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Gibson GA-95RVT
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Travst



Joined: 15 Jul 2008
Posts: 9535
Location: Birmingham, AL

PostPosted: Wed Jul 21, 2010 7:34 pm    Post subject: Reply with quote

I thought I'd post some pics, since you don't see these every day. The amp is a bit scratchy, but has great cleans and lush reverb. However, it isn't putting out 95 watts by a long shot. Journey with me:

Overall, in good condition, but there's a back panel missing and the handle is torn up but functional.


Stock or not? Weird vents.


Odd knobs, doubt they're stock, and one is missing.


An eclectic mix of speakers... a Peavey Sheffield and a "Screamer". I once dated a screamer...


Looks good up here.


Odd mix of power tubes... note the broken tube 3rd from left. Houston, I think we found our problem.


Original Astron caps. They gotta go.


Good old hand-wiring. One new IC cap.




Lots to do here, cap job and new power tubes, plus changing out the two-prong cord.

Specs:
GA-95RVT Apollo (White Panel)

2x12" Guitar Combo
Speakers: 2x12" (cheap Utahs or Eminence?)
Inputs: 2+2
Channels: 2
Volume Controls: 2
Tone Controls on Each Channel: Bass, middle, treble
Jazz Switch: Yes
Presence Switch: 2
Tremolo: Yes
Reverb: Yes
Tubes: 10 (2x6EU7, 2x12AU7, 12AX7, 4x6L6, 0A2 (correspond to Epiphone EA-300RVT Embassy))
Diodes: 3
Extension Speaker Jack: Yes
Monitor Jack: No
Watts Output: 95
Shipping Totals: 1965: 98, 1966: 403, 1967: 247

A shot of the Epiphone version:


Vince found this pic:


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John
I need more practice, not more gear.


Last edited by Travst on Thu Jul 22, 2010 12:53 pm; edited 2 times in total
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rhardman



Joined: 11 Sep 2008
Posts: 4422
Location: Chicago, not ready for reform, yet

PostPosted: Wed Jul 21, 2010 7:49 pm    Post subject: Reply with quote

It is still a major SCORE!!!
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Travst



Joined: 15 Jul 2008
Posts: 9535
Location: Birmingham, AL

PostPosted: Wed Jul 21, 2010 7:51 pm    Post subject: Reply with quote

rhardman wrote:
It is still a major SCORE!!!


I think so. It sounds great and won't take that much to fix up. The most expensive part of the fix will be speakers.
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John
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rhardman



Joined: 11 Sep 2008
Posts: 4422
Location: Chicago, not ready for reform, yet

PostPosted: Wed Jul 21, 2010 7:57 pm    Post subject: Reply with quote

Hey John--

check these out

http://cgi.ebay.com/CTS-Square-Magnet-Woofers-Speakers-Pair-12-Inch-1969-/230501690026?cmd=ViewItem&pt=Vintage_Electronics_R2&hash=item35aaf8aaaa
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rhardman



Joined: 11 Sep 2008
Posts: 4422
Location: Chicago, not ready for reform, yet

PostPosted: Wed Jul 21, 2010 8:02 pm    Post subject: Reply with quote

Or these... sure look like Rola to me


http://cgi.ebay.com/Ampex-12-inch-speakers-/280537562544?cmd=ViewItem&pt=Vintage_Electronics_R2&hash=item4151577db0
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Travst



Joined: 15 Jul 2008
Posts: 9535
Location: Birmingham, AL

PostPosted: Wed Jul 21, 2010 8:16 pm    Post subject: Reply with quote

Rawl, my only concern is the power handling capabilities of replacement speakers. I'll research and see if I can find anything. I like those CTS.
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pattycakes77



Joined: 17 Jan 2008
Posts: 2093
Location: Cedar Rapids, Iowa

PostPosted: Wed Jul 21, 2010 8:24 pm    Post subject: Reply with quote

What do the jazz and presence switches do? Kind of like a "bright" switch or something? Looks pretty neat to me. I love those old coke bottle looking tubes.
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Travst



Joined: 15 Jul 2008
Posts: 9535
Location: Birmingham, AL

PostPosted: Wed Jul 21, 2010 8:37 pm    Post subject: Reply with quote

pattycakes77 wrote:
What do the jazz and presence switches do? Kind of like a "bright" switch or something? Looks pretty neat to me. I love those old coke bottle looking tubes.


