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Old 5th September 2003, 10:48 AM   #11
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I think to the power issue isn't very important if we talk decibels. A little different gm but lower Rdson will influnece but I don't know how much. The main thing is the bias.

About the dimensions, just check how TO3 plastic looks like.

The newer types you mention is slighty better so you won't get worse sound at least, don't think so

If you are going to use the pcb in the picture, notice that the traces are rather thing. To pairs can deliver 20-30 A so it's possible to burn these traces if you not have good current limiting or fuses.
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Old 5th September 2003, 01:43 PM   #12
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So you say 2SJ162 2SK1058 WILL Burn tracks?

why if the original output didn't burn tracks?
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Old 5th September 2003, 02:12 PM   #13
Electrons are yellow and more is better!
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Quote:
Originally posted by Marvellous
So you say 2SJ162 2SK1058 WILL Burn tracks?

why if the original output didn't burn tracks?
Not necessarily but you have not so much over capacity in the pcb if we talk current. The pcb will work for normal use but hardly for "unnormal".
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Old 5th September 2003, 02:28 PM   #14
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Marv, Try the Farnell distributors in South Africa. Ask for BUZ900 and BUZ905 those are Magntec TO3s, virtually identical to the Hits.

http://www.magnatec-uk.com/mosdata.shtml

The 162 and 1058 would work fine, if you could make 'em fit. The Trace would run them on a lower bias than hifi gear. But find and buy the BUZ thingies.
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Old 5th September 2003, 02:51 PM   #15
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just to make sure Thats BUZ900 & BUZ905
with nothing at the end!?

Thanks Found the BUZ900 & BUZ905
they R Expensive R1492 for 4Pairs!

while the 2SJ162 & 2SK1058 are R400 4Pairs!

now if I use the 2SJ & 2SK will the amp be as reliable
as the when Using the Expensive BUZ?
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Old 20th April 2009, 09:08 PM   #16
Alans is offline Alans  Belgium
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Default Re: Mosfets

Quote:
Originally posted by diyman
RS components still stock the 2SK135 and 2SJ50 although these are not made by Hitachi anymore. Hope this helps.

Yes absolutely, it is Semelab/MagnaTec: 2SK135 and 2SJ50, characteristics are the same!
According to the update of Ray's Crescendo http://members.quicknet.nl/ra.vdsteen/crescendo_en.html there are also replacements: BUZ900 and BUZ905 the same manufacturer, but if the original transistors are made we will have more chance today to find components with modern manufacturing techniques.
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