Wire-wound resistors are used when a lot of power needs to be dissipated in your amp and usually these are around the output valves for bias resistors. As the name…
This a longer than usual article talking about the different type of resistors. Resistor technology has changed over the decades . What is common is that many types change their…
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A Marshall JCM900 100 Watt Combo arrived in the workshop. This version is the 4102 It was very poorly. The first issues seen were : 10 amp fuse in the plug!!…
The early (1997-2003) Marshall JCM2000 DSL50, DSL100, TSL100 and TSL122 amps are often troubled by an unstable bias (drifting bias). These are nice amps and I have one myself This…