Question 1

Is the warranty valid if this amp is purchased from a seller not on Pioneers authorised dealers list?

Accepted Answer

There are different types of warranties, but a manufacturer warranty is universal and not dependent on the details of purchase, all that is required is PROOF of purchase. Additional warranties may have other criteria. You can always get consumer affairs to investigate your claim.

Question 2

what is r.m.s. per channel x 4 channels @ 4 ohms

Accepted Answer

can i used class fd 4-channel bridgeable pioneer and hook it up to 4 6.5 3 ways pioneers and 2 10' inch shallow sub woofer to this amp?

Question 3

what is the rms per channel of this? could this push 2 sets of mm691 speakers at 135 watts rms per channel?

Accepted Answer

It's rated at 100 rms at 4 ohms. And yes it will run both sets real good. Unless you are going into a Sound Off contest, you won't be using the full 100 watts anyway. I'm using this amp to power a set of 4 inch Infinity kappas 80rms front, and 4x7 boston acoustics 50rms rear. Pioneer AVHX8500BHS head unit powering Infinity kappas tweeters 100rms in the doors. Pioneer GM D9601 600rms pushing two 10 inch Kicker L7 Solobarics. To help with power I also have a 2 farad Rockford Fosgate cap. Volume at 12 is already decent loud. At 16 is where i would be showing off. Anything louder for a long period of time will damage hearing. Also get a quality wiring kit, I used a combo of Rockford Fosgate and Monster cable, it will help and what you pay for is what you get. Unless it's too overpriced. Shop around.

Question 4

would any one suggest this for a 5 channel set up? front outputs split to cabin and rear output bridged to 1 powerful 10" or 12"

Accepted Answer

Amp specs say, 300 watts RMS x 2 bridged at 4 ohms (250 watts RMS x 2 bridged at 2 ohms. Now that's by two channel bridged, not by one. So that's telling me that in bridge mode the amp is not split to run say 4 full range speakers and 1 sub bridged. Sorry, I have to say no. I have seen A/B amps split to run what you want to do, but its been years. Not sure if class D amps are made to do so without being a 5 channel amp or damaging them or tripping into protection mode. You would be better off getting a 5 channel amp or just running a second amp for subwoofers. Sorry, I have to say no can do with this 4 channel.

ASIN	B00A02PG0C
Brand	PIONEER
Customer Reviews	4.3 out of 5 stars 334 Reviews
Global Trade Identification Number	00734911358799, 00884938193115, 00884938193146
Item Dimensions	33.8 x 12.4 x 27.9 centimetres
Item Weight	6.3 Pounds
Item dimensions L x W x H	33.8 x 12.4 x 27.9 centimetres
Manufacturer	Pioneer
Manufacturer Part Number	GMD8604
Model Number	GMD8604
Mounting Type	Surface Mount
Mounting type	Surface Mount
Number of Channels	4
Number of channels	4
UPC	734911358799 069060216936 884938193115 884938193146
Voltage	12 Volts

Pioneer CLASS FD 4 CHANNEL

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