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Old 10th September 2012, 06:22 PM   #1361
Dagwood is offline Dagwood  New Zealand
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Hey Ben

Looking good, you will have plenty of time to complete your board as Edcor tend to take a while on the transformers.....

Where are you planning to get your socket from?? I got mine from these guys Pacific T.V. - Vacuum Tube Sockets hassle free

What sort of case are you planning?

Cheers
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Old 11th September 2012, 03:41 PM   #1362
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Quote:
Originally Posted by Dagwood View Post
Hey Ben

Looking good, you will have plenty of time to complete your board as Edcor tend to take a while on the transformers.....

Where are you planning to get your socket from?? I got mine from these guys Pacific T.V. - Vacuum Tube Sockets hassle free

What sort of case are you planning?

Cheers
I also have a Millett MOSFET-MAX to complete as well, so I'll be turning towards that little guy soon. Not sure where I'll get the sockets, there are a number of sources. Antique Electronics Supply is in Tempe, AZ and I'm just next door in Mesa, so I might stop by there and check them out.

I am planning a custom case. I've got some RTiA5's in Cherry from Polk Audio, and I'm thinking of pairing this amp with some RTiA1 or A3's. That being the case, I'd try and mimic some of the design elements, the curved cherry wood finish.
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Old 5th October 2012, 03:45 PM   #1363
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Well, the MOSFET-MAX is almost complete, just waiting for a couple hardware pieces to complete the case.

However, my Edcor transformers have arrive and they are beautiful. They still smelled of the lacquer paint. So, I can switch back into my "Engineer's Amp" mode. I guess I need to design the case to get started with some of the remaining bits and pieces.
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Old 7th October 2012, 08:23 AM   #1364
Dagwood is offline Dagwood  New Zealand
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So many projects...so little time! The story of my life!

Keep us posted ( with pics as well )
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Old 25th October 2012, 03:49 PM   #1365
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Got my Edcor transformers. They are beautiful.

I have also finished my MOSFET-MAX with good results.
Click the image to open in full size.

Now, I'm back in research mode. Looking for a suitable preamp for my engineer's amp and sketching up some design ideas for the case.
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Old 25th October 2012, 04:25 PM   #1366
tomlang is offline tomlang  United States
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I'm in the final throes of building a remote controlled line tube preamp utilizing the 6EJ7 for tone control duty as shown in the most recent 4th edition of Morgan Jones. I can share details if you are interested but you may cringe at the thought of tone controls...
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Old 25th October 2012, 11:17 PM   #1367
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I have also finished my MOSFET-MAX with good results.
Very cute! What cans are you driving with that?

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Originally Posted by bwshockley View Post
Now, I'm back in research mode. Looking for a suitable preamp for my engineer's amp and sketching up some design ideas for the case.
Same here.

jeff
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Old 26th October 2012, 08:16 PM   #1368
rudrud is offline rudrud  Finland
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Default Mains transformator

Thanks for the forum! Many useful. Question.
Can I use EDCOR XPWR 205 (300-50-0-50-300) 200mA & (3,15-3,15) 6A without changing the schema?
Thank you.
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Old 26th October 2012, 08:58 PM   #1369
rudrud is offline rudrud  Finland
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Default Mains transformer

Question II
Can I use Hammond 370 HX (275-50-0-275) 230mA (3,15-0-3,15) 6A
372 HX (300-50-0-300) 230mA (3,15-0-3,15) 6A
Which is better?

73!
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Old 29th October 2012, 04:48 AM   #1370
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A few years ago I discovered the Conn organ amp that used 7027 output tubes. The power transformer is the ultimate in simplicity: 2 black wires 2 red wires and 2 green wires; plus a white wire for the ground shield. The filament winding is easily capable of handling 4x 6550s plus another 1.5 amps for the front end; the power winding is of course a voltage doubler type; quite comfortable running 1200 uF filter caps, and providing about 460 V to the plates. The output iron features 4-8-16 ohm output taps and gives the Citation 5 a SERIOUS run for its money. Vintage Conn Organ 2 Channel Tube Amp Amplifier from Deluxe Theater Organ | eBay (got it for $95) You have to get a second one to get two outputs; this one completes my set so happy bidding!
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