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JBL SA600 & SA660 integrated 2 ch amps
JBL SA600 & SA660 integrated 2 ch amps
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Old 24th September 2007, 05:17 PM   #1
basenjifan is offline basenjifan  United States
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Default JBL SA600 & SA660 integrated 2 ch amps

Hi;

JBL SA600 & SA660 integrated stereo amps can develop broken solder joints on the transistor sockets in the power amp sections. Resolder these joints 1st thing after the smoke clears and B4 further troubleshooting.

Does anyone know the JEDEC (ie: 2N6029) or transistor mfg's (ie: MJ4502) device #'s and/or the characteristics/parameters these devices were selected for?
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Old 26th September 2007, 02:52 AM   #2
Charles Hansen is offline Charles Hansen
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Marshall Leach has kindly reprinted the original article on this design by the Mr. Bart Locanthi. It includes a full schematic and much other information as well. This is a classic, and clearly the best solid-state amp of its time.

http://users.ece.gatech.edu/~mleach/.../tcir/tcir.pdf
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Old 26th September 2007, 04:09 PM   #3
basenjifan is offline basenjifan  United States
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Talking reprint -- Operational Amplifier Circuit for Hi-Fi

Hi;

Thank you for bringing this to my attention. My mistaken posting to analogue instead of amplifiers wasn't such a big mistake after all.
I had the original artical at one time. It caused my purchase of an SA600. I was sad when EW changed format/hands.

'senjifan
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Old 27th May 2010, 02:19 PM   #4
tiefbassuebertr is offline tiefbassuebertr  Germany
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go to post #85 and #86 about
http://www.diyaudio.com/forums/solid...lifiers-9.html
for more informations
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Old 1st January 2012, 07:11 PM   #5
IsakAlexander is offline IsakAlexander  United Kingdom
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Im at the beginning of restoring an SA-600 to its former glory but having a hard time finding replacements for both the driver and output transistors. Ive seen the tread over in holland but he had all of the originals in place and the one I got here is missing all the originals, even the various small ones.

Any help would be highly appreciated.
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Old 1st January 2012, 07:43 PM   #6
IsakAlexander is offline IsakAlexander  United Kingdom
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MJ4502(pnp) and MJ802(npn)??
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Old 2nd January 2012, 04:52 PM   #7
tiefbassuebertr is offline tiefbassuebertr  Germany
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Quote:
Originally Posted by IsakAlexander View Post
Im at the beginning of restoring an SA-600 to its former glory but having a hard time finding replacements for both the driver and output transistors. Ive seen the tread over in holland but he had all of the originals in place and the one I got here is missing all the originals, even the various small ones.

Any help would be highly appreciated.
mean you this thread?
Totale restauratie van een JBL SA-600 versterker uit 1966

ckeck out this threads:
Udgangs transister til Jbl sa 600 (post#8 - #14)
JBL SA-600 spareparts
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