YAMAHA PRO AMP 3 ohms? JL 12W7

[crackhead2k]

P7000S has a dynamic power rating for 2 but no rms.

I'm planning on driving a pair jl 12w7 for 400(3 ohms) that would be bought for 400 for 2. Not sure if its going to be safe to drive.

I need a silent amp.

Any ideas?

I really do not want to spend much more the the actual cost of the subs.

[STEvil]

Should be fine at 3 ohms per channel if the amp is rated to 2 ohms per channel.

Too bad its only a 650w amp.

[crackhead2k]

damn, the yamaha only takes a min. of 4 ohms and a max of 950w

Is it possible to drive 3 ohms? 1 ohm difference.

[STEvil]

says it will run 2 ohms on the websites, so 3 will be fine. "1" ohm of difference is a lot sometimes.

[crackhead2k]

Did a more careful look on the chart, it says burst mode.....

Seem some people are running it at 2 ohms....
However not designed for that load.
Not a lot of time for research for myself
I might just go for a qsc because its a rated rms load.

But i need a rackmount closet thats quiet. Anyone got suggestions. I really don't want to hear fan noise.
I'll continue to look on some other forums when i got the time.

[EniGmA1987]

The cheaper the amp, the louder the fan noise usually. You can always buy something and replace the fans with something quieter. It shouldnt matter for cooling on a QSC since you wont be stressing the amp at all in a home environment.

Make sure you get the right model series though, not all QSC amps are rated for 2ohm operation. It depends on the class of amp it is.

[STEvil]

I would stick with the yamaha over the qsc. Every QSC i've seen has been electrically noisy and impotent power wise.

[EniGmA1987]

Mine have been fine on power, but definitely agree with the electrical noise The only single amp I have owned from QSC (I own 5) that has been perfect and is the most amazing amp I have ever heard is the DCA1644. It powers my front L and R speaker towers. My 4 other QSC amps have been quite noisy, although 2 of them didnt start out that way. Hmm.