Post by roly on Jun 29, 2021 20:56:16 GMT -5
Can't find the thread where you asked if I had serviced any mic amps, so maybe the mods can put this where it belongs.
I have serviced 5 McCurdy AU300s.These days, if you can find them they go for about 1500 per channel.
All tube, Hammond transformers in and out.
I replaced all the caps including 3 .47 goliath caps per channel and four old leak'omatic yellow Astron .05 uF caps per channel.
Getting at the Astrons was challenging, pretty much had to disassemble the whole thing to get at them.
I also built a new power supply for the rack.....that's enough snot for 24 9 pin tubes.
There are no electrolytic caps in the signal chain.
Have also done things like fix VU meters on some DBX 160VU comps, replace opamps, restored some Scully preamps laden with UTC transformers.
Despite my successes, I don't really know what I am doing, that's why I often seek advice here.
cheers Roly
PS....I lost track of the number of amps I have built somewhere after 30....that was about three years ago.
It's a small pond up her so it's a good situation for me.
I have serviced 5 McCurdy AU300s.These days, if you can find them they go for about 1500 per channel.
All tube, Hammond transformers in and out.
I replaced all the caps including 3 .47 goliath caps per channel and four old leak'omatic yellow Astron .05 uF caps per channel.
Getting at the Astrons was challenging, pretty much had to disassemble the whole thing to get at them.
I also built a new power supply for the rack.....that's enough snot for 24 9 pin tubes.
There are no electrolytic caps in the signal chain.
Have also done things like fix VU meters on some DBX 160VU comps, replace opamps, restored some Scully preamps laden with UTC transformers.
Despite my successes, I don't really know what I am doing, that's why I often seek advice here.
cheers Roly
PS....I lost track of the number of amps I have built somewhere after 30....that was about three years ago.
It's a small pond up her so it's a good situation for me.
