GAA's Tweed Princeton Clone BOM


5F2-A Princeton with following changes:
Replace Fender PT & OT with Hammond
SS Rectifier instead of 5Y3, substituted lower voltage PT
Slightly different power supply chain (33uF->120/5W->22uF->5K/2W->22uF->15-20K->10uF)
Standby switch added
Pot for variable negative FB
Replace grid resistor with 250K pot for master volume
Eliminate Mic input
Hum balance resistors for filament

  Part Price Qty   Supplier or Mouser Part #  
1 Hammond Chassis   1 9.90 STF 10x6x2
2 270DX PT 39.50 1 39.50 STF 275V@90mA, 6.3V@3A, 5V@3A
3 125E OT 30.50 1 30.50 STF  
4 Octal Socket 2.25 1 2.25 STF  
5 9 pin socket 2.35 1 2.35 STF  
6 AC Jack 1.00 1 1.00 161-0707-1  
7 1/4" NS jack 2.25 1 2.25 502-11 Speaker jack
8 1/4" jack 2.50 1 2.50 502-12A Input jack
9 1MA pot 1.25 2 2.50 31VJ601 Volume, tone
10 Pilot Light 3.18 1 3.18 606-5100-822  
11 Lens 0.50        
12 6.3V lamp 0.38 1 0.38 606-CM47  
13 Fuse Assembly 2.00 1 2.00 5767-345321  
14 Fuse 1A 0.83 1 0.83 5760-13001  
15 Switch DPDT 3.00 1 3.00 10TE007 Power switch
16 Switch SPST 3.00 1 3.00 10TE006 Standby switch
17 Gnd lugs 0.12 5 0.60 534-918  
18 33uF/475V 2.94 1 2.94 140-XAL450V33  
19 22uF/475V 2.10 2 4.20 140-XAL450V22  
20 10uF/475V 1.29 1 1.29 140-XAL450V10  
21 22uF/50V E 0.25 2 0.50 140-XAL50V22  
22 10uF/50V 0.25 2 0.50 140-XAL50V10 Alternate cathode caps
23 .02uF/400V 0.21 2 0.42 140-PF2G203K  
24 500pF/500V 0.14 1 0.14 140-CD500F6-501M  
25 .005uF/500V 0.18 1 0.18 140-PF2G472K  
26 1M 0.12 1 0.12 281-1.0M  
27 220K 0.12 1 0.12 281-220K  
28 100K 0.12 2 0.24 281-100k  
29 68K 0.12 1 0.12 281-68k  
30 22K 0.12 2 0.24 281-22k  
31 4.7K 0.12 1 0.12 281-4.7k Option: replace 22K feedback with 4.7K+100K pot
32 100K pot 1.25 1 1.25 31VA501  
33 470/1W 0.12 1 0.12 281-470  
34 1.5K 0.12 2 0.24 281-1.5k  
35 250K A pot 1.25 1 1.25 31VA503 Replace 220K grid resistor
36 100R 0.12 2 0.24 281-100 filament balance
37 120/5W 0.49 1 0.49 286-120 voltage drop after 1st cap
38 2K/2W 0.19 1 0.19 282-2.0k screen dropping resistor
39 15K 0.12 1 0.12 281-15k  
40 0-10 knobs (4) 1.26 4 5.04 45KN021 Volume, tone, master,feedback
41 12AX7LPS 9.95 1 9.95 Triode  
42 6V6 15.00 1 15.00 Triode  
  Total     150.76    
  Mouser Total     41.31    
             
             

  Front: in, master,vol, tone, standby, power, lamp
  back: AC, fuse, feedback, speaker

Supplier URLs    
STF   http://www.stf-electronics.com/
Triode   http://www.triodeel.com/
Mouser   http://www.mouser.com/

By gaa