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Old 3rd January 2012, 04:19 PM   #41
DDriver is offline DDriver  Ukraine
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arthur, why do you use ampty and so “small” case with this "big" amplifier?
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Old 3rd January 2012, 10:25 PM   #42
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The external size of this small case is 18W x 7H x 15.5D
I need digest my asp modules stocks . Since i can not find bigger metal housing for av power amp, I only accept to use this

Last edited by arthur; 3rd January 2012 at 10:36 PM.
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Old 3rd January 2012, 10:49 PM   #43
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Default YES....

Quote:
Originally Posted by Tiff_Needle View Post
Wow...

Nice!

Where did you get those input buffers?

I shure would like to get my hand on a pair of those.
I would also like to know how I could get my hands on a pair of input buffers like these.
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Old 4th January 2012, 02:14 AM   #44
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Friends interested please check again #16 I attached
R1 R2 C1 are ground breaker,
R5 is the loading resistor after the output of 1545a
R4 and C3 are the loading for the optimal square wave response....
dc filter are 10 ohm and 33 uf
other component are for trigger standby of the asp modules
No more secret

Last edited by arthur; 4th January 2012 at 02:19 AM.
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Old 6th January 2012, 12:02 AM   #45
jalejos is offline jalejos  Spain
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Quote:
Originally Posted by Greg Stewart View Post
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.
According to these articles, if you connect the output of a PFC to AC input of ASP1000, would it work?
The PFC output 385VDC, does not affect the input circuit (oscillator) of ASP1000?
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Old 6th January 2012, 01:42 AM   #46
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thats what jrdg use
it works , but almost to the working limit.
since the capacitor rating is only 400v
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Old 27th January 2012, 04:43 PM   #47
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my small AV amp progress:
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Old 14th February 2012, 11:07 PM   #48
jalejos is offline jalejos  Spain
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Arthur, from where are these input buffers?
Have problems with hiss or noise on the speakers?
Have you put ferrites on the speaker cables?
I have two ASP1000 modules and generate a little hiss/noise in the speakers and no way to remove them.
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Old 15th February 2012, 02:53 AM   #49
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hi Jale,
1) please check post #44, I clone from M501
2) no
3) no
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Old 15th February 2012, 06:44 AM   #50
lovro is offline lovro  Croatia
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hi, would you be so kind to post the schematic of the input buffer ?
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