hot box!
Posted: Sat Dec 12, 2015 9:50 am
Greetings dubbers!
long time i didn't post here.... happy to see that when talking about fisher reverb on the web, Interruptor remains THE reference website to get info abouts this unit!
Anyway, by "hot box" i mean 2 things: hot because it's a really good unit with splendid sound , both dry and reverberated signal are relly good! mine is quite silent, dry is really clean, revrb has little humm/hiss but really on the back...
and hot because the chassis , after 3 hours of use, is getting really really super hot!!! i use a converter 220 to 120 (not 110 but 120!)before the unit and the selenium rectifier is the original one (rated at 250v if i'm not wrong). all parts and tubes are originals, i'm planning to recap it, change the rectifier for a 400v 8a as suggested by Dr Zee. and also make some mods, but i wanted to test it before....
is this temperature normal? hotter than my soundcraft CPU! and i can tell ya this soundcraft cpu is really hot when used several hours!
another question concerning the power transformer, in the future i want to change the 110 original one for a 220v.... but i'm questionning myself about secondary part of the power transformer (power and intensity)... i saw two interesting transformers, first one is the fender 6g15 reverb unit transformer rated at 250vac/25mA & 6,3vac/1A at secondary and second one is a Carnhill toroid rated at 240vac/30ma & 6,3vac/1A.
both are around 50$...
any suggestions? is 240 or 250 too much? around 200 would be better? i'm little confused with this part...
Peace&dub
manu.
long time i didn't post here.... happy to see that when talking about fisher reverb on the web, Interruptor remains THE reference website to get info abouts this unit!
Anyway, by "hot box" i mean 2 things: hot because it's a really good unit with splendid sound , both dry and reverberated signal are relly good! mine is quite silent, dry is really clean, revrb has little humm/hiss but really on the back...
and hot because the chassis , after 3 hours of use, is getting really really super hot!!! i use a converter 220 to 120 (not 110 but 120!)before the unit and the selenium rectifier is the original one (rated at 250v if i'm not wrong). all parts and tubes are originals, i'm planning to recap it, change the rectifier for a 400v 8a as suggested by Dr Zee. and also make some mods, but i wanted to test it before....
is this temperature normal? hotter than my soundcraft CPU! and i can tell ya this soundcraft cpu is really hot when used several hours!
another question concerning the power transformer, in the future i want to change the 110 original one for a 220v.... but i'm questionning myself about secondary part of the power transformer (power and intensity)... i saw two interesting transformers, first one is the fender 6g15 reverb unit transformer rated at 250vac/25mA & 6,3vac/1A at secondary and second one is a Carnhill toroid rated at 240vac/30ma & 6,3vac/1A.
both are around 50$...
any suggestions? is 240 or 250 too much? around 200 would be better? i'm little confused with this part...
Peace&dub
manu.