Unverified wiring diagram for your review TAKT GA-10

[tremolo]

Amp Community
Unverified wiring diagram for review.
Would you have a look at this. I have a TACK GA-10. Basic repairs and it is now running. Ya Hoo! I was baffled at the rectifier until I got help from the group.
A doubling rectifier.
Original other than the removal of one resistor on the input.
I put my meter on a few spots and recorded the voltage. I have now made a wiring diagram and I am a bit unsure of it.
Here it is.
Thanks again
Tremolo

[tremolo]

OK the one diode was in the wrong place.
Please see revised wiring diagram.
Thanks

[thetragichero]

i haven't messed around with grid leak bias but it appears that it would work, although you'll want to add the kilo (k) to the resistors that need it. if the volume/tone controls aren't super complicated to suss out it would be nice to have those as a complete schematic. you'll end up somebody's hero when they come looking for it

[tremolo]

Good feedback. The volume and tone was so simple but I can add it in.

[tremolo]

Version #3
See... I told you guys that the rectifier twisted my mind.
One rectifier needed to be reversed.
So see version #3. Keep the feedback coming and I am sure we are close if not done.
Thanks

[tremolo]

Hey sorry for all of the go around. But I think we have it.
The version that matches the amp and Bogen systems that use the same design is as follows.
Let me know if this works for you.
I will add in the volume and tone on a rainy day.
Tremolo

[tremolo]

I added in the Volume and Tone

[sluckey]

This is a grid leak bias tube stage. You need a capacitor between the vol/tone network and that 5M grid leak resistor.

[mhuss]

I hope the "100" and "270" plate resistors are really 100k and 270k, ditto for the 500 to ground resistors.

[Stevem]

Thanks, as now we know the value of the tone cap.

[tremolo]

OK I will double check that and revise. There is a .01 between the tone and volume.
Thank you.

[tremolo]

Yes my mistake I am glad you helped.
See update.
Thanks Tremolo

[tremolo]

You have pointed out that this is a grid leak design. I have a wiring diagram (Beltone AP-A) with the same tubes as the Takt. And I that I think, is cathode biased.
Is there an advantage to either or just different?
Thanks in advance.

[sluckey]

OK I will double check that and revise. There is a .01 between the tone and volume.
Thank you.

Not talking about the tone cap. You need an additional cap to prevent the vol/tone circuit from messing up the delicate grid leak negative bias voltage on the grid of the second 6AV6. Just like the grid cap on the first 6AV6.See pic...

[tremolo]

Wow this is great. There is no cap there. But I am looking at the wire to the tube pin and and solder and it is not done well or original. So I am going to add in a cap in that place and see what happens.
This is so helpful!