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PSE 807 tube amp schematics
Submitted by costas sarris on Sat, 30/08/2008 - 13:07.
This is the final schematic of my Parallel Single Ended 807 monoblock tube amps diy project. Note that we apply no feedback at all.
There is also a modification schematic using the 5687 tube as driver
Find the 807 tube power supply schematic by clicking here
The OPTs are hand made designs made by a guy who lives in Beograd (Serbia). All OPTs are special orders according my needs and follow exactly the tube characteristics for each design.
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Can you please explain 5 Ohm
Can you please explain 5 Ohm cathode resistor on 807 tubes? Normally it is 250 - 400 Ohm.
In auto biasing the tube yes
In auto biasing the tube yes you have right, (usually is 250 - 300 ohms), but here we have a direct -15.5 volts to the grid for biasing the tube, so we need only a small resistor for dropping about 250 mV from cathode.
you can take a look here
costas
R6 is 470 or 470k? or even
R6 is 470 or 470k? or even 47k?
It is 470K
It is 470K
I was thinking, to include
I was thinking, to include treble, middle and bass controls, with possible gain, where would these be included in the wiring?
This is a dual mono power
This is a dual mono power amp. If you are thinking to include treble, bass, gain etc I recommend you to construct a separate pre-amp.
costas
Stil trying to copy
Stil trying to copy schematics??
Pls be more specific . Do
Pls be more specific . Do you have any problems with the schematic ?
T8 = 72V (30V is all you
T8 = 72V (30V is all you need
how 72v(?)ma
Can you please provide info
Can you please provide info (schematic) for the output transformers.
Thanx
Nikos
Can you comment on the OPT
Can you comment on the OPT primary resistance?
OPT is 3.8K primary
OPT is 3.8K primary
Thanks for sharing some
Thanks for sharing some information in this blog..........
Keep going
I just got 1 mono block
I just got 1 mono block done, I used NOS GE 7027a's, in place of the 807's, And I'm happy with the outcome, Has plenty of power, looks good, and runs quite well! Thanks again, and I hope you do a quad PSE 807 soon :)
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