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Old 19th March 2009, 11:21 PM   #271
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read this file in Malz++Kassner CAD6.

Kees
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Old 21st March 2009, 03:38 PM   #272
Stefano is offline Stefano  Italy
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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!
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Old 22nd March 2009, 07:26 AM   #273
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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
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Old 22nd March 2009, 07:31 AM   #274
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ericfe1975,
this could be something for you, no feedback (not quite true), giving a more natural sound.
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Old 22nd March 2009, 08:22 AM   #275
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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...
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Old 22nd March 2009, 02:48 PM   #276
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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
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Old 23rd March 2009, 02:24 AM   #277
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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.
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Old 23rd March 2009, 02:37 AM   #278
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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?
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Old 23rd March 2009, 03:28 AM   #279
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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
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Old 23rd March 2009, 03:50 AM   #280
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Dan,
one amp was sold just recently. Where is the money?
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