Vectronics VEC-1680K User Manual
Page 5
VEC-1680K Owner’s Manual
Vacuum Tube Preamp
5
instructions. If you can't positively identify an unfamiliar item on the basis of the
information given, set it aside until all other items are checked off. You may
then be able to identify it by process of elimination. Finally, your kit will go
together more smoothly if parts are organized by type and arranged by value
ahead of time. Use this inventory as an opportunity to sort and arrange parts so
you can identify and find them quickly.
" Qty
Part Description
Designation
VEC P/N
!
2
100 ohm 2 watt resistor (brn-blk-brn)
R12, R13
104-2100
!
2
3.3K ohm ½ watt resistor (org-org-red)
R1, R11
101-3330
!
2
10K ohm ¼ watt resistor (brn-blk-org)
R5, R7
100-4100
!
1
22K ohm ¼ watt resistor (red-red-org)
R8
100-4220
!
2
390K ohm ¼ watt resistor (org-wht-yel)
R3, R4
100-5390
!
2
1M ohm ¼ watt resistor (brn-blk-grn)
R2, R6
100-6100
!
2
500K chassis mounted potentiometer
R9, R10
153-5500-1
!
1
.01 uF disc ceramic capacitor (103)
C7
200-2100
!
2
.1 uF disc ceramic capacitor (104)
C10, C11
200-3100-1
!
2
.22 uF multilayer capacitor (224)
C3, C9
220-3220
!
3
10 uF 350 volt electrolytic capacitor
C1, C2, C6
270-5100x-6
!
3
100 uF 25 volt electrolytic capacitor
C4, C5, C8
270-6100-1
!
1 1N4148
diode
D6
300-4148
!
5 1N4007
diode
D1-D5
300-4007
!
1 12AX7
tube
V1
380-12AX7A
!
1
12.6 volt 1 amp power transformer
T1
406-1114
!
1
Power switch, SPST
SW1
507-1028
!
1 Relay,
2P2T
RLY1
408-2042
!
3
¼” phone jack
J1, J2, J4
601-1005
!
1
2.1mm power jack
J3
601-6121
!
1
Power Adapter, 12 VAC @ 1 amp
407-1072
!
1
Tube socket, 9 pin
625-12AX7A
!
2 Screw,
2-56
652-0375
!
6 Nut,
2-56
705-0256
!
6
Screw, self-tapping, type B
654S-0250B-B
!
6
Screw, 6-32 x ¼”
656-0250
!
2
Kep Nut, 6-32
705-0632-K
!
3
Nut, metric 9mm
706-7075
!
3 Flat
washer
710-2550
!
2
Spacer, ¾” threaded 6-32
716C-0750
!
2 Knob
760-0033
!
1
Shielded wire, RG316 (12”)
878-0316
!
1
Orange and white twisted pair (4”)
871-2239
" Qty
Part Description
Designation
VEC P/N
!
2
Hook-up wire (12”)
871-24xx-1200
!
1
PC board, 2 sided
862-VEC1680
!
1 Chassis,
punched
800-VEC1680
!
1 Chassis
plate
804-VEC1680
!
4
Stick-on rubber feet
770-1162