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
" Having read this very interesting discussion in its entirety several times I have to ask the commentators a question since neither the pros or cons truly answered the original Inquiry.
Let's say I want to take a plunge into class D but do not want to revamp my entire system and the speakers in user are rated at 90db efficiency with nominal impedance of 8 ohms 3ohms minimum. Can a class D amplifier (let's use 300w per channel)do justice and get the best or close to the best from the speakers?
Let's hear your opinions."

I've already noted how easily the AS1200 can drive my Thiel 3.7s.  These -  https://www.muraudio.com/sp1  (and it indicates 2 ohm minimum and they are not super efficient) were used by Merrill Audio at the 2019 Florida Audio Expo and sounded great.  I've seen a bunch of other examples at shows in big rooms (e.g. 2017 RMAF with a Wyred4Sound Class D driving Acoustic Zen Maestro speakers (87 db and rated 6 ohms nominal).  I think will any product, it is too general to just say Class D as if they are all identical (same is true of any other type of amp).
gillatgh
speakers in user are rated at 90db efficiency with nominal impedance of 8 ohms 3ohms minimum. Can a class D amplifier (let’s use 300w per channel)do justice and get the best or close to the best from the speakers?

You ask to get close to or the best from these speakers

Show a impedance graph with -phase angle overlay, as what you asked for can’t be answered properly, even using the 3000w!!! Behringer Class-D.

You say that speaker has a minimum load of 3ohms, if that’s in the bass and you have it in conjunction with a -phase angle of 50 degrees the amp could be seeing even 1ohm as a load, and I know of no class-D that can take that.

That’s why you never see Stereophile tests on Class-D’s that go down into the 2ohm testing, because they mostly **** themselves when it’s done.

Cheers George





I’ve already noted how easily the AS1200 can drive my Thiel 3.7
https://www.stereophile.com/images/archivesart/1208T37fig1.jpg

Yes they can drive them, but I’m 100% sure your not hearing the very best from them.
As your the one who asked " Can a class D amplifier do justice and get the best or close to the best from the speakers?"

Cheers George
Post removed 
Yes - definitely getting the best from the 3.7s vs. other more expensive amps (and not just my opinion as others have heard it in my system with Class D and I'm not talking about non-audiophiles but people who have gone to shows and heard really expensive high end systems).  Now I'm not saying that there aren't products out there (as there are many products consisting of different amp classes) that might sound better (I can only offer actual experience, vs. theories which are just that and not particularly useful vs. actual in home listening and including the reaction of others who have heard it in my system in my room and no need to insult others who can hear vs. someone who has not heard the system in the room).  That does not mean that it is the last word in amplification. Upon my first listen (after breaking in a Class D amp), I was shocked how well it drove the 3.7s and how much better it sounded than two highly regarded non-class D amps with list prices of around $9k.

George, with all your comments on various threads, why not just start a new thread about the theoretical disadvantages of Class D?  Would not that be better to have all that discussion organized in one thread?  Once would think (at least I would, others can disagree of course)  that it would be far more productive than insulting other peoples (and a bunch of people who have had separates for 30- 40 years) hearing.  Personally, I just don't see the point of regurgitating the same comments with a complete lack of actual experience with the room and the components and speakers. When I had a friend who worked at a high end shop many moons ago and did virtually all his set-ups in deliveries with him (and I'm talking some two channel systems with around $150k in costs going back more than a dozen years), I learned very quickly not to say that for example a particular speaker is always wonderful sounding (I heard pairs of speakers I previously owned that sounded like complete crap in another room).  I don't take any of your comments personally (or those by anyone else btw).  I can't take anyone all that seriously who makes comments without actually hearing things (and I would have no problem if you heard it and posted all over here that my system actually sucked in your opinion).  Not trying to start anything.  Just think it would be best to get all points of view concentrated in appropriate threads (and would be fine if this thread was linked in a new thread - much betting than making comments that really are not that relevant - if you think they are, then why don't post your actual experience using Class D vs. other classes of amps driving Thiel 3.7s or 5s and if you don't have any that is basically what I'm saying - theories are fine and at one point the earth was flat according to one as well)