What Class D amps will drive a 2 ohm load

@Dsper — the "doubling thing" we love as audiophiles means that the amp will maintain its output voltage constant despite the drop in load impedance, which in turn means its power supply can adequately provide the increase in current needed to achieve said constant voltage. As you probably remember, volt/ohm= amp which means that every time you halve the ohm, you double the amps, voltage remaining constant. As power (Watts) is the product of volt x amp, it follows that keeping the volt constant means the wattage doubles.
In the real world, however, only a perfect amp will do this and there are no "perfect" amps. Many manufacturers just under specify the 8ohm rating to allow their product to be in spec for the lower loads. Nothing wrong with that in my book, you still need a well-engineered product to achieve numbers close to doubling anyway.

The OP asked a simple question...
"What Class D amps will drive a 2 ohm load"

Specs Shmecs,
Opinions Shmapinions.
My Brother’s Shmother’s Frother’s Caruther said.
Ba-Loney!

1. Get a Class D amp.
2. Find some Kappa 9’s.
3. Set the the switch in the rear to Extended.
4. Crank up the music.
5. The Class D amp that doesn’t shut down will drive a 2 ohm load.

I can say this after completion of the above five steps,
This is gonna be one very short list of Class D amps... Bahahahaaaaaaa!

My answer to the posted question,
Stay away from Class D amps to drive low impedance speakers.

By the way dsper...
Truly a great pair of speakers.
Enjoy them with whatever you pair them with.

1. Get a Class D amp.
2. Find some Kappa 9’s.
3. Set the the switch in the rear to Extended.
4. Crank up the music.
5. The Class D amp that doesn’t shut down will drive a 2 ohm load.

I can say this after completion of the above five steps,
This is gonna be one very short list of Class D amps

Crude way, but effective.
Better to just see how they behave in tests not understated into 8,4, and 2ohm and see if they can do "close" to the doubling act for each halving of the impedance.

My answer to the posted question,
Stay away from Class D amps to drive low impedance speakers.

Excellent advice.

Many manufacturers just under specify the 8ohm rating to allow their product to be in spec for the lower loads.

Yes this must be observed, as many "cheat" by understanding the 8ohm or the 4ohm watts, just so the 2ohm look better.


If all above is not taken on board, just buy a 3000!watt Class-D for just $400 and see how you go.
https://www.storedj.com.au/behringer-nx3000-ultra-lightweight-3000w-class-d-power-amplifier

Cheers George

@georgehifi  As a matter of fact, I have heard that Behringer, slightly modded to improve the sound, and it's not a bad device. Compared to the usual hi-end device, it sounds harsh and with a bit limited extension at both ends (or so it sounded), but it has driving power aplenty.

I have heard that Behringer,
but it has driving power aplenty.

Was that with speakers like the OP has that are 2ohms and less for nearly all the bass.

BTW that 3000w Behringer Class-D can be got now for $299!! at Parts Express now, with free!!! shipping.
https://www.parts-express.com/behringer-nx3000-ultra-lightweight-class-d-3000w-power-amplifier--248-7012