Tube Amp Archive

when i turn up the intensity knob it only lowers the volume?!! would this have to do with the three caps or the bulb and resistor or all of the above?

i've swapped out various known tubes in v4 and v5 with no change.

thanks,
mikeB

thanks to both of you. i'll check out the resistor. since i have to get back in it, i'll check my connections i soldered today also.

i replaced the electrolytics in this amp. overall it sounds much better, but, it has acquired the "breaking surf" sound. could that be a tube or a resistor?
thanks in advance.
mikeB.

i think i'll stick as close to original as possible, but i am curious as to what F&T is.

sprague makes 450, 500, 600 volt capacitors. round the uF to the closest value. i.e. 5uf = 4.7uf, 8uf, 10uf. 10uf = 8uf, 10uf 20uf = 20uf, 22uf if you are keeping the voltage rectifier stock it's a waste of money to buy higher voltage capacitors. I would measure and make sure you have room before y...

hey, thanks for the fast responses!
really appreciate it!!!!

further question: i've heard you should go higher on the voltage. is that really necessary or is that just a precaution? i've heard i should be going up to 600 or so volts.
mikeB.

i'm trying to replace a cap can from a 1965 sears silvertone 1482. the values are 5uf,10uf and 20uf- - 450 volts. i'll be replacing the can with individual caps. i've not had much luck finding these. i have found the 20uf at mouser for $32!! any recommendations as to where to purchase these 3 caps? ...