Bill Of Materials - FadeX4U
=================

QTY  PART-REFS           VALUE               CODE                          
---  ---------           -----               ----                          
Resistors
---------
8    R1,R5-R7,R13,R16,   30.1k                                             
     R25,R27
2    R2,R10              60.4k                                             
2    R3,R11              1M                                                
8    R4,R8,R12,R14,R31,  100R                                              
     R35-R37
15   R9,R15,R17-R22,R26, 10k                                               
     R28-R30,R32-R34
1    R23                 14k                                               
1    R24                 11.5k                                             

Capacitors
----------
4    C1,C3,C5,C8         330pF                                             
2    C2,C6               22uF                                              
6    C4,C7,C9-C12        100pF
11   BP                  100nF                                             

Integrated Circuits
-------------------
2    U1,U3               LM13700                                           
3    U2,U4,U6            TL072                                             
1    U5                  LT1013                                            

Transistors
-----------
2    Q1,Q2               2N3906                                            

Diodes
------
3    D1-D3               1N4148                                            

Miscellaneous
-------------
1    BIAS                100K
2    VB1,VB2             100k  Trims                                           


12V Modifications: 

For 12V operation, please change the following resistors: 

R23 from 14K to 11K 
R25 and R27 from 30.1K to 24.3K 
R24 from 11.5K to 12.1K 

The new range of the CV section should be 0V to -11V, with a crossover point of around -5.5V.