Hi srh, there are four transistors, two TO-92s and two TO-220s
The TO-220s mounted on the heatsinks are BD262 and BD263,
while the TO-92s are BC317B and BC320B. Pics are attached.
Thanks for the offer.
The TO-220s mounted on the heatsinks are BD262 and BD263,
while the TO-92s are BC317B and BC320B. Pics are attached.
Thanks for the offer.
Attachments
50watts?
Yeah! I also wondered about that. Probably explains the unusual heat sink design required to cope with the heat.
Gosh, they're pushing those little guys hard to get 50W [emoji33]
Yeah! I also wondered about that. Probably explains the unusual heat sink design required to cope with the heat.
Alron schematic
Thanks for that - the effort is appreciated.
Thanks again to all the interest, views, suggestions and responses.
Take care.
That will be 50W peak for one millisecond.
Nuryev, give me a couple of days to redraw the schematic to make it legible and I will post it up.
Steve.
Thanks for that - the effort is appreciated.
Thanks again to all the interest, views, suggestions and responses.
Take care.
50watts?
Yeah! I also wondered about that. Probably explains the unusual heat sink design required to cope with the heat.
Gosh, they're pushing those little guys hard to get 50W [emoji33]
Yeah! I also wondered about that. Probably explains the unusual heat sink design required to cope with the heat.
Everything in NZ audio manufacturing in the 1970s was about extracting a quart out of a pint pot. I should know as I worked in the design dept of Consolidated Electronic Industries (Bell) in Dominion rd. If a cent could be shaved off the build cost of a product, it was. Designed by engineers, redesigned by accountants. Most NZ transistor products were awful, though some of the earlier valve stuff (Jansen guitar amps spring to mind) was rather good and retains value today.Gosh, they're pushing those little guys hard to get 50W [emoji33]
M
schematic
Hi srh,
Thank so much for the amazing effort!
I am impressed with the professional presentation and detail...
Do you have any ideas to improve this amp without compromising its authenticity or its character?
I haven't played through it long enough to know the strengths and weaknesses - but while i have it apart and a box full of caps, resistors, inductors and potentiometers.....your schematic is giving me ideas
Thank you again for the time and effort invested in supporting me with this project.
Hi srh,
Thank so much for the amazing effort!
I am impressed with the professional presentation and detail...
Do you have any ideas to improve this amp without compromising its authenticity or its character?
I haven't played through it long enough to know the strengths and weaknesses - but while i have it apart and a box full of caps, resistors, inductors and potentiometers.....your schematic is giving me ideas
Thank you again for the time and effort invested in supporting me with this project.
Good luck ArcticBreaze. Someone will have what you are looking for!
Try asking over in Aussie Guitar Gear Heads : In The Shed
...this has 2 kt88's for power valves not 4 el34's
What's the difference??
(I know the difference, but very often 6550/KT88 is considered a more-rugged upgrade to EL34. Ampeg VT40 was marked for both.)
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