Hiraga "le monstre" - Page 28

audiomanics · 19th March 2009, 10:21 PM

read this file in Malz++Kassner CAD6.

Kees

Stefano · 21st March 2009, 02:38 PM

Quote:

Originally posted by Nelson Pass

In my experience the opposite is true. I have never had a FET amplifier
give me trouble with RF.

Le Monstre is a classic design, and there are several contemporary
pieces which are homages to it whether the designer knows it
or not.

I do think, however, that device technology has improved enough in
the last 26 years that it can be made better.

Nelson I would like very much if you give us your personal interpretation of Le Monstre!

Lumba Ogir · 22nd March 2009, 06:26 AM

Dan,
regarding transistor substitution, as for the J-FETS, only Toshiba has provided matched complementary pairs (it`s hard to do technically). Instead of 2SC1775, 2SC2362 or 2SC2240 would be suitable.
Some choices for the drivers:
From Sanyo
2SA3600/2SA1406
2SC2911/2SA1209
From Toshiba
2SC3423/2SA1360
From Hitachi
2SD1609/2SB1109

Lumba Ogir · 22nd March 2009, 06:31 AM

ericfe1975,
this could be something for you, no feedback (not quite true), giving a more natural sound.

danieljw · 22nd March 2009, 07:22 AM

Quote:

Originally posted by Lumba Ogir
Dan,
regarding transistor substitution, as for the J-FETS, only Toshiba has provided matched complementary pairs (it`s hard to do technically). Instead of 2SC1775, 2SC2362 or 2SC2240 would be suitable.
Some choices for the drivers:
From Sanyo
2SA3600/2SA1406
2SC2911/2SA1209
From Toshiba
2SC3423/2SA1360
From Hitachi
2SD1609/2SB1109

thanks lumba i will look these up and see what they are like...

danieljw · 22nd March 2009, 01:48 PM

i have been doing some searchng for components to rival or preferably better the original Monstre output stage.... not alot of luck.... any ideas any one ?

so far i have ocme up with - 2SC5198/2SA1941 100W, Cob ~170pF, Ic 8A.... Ft 30MHz..

http://www.semicon.toshiba.co.jp/doc...eet_061110.pdf

or

so far i have ocme up with - 2SC5197/2SA1940 80W, Cob ~120/260pF, Ic 8A.... Ft 30MHz..

http://www.toshiba.com/taec/componen...c//66/7667.pdf

-Dan

Lumba Ogir · 23rd March 2009, 01:24 AM

Dan,
2SC5197/2SA1940 gonna be nice. Make sure they are genuine.
Since you have got a lot of money now, you could take a look at 2SC2837/2SA1186 as well.

Lumba Ogir · 23rd March 2009, 01:37 AM

Stefano,
why are you bothering Mr. Pass, he won`t have a go at other people`s stuff.
What would you like to get interpreted?

danieljw · 23rd March 2009, 02:28 AM

Quote:

Originally posted by Lumba Ogir
Dan,
2SC5197/2SA1940 gonna be nice. Make sure they are genuine.
Since you have got a lot of money now, you could take a look at 2SC2837/2SA1186 as well.

they look really good !!!!! i may choose them... nice low Cob......Cheers for the part info,

I wish I had alot of money

-Dan

Lumba Ogir · 23rd March 2009, 02:50 AM

Dan,
one amp was sold just recently. Where is the money?

22nd March 2009, 01:48 PM	#276
danieljw diyAudio Member Join Date: Jan 2005 Location: Adelaide	i have been doing some searchng for components to rival or preferably better the original Monstre output stage.... not alot of luck.... any ideas any one ? so far i have ocme up with - 2SC5198/2SA1941 100W, Cob ~170pF, Ic 8A.... Ft 30MHz.. http://www.semicon.toshiba.co.jp/doc...eet_061110.pdf or so far i have ocme up with - 2SC5197/2SA1940 80W, Cob ~120/260pF, Ic 8A.... Ft 30MHz.. http://www.toshiba.com/taec/componen...c//66/7667.pdf -Dan __________________ Hx350 Monoblocks Jean Hiraga Le Class A

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22nd March 2009, 06:26 AM	#273
Lumba Ogir Banned Join Date: Apr 2005 Location: Stockholm	Dan, regarding transistor substitution, as for the J-FETS, only Toshiba has provided matched complementary pairs (it`s hard to do technically). Instead of 2SC1775, 2SC2362 or 2SC2240 would be suitable. Some choices for the drivers: From Sanyo 2SA3600/2SA1406 2SC2911/2SA1209 From Toshiba 2SC3423/2SA1360 From Hitachi 2SD1609/2SB1109

23rd March 2009, 01:24 AM	#277
Lumba Ogir Banned Join Date: Apr 2005 Location: Stockholm	Dan, 2SC5197/2SA1940 gonna be nice. Make sure they are genuine. Since you have got a lot of money now, you could take a look at 2SC2837/2SA1186 as well.

23rd March 2009, 01:37 AM	#278
Lumba Ogir Banned Join Date: Apr 2005 Location: Stockholm	Stefano, why are you bothering Mr. Pass, he won`t have a go at other people`s stuff. What would you like to get interpreted?

23rd March 2009, 02:50 AM	#280
Lumba Ogir Banned Join Date: Apr 2005 Location: Stockholm	Dan, one amp was sold just recently. Where is the money?