Hello all. Due to ongoing project with large gu81m (4 of them)
http://www.diyaudio.com/forums/tube...ltage-driver-ab2-operation-gu81m-tubes-7.html
I have to part with two gems. A lucky find from a Ryazan plant warehouse yielded 2 perfect gm100. Apparently these huge triodes are NOS but without boxes. These are the largest and most beautiful tubes on the market
Photo comparison:
datasheet:
Ëàìïà ÃÌ-100
The filaments test fine at 12.6v
I ask 150 euros each. Buyer pays shipping. Any method of payment is accepted as long as it is secure for both parties (paypal, bank transfer).
Can arrange specific transportation methods but was thinking EMS for added safety.
For all info please email me at J22_it@yahoo.it
telephone number can be sent through PM for added guarantee
Cheers
Alessandro
http://www.diyaudio.com/forums/tube...ltage-driver-ab2-operation-gu81m-tubes-7.html
I have to part with two gems. A lucky find from a Ryazan plant warehouse yielded 2 perfect gm100. Apparently these huge triodes are NOS but without boxes. These are the largest and most beautiful tubes on the market
Photo comparison:
An externally hosted image should be here but it was not working when we last tested it.
datasheet:
Ëàìïà ÃÌ-100
The filaments test fine at 12.6v
I ask 150 euros each. Buyer pays shipping. Any method of payment is accepted as long as it is secure for both parties (paypal, bank transfer).
Can arrange specific transportation methods but was thinking EMS for added safety.
For all info please email me at J22_it@yahoo.it
telephone number can be sent through PM for added guarantee
Cheers
Alessandro
Last edited:
yes anode voltage can get pretty high...but lower voltage will work too (allbeit with different behaviour). I know a builder should not say this but these tubes are just beautiful to put in a showcase. I am too deep inside my project to revert to the design stage but even a nice lowe power SET could be built around such a tube.
There is a tried schematic in the gm70 yahoo group forum. The driver i am using for my 2kw amp (search gu81m ab2 thread) should work. As i said i am selling for funds. If i had the possibility i would use the gm100 (financial possibility). Obviously this project is NOT a plug&play style kit. This is diy forum afterall!
Inviato dal mio GT-I5800 con Tapatalk 2
Inviato dal mio GT-I5800 con Tapatalk 2
it's me)Ask lem8r (a diy member) for custom toroidal transformers. I had a 1700w output transformer core made for my amp per channel.
GM100 power triodes
Hi Folks
I have had one GM100 ,but i gave it to the friend of mine ,owner of NAT audio
He needs em,check why :
Magma New - NAT audio - Innovative Audio Manufacture
Hi Folks
I have had one GM100 ,but i gave it to the friend of mine ,owner of NAT audio
He needs em,check why :
Magma New - NAT audio - Innovative Audio Manufacture
Attachments
Looks great. Specs are even better)Hi Folks
I have had one GM100 ,but i gave it to the friend of mine ,owner of NAT audio
He needs em,check why :
Magma New - NAT audio - Innovative Audio Manufacture
nutsfully stabilised DC power to supply filament of output tube
I can provide gm-100 tubes if needed, just write me pm.
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