Instructions
7 
Connect a 2 x 12V / min. 100mA transformer with power connector 
SK1 (e.g. our 212007C). This is a 2 x 12V 3-wire transformer, 1 wire is 
the common 0 and generally of another colour. 
A transformer without connecting wires will be marked 12 – 0 – 12. 
 SK2 :  input 
 SK3 :  output 
10. Dual RCA Jacks 
 RV1 :  A 50K (Volume)   
 RV2 : B 50K (Bass) 
 RV3 :  B 50K (Treble) 
11. Potentiometers 
RV1
12. Test 
1
0
0
m
A
12V 
12V 
0V 
Construction 










