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Old 22nd May 2013, 09:11 PM   #921
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Quote:
Originally Posted by permaneder View Post
I have built dozens of Le Monstre with capacitance multipliers supplies over the years. It's inevitable, however, to add considerable buffer capacities to their regulated outputs. They have been always much better than passive supplies with or without batteries.
Glad to hear others have had success using a multiplier.
I'm certainly willing to add more buffer capacitance to the output of the supply if I feel it needs it after listening.
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Old 22nd May 2013, 10:13 PM   #922
Pano is offline Pano  United States
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Also don't miss the forest for the trees. Part of Le Monstre's concept is to test just what difference, if any, a massive passive power supply makes to the sound. Le Monstre takes that very far.

If you like the sound better with a regulated supply of cap multiplier, why not?
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Old 22nd May 2013, 10:26 PM   #923
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from what i remember, the goal with Le Monstre was to design a solid state amp that would get close to a single ended 2A3 tube amp

at the time 2A3 was hot, and almost a mystery tube

clearly 'early days' for the revival of tube amps...so to speak

I guess the 8watt Le Monstre would look different if designed today
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Old 23rd May 2013, 07:47 AM   #924
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I'm assuming it is for the purpose of compensating for the inductance in the lead wires connecting the boards to the supply

for the battery version?

are they needed on a normal linear supply and what would be the effect of lowering the caps value , say 470uf to 220 uf

Sheafer
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Old 23rd May 2013, 09:01 PM   #925
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Well, the value shown on the original boards is actually only 47uF. And that's the value I'm using.
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Old 23rd May 2013, 09:13 PM   #926
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Just remenber to NOT run the return current of the decoupling caps in the same wire as the signal ground.
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Old 24th May 2013, 08:42 AM   #927
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Hmm
mine are 470uf
any way i have a very good power supply that also incorporates rf filtering on the rails so ive just removed the caps all together
its running fine so far ,no problems

Sheafer
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Old 24th May 2013, 06:38 PM   #928
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Default improved Hiraga based on le monster

Hi all,
As promised I like to inform you with my project the improved Hiraga based on le monster
I am using MJ802/MJ4502 out put transistors
Idle current is 1.5 amp dc, Vdc 30 v each rail
After long run in idle mode and readjusting the Vout offset,
Connected to my system, Acoustat 3 spk and Odyssey solid state pre amp
YBA is my cd source
Well how it sounds like? Very well and a lot of details comparable to my pwr amp
It is built like a proto type with a huge pwr supply and big heat sinks
Now I have finished building the super Hiraga and working on increasing out put pwr
So wish me luck!
I attached some pics
Best regards
Williams

IMG_2714.jpg
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Old 30th May 2013, 02:21 PM   #929
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A quick question about the alpeh M 10 watt boards. Do they have to be driven balanced?

Pass ALEPH-M DIY Class-A amplifier PCB
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Old 27th June 2013, 07:30 PM   #930
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Here is mine !

2SK170/2SJ74 (8mA)
2SC2240/2SA970
2SC2705/2SA1145
NJW0281G /NJW0302G

And I changed the front end gain resistors to 510ohm for a bias of about 0.85A
Attached Images
File Type: jpg LeMonstre.jpg (163.4 KB, 625 views)
File Type: png LeMonstre_1W_8Ohm_Right.png (32.0 KB, 570 views)

Last edited by Tazzz; 27th June 2013 at 07:53 PM.
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