hypex ncore

[roscoeiii]

many thanks.

[john dozier]

Is the module suitable for use with 8ohm speakers? If so with what power output. Thanks and kindest regards Dr. John Dozier

[back]

Originally Posted by john dozier

Is the module suitable for use with 8ohm speakers? If so with what power output. Thanks and kindest regards Dr. John Dozier

yes it is.

200 watts.

[john dozier]

Thanks. I only asked as I know some class D's are not rated for impedences above 4ohms.

[roscoeiii]

And from my limited understanding it is usually a good sign when an amp "doubles down" in its power from 8 to 4 ohms.

[markusA]

I feel I should know this one but...

How much voltage swing can you get from a Ncore? What are the specs needed for the psu if you want the big voltages?
How low a load impedance is ok to use with these amps?

The questions are relevant to me since I'm considering using ESL's.

[pieter t]

Originally Posted by markusA

I feel I should know this one but...

How much voltage swing can you get from a Ncore? What are the specs needed for the psu if you want the big voltages?
How low a load impedance is ok to use with these amps?

The questions are relevant to me since I'm considering using ESL's.

Isn't it all in the specs?
Max power supply voltage for the NC400 is +/- 72 v; that is some 48 VRMS of maximum output voltage with a higher impedance load.
Isn't 2 ohms indicated as minimum load?
ESL's have their minimum impedance at HF; that is a completely different situation from a low impedance at LF; I should not be worried for the NC400 not being able to drive an ESL.

[roscoeiii]

Just noticed that nice high input impedance value of 200 kOhm. Very nice. I had been reading recently about the Wyred4Sound implementation of the ICEblock modules and it seems that one of their core additions was a buffer stage to raise the input impedance to 60k or so.

[barrows]

Typically, class D amps have not been the best choice for driving electrostatic loudspeakers (as opposed to something like planar magnetics, which rock with class D). But nCore is new, and appears to solve many of the reactive output impedance issues of some class D amps. I think it would be best to seek an answer from Bruno and/or Hypex directly to determine how well an nCore would work with a given ESL. I think a complete impedance curve for the speaker would be good to have them take a look at.

[pieter t]

Originally Posted by barrows

Typically, class D amps have not been the best choice for driving electrostatic loudspeakers (as opposed to something like planar magnetics, which rock with class D). But nCore is new, and appears to solve many of the reactive output impedance issues of some class D amps. I think it would be best to seek an answer from Bruno and/or Hypex directly to determine how well an nCore would work with a given ESL. I think a complete impedance curve for the speaker would be good to have them take a look at.

As for as I know (but correct me if I am wrong) class d amplifiers in general seem to drive ESL's pretty well. I understand that class d amps are good in driving low impedances where a lot of current must be delivered into the load (of course also dependent on power supply capability), but that does not disqualify them at the same time in their ability to drive a more capacitive load.