2. amps-preamps
  3. 150690-2029

What Class D amps will drive a 2 ohm load

Just asking.

I see specs into 4 ohms but nothing into difficult speaker loads (like Thiel CS5's).

Thanks for listening, 

Dsper


dsper
matiasreccius's avatar
matiasreccius
41 posts
 
For about $3k you can get an nCore NC1200 based stereo amplifier from Nord/Apollon that drives 2 ohm speakers with 1200W. Plus your choice of Sparkos or Sonic Imagery discrete opamps to flavor to taste.

IMO this is a huge value.

I don't need that much power and settled on "only" 550W in 2 ohms of the NC500 for my Thiels. That is plenty of power, lowest distortion and non existing hiss and noise.
georgehifi's avatar
georgehifi
10,312 posts
 
You guys are just p***ing against the wind quoting big watts, and not quoting the wattage for each halving of impedance at 8, 4, and 2ohms

It’s not about the big watts, Class-D P.A. amps like Crown ect can do that. It’s about the amp being able to come close to doubling it wattage for every halving of impeadance 8, 4, and 2ohms!

The classic massive Mark Levinson ML2 mono blocks at only 25w into 8ohms will sound better into into these speakers than any 10,000w Class-D, because it can double it’s 8ohm wattage all the way down to 1ohm ( 25w 50w 100w 200w). Which means it can "DRIVE" these speakers

Granted it won’t do party levels because after all it’s still only 25w at 8ohms , but it will p**s all over your ice power class-d for sound quality, into these types of speakers.

Cheers George
golfnutz
231 posts
 

+1 George

"I know someone using the Icepower IceEdge modules on his Thiel CS3.7's and he can blast it all he wants. I have tested the IceEdge module to do 1000 watts at 2 ohms."

It was posts like this that sucked me into thinking these amps (Icepower 1200AS1/2) practically had no limit. Hopefully, anyone with speakers lower than 4ohm minimum won't get burnt by the hype.

mapman's avatar
mapman
22,322 posts
 
Very few amps are capable of handling that.   In that Class D amps are very efficient, no reason to think they can't.  

Someone bring over a pair of Thiels and we can find out.  I've considered taking the Thiel plunge armed with my BelCanto ref10000m amps on several occasions.   
golfnutz
231 posts
 

OP is asking about Class D amps rated for 2ohms. One of the suggested amps (1200AS1/2) is rated at 2.7ohms. This module also has a clipping indicator built into the controller. It would make sense to me that the clipping indicator was active to see how well the amp is doing. I doubt B&O had something like the CS3.7's in mind when developing this module.

Based on OP's last post,  it seem the question is if there's a Class D amp that drops down to 2ohms without any issues, while maximizing the speaker to it's full potential. Not a Class D amp that only allows a speaker system 40-50% of it potential. Is there a Class D amp that will do this, if so which ones. According to OP, the 2 that were mentioned failed.

More to discover