SL-1176-KIT 
Assembly Instructions 
updated 24 february'06

FET / Input Amplifier PCB 

Below are two images of the FET / Input Amplifier PCB, blank and assembled, so you can check your work.  Because the resistors are 1%, metal film, Color Codes are provided for each part in the Table below.  The Schematic is now a PDF file.  Click here for the Parts List Spread Sheet. 

NOTES

No matter which transformer you choose -  Cinemag, Sowter or St. Ives 31267 - all have a 4:1 ratio suitable for our version of the 1176, so do not install R1 on the FET input PCB. 

R1 is a "load" resistor that should only be used with the original 1176 front end -- a 600-ohm T-attenuator (Input Level) followed by a 1:1 transformer.  Using  R1 with the Neve style input circuit will reduce the sensitivity, change the gain structure and mess with your mind. 



 



 

TABLE: Resistor Color Code for SL-1176-KIT FET / INPUT Amplifier PCB
 
Part

Designation

Value
Color Code
     
R1
270
Red-violet-black-black
R2
27K
Red-violet-black-red
R3
10K
Brown-black-black-red
R4
1K
Brown-black-black-brown
R5
2.2M
Red-red-black-yellow
R6
2.2M
Red-red-black-yellow
R7
562K
Green-blue-red-orange
R8
182
Brown-gray-red-black
R9
182
Brown-gray-red-black
R10
150
Brown-green-black-black
R11
82.5
Gray-red-green-gold
R12
2k15
red-brown-green-brown
R13
1M
Brown-black-black-yellow
R14
22K
Red-red-black-red
R15
6K81
Blue-gray-brown-brown
R16
6K81
Blue-gray-brown-brown
RT1
100
This is a POT!