AVS › AVS Forum › Audio › Receivers, Amps, and Processors › I need a sub amp that can do 1500 watts @ 4ohm.
New Posts  All Forums:Forum Nav:

I need a sub amp that can do 1500 watts @ 4ohm.

post #1 of 21
11/20/12 at 7:44pm
Thread Starter 
Any suggestions?

Thanks.
Reply
Reply

AVS Top Picks

post #2 of 21
11/20/12 at 8:27pm
You don't have any from your own research? How about an EPX4000?
Reply
Reply
post #3 of 21
11/20/12 at 8:42pm
Thread Starter 
Yeah the ones I've found were similar to the EPX4000 and while I consider that an option I was just wondering if there were any that were monoblock and more dedicated to home theater and not PA systems.
Reply
Reply
post #4 of 21
11/20/12 at 8:50pm
An amplifier is an amplifier...so what have you found? Just want a quiet one?
Reply
Reply
post #5 of 21
11/20/12 at 8:59pm
Thread Starter 
True. This one has grabbed my attention.
http://www.cerwinvega.com/pro-audio/high-performance-amplifiers/cv-1800.html
Reply
Reply
post #6 of 21
11/22/12 at 4:54am
Here is a Crown amp for $400::

http://www.parts-express.com/pe/showdetl.cfm?partnumber=245-502
Reply
Reply
post #7 of 21
11/22/12 at 6:48am
Thread Starter 
How are those Crown Amps so light for the power they put out?
Reply
Reply
post #8 of 21
11/22/12 at 7:45am
I was not aware of this Cerwin Amp. How does it stack up? Comparable to a XPA-2 at all?

Thanks.
Reply
Reply
post #9 of 21
11/22/12 at 8:09am
Thread Starter 
Well it puts out 1800 watts bridged @ 4 ohm, so I would say its in a little different category than an XPA-2
Reply
Reply
post #10 of 21
11/22/12 at 8:16am
Quote:
Originally Posted by TenTonBass View Post

Any suggestions?

.

I like Crown XTI amps for subs, and they have a DSP with a lot of signal processing built in.

With just speaker we're talking bridged, so an XTi 2000 or XTi 2002 would seem to be a good fit.
Reply
Reply
post #11 of 21
11/22/12 at 8:19am
Quote:
Originally Posted by TenTonBass View Post

How are those Crown Amps so light for the power they put out?

New Power Supplies are much lighter. No reason to lug around 70 pounds amps anymore.
Reply
Reply
post #12 of 21
11/22/12 at 8:31am
Quote:
Originally Posted by TenTonBass View Post

How are those Crown Amps so light for the power they put out?

Switchmode power supplies. I've had them on the test bench, and frankly the biggest problem is finding an outlet to plug them into that can provide enough continuous power for a bench test. I ended up pulling a 30 amp 230 volt circuit.

The other interesting thing is that several amps from the same series with an at least 2:1 difference in power rating are visibly identical, inside and out. But the test bench says nobody is lying.

This same technology when applied to home gear will have similar benefits - much easier to ship and install.
Reply
Reply
post #13 of 21
11/22/12 at 9:11am
Thread Starter 
Those Crown XTi amps look very nice!
Reply
Reply
post #14 of 21
11/22/12 at 9:15am
Thread Starter 
Quote:
Originally Posted by arnyk View Post

Switchmode power supplies. I've had them on the test bench, and frankly the biggest problem is finding an outlet to plug them into that can provide enough continuous power for a bench test. I ended up pulling a 30 amp 230 volt circuit.
The other interesting thing is that several amps from the same series with an at least 2:1 difference in power rating are visibly identical, inside and out. But the test bench says nobody is lying.
This same technology when applied to home gear will have similar benefits - much easier to ship and install.

So they are major strain on your home electrical system compared to other amps?
Reply
Reply
post #15 of 21
11/22/12 at 9:24am
Quote:
Originally Posted by TenTonBass View Post

Quote:
Originally Posted by arnyk View Post

Switchmode power supplies. I've had them on the test bench, and frankly the biggest problem is finding an outlet to plug them into that can provide enough continuous power for a bench test. I ended up pulling a 30 amp 230 volt circuit.
The other interesting thing is that several amps from the same series with an at least 2:1 difference in power rating are visibly identical, inside and out. But the test bench says nobody is lying.
This same technology when applied to home gear will have similar benefits - much easier to ship and install.

So they are major strain on your home electrical system compared to other amps?

Not as long as I just use them with music. ;-)

A 2 killowatt power amp has the inherent power to trip out a 120 volt 15 amp circuit. If it can't do it under test bench conditions, then it is lying about what it is.
Reply
Reply
post #16 of 21
11/22/12 at 9:32am
Thread Starter 
Yeah this is for a DIY subwoofer and mostly to be used for HT and a little bit of music.
Reply
Reply
post #17 of 21
11/22/12 at 1:22pm
Quote:
Originally Posted by arnyk View Post


Not as long as I just use them with music. ;-)
A 2 killowatt power amp has the inherent power to trip out a 120 volt 15 amp circuit. If it can't do it under test bench conditions, then it is lying about what it is.

Test tones and full sweeps aren't great for speakers either. I had a Crown CE4000 that play fine with only a 15 amp circuit and club music. If you could find a Crown K1 or K2 they would be perfect for HT duties.
Reply
Reply
post #18 of 21
11/22/12 at 5:51pm
The Cerwin is rated at 400 watts at 8 ohms; 600 watts at 4 ohms; 2 channels driven.

The XPA 300 watts RMS @ 8 ohm (0.1% THD) 500 watts RMS @ 4 ohm (0.1% THD); 2 channels driver.

That's pretty close, but the Cerwin is way cheaper, and I can't even find a decent review of it. Makes you go hmmmm.
Reply
Reply
post #19 of 21
11/23/12 at 5:42pm
Not certain about your exact power requirement, however I'd check out Yamaha's P series amps, their rock solid and quiet. If you need an audiophile looking piece then Emotiva will fit the bill.

FWIW, .... don't fret the trying to hit an exact wattage number, as halving/doubling is merely 3dB either way.

Also, many enthusiasts have used the Behringer EP4000, and modded the fan with success. I'm not into fan mods, but yeah the EP series is certainly well vetted and inexpensive.
Reply
Reply
post #20 of 21
11/23/12 at 5:49pm
Quote:
Originally Posted by TenTonBass View Post

So they are major strain on your home electrical system compared to other amps?

Typically less so, watt per watt, because of higher efficiency.
Reply
Reply
post #21 of 21
11/23/12 at 5:51pm
Quote:
Originally Posted by knc2007 View Post

Test tones and full sweeps aren't great for speakers either. I had a Crown CE4000 that play fine with only a 15 amp circuit and club music. If you could find a Crown K1 or K2 they would be perfect for HT duties.

I think the CE4000 is actually a better sub amp but, yeah, need to do something with the fan noise if listening at lower levels.
Reply
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Receivers, Amps, and Processors

AVS Top Picks

AVS › AVS Forum › Audio › Receivers, Amps, and Processors › I need a sub amp that can do 1500 watts @ 4ohm.