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In Reply to: Riken Resistors vs. Vintage Carbon Comps in Pilot SA-260 posted by HOK on April 24, 2007 at 20:13:50:
Interesting resistor discussion. I have a stock of 30 year old .5 and 1 watt Ohmite resistors. Assumed they are carbon comp. Was working on a tube preamp signal path, didn't have the values I needed except the Ohmites. I measured until I found < 1%, finished the work and the sound was bad, grainy. Traced the problem to the resistors, replaced with 1% metal film, night and day difference.Anyone have any ideas?
Thanks,
Follow Ups:
Your description of carb comp isn't far off mine, though I prefer non-magnetics over generic metal film. Low temp baking a tray of old Ohmite or AB is an educational experience. I haven't found any yet that didn't spew brown fluid from its body on a bake or solder.
Thermionically addicted.
RDF,Thank-you for the quick response. What resistors (brand) have you had good experiences with?
I really like the Mills wirewounds, unfortunately $4 a pop. Many hate them but I'm also a fan of the much more reasonable PRPs available from Percy or Partsconnexion, not finding them sterile at all (though haven't built an entire amp out yet with them yet.) They've been discussed on this forum, check out past posts and find out if the detractions read to you like strengths too. ;)
Thermionically addicted.
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