_Nomad_

I was thinking of picking this amp up to run the system in my C6. I'm underpowered now. I will need around 200 watts x 2 to run the ID 6.5" 2-ohm stereo seperate systems in the front and about 400 x 2 for the two 10" subs in the rear. This seems to fit the bill.
Details:
» 4-channel car amplifier
» 100 watts RMS x 4 at 4 ohms (210 watts RMS x 4 at 2 ohms)
» 425 watts RMS x 2 in bridged mode (4-ohm stable in bridged mode)
» variable high- and low-pass filters (40-400 Hz, 12 dB per octave)
» wired Punch Bass EQ (0-18 dB at 45 Hz)
» Focused Mass Heatsink design
» removable connector cover
» special-design TO-247 MOSFETs run cooler than standard transistors
» CEA-2006 compliant
» preamp inputs and outputs
» fuse rating: 40A x 3
» 4-gauge power and ground leads recommended
» 17-5/8"W x 2-1/16"H x 11-1/8"D

Performance
RMS Power Output (Watts x Channels) 100 x 4
Frequency Response 20-20k Hz
THD at Rated RMS Power 0.05%
Signal to Noise Ratio 80 dB
Input Voltage 14.4v
Peak Power Output (Watts x Channels) N/A
Power at 2 Ohms (Watts x Channels) 210 x 2
Bridged Power (Watts x Channels) 425 x 2
Minimum Impedance Bridged 4
Minimum Impedance Unbridged 2

Features
Amplifier Class AB
Tri-Way Capable Yes
Low-Pass Crossover Frequency 40-400 Hz
Low-Pass Slope (dB/octave) 12 dB
High-Pass Crossover Frequency 40-400 Hz
High-Pass Slope (dB/octave) 12 dB
Bass Boost 0-18 dB
Bass Boost Frequency 45 Hz
Fan Cooled No
Fuse Rating 40 x 3
Speaker Level Inputs No
Preamp Outputs 1 pair
LED Power Indicator Yes

Kale

Sorry to derail - RF is actually making good amps now, not just 'george foreman grills'?

80db snr isn't that bad... I guess.

But keep in mind that amp may be rated at 14.4v (or so I assume from "input voltage 14.4v" on the specs)

Given RF's reputation, I think I'd go with the edesign nine.2x for comps.

I'm betting it has a much more honest 200x2. And 95 db snr.

_Nomad_

I checked out edesign too but they just don't have a 4-channel amp suitable for my power needs. I also checked out The Memphis 16-MCA500.4 but they are the size of a Greyhound bus!!! They also rate their amps at 14.4v.
The reason the Fosgate is looking good to me is it has the right dimensions and the right power output but considering the Fosgate amps aren't as clean as others I was hoping I could find a decent amp for my setup or just go with this.
Like Kale said 80 db snr isn't that bad but it isn't the best either....Oh well.

If anyone has any suggestions for a good 4-channel amp with the power output I stated in my first post. By all means, let's hear them.

pentavolvo

how much power do u need out of the rear channels for your sub, cause thats only 425rms X 1

_Nomad_

The 10" subs require at least 200rms watts each. I would like to put more than that to them.

mkiv808

http://mobile.jlaudio.com/products_amps.php?amp_id=255

Perhaps?

_Nomad_

The 450/4 may be ok for the front components but it doesn't have enough power for the subs.

mkiv808

Has more power than that RF.

_Nomad_

Actually, no it doesn't. It has a more stable power output over fluctuating voltages, which is cool about the JL amps, but even at max rms in 3&4 bridged mode it isn't putting out as much as the RF. Like I said, it may be enough for the front separate system using the 1&2 stereo mode but not enough power for the subs.
This was actually the first amp I looked at.

_Nomad_

Don't underestimate the "cool factor" in being able to pop the hatch and have a George Foreman cookout anywhere you happen to be.
Bar-B-Que BABY! Chicks dig it.

mkiv808

Not sure how you're getting the numbers on the RF.

It's 100x4 at 4ohms or 210x4 at 2ohms. Which is fine for your power requirements for your fronts.

You can bridge it for 425W at 4ohms, which is what you seem to want for your two subs, but then you only have 2 channels, with nothing to power your speakers.



I think to get what you're looking for, you should be looking at 2 amps. Also, a good amp rated at 200W will always sound better/louder than a cheaper amp rated at 400W.

_Nomad_

425 watts x1 is enough to run the subs although I really would like more than that, which is why I'm soliciting suggestions on 4-channel amps.

I know, using two amps would be the easy rout to go but I am trying to run the whole system off of one amp.

Kale

cleanup must suck though

pentavolvo

It sounds like the fosgate would fit the bill for you. Lotta power for the fronts and a nice solid substage

_Nomad_

I'll take it over the clean up after say....your avatar?

Teh SHOCKER RoX0rZ!!1

mathia

RF seriously under rates their amps. Check out http://www.rockfordfosgate.com/produ...wer_output.asp

I know a lot of audio people like to bash RF for "selling out" and losing quality, but I think they are making really solid amps. You do pay for the name, but they're made the the USA. There are certainly cheaper ways to get clean watts, but in my experience RF has top notch customer service and a good warranty.

I have a RF Punch 100ix from 1993 that's still going strong, while the alpine that's install right next to it and I got at the same time has been repaired twice. In the vette I recently put in an RF Power T8004 and T10001 and I've been happy with those.

Kale

just a little bit of soot on the pinkie...

_Nomad_

Finger lickin' goood!

_Nomad_

OK, I bought that RF amp. Now I'll have to rebuild the amprack cover...

0Audio Dave

nice amp!!