Class D is just Dandy!

Erik,

Just to add a bit about the Scintillas. Sure, they are closer to a short over the entire audio frequency spectrum than any other speakers to date. It is not that hard to design a conventional linear class A amp to deal with that which I have done. But what compounding to the low impedance problem is their efficiency, and if I remember correctly, Stereophile’s measurement came up with was in the mid 70 dB or so. And Here is where it is an equally challenging task to deliver substantial power into such low impedance and inefficient load.

Henry

Henry

It is very rare to find a Scintillas owner.  Are you located in Texas?

Former owner I'm afraid.  Parted with them many years ago - the original owner wanted them back.  Today I have a system based on the BG72 ribbon and 6 Carver hex cone woofers, and I just finished restoring a set of Carver Amazing Platinums with NOS ribbons and new woofers.  

- John

P.S.  Yes, I'm in Texas, the DFW area.

Kenny

Unfortunately, I am not very well equipped with instruments to perform such tasks.

Do you have a computer / laptop with audio out?  Then all you need is REW (Room Equalization Wizard) which is free and a mic.  You can get a USB mic with a reference curve here for a very reasonable price.
http://cross-spectrum.com/measurement/calibrated_umik.html

- John

Hi @h2oaudio

Oh, agreed. In many cases a top octave roll-off may be much better sounding than a flat amp.

Also room dependent.

Best,


E

I have a new Red Dragon S500 I eventually will try out,haven't got too it yet,will be a diff. class d module then the ncore's I do have.
I will write a comparison review when I do try them.

Has anybody else tried this amp and what speakers do you use them with.

Kenny.