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Old 19th August 2002, 06:21 PM   #1
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Default Dummy - load

Hi all,

What sort of dummyload is best for testing amps ?

I have a ohmic load that can be used for amps up to 200 W (both 4 and 8 ohm). But is it enough to just use an ohmic load, or do I need to add a capacitor or inductor ?

What do you all use when testing ?

How about modelling a speaker with crossover, how is that done ?

thanks

\Jens
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Old 19th August 2002, 08:36 PM   #2
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More Gratuitous Haiku:

On bench, dummy loads
For best subjective results
try loaded dummies

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Old 19th August 2002, 08:41 PM   #3
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Thanks Mr. Pass

He he funny, but on a serius note what do you use ?

\Jens
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Old 19th August 2002, 09:01 PM   #4
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Those big 250 watt Dales that you've seen, mounted
on old Threshold sinks.
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Old 19th August 2002, 10:59 PM   #5
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That's my dummy load.
Attached Images
File Type: jpg lo.jpg (64.2 KB, 692 views)
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Old 19th August 2002, 11:09 PM   #6
skaara is offline skaara  Slovenia
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I make my own resistors (4 resistors, 2x8ohm and 2x4ohm) for dummyload.. I used cekas wire (this wire is used in big electric cookers, i get it when we went in factory that makes them with school..), one resistor can handle some kW I guess.
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Old 20th August 2002, 01:12 AM   #7
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You can always dump the resistor(s) on a bucket of water... not nice, but it works like a charm
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Old 20th August 2002, 06:03 AM   #8
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So all of you just use an ohmic load.

I guess mine is fine then

\Jens
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Old 24th August 2002, 08:51 AM   #9
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You can put your resistor(s) in parallel with a 2uF capacitor for a better test. Just be warned that some amps won't like it.
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Old 24th August 2002, 09:06 AM   #10
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Default Loads of fun

Hi Kilowatt

Well, I heard from a fellow dane to put 1 F parallel over the resistors. Haven't tried it yet, but I'll post the results (I hope that nothing will be burned)

Thanks

\Jens
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