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#1 2012-06-04 21:55:27

smokeydusky
Member
Registered: 2012-02-08
Posts: 14

Gemini 12/G-12--Some Questions

Gemini 12/G-12 added to the family:
http://i46.tinypic.com/xayvxc.jpgAs far as I can tell, all original.  Monster tone.  Has a bit of the "under someone's bed for 30 years" charm.

Thanks so much to Hangman and all the others who share on this site.

Loud tells me it's a 1969 model.

I would greatly appreciate any help with the following:
1.  Owner's manual to copy?  (Loud is sending a 1969 schematic.)
2.  Volume knob?
3.  Recommendations for cleaning up the vinyl shell?

I realize it's supposed to be a ~22 watt amp, but it sounds more like 40 watts.  Would love to get that 1 o'clock tone at 9 o'clock and would also appreciate suggestions for attenuation that would retain much of the tone.  [I realize driving the tubes hard adds to the wear and tear, but it's not a museum piece smile     ] 

At some point, I'll get around to adding a 3-prong plug.
AFAIK, even the filter caps are original.

Thanks in advance for any further help!

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#2 2012-06-05 03:54:10

hangman
Banned
From: Seattle Washington
Registered: 2006-09-04
Posts: 1848

Re: Gemini 12/G-12--Some Questions

Nice score!   

I'm surprised you are finding it too loud.    I feel like it is perfect.  I mean any quieter and it would be tough to keep up with a drummer.

But if you need an attenuator,  I would say go for the hot plate.   

You don't need the schematic from loud,   It is glued to the top of the chassis.   

Volume knobs are available from fliptops... But I think loud makes them too,  for the svt-vr

- Steve

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#3 2012-06-05 06:47:36

smokeydusky
Member
Registered: 2012-02-08
Posts: 14

Re: Gemini 12/G-12--Some Questions

Thanks so much, Steve!

Any suggestion as to where I might find an owner's manual or how to clean the outside of the cabinet?  (Loud suggested warm soap water.)

Also, are there pre-made cables to connect to and from the Hot Plate, or must I solder the existing speaker wires and speaker terminals to adapters or cable connectors?

Strange that Loud didn't know it had the knobs to sell.  I contact Loud or Flip Top.

Thanks!!

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#4 2012-06-05 18:16:35

hangman
Banned
From: Seattle Washington
Registered: 2006-09-04
Posts: 1848

Re: Gemini 12/G-12--Some Questions

The tolex you can clean with a mild detergent and a soft brush.  Armor all works great too.   
The soft brush helps get the dirt out of the textured tolex. 
Owners manual... No idea,  never seen one.   Are you looking for the manual for a particular reason?   
You'll have to fashion your own cables for the hot plate.  Not too difficult really. 
I can't say for sure that the svt-vr knobs work.   The are the right shape and have the d shaft,  but I cant say for sure that the orientation is right.

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#5 2012-06-06 02:17:09

smokeydusky
Member
Registered: 2012-02-08
Posts: 14

Re: Gemini 12/G-12--Some Questions

OK, thanks for your help!!

Last edited by smokeydusky (2012-06-06 02:17:21)

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#6 2012-06-06 04:58:31

hangman
Banned
From: Seattle Washington
Registered: 2006-09-04
Posts: 1848

Re: Gemini 12/G-12--Some Questions

another thing....

you might look into getting a tube damper for the 7199.
oh.. and an extra 7199.   

the 7199s tend to get microphonic, and can start rattling.   the damper will help there,  since the 7199 is getting harder to find,  not a bad idea to grab an extra one.

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#7 2012-06-07 03:04:04

smokeydusky
Member
Registered: 2012-02-08
Posts: 14

Re: Gemini 12/G-12--Some Questions

Great!  Thanks!

My history suggests that the best way to ensure a tube doesn't blow is to buy a back up  smile

In any case, what source would you recommend for the damper and tube?

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#8 2012-06-07 04:25:10

hangman
Banned
From: Seattle Washington
Registered: 2006-09-04
Posts: 1848

Re: Gemini 12/G-12--Some Questions

I've gotten 7199s from Doug's tubes.
http://www.dougstubes.com/jan-philips-7199.html

tube depot has the silicone dampers,  they also have the jan-philips 7199,  but they are $10 more expensive.

metal tube dampers are available here:
http://www.audiotubes.com/damper.htm

never tried those... but they look interesting.

one thing... DO NOT GET THE SOVTEK 7199!   it is junk.  rattles and hums like mad.   
i have tried multiple sovtek 7199s and they ALL had that problem.

-steve

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#9 2012-06-07 05:28:52

smokeydusky
Member
Registered: 2012-02-08
Posts: 14

Re: Gemini 12/G-12--Some Questions

Thanks, Steve!
Great advice!

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