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Author
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Topic: gibson amp schematics
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Bill Creller
Member From: Saginaw, Michigan, USA
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posted 12 April 2005 04:09 PM
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Anyone know the site address for gibson to get electronic schematics for gibson amps?
I used the site a few years ago, but can't seem to find it now.
BILL |
James Quackenbush
Member From: Pomona, New York, USA
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posted 12 April 2005 04:41 PM
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Bill,
Which amp do you need the schematic to ?.....JimTry this link ..... http://www.drtube.com/guitamp.htm#Gibson [This message was edited by James Quackenbush on 12 April 2005 at 04:44 PM.] |
Roger Kelly
Member From: Mount Carmel, TN. 37645
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posted 12 April 2005 04:48 PM
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.....or this one. http://www.schematicheaven.com/ |
Bill Creller
Member From: Saginaw, Michigan, USA
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posted 12 April 2005 08:56 PM
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Thanks for the info guys.......it seems that Gibson made two versions of the GA8T Discoverer amp. The early one was produced in 1961 and earlier. The one I have was made from 1962 on.
The schematics from the two sources you two supplied have the early version schematics and only a picture of the late GA 8T, so I'm still looking !!
The one I have has 2 6EU7 tubes, 2 6BQ5 tubes, and a 6AC4 rectifier.
I just replaced the 6BQ5s (EL84)because they were gassy, but the amp works good. My intention is to check to bass and treble circuits to get more bass/less treble.
BILL |
mike nolan
Member From: Long Island City, NY USA
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posted 12 April 2005 09:43 PM
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Hi Bill,
Your amp is from the "Crestline series"GA-8T Discoverer (Crestline) 15W 1x12" Guitar Combo with Tremolo
Speakers: 1x12"
Inputs: 2
Channels: 1
Volume Controls: 1
Tone Controls on Each Channel: Bass, treble
Tremolo: Depth, frequency
Reverb: No
Tubes: 5 (2x6EU7, 2x6BQ5, 6CA4 (correspond to Epiphone EA-35T Devon))
Diodes: 0
Extension Speaker Jack: Yes
Monitor Jack: Yes
Watts Output: 15
Shipping Totals: 1962: 1458, 1963: 1419, 1964: 1769, 1965: 1127, 1966: 6 (new style from 1964) I have quite a few Gibson amps and schematics... but not this one. It is the same as an Epiphone EA 35T Devon.... so if you can find that schematic, you are in business. |
Andy Barlo
Member From: Hammond, Indiana, USA
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posted 13 April 2005 04:48 AM
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Came across this site in regards to your question. They do have some schematics on line, but you may have to contact them for your particular model. Here is the article:Many schematics and wiring diagrams are available online at http://www.gibson.com/relations/schematics. However, we do have an extensive archive of schematics and wiring diagrams at our disposal. Please contact Gibson Customer Service if you cannot locate the one you need online. If it’s available we will be happy to send you a copy. (relations@gibson.com) Good luck. |
Bill Creller
Member From: Saginaw, Michigan, USA
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posted 13 April 2005 10:02 AM
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You are right Mike, it's the Crestline series just as you described.
Andy, I found that Gibson site last night and emailed them , so maybe I'll get a response. Thanks
BILL |
John Tipka
Member From: Reynoldsburg,OH
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posted 15 April 2005 06:53 AM
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Bill,I emailed you the Epiphone EA-35T schematic for your amplifier in PDF format. John |
Bill Creller
Member From: Saginaw, Michigan, USA
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posted 15 April 2005 02:44 PM
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Thanks all who responded, and thank you John for the print. I have it copied OK, so I'll see if I can fix tone circuits.
ALOHA Bill |
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