Most Efficient 2000w Amplifiers on the Market?

[xtremebassjunky 10+ year member]

I looked into this one, and one thing i read is that the only Stetsom worth my time would be the 7k Vulcan, but also, the 2k isn't stable down to 1 ohm, only 2 ohms... Same problem with the Kicker 2500. Right now I'm trying to find out more information on pricing for the M2 and M3 from DD...

the good stetsom line is the digital/vulcan line.

the amps can do 1/2 ohm daily from what I have been hearing.

they just only listed rating to 2 ohms.

 

[casper97ta 10+ year member]

Where did you find these efficiency %'s? I have e-mailed them about the efficiency because their site only lists it as great than 70%. Did you measure it yourself?

Mmats have been known to have close to 90% efficiency for a while. Maybe its just on the birth sheets that says the actual number. They are also underrated.

 

[jfsh90 10+ year member]

Isn't that 90% at 4 ohms, though?

 

[brchd]

Where did you find these efficiency %'s? I have e-mailed them about the efficiency because their site only lists it as great than 70%. Did you measure it yourself?

its in the owners manuals, not on the site. MMats was originally a commercial laundry machine manufacturer who pretty much pioneered the Class D amps of today.

there is a formula you can use to figure it out IIRC...its something with the current draw, and voltage etc

 

[blong131 10+ year member]

cadence zrs10 is maaad efficient...iv got a 130 amp alt stock batt and nooo dimming

 

[UpNCommin 10+ year member]

i might get flammed for this, but umm the soundstream pca2000d does 2000 rms @ 1 ohm

 

[brchd]

Isn't that 90% at 4 ohms, though?

nope, because usually the efficiency is lower at higher ohm loads. the damping factor is higher at 4 ohms. NOT the efficiency. why doe you see specs that say efficiency at 1/3 power like 50% but at FULL POWER the efficiency gets considerably higher.

 

[jfsh90 10+ year member]

k.

 

[B_Campbell 10+ year member]

zapco 9.0

 

[B_Campbell 10+ year member]

http://www.caraudiomag.com/specialfeatures/0202cae_high_power_amp_test/index.html

 

[xtremebassjunky 10+ year member]

nope, because usually the efficiency is lower at higher ohm loads. the damping factor is higher at 4 ohms. NOT the efficiency. why doe you see specs that say efficiency at 1/3 power like 50% but at FULL POWER the efficiency gets considerably higher.

can't say that I have seen specs of amps that companies rated efficiency when only at 1/3 power.....

not sure i got what you are saying.

basically the efficiency of an amplifier decreases as you lower the ohm load/ resistance it sees

4 ohm nominal = 518 watts @ 88% efficiency (voltage fell from 14.3v, to 14.0v)2 ohm nominal = 948 watts @ 85% efficiency (voltage fell from 14.3v, to 13.6v)

1 ohm nominal = 1510 watts @ 78% efficiency (voltage fell from 14.3v, to 12.4 volts

.5 ohm nominal = 1615 watts @ 72% efficiency (voltage fell from 14.3v, to 11.8v)

.35 ohm nominal = 1748 watts @ 67% efficiency (voltage fell from 14.3v, to 11.4v)

http://www.soundsolutionsaudio.com/forum/index.php?showtopic=7116

 

[jfsh90 10+ year member]

So, I was right?

 

[xtremebassjunky 10+ year member]

yes

 

[jfsh90 10+ year member]

Thanks.

 

[xtremebassjunky 10+ year member]

my understanding of damping factor is that it decreases as well...