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Old 7th May 2017, 11:20 am   #7
Radio Wrangler
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Join Date: Mar 2012
Location: Fife, Scotland, UK.
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Default Re: Beolit 600 component identity

It's a wirewound resistor. Its size says it's a higher power rating than the little carbon composition one above it. Also it may be run to higher temperatures and that furter boosts the power rating.

The wirewound job will also have a higher peak current rating (more than just that due to difference in power rating) which is what makes it a good choice in output stages.

They don't drift much in value over time

They also make significantly less noise than carbon comps, though this doesn't matter in this application.

They are somewhat inductive, which is again OK here.

It's their expense which stops them being used in more places.

David
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