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Old 16th September 2011, 10:50 PM   #31
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Location: Montijo, Portugal
Quote:
Originally Posted by barrows View Post
Tiff: I am interested in balanced to balanced input buffers for a pair of ASP 500 mono blocks I have. Would love to get the input impedance up to 50 k per phase or more. I would be in on a group buy for a small board which includes wiring for power and signal to and from the ICE module.
Great!

Anybody else of for a group buy?

I would by at least 4 inputs buffers + 2 for "barrows" makes 6.

Come on guys...
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Old 17th September 2011, 12:17 PM   #32
DDriver is offline DDriver  Ukraine
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Dear friends! Does anybody have ICEpower sch ? I have one half, but I don’t interesting sch. My great interest – structural sch. Does anybody have ?
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Old 20th September 2011, 05:47 PM   #33
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In order to get more atention from other users regarding the input buffer, I've started a group buy.

Please take a look ate the following thread:

Potential Group by for Balanced Input Buffers with Ingenius 1200 IC from THAT Corp.
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Old 13th October 2011, 02:10 PM   #34
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Hi All,

I just ordered some JST PH-6 connectors to fiddle around with the integrated stand-by circuit of the ASP1000.

I have made a test circuit wired point to point (according to the famous figure 16) that is working, but I am waiting for my connectors as I dont want to solder directly on the pins of the amp module.

Thinking about it I was wondering if the auxilary 12.8V supply of the amp module was "on" whilst in stand-by mode or if I would need a seperate 12V supply to trigger the BC54x in the well known fig. 16 schematic ...

I'd really appreciate to get in touch with DIYers using the 1000ASP (and other ICEpower) modules...

Cheers,

Max

Last edited by coolnose; 13th October 2011 at 02:27 PM.
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Old 11th December 2011, 09:12 PM   #35
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Location: Columbus, Mississippi
Quote:
Originally Posted by Tiff_Needle View Post
Does Anyone have the schematics of this power supply module that Bel Canto have fitted on their revision of the Ref-1000 (MKII)

Click the image to open in full size.

Looks like a small bank of capacitor a a few diodes....

Should this be some thing like the PFC (Power Factor Correction) PC1 from Jeff Rowland??

To me the PFC (And I'm not an Expert) sould bean AC-DC converter feeding the ASP1000 SMPS with DC (384VDC) if that correct?

Anybody can comment?
From the comments in the various reviews, it looks like this circuit is diode voltage-doubler directly rectifying the 120/240 VAC to 305-320 VDC... See comments in these reviews:

bel canto ref 500M

bel canto ref 1000

SoundStage! Equipment Review - Bel Canto Design e.One REF500M Mono Amplifiers (4/2010)

Music in the Round #35 | Stereophile.com

Anyone have more info on the circuit yet? Can anyone get their hands on one to check out?

I've got a couple pair of the EVS 1000ASP-based and think that'd make a nice, not-to-hard to implement upgrade (as long as one was careful while working on it!).

Greg in Mississippi

P.S. BTW, at 300-320VDC, those two added caps don't have to be very large in value to provide the '400+ joules' of added energy storage! Something just under 100uf total should do it.
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Last edited by Greg Stewart; 11th December 2011 at 09:22 PM.
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Old 13th December 2011, 08:56 AM   #36
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this is my 7 channels amp input stage with icepower modules
more photos will come
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Old 13th December 2011, 09:58 AM   #37
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Quote:
Originally Posted by arthur View Post
this is my 7 channels amp input stage with icepower modules
more photos will come
Wow...

Nice!

Where did you get those input buffers?

I shure would like to get my hand on a pair of those.
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Old 2nd January 2012, 03:56 PM   #38
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my slow progess
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Old 2nd January 2012, 04:03 PM   #39
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one more
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Old 2nd January 2012, 04:07 PM   #40
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side view
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