Looking for info on an extremely rare tube amp
- Ibanez666
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Looking for info on an extremely rare tube amp
Hummel Electronics `The Studio Guitar`English front text. German parts, GE 7355 power tubes and 3 12ax7 and a ECC808
- Ex Lion Tamer
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Re: Looking for info on an extremely rare tube amp
Ooooh, I totally love those knobs!
- Ibanez666
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- StevenO
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Re: Looking for info on an extremely rare tube amp
There's a joke here...Ex Lion Tamer wrote:Ooooh, I totally love those knobs!
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Re: Looking for info on an extremely rare tube amp
Well it is sitting on a koch..
No idea but I did have a Klein & Hummel EQ if thats the same company.
No idea but I did have a Klein & Hummel EQ if thats the same company.
- Ex Lion Tamer
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Re: Looking for info on an extremely rare tube amp
Honi soit qui mal y pense.StevenO wrote:There's a joke here...Ex Lion Tamer wrote:Ooooh, I totally love those knobs!
- sookwinder
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Re: Looking for info on an extremely rare tube amp
this is a dumb question....
are those yellowy caps what people call "mustard caps"
reason I ask is that i have discovered my dad's workshop some caps that look like those and I am trying to work out what they are...
are those yellowy caps what people call "mustard caps"
reason I ask is that i have discovered my dad's workshop some caps that look like those and I am trying to work out what they are...
relaxing alternative to doing actual work ...
- timbo_93631
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Re: Looking for info on an extremely rare tube amp
Yep, Philips mustard capssookwinder wrote: ...are those yellowy caps what people call "mustard caps"...
- øøøøøøø
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Re: Looking for info on an extremely rare tube amp
Well that's a first.
U-I core transformers on a guitar amp.
Oxidized laminations with the corners cut off, to me that's reminiscent of East German or maybe Czechoslovakian or Yugoslavian or Polish origin.
U-I transformers are more often seen in microphones, etc. It's a cool design... there are a lot of advantages (the biggest disadvantage being time/labor cost... dual bobbins!).
I'm used to seeing that type of transformer in microphones, etc., but never in a guitar amp.
Wild.
U-I core transformers on a guitar amp.
Oxidized laminations with the corners cut off, to me that's reminiscent of East German or maybe Czechoslovakian or Yugoslavian or Polish origin.
U-I transformers are more often seen in microphones, etc. It's a cool design... there are a lot of advantages (the biggest disadvantage being time/labor cost... dual bobbins!).
I'm used to seeing that type of transformer in microphones, etc., but never in a guitar amp.
Wild.
- Ibanez666
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Re: Looking for info on an extremely rare tube amp
So, what are the advantages then?
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Re: Looking for info on an extremely rare tube amp
less metal used in the core, for one thing. This is probably a big part of why you often see them used in Eastern Europe during the communist era... labor was probably easier to come by than materials/alloys used in transformer laminations. It's also why they would cut the corners off the laminations... an extra labor step, but saved material.Ibanez666 wrote:So, what are the advantages then?
But in audio terms, they have higher efficiency, lower capacitive coupling, and they can also be wired as humbucking, unlike an E/I core transformer!
- Ibanez666
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Re: Looking for info on an extremely rare tube amp
øøøøøøø wrote:less metal used in the core, for one thing. This is probably a big part of why you often see them used in Eastern Europe during the communist era... labor was probably easier to come by than materials/alloys used in transformer laminations. It's also why they would cut the corners off the laminations... an extra labor step, but saved material.Ibanez666 wrote:So, what are the advantages then?
But in audio terms, they have higher efficiency, lower capacitive coupling, and they can also be wired as humbucking, unlike an E/I core transformer!
Ok, thanks for the Info! One of the transformers says "Bayern" I believe
- Ibanez666
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Re: Looking for info on an extremely rare tube amp
The tremolo unfortunately doesnt work. But the sound is warm and a bit Fenderish. No reverb either. I will try it with some distortion and drive pedals soon
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Re: Looking for info on an extremely rare tube amp
tremolo is an optical design-- the optoisolator "roach" is clearly visible in your pics, and is of the same type used in black/silver Fender amps.
It's about a $10 fix, four solder joints.
It's about a $10 fix, four solder joints.
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Re: Looking for info on an extremely rare tube amp
the almost home-made look of it also hints at eastern european heritage, perhaps.