211 based on iGoliath Amplifier

[jps1964]

swapping from my GM-70 socket thread to a description of my work on a 211 amplifier.

Building today 4 monoblocs, for a friend and for my new/old greencone loudspeakers (ebay 399€/pair).

Some fotos and the link to the original iGoliath amplifier from Peter Gelder (in dutch only!):
iGoliath 211 triode versterker (Peter Gelder) - Audio Creative

 

[jps1964]

Here the fotos (reduced quality)...

Greecones, driver tube and rectifier tube and the sexy 211!

 

[jps1964]

... working on the power supplies and waiting for the copper parts (IT 25841 - 252€/pair and OT 28957 - 450€/pair) from:
Audio Transformers - Automatic Electric Europe - transformatoren

The end price of a stereo pair should not exceed 2000€ (custom sockets, custom toroid, Mundorf and WIMA DC-LINK capacitors, AMTRANS resistors, PCB to reduce cabling)...

 

[deafbykhorns]

What transformer are you using with the CFB winding?
HF extension really suffers without it (I modeled it in spice this week). I really didn't like the way it looked (on paper).

 

[jps1964]

the OT 28957 for CFB.

 

[jps1964]

... right monobloc.

Working on optimisation (and some missing 3D models) or last control before ordering printed circuit board...

 

[jps1964]

...finally, the teflon socket is finalized.
And I prefer definitively the Melomania amplifier design (cheaper OT).

 

[jps1964]

sorry, the PSU...

 

[Alastair E]

Err--What in the world is an 'iGoliath'....? It must be Trendy--Its got an 'i' at the start.....

--just like all that plastic sand rubbish that seems to be permanently attached to peoples hands these days.....

Google search only turns up this thread amongst loads of irrelevant 'Farcecrook' pages.....

 

[jps1964]

... see the link in post #1

 

[jps1964]

... and here the link to the Melomania Amplifier...

melomania VT-4-C/211, von Volker Kluft

 

[Alastair E]

Ah--Right, Cheers!

 

[jps1964]

The design is universal: replace driver PCB, modify the power supplies (high voltage supply for driver up to 600V; for power tube up to 1200V; raw DC supply for Rod coleman´s DHT-Supply); interstage or anode choke, you decide; 805A, 845 or 211?

The iron is from Toroidy...

 

[M Gregg]

English version.

https://translate.google.co.uk/tran...luft-211-Amp/melomania.htm&edit-text=&act=url

Regards
M. Gregg

 

[suwaned]

The design is universal: replace driver PCB, modify the power supplies (high voltage supply for driver up to 600V; for power tube up to 1200V; raw DC supply for Rod coleman´s DHT-Supply); interstage or anode choke, you decide; 805A, 845 or 211?

The iron is from Toroidy...

Hi,
very nice and good jobs 3D model's, very detail.
Goliath amp from Triode Dick, I fanatic with designs from him.

DC supply filament from Rod coleman' DHT very good and quite, I've tried on my 300B power.

I expect you to project 211, thank's and keep to share, because I also want to make 211 too.
but I have not been chosen for the driver.

regards
Ed