What Class D amps will drive a 2 ohm load

At 10Hz it is approximately .6 ohms.

That when the vinyl warp frequency will tax an amp, or even a bit of dc servo flutter when the mains chucks a slight wobbly.

It's been reported that Jim Thiel ended up using Krell 600 Watt'ers.

Correct type of amp, that will almost double down to 2ohms without breaking a sweat, though the 250 or even 150 watt'ers would do, they all can do the Krell doubling act.
There are many other brands that do the Krell doubling act also, all use Bi-Polar (bjt) output transistors, just like the Krells.    

Cheers George

georgehifi5,679 posts08-27-2019 10:43pm

 And you maybe happy with that, because you don't know better.

Cheers George

   This is an unfortunate reality from those of us attempting to make a helpful suggestion with very little actual in home comparative experience. 

   After owning four makes and in home auditions of three other switching amplifiers I've been using a pair of Hypex nCore 400s to drive my studios monitors that dip down to 3.6 ohms, an Acoustic Image Focus 2R driving a menu of Bass cabinets, and various Velodyne subwoofers. My only suggestion is to listen for yourself.

   I'm a class D fan but I'm not fooling myself either. Their plate glass transparency along with switching amplifiers general lack of congestion make them a tool in my studio. In the living room they're simply no match for the relaxed musicality of my tube amps. All the best with that Ralph, you've got the ears for it. 

m-db:
"I’m a class D fan but I’m not fooling myself either. Their plate glass transparency along with switching amplifiers general lack of congestion make them a tool in my studio. In the living room they’re simply no match for the relaxed musicality of my tube amps. All the best with that Ralph, you’ve got the ears for it. "

Hello m-db,

     ’Plate glass transparency and a general lack of congestion’ is a very good description of good class D sound characteristics. I’m a big class D fan, too, using a pair of D-Sonic M3-600-M monos for my main speakers for music and two additional stereo class D amps for HT, one in bridged mono for the center and one in stereo for the rear surrounds. They all function and sound great and they draw so little juice at idle, I’ve just left them on virtually 24/7 for the past 5 years.
     I usually describe their sound as very detailed, accurate, dynamic, smooth without ever sounding harsh or bright and so neutral they’re like ’the audio ideal of a straight wire with gain’. But ’plate glass transparency’ is very descriptive and really paints an accurate picture. I hope you don’t mind if I steal that phrase.
      I'm also really looking forward to auditioning the class D amp or amps Ralph is creating.  He definitely does have the ears for what good amps should sound like.  Hopefully, he's able to make them reasonably priced since I get the feeling I'm going to be a future customer.

     We all know George will be first in line.

Thanks,
Tim

We all know George will be first in line.

Having a dig are we? well at least you’ve got that one right sunshine. I’ve never been against Class-D, just it’s two Achilles Heels I have a big problem with, switching frequency and dead time. Which gives it that " Plate glass transparency" that you call it, I call it "sterility" and missing harmonic decay.
I’ve always said, ever since I started the the debate about the new GaN technology here way back, that when the GaN Class-D amp becomes affordable to me, with what Technics has done with the SE-R1 with using 1.5mhz switching speed, I’ll be the first in line to get one, and ditch my inefficient hot boat anchors, door stops if you don’t live by the sea.

he’s able to make them reasonably priced since I get the feeling I’m going to be a future customer.

Judging by his offsider Tweak1 by another maker here, that’s going to cost you far bigger than it should.
https://forum.audiogon.com/discussions/which-class-d-amplifier-ps-audio-ghent-nord-merrill-or-other/...

I'm the guy Ric was referring to who previously had a Bryston 14BSST (15 amp version as that's all I could get with my circuit in the old house) and a Modwright KWA 150SE amp to drive my Thiel 3.7s  Before the 3.7s I had Thiel 7.2s.  The room in my old house was huge (19 foot ceiling and over 6,000 cu. ft. that opened into other spaces) and on certain things (both music and movies as I have an integrated system with a Modwright LS 36.5DM preamp) the Bryston 14BSST would go into protection mode from overheating due to the impedance.  I had to build a custom amp stand with fans inside.  The Modwright (amp) drove the 7.2s better but still would get so hot (and the heatsinks are inside the case).  I ended up selling the 7.2s and getting the Thiel 3.7s (when they came out), which, although not as bad as the 7.2s are not an easy load (https://www.stereophile.com/content/thiel-cs37-loudspeaker-measurements).

Anyway the EVS 1200 dual mono amp not only sounds better than the Modwright  KWA 150SE (which was better than the Bryston) in my system, it doesn't even get warm to the touch when I crank it loud.  My current room is not as huge as my old one but it is still a big room (over 3,000 cu. ft.) that opens up into other spaces that are probably a bit bigger than the room itself (system is in the living room which is completing open to the foyer, dining room and most of the kitchen).

The CS5 impedance (https://www.stereophile.com/content/thiel-cs5-loudspeaker-measurements-0) is tougher below around 70Hz but probably not quite as tough as the 3.7s over the rest of the band.  After the EVS 1200 (which I've had for just over a month), I have no desire for anything else.  I'm still tweaking things and had a friend over (he has a Pass Labs amp, XA25, but his room is smaller and his speakers are more efficient and an easier load, Reference 3A Taxims) and he was quite impressed with the sound he heard from my system.