: Alpine MRV-F340 + RFZ-3408 + 6402cfp= ?
Date Posted: December 05, 2003 at 6:22 PM

Hi,

I received an Rockford Fosgate 8" RFZ-3408 sub and enclosure for X-mas (early :)) and would like to get a decent amp for it. All I want is good reliable sound - not a true audiophile yet.

I can get the Alpine 4-channel MRV-F340 amp for $225. Is this amp good, considering that my system only consists of:

- two 4x6 Infiniti Reference 6402cfp speakers up front

- one 8" sub in a sealed enclosure in the hatch

- an older Alpine head unit with 2 sets of RCA outputs

The car is a 944 and I'm anxious to get it sounding good (when I'm not listening to the exhaust)...

Thanks for all your help:D

Replies:

Posted By: forbidden
Date Posted: December 05, 2003 at 6:47 PM

It looks like a good little amp 35x4 ot 35x2 and 90x1. just enough to get you some decent sound. Not a 100% perfect match but with such a small sub and vehicle, it should sound and operate fine.

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

Posted By: sm951
Date Posted: December 05, 2003 at 7:35 PM

Actually, I think these are the specs. I hope I'm not buying the wrong amp!

RMS Power Output (Watts x Channels) 55 x 4

Frequency Response 20-20k Hz

THD at Rated RMS Power 0.08%

Signal to Noise Ratio 100 dB

Input Voltage 14.4v

Peak Power Output (Watts x Channels) 250 x 2

Power at 2 Ohms (Watts x Channels) 65 x 4

Bridged Power (Watts x Channels) 130 x 2

I plan to run two of the amp's channels for the front speakers and bridging the rear two channels for the sub. Sound ok to you guys?

Posted By: forbidden
Date Posted: December 05, 2003 at 7:41 PM

Right choice on how to wire the amp to the speakers. Throw all the specs above out the window, you need to see a rms power rating @ 12 volts measured into 4 ohms, this is where I came up with the ratings for you, a closer look at the Alpine amp's owners manual should verify this. Still is an OK match

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

Posted By: sm951
Date Posted: December 05, 2003 at 7:53 PM

forbidden wrote:

Throw all the specs above out the window, you need to see a rms power rating @ 12 volts measured into 4 ohms, this is where I came up with the ratings for you...

Gotcha...you're absolutely right!

Posted By: sm951
Date Posted: December 11, 2003 at 3:13 PM

forbidden wrote:

Not a 100% perfect match but with such a small sub and vehicle, it should sound and operate fine.

OK, you piqued my interest...

What would be a ideal/perfect matching amp, without blowing my savings? My car has a bit of road noise, so $400+ amps won't be necessary.

Thanks for the help!