Class D is just Dandy!

Erik,
Class d amplification is just "DANDY".
Thank You for starting this thread.

Kenny.

@kdude66

Thanks and welcome! :)

Erik

One thing I'd like to see for the nCore modules which I can't find is output phase angle. If anyone can point me to a doc which has this I would appreciate it.

I notice that the ICEPower units do have some phase shift involved. It is minor compared to what your average multi-driver speaker and crossover will do, but it's significant. This is something the Technics SE-A1 compensates for in the input.

Erik,
Buried on page 5 of the NC400 spec sheet is the figure relating to output coil inductance. Typically, 10uH. This equates to an output impedance of 1.25 Ohms at 20kHz and SIGNIFICANT phase shift within the audio band.

Page 8, graph 9.1 is particularly telling. -0.5dB @ 20kHz is nothing to write home about. It also suggests serious phase shift problems well down into the audible spectrum.

I remember seeing more info somewhere about this,but I did'nt save it.

This is related to the nc400 only but I did'nt stress about it too much I just continue to enjoy them.I do like my 600 m's more than the 400, but I'm using my nc400 right now.

I hope this points u in the right direction,I way spend some time later looking for more info.
Kenny.

Hi Kdude,

That output coil is perfectly in line with the output coil in many SS amps.

Based on my simulations, this ends up being no more than about 10 degrees of phase shift at the top end. Far better than ICEPower. :)

Best,

E