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Old 28th June 2012, 10:48 AM   #2541
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I am currently building Miha Rauta's FC-100 amplifier.

Click the image to open in full size.

Both channels work as designed, and I fastened them on the bottom plate of the ALU case.

Click the image to open in full size.

Since I need some space for additional components (source selector, attenuation,...):

Shall I install the transformers one behind the other (as shown on the picture above), build some metall cage around them
and install the additional PCBs on the "first floor", or shall I stack the big black transformers one above the other?

Is there any recommendation what to do and what to do not?

Best regards - Rudi_Ratlos
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Old 28th June 2012, 10:56 AM   #2542
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SPEECHLESS......
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Old 28th June 2012, 11:19 AM   #2543
kees52 is online now kees52  Netherlands
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Quote:
Originally Posted by sakis View Post
SPEECHLESS......
yess agree

I have to build soon a case for the hybrid amp, after the pcb,s are ready afcourse, a type where the tubes can be seen on the above the front and or behind glass or plastic window, like this

The NEW Moscode 402Au Tube Hybrid Amplifier

Link as example for window, the other has the tubes up with cooling profile mosfets behind it.
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Last edited by kees52; 28th June 2012 at 11:22 AM.
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Old 28th June 2012, 11:28 AM   #2544
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A masterpiece Rudi, looking forward to your listening impressions...
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Old 28th June 2012, 11:35 AM   #2545
tinitus is offline tinitus  Europe
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Quote:
Originally Posted by kees52 View Post

I have to build soon a case for the hybrid amp.......
is that a 6C19n ?
could I see a schematic of the tube section ?
or anything you know about this tube
PM if you like/prefer
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Old 28th June 2012, 11:49 AM   #2546
Telstar is offline Telstar  Italy
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Quote:
Originally Posted by Rudi_Ratlos View Post
Shall I install the transformers one behind the other (as shown on the picture above), build some metall cage around them
and install the additional PCBs on the "first floor", or shall I stack the big black transformers one above the other?

Is there any recommendation what to do and what to do not?

Best regards - Rudi_Ratlos
How powerful are they? I find the talema/nuvotec potted transformers to be very quiet and decently shielded.
I would mount one above the other. Not sure of the little one.
Perpendicular respect the signal pcb is already the correct way
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Old 28th June 2012, 12:02 PM   #2547
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Telstar,

the Talema transformers are 2 x 25 VAC / 225W each.
The small transformer is 4 x 34 VAC / 50W and supplies the frontend-shunts with power.

Best regards - Rudi_Ratlos
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Old 28th June 2012, 12:26 PM   #2548
kees52 is online now kees52  Netherlands
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Quote:
Originally Posted by tinitus View Post
is that a 6C19n ?
could I see a schematic of the tube section ?
or anything you know about this tube
PM if you like/prefer

here the sound, as a idea, youtube is not so well sounding, also because I did only use a mid speaker with own little closed box and tweeter, but soundstage is big, it was a test to listen to platefollowers only. and yes, it sounds much relaxed, and special it give better bas.

real diy testing, real fun. - YouTube
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Old 28th June 2012, 12:43 PM   #2549
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Quote:
Originally Posted by Rudi_Ratlos View Post
what and what not?
Whichever is easier ?
Personally, i find fully resin encapsulated tranformers less practical than regular toroidals, due to the wires sticking out from the bottom.

Plenty commercial examples of stacked transformers, with/without a metal pan cover (e.g. Threshold monaurals)
If capacitor can height isn't the issue, a double-decker is easier, having an alloy metal plate folded to size is also cheaper than buying a (tall) transformer cover.

(there was a time when me used cheapo aluminum camping cooking pots as transformer covers, only takes a can of black spray paint)
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Last edited by jacco vermeulen; 28th June 2012 at 01:07 PM.
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Old 29th June 2012, 05:40 PM   #2550
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