I am planning a slight renovation of Regent 1040 amplifier. I would like to change capacitors and potentiometers. The problem is, there are "old type", not standard symbols of them and I have problems finding out the actual values of the parts.

I got the plans of yhis amp, but still there are some riddles for me :]


At first, the potentiometers (as they go from the Input 1 (left) to Input 2 (right):

GAIN: UN (black letters up), RFT (that's the company's name) 47k2 (carved in pot's chassis)

BASS: UN (black letters up), RFT (that's the company's name) 47k2 (carved in pot's chassis)

TREBLE: U7 (black letters in the middle), RFT (that's the company's name) 47k1 (carved in pot's chassis)

MIDDLE: U7 (black letters in the middle), RFT (that's the company's name) 4,7k1 (carved in pot's chassis)

FREQ.: 3dB UN (black letter up), RFT, 2x47k2 (the pot seems to be 'double'? (it is twice as thick and has 6 "legs", not 3)

DEPTH: U9, RFT, 220k3

VOLUME: U9 ((black letters up), RFT, 220k3 (carved in pot's chassis)

REVERB: UD (black letters up), RFT, 100k1 (carved in pot's chassis)





VOLUME: UN, 47k2

BASS: UN, 47k2

TREBLE: U7, 47k1

MIDDLE: UD, 4,7k1

FREQ.: 3 dB UN, 2x47k2

DEPTH: U9, 220k3





And some capacitors:

(these are foil, I think)

KT 220nK (ca. 2cm long, ca. 1cm thick)

15nJ (with a black dot before "15") (ca 1cm long, ca. 0,6cm thick)

10nK (with a black dot before "10")

1000K (ca 1cm long, ca. 0,4cm thick)



Some electrolytic, made by Frolyt:

1/80 UD

4,7/63 V3

2,2/80 UD

47/16 V3

220/10 UD

22/25 V3


And a big one (there are 2 of them), made by RFT

Elyt 4700/63 40/085/56 TGL 5151

Can anyone tell me the actual parameters of the potentiometers and capacitors? I would be glad ;]

Some photos;
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P.S. Ich verstehe Deutsch, also die Antworten können auf Deutsch sein.