Good morning (?) to all,
I'm just new on this fantastic forum (but I read it since 2 years ago). I'm an italian sound engineer since 1990 in Bologna, the city of Ducati and Lamborghini. My english is very bad, so I invoke your understanding.
I have a pair of silver7 s/n 012, bought new in 1991, used for about 100hrs up to 1994, then never used.
Now I wish to resuscitate them, but I have some questions:
1- how can I proceed to turn on the amplifiers? I read that, not to damage the capacitors, I must use a variac, rise slowly up to 50v, remain at 50v for 1 hour, rise to 110v, remain for 1 hour, and finally go to 230v (the european voltage). Is this a correct procedure? Must I use a dummy load or an expendable loudspeakers? Must I inject an input signal?
2- My beautiful 3 years old daughter destroyed a 6550 carver signed tube. I think that it's better to replace the 6550 of the power supply, not the 7+7 used in the push pull circuit. Can someone tell me its position? The tubes are arranged in a 3x5 Matrix, as you probably know.
3- is this signal tubes position correct? From left to right: 3x 12bh7a, 1x 12bv7.
4- I have the schematic and original boxes but no owner's manual: where can I buy it?
Thank you very much!!!