visio-hammond ao-39 conversion - sluckey ampshammond ao-39 conversion to modified vox ac-15 lite...
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Hammond AO-39 conversion to modified Vox AC-15 LiteDrawn By Steve Luckey 09/25/2012
D
4Ω SPEAKER
A
.01uF
150/5W
470K
.01uF
470K
100K8.2K
2
2
3
7
9
3
2
7
9
B
1
3 50uF
8.2K
V212AX7
V3EL84
V4EL84
C
140/5W
C
7
8
6
82047K470K
470K
.01uF
.022uF
100K
303
288
10
305
202
203
40
41
59
0
0
Hammond AO-23281-0
2 X 32µF 2 X 32µF
6.3 VACfilaments
2.2K / 5W 8.2K / 2W
A309 VDC
B288 VDC
C270 VDC
315 VAC
315 VAC 48
6
Voltages measured with Fluke 87V DMM. All controls max CCW. Line = 120VAC.
V5V4V2V1
4 5 5
449
5
V55Y3
2
5 VAC
V3
4
9
5
LINE VOLTAGE = 120VAC
2 AMPSLO BLO
D268 VDC
250 / 10W 1K / 2W
Hammond AO-23279-1
1M
2.2K
220K
25µF
3
47K
V1EF86
8
9
.1µF
6
1
Pins 2 and 7 are grounded
1M
360pF
5.1M
5.1M
5.1M
5.1M
5.1M
500pF
.0015µF
.0022µF
.0047µF
.01µF
VOL 500KA
180pF
Cut250KA
.005uF
5
4
1 2 3 4 5 6 7 8 9V1 86 0 2.1 htr htr 73 0 2.1 0V2 202 40 59 htr htr 203 41 59 htrV3 nu 0 10 htr htr nu 303 nu 288V4 nu 0 10 htr htr nu 305 nu 288
TUBE VOLTAGE CHART
73
86
2.1
5.1M resistors not needed if using a make-before-break switch
2 X 32µF 2 X 32µF
4Ω SPEAKER
6.3 VACfilaments
2.2K / 5W 8.2K / 2W
A309 VDC
B288 VDC
C270 VDC
315 VAC
315 VAC 48
6
Voltages measured with Fluke 87V DMM. All controls max CCW. Line = 121VAC.
Hammond AO-39 conversion to MARSHALL 18 WATT LiteDrawn By Steve Luckey 02/27/2011
V5V4V2V1
4 4 5 5
4499
5 5
V65Y3
2
5 VAC
V3
4
9
5
LINE VOLTAGE = 121VAC
2 AMPSLO BLO
3
2
1
820 50uF
100K
V112AX7
D
1M
33K
6
7
8
A
.01uF
150/5W
470K
.01uF
470K
100K8.2K
2
2
3
7
9
3
2
7
9
B
1
350-500uF
8.2K
V312AX7
V4EL84
V5EL84
C
140/5W
C
7
8
6
.005uF
470pF
Volume500K-A
Tone500K-A
.005uF 82047K
470K
470K
.01uF
.022uF
100K
D268 VDC
250 / 10W 1K / 2W
303
288
10
305
202
203
40
41
59
137
1.0
00
0
Hammond AO-23281-0
Hammond AO-23279-1