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Old 11th February 2009, 06:27 PM   #1
adason is offline adason  United States
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Default se9060

hi amp experts,

I have old technics se9060 amp, which needs power transistor replacements.
I got the schematics from ma_coule, thanks Janko.
Original transistors are 2SD675 and 2SB655. I suppose these are obsolete. Can anyone suggest replacements? Even better, can anyone offer two pairs (I would like to replace both channels) replacement transistors for sale? I will gladly pay premium if they are not fake.

thanks,
ed
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Old 11th February 2009, 08:20 PM   #2
Steve Dunlap is offline Steve Dunlap  United States
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Those transistors were 160V 12A 100W devices. You could replace them with MJ15024/25s. That would be an upgrade and fairly inexpensive.
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Old 11th February 2009, 10:09 PM   #3
adason is offline adason  United States
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Hi Steve,

great, I am going to order those from Digi-Key,

Ed
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Old 27th February 2009, 12:20 AM   #4
adason is offline adason  United States
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Hi Steve,

transistors arrived and were easily replaced. No soldering, just two screws, slide new in and that's it. Works great. Thanks Steve for the transistor replacement suggestion. I readjusted DC points as per schematics thanks to Janko Kolar. Thanks Janko.

I like this amplifier. It has decent sound, smooth, sweet and delicate. Massively built, nice overkill power supply, actually two independent ones.

The only think I hate about this amp is its output connectors. I will have to replace them. They only accept bare wire. Weird.

Anyway, its playing now. Sweet, sweet success!
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Old 23rd October 2009, 11:25 AM   #5
bobodioulasso is offline bobodioulasso  Europe
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Hi Adason.
I just bought on the bay an old se9060. I would be very pleased if you could email me its schematic.
I find this amp better for bass than treebles. What do you think?
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Old 23rd October 2009, 12:27 PM   #6
adason is offline adason  United States
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hi bobodioulasso,

yes, I can email you the schematics, I have it, once I get home...
soundwise, yes, it sounds little laid back, relaxed comparing to other amps, I like its sound, its sweet, never too bright
I use it to power the woofers in biamplified system, its great for that

ed

Last edited by adason; 23rd October 2009 at 12:31 PM.
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Old 23rd October 2009, 02:44 PM   #7
adason is offline adason  United States
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what is your email bobodioulasso?
ed
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Old 23rd October 2009, 03:17 PM   #8
bobodioulasso is offline bobodioulasso  Europe
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I received your schematic.
Thanks a lot.
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Old 23rd October 2009, 07:39 PM   #9
adason is offline adason  United States
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you are welcome
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Old 22nd August 2013, 07:18 AM   #10
adri2000 is offline adri2000  Latvia
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Can anyone can give parameters or alternatives for replacing SVIUPA63H1 transistor in Technics se9060 amp?
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