"Cursitor Doom" wrote in message ...

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.




Here's another idea:
Get a reel of this -
http://uk.farnell.com/pro-power/ecw0...25m/dp/1230984

By my calculations it will have a resistance of 4.25 ohms. (117m of the
125m length gets you 4 ohms)
Although it is only rated at 0.8A, I reckon you could extend that massively
by unravelling it all and laying it in a large container of water.
You could even have a flow of water through the container to keep the
temperature down.

It would be interesting to find out what power rating this could actually
tolerate.

Or is this a really stupid idea?! (For some reason this amuses me)



Gareth.