I bought a used 400a Cascode ten or more years ago and it's served faithfully, played daily (when I'm at home). It's still going strong, but I have a new (to me) amp to take it's place for a while. I want to have it restomod'ed and was wondering what the latest recommendations are.
I'm not qualified to do it myself, but a friend is a great amp tech. I promised to find him a list of things to check/replace. My searches didn't turn up anything that isn't years old.
What are the latest recommendations? I love this amp and want to give her everything she deserves.
I'm not qualified to do it myself, but a friend is a great amp tech. I promised to find him a list of things to check/replace. My searches didn't turn up anything that isn't years old.
What are the latest recommendations? I love this amp and want to give her everything she deserves.
replace all electrolytics
check temperature of outputs - you'll need temp. probe for that; if there is more than 10C difference between (any) transistor case and heatsink right beside , you need to dismount all of them , clean old grease, put new one and mount all back
it's best doing that one by one , to prevent mix-up 😉
you'll find some papers here : Nelson Pass related | Zen Mod Blog
I'm sure somebody will chime in with more ideas ......... I remember there is one Treshold amp with possibility to convert from AB to deep(er) A class , but forgot which one exactly
check temperature of outputs - you'll need temp. probe for that; if there is more than 10C difference between (any) transistor case and heatsink right beside , you need to dismount all of them , clean old grease, put new one and mount all back
it's best doing that one by one , to prevent mix-up 😉
you'll find some papers here : Nelson Pass related | Zen Mod Blog
I'm sure somebody will chime in with more ideas ......... I remember there is one Treshold amp with possibility to convert from AB to deep(er) A class , but forgot which one exactly
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