US Amps XT4000d vs. Power Acoustik A3000db

[05LSV 10+ year member]

I can get both for about the same price.

The amp will be used for running 2 L7 12" dual 4 ohm subs (2006). This is for a boat system, so the amp won't be seeing 14 volts, probably more like 12.5-13.5, so please base you recommendation on this fact. Higher efficiency would be nice.

Thanks in advance.

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[ThatChevyGuy 5,000+ posts]

i think the us amps is higher in quality, but doesnt do much power.

 

[05LSV 10+ year member]

The US Amps is rated for 1500x1 at 1 ohm.

The Power Acoustik is rated for 2300x1 at 1 ohm.

Will either amp perform at rated power? What should I expect to get out of them?

 

[supa_c 5,000+ posts]

4000D does maybe 900wrms

The PA prob doesnt do rated, but it definetly does more than 900w

 

[05LSV 10+ year member]

4000D does maybe 900wrmsThe PA prob doesnt do rated, but it definetly does more than 900w

Wow, the 4000d is rated for 1500x1 at 1 ohm and only does 900 watts? I guess I have my decision!

Other input still appreciated. Anyone running either of these amps right now?

 

[supa_c 5,000+ posts]

Yep, even Greg at US Amps said its overrated.

I was not impressed with the internals. Sold it for $150...piece of junk

 

[AZsound 10+ year member]

PA does about 750 wrms at 2 Ohm at 12.5V and about 1k wrms at 1 Ohm. If you ask me how much PA does at 14.4 V the answer will be "add 30% to measured power at 12.5V" Total harmonic distortion less than 1% (unclipped signal)

 

[05LSV 10+ year member]

Yep, even Greg at US Amps said its overrated.I was not impressed with the internals. Sold it for $150...piece of junk

thanks for the input.

What would be your opinion of the Power Acoustik A3000db versus the Autotek MM2000.1d? The Autotek is a bit pricier, and is rated at 2000x1 at 1 ohm.

Thanks again.

 

[bonesninja 5,000+ posts]

buy my Incriminator 20.1....it will smash the PA and the 4000

 

[05LSV 10+ year member]

PA does about 750 wrms at 2 Ohm at 12.5V and about 1k wrms at 1 Ohm. If you ask me how much PA does at 14.4 V the answer will be "add 30% to measured power at 12.5V" Total harmonic distortion less than 1% (unclipped signal)

How can the PA only do 1000 watts at 1 ohm when it's rated at 2300x1 at 1 ohm? Even if it only does 1900-2000 watts (it's over-rated a bit) and I only give it 13 volts, I would still get 1750-1800 watts at 1 ohm.

Where are you getting you numbers from?

 

[supa_c 5,000+ posts]

thanks for the input.
What would be your opinion of the Power Acoustik A3000db versus the Autotek MM2000.1d? The Autotek is a bit pricier, and is rated at 2000x1 at 1 ohm.

Thanks again.

Id take it over both

Someone on here had the 4000w model that did more that rated when he benched it

 

[AZsound 10+ year member]

How can the PA only do 1000 watts at 1 ohm when it's rated at 2300x1 at 1 ohm? Even if it only does 1900-2000 watts (it's over-rated a bit) and I only give it 13 volts, I would still get 1750-1800 watts at 1 ohm.
Where are you getting you numbers from?

If you can read russian or translate

http://www.avtozvuk.com/az/Az_0105/htm/052-063pa.htm

 

[supa_c 5,000+ posts]

PA does about 750 wrms at 2 Ohm at 12.5V and about 1k wrms at 1 Ohm. If you ask me how much PA does at 14.4 V the answer will be "add 30% to measured power at 12.5V" Total harmonic distortion less than 1% (unclipped signal)

looking at the board those numbers seem a bit off

This planet audio amp uses the same board, and the birthsheet seems believable

http://ampguts.realmofexcursion.com/Planet_Audio_VX2200D/outside3.jpg

 

[05LSV 10+ year member]

If you can read russian or translate
http://www.avtozvuk.com/az/Az_0105/htm/052-063pa.htm

I translated it, but I'm still not following you. It gave 4 ohm and 2 ohm test numbers at 12.5 volts, but nothing for 1 ohm. I'm guessing you were just assuming that the 1 ohm number would be around 900 watts?

 

[AZsound 10+ year member]

looking at the board those numbers seem a bit offThis planet audio amp uses the same board, and the birthsheet seems believable

http://ampguts.realmofexcursion.com/Planet_Audio_VX2200D/outside3.jpg

Yes, birthsheet seems believable but no any info about power. Is it RMS or a MAXIMUM power ? You don't know. I believe that in birthsheet is a true MAXIMUM power because there is no any info about distortions. Yes may be PA or Planet audio VX2200d does rated power but at 10% or more total harmonic distortion. That is clipped signal for sub. Rockford and Kicker wrote in their birthsheet that measured power is RMS and distortions are 1% and that is true RMS power. All review of Kickers and RF amp's confirm that in russian magazine.