The jazz setting seems to be a clean bright setting. However, it was difficult to determine due to the broken tube, etc. Presence affects the upper frequencies and gives them more range.
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Vince



Joined: 10 May 2007
Posts: 11429
Location: Decatur IL

PostPosted: Wed Jul 21, 2010 9:03 pm    Post subject: Reply with quote

Replace the tubes and see how she lights up! Cool

Man that thing is clean... the owner was not worried about anything soundwise though was he? Laughing
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rhardman



Joined: 11 Sep 2008
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Location: Chicago, not ready for reform, yet

PostPosted: Thu Jul 22, 2010 6:58 pm    Post subject: Reply with quote

I used to use CTS 15s with a pair of D130s in my PA rig in the early 70s.

The CTS were comparable sounding to the JBLs, only less efficient. Used to run 60 watts/ side ( tube Altec) or 150/ side (Crown DC 300) The Crown used to blow fuses...never had a problem with the CTS. Sure wish I had kept that Altec.
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Structo



Joined: 21 Nov 2004
Posts: 26415
Location: Salem, OR

PostPosted: Fri Jul 23, 2010 10:25 am    Post subject: Reply with quote

Nice!

In the picture of the circuit board there appears to be a hole cover laying on the right side of the amp. Do you see that?

Looks like they used good parts although that circuit board is very crowded.
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Travst



Joined: 15 Jul 2008
Posts: 9535
Location: Birmingham, AL

PostPosted: Fri Jul 23, 2010 10:44 am    Post subject: Reply with quote

Structo wrote:
Nice!

In the picture of the circuit board there appears to be a hole cover laying on the right side of the amp. Do you see that?

Looks like they used good parts although that circuit board is very crowded.


Tom, I'll check and see what that hole is, as I don't remember. I do remember that the reverb connections and DIN for the footswitch are on the far right of the chassis. It looks like a tube socket in the pic.

I picked up some tubes today, so I'll fire her up tonight.

And Rawl... I was able to determine that the original speakers were gold-label Jensens... just saw a pair on the Bay for $300. Rolling Eyes I put in a bid on those Ampex you recommended.
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Travst



Joined: 15 Jul 2008
Posts: 9535
Location: Birmingham, AL

PostPosted: Fri Jul 23, 2010 8:18 pm    Post subject: Reply with quote

Tom, that hole is a vent. There are a few screened vents on top of the chassis.

I mounted the new tubes cleaned the pots and contacts, etc. Fired her up, and nothing's changed. Just a low clean sound that thins out but doesn't increase in volume when the volume knob is turned up. After defending my thesis today, I think I've done enough for the day and will delve into this some more tomorrow. Obviously, there's something more than just tubes going wrong here. It does appear that one of the 6EU7 tubes may not be working, as there is no glow from it. Unfortunately, I didn't have a spare.
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solemn13



Joined: 26 Jun 2008
Posts: 3807
Location: On a lost bound train runnin on Rogaine out of control

PostPosted: Fri Jul 23, 2010 9:49 pm    Post subject: Reply with quote

Travst wrote:
Tom, that hole is a vent. There are a few screened vents on top of the chassis.

I mounted the new tubes cleaned the pots and contacts, etc. Fired her up, and nothing's changed. Just a low clean sound that thins out but doesn't increase in volume when the volume knob is turned up. After defending my thesis today, I think I've done enough for the day and will delve into this some more tomorrow. Obviously, there's something more than just tubes going wrong here. It does appear that one of the 6EU7 tubes may not be working, as there is no glow from it. Unfortunately, I didn't have a spare.



I can dig into my box tomorrow and see if I have one if you'd be interested. I bought 2 cases and only came up with a few tubes that could be useful for anything we use but I forgot to look for 6eu7's.
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Travst



Joined: 15 Jul 2008
Posts: 9535
Location: Birmingham, AL

PostPosted: Sat Jul 24, 2010 7:10 am    Post subject: Reply with quote

I'd love to pick up a couple if you have them. This morning, I'm going to check my tube tester manual. I expect that I'll be able to test these.
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