[Eeyore]

Arny Krueger wrote:

"Eeyore" wrote in

So what's the THD of your QSC USA amplifier @ 100mW / ~
900mV with a speaker load ? That's YOUR reality.

I rummaged around and found some test data I took some years back at a power
level of 1 watt into an 8 ohm resistive load.

Test 1: sine wave test with 1 KHz tone.

Stimulus 1 was 1 watt @ 1 KHz into 8 ohm resistive load:

All harmonics through approx 40 KHz were 96 dB or more below 1 watt.

In that case your test was defective.

Even by QSC's specs I'd expect no better than -60dB.

Graham