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Audio and Video Talk
The Vintage Audio Section
Sugden a21
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<blockquote data-quote="marantz123" data-source="post: 860168" data-attributes="member: 16849"><p>This amp has carbon composite resistors in the signal path. If these resistors (normally 10% tolerance) are within spec, or up to +-15%, then they are most probably ok. If out of spec, replace with carbon film 0.5w 5%. This is the most affordable and will keep the amp closest to the sound signature. Its a classic vintage piece and to keep its value and vintage sound signature, one should only change what needs to be changed. Its a personal choice though. Changing electrolytics, and if needed, upgrading to better safety capacitors is probably where I would go. Have personally experimented with revoicing preamp stages with metal film resistors and its just not a vintage amp anymore. I stress again...its a personal choice and up to the owner to decide what he wants to do with a classic amp, but respect for the original signature and maintaining the value of the piece should be considered.</p></blockquote><p></p>
[QUOTE="marantz123, post: 860168, member: 16849"] This amp has carbon composite resistors in the signal path. If these resistors (normally 10% tolerance) are within spec, or up to +-15%, then they are most probably ok. If out of spec, replace with carbon film 0.5w 5%. This is the most affordable and will keep the amp closest to the sound signature. Its a classic vintage piece and to keep its value and vintage sound signature, one should only change what needs to be changed. Its a personal choice though. Changing electrolytics, and if needed, upgrading to better safety capacitors is probably where I would go. Have personally experimented with revoicing preamp stages with metal film resistors and its just not a vintage amp anymore. I stress again...its a personal choice and up to the owner to decide what he wants to do with a classic amp, but respect for the original signature and maintaining the value of the piece should be considered. [/QUOTE]
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Audio and Video Talk
The Vintage Audio Section
Sugden a21
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