Hi all,
I have an Audiolab 8000 amplifier I picked up at a boot sale and would like to establish what it's capable of, since subjectively the power output seems a bit on the low side when driving recommended speaker loads. Anyway, ideally I'd like to use an 8 ohm 100W power resistor as a dummy load for each channel and then measure the p-p voltage output across it on a scope with the amp turned right up. Trouble is, I don't have such a resistor and was wondering if there's any suitable substitute? I recall someone somewhere using a car headlamp bulb but I doubt they come as 8 ohm units so some sort of elaborate series/parallel combo of lamps would be necessary to get that value. Has anyone a better idea? cheers, CD.