Steel String Singer#002 build from Scratch

[timrobertson100]

What did you do with your mid switch please? I’ve tried various things people have suggested but never been satisfied.

[Richard1001]

What did you do with your mid switch please? I’ve tried various things people have suggested but never been satisfied.

I found that putting a 1uF cap over the 270 ohm resistor in the phase inverter works great and is like other mid/accent switches seen in early amps

[Hendrixianer]

What did you do with your mid switch please? I’ve tried various things people have suggested but never been satisfied.

checked it just now after your question,and i don´t have there any Problems,yeah,it gives a bit of Boost,,but depending on other Filter and Tonestack Settings,you could easily dial in,so where is your Problem with the Mid Switch?



O.k,now i know,what you mean,i tested it before, with Attenuator and Level quiet down,but without Attenuator and Level up it is very Harsch,so i have to work on it,so my first Impression was right on it

[Hendrixianer]

What did you do with your mid switch please? I’ve tried various things people have suggested but never been satisfied.

I found that putting a 1uF cap over the 270 ohm resistor in the phase inverter works great and is like other mid/accent switches seen in early amps

Thank´s,found your Thread and the updated Layout

https://ampgarage.com/forum/viewtopic.p ... caf99fa8d8

[dorrisant]

It seems,Nobody take care of it,in all the Steel String Singer clones

Martin's way of doing it gives you about 170v potential... So not "nobody".

Nice build. It should bring joy.

[Hendrixianer]

It seems,Nobody take care of it,in all the Steel String Singer clones

Martin's way of doing it gives you about 170v potential... So not "nobody".

Nice build. It should bring joy.

Thanks,
But Martin didn´t give me a Potential of 170V,I don´t mean the Cathode Follower after the Pi,I mean the CF after the Filter Switches,there i have cathode Voltages over 220V !
played just 2 hours,checked all Switch Positions,yeah,Mega Fun to play this Amp

[martin manning]

The mixer stage CF's run at 206V Vh-k per my simulation (440V B+1). Data sheets show a maximum of either 180 or 200V depending upon the brand. It's a good idea to elevate the heater string to be safe.

[Hendrixianer]

And here is the modifyed Layout which now corresponds my to Build:
Attention: Protection Diodes on OT are R3000 Types,and not 1N4007 !

[martin manning]

Nice, thanks for posting that. I suggest that your modified drawing should be clearly identified as such, and it should list the differences from Ryan's layout.

[Hendrixianer]

Nice, thanks for posting that. I suggest that your modified drawing should be clearly identified as such, and it should list the differences from Ryan's layout.

Yes,Sorry,Done !!!

[Hendrixianer]

Nice, thanks for posting that. I suggest that your modified drawing should be clearly identified as such, and it should list the differences from Ryan's layout.

Yes,Sorry,Done !!!

And much Thanks to you and R. Colgan,for your hard Work and posting it in Net,so i could build this Amazing Amp

[martin manning]

No problem, and thank you!

[Hendrixianer]

Finished the Headshell Today

[captaincoconut]

Sehr schön!

[timrobertson100]

Perhaps a daft question… you don’t use 100R balancing resistors when elevating the heaters?