Got the idea mate Here you go:
Notice the short distance between power tranny, choke and OT.
No hum, no noise at 100dB loudspeaker.
Those R-core can't compete with amorphous core
but are a decent bang for the buck. Mid and highs are nice.
Rod's filament supply is in the frontpanel, at the copper strip.
Coupling done with 1uF Audicap and two 0,1uF Cardas.
The TCC oil is a little inductive, fine for that first position.
Wiring between HT rectifier and first cap is shortest possible.
LV supply has been split in noisy front (near tranny)
and 'clean' end at the tube sockets.
Finishing the plinth is for today, as is tidying up wires.
An externally hosted image should be here but it was not working when we last tested it.
Notice the short distance between power tranny, choke and OT.
No hum, no noise at 100dB loudspeaker.
Those R-core can't compete with amorphous core
but are a decent bang for the buck. Mid and highs are nice.
Rod's filament supply is in the frontpanel, at the copper strip.
Coupling done with 1uF Audicap and two 0,1uF Cardas.
The TCC oil is a little inductive, fine for that first position.
Wiring between HT rectifier and first cap is shortest possible.
LV supply has been split in noisy front (near tranny)
and 'clean' end at the tube sockets.
Finishing the plinth is for today, as is tidying up wires.
example
Very tasty ,a over head shot please
example
Does look good. Better images please.
Here is my latest project.
It is my take on the new Transcendent "Son of Beast" output transformerless tube amplifier.
The design was built from the circuit that appears in Bruce Rozenblit's latest book "Tubes & Circuits"
It uses the earlier 40V heater PL509/519 top cap sweep tube rather than the newer production octal based JJ EL509.
Other than that I followed Bruce's circuit and layout to the letter.
Steve
It is my take on the new Transcendent "Son of Beast" output transformerless tube amplifier.
The design was built from the circuit that appears in Bruce Rozenblit's latest book "Tubes & Circuits"
An externally hosted image should be here but it was not working when we last tested it.
It uses the earlier 40V heater PL509/519 top cap sweep tube rather than the newer production octal based JJ EL509.
Other than that I followed Bruce's circuit and layout to the letter.
Steve
Last edited:
Here is my latest project.
It is my take on the new Transcendent "Son of Beast" ...
It uses the earlier 40V heater PL509/519 top cap sweep tube rather than the newer production octal based JJ EL509.
Steve
Hi Steve,
Congrats with your new "son" OTL ...
Nice unit.
Did you a "point-to-point" wiring (or pcb)?
Did you a test/measure about power output (before clipping) and stability Dc-output?
My experiences with OTL T12(concept Trancendent): the PL519 is a good tube (even second hand after test).
(This is not a product placement)
I did a point to point job.
I have not measured the power output, but Bruce quotes 15WPC.
The amp is rock stable with the DC offset staying at zero once set.
Once the initial setup and consequent settling in period has expired (about three days)
The whole thing is set and forget.
I have not measured the power output, but Bruce quotes 15WPC.
The amp is rock stable with the DC offset staying at zero once set.
Once the initial setup and consequent settling in period has expired (about three days)
The whole thing is set and forget.
Thanks for the link .ANy chance you could start a thread about your project on diyaudio .one of the last photos (with speaker)
T?umacz Google
CHeers
Mal
Here is my latest project.
It is my take on the new Transcendent "Son of Beast" output transformerless tube amplifier.
The design was built from the circuit that appears in Bruce Rozenblit's latest book "Tubes & Circuits"
An externally hosted image should be here but it was not working when we last tested it.
It uses the earlier 40V heater PL509/519 top cap sweep tube rather than the newer production octal based JJ EL509.
Other than that I followed Bruce's circuit and layout to the letter.
Steve
Love top caps
Cheers
Here is my latest project.
It is my take on the new Transcendent "Son of Beast" output transformerless tube amplifier.
The design was built from the circuit that appears in Bruce Rozenblit's latest book "Tubes & Circuits"
An externally hosted image should be here but it was not working when we last tested it.
It uses the earlier 40V heater PL509/519 top cap sweep tube rather than the newer production octal based JJ EL509.
Other than that I followed Bruce's circuit and layout to the letter.
Steve
Steve,
The appreciation of loving care in one's work transcends dimensions. I love your guests.
Hi from Russia!
my first tube amplifier
my first tube amplifier
An externally hosted image should be here but it was not working when we last tested it.
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