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Here's what I currently have
available for Ampeg schematics. If you are able to provide schematics,
please let me know.
Many thanks to Joe Piazza for
providing his drawings for many of these. Joe has these schematics, as
well as others of other manufacturers, on his own web
page.
Also, in response to requests,
Joe Piazza is now providing voltage charts for many of the schematics
that he has drawn and provided. If you need voltage charts, please follow
the link to his page.
These schematics are for older
Ampeg products. If you have a modern Ampeg (manufactured since 1986, by
St. Louis Music), call 1-800-738-7563 for schematics and information,
or find other contact option on their official
web site. If you have a Lee Jackson-designed Ampeg amplifier, you
can go to his web page
or email him directly at ampguru@aol.com
for more information.
NOTE:
There are those that have been downloading these schematics, putting them
on a CD-ROM, and selling them on eBay. Don't be fooled. They're the same
schematics. Neither Joe Piazza, who drew most of these, nor I make
a penny from providing these; our intent is to help you fix your amp,
not to profit from you. I think it's pretty crummy for someone
to be making money from this when we put these here for free, especially
since this person put 0% effort into collecting or drawing them. This
person is a turd. (Almost as bad as the guy that did the same thing,
but wiped Joe's name off his drawings.) |
- 625D
(117k) (scan of power and preamp schematics)
- 625D
(137k) (scan of tube chart and parts lists)
- AC-12
(18k) (drawn by Joe Piazza)
- J-12-A
Jet (7591A version) (18k) (drawn by Joe Piazza) (corrected version
uploaded December 16, 1996)
- J-12-B
Jet (6V6 version) (12k) (drawn by Joe Piazza)
- J-12-D
Jet (7591A/6BK11 version) (14k) (drawn by Joe Piazza)
- EJ-12-A
Echo Jet (12k) (drawn by Joe Piazza)
- G-12
(22k) (drawn by Joe Piazza)
- Gemini
II (23k) (drawn by Joe Piazza)
- Reverberocket
2 (18k) (drawn by Joe Piazza)
- Gemini
VI (23k) (drawn by Joe Piazza)
- Gemini
22 (27k) (drawn by Joe Piazza)
- SB-12
Portaflex (16k) (drawn by Joe Piazza)
- SB-12
Portaflex (7868 version) (16k) (drawn by Joe Piazza)
- M-12
(6V6 version) (14k) (drawn by Joe Piazza)
- M-12-A
(7591A version) (14k) (drawn by Joe Piazza)
- M-15
(6L6 version) (14k) (drawn by Joe Piazza)
- R-12-A
Reverberocket (5Y3/7591A version) (14k) (drawn by Joe Piazza)
- R-12-R
Reverberocket (5Y3/6V6 version) (18k) (drawn by Joe Piazza)
- R-12-RT
Reverberocket (6BK11/7868 version) (17k) (drawn by Joe Piazza)
- R-12-RB
Reverberocket (7591A version) (23k) (drawn by Joe Piazza)
- R-15-R
Supereverb (18k) (drawn by Joe Piazza)
- ET-1
Echo Twin (23k) (drawn by Joe Piazza)
- ET-2B
Super Echo Twin (24k) (drawn by Joe Piazza)
- B-12XT
Portaflex (81k) (scanned)
- B-15N
Portaflex, ca. 1962 (5U4 rectifier) (23k) (drawn by Joe Piazza)
- B-12-NC
and B-15-NC Portaflex, ca. 1964 (23k) (drawn by Joe Piazza)
- B-15N
Portaflex, ca. 1968 (5AR4 rectifier, fixed bias) (23k) (drawn by
Joe Piazza)
- B-15ND
Portaflex, ca. 1967 (6SL7/7199/7027A/5AR4) (18k) (drawn by Joe Piazza)
- B-12Nf,
B-15Nf Portaflex, ca. 1968 (5AR4 rectifier) (23k) (drawn by Joe
Piazza)
- B-15S
Portaflex (113k) (scanned)
- B-18N
Portaflex, ca. 1967 (6SL7/7199/7027A/5AR4) (18k) (drawn by Joe Piazza)
- B-25,
ca. 1968 (23k) (drawn by Joe Piazza)
- V-2
preamp section (18k) (drawn by Joe Piazza) (slightly corrected July
29, 1996)
- V-2
poweramp section (18k) (drawn by Joe Piazza)
- V-3
preamp section (11k) (drawn by Joe Piazza)
- V-3
poweramp section (13k) (drawn by Joe Piazza)
- V-4
preamp section (18k) (drawn by Joe Piazza)
- V-4
poweramp section (23k) (drawn by Joe Piazza)
- V-4B
preamp section (15k) (drawn by Joe Piazza) (corrected September
25, 1998)
- V-4B
poweramp section (18k) (drawn by Joe Piazza)
- V-7
poweramp section (14k) (drawn by Joe Piazza)
- V-9
preamp section (18k) (drawn by Joe Piazza)
- V-9
poweramp section (21k) (drawn by Joe Piazza)
- VT-40
preamp section (18k) (drawn by Joe Piazza)
- VT-40
poweramp section (18k) (drawn by Joe Piazza)
- SVT
preamp section (23k) (drawn by Joe Piazza)
- SVT
poweramp section, 6146b version (23k) (drawn by Joe Piazza)
- SVT
poweramp section, 6550a version (23k) (drawn by Joe Piazza)
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