Modified Paramour 2 (SR-45) as headphone amp?

Caucasian Blackplate said:
The 5V/3A unit should do the job!

Thanks Paul.

I shopped around for that transformer this morning, but nobody had a pair in stock.
The 6.3V/3A was hard to find as well, so I ordered a pair of the 6.3V/4A transformers.
That one must be a more common part number, as everyone had them in stock, and they were $8.00 cheaper apiece.
Guess I'll need a slightly bigger dropping resistor.

So, once these transformers arrive, I'll abandon the 2.5V winding on the PT-2 transformer.
I'll mount them somewhere under the chassis plate, and wire them to my existing 'perf board' filament supply boards.
Then I'll wire the boards up to pins 1 and 4 on the tube socket.  But then...

1.  What should I do with the center tap on the secondary side of the 166N6 transformer?  Ground it?  Leave it disconnected?
2.  Should I leave the hum balance pot intact, or pull it out of the circuit?

Mike
 
You should leave the center tap floating. I would also retain the hum pots, as there will still be residual noise with the DC supply that can be nulled out.

-PB
 
Doc B. said:
Yo Mikey! Doing a track day this year?

Way more than one!  ;)
I've got a membership to this place:

http://www.nyst.com/

If you Google the place, you can probably see some beter aerial shots of the track.
Super grippy pavement, lots of elevation changes....a real blast to ride!
 
Very cool. Out here the hot new track is called The Ridge, though it has been getting some flak lately for being kind of arbritrary with regulations. Might give it a try some day after I get my old street riding skills back. I'm suffering from old age at the moment, messed up my knee tucking on these dadgummed sportbike pegs. Don't recall that being an issue when I was 21.
 
Oh man, that place looks really nice!
How close it it to your house?

I can wholeheartedly recommend track days as a great way to hone your riding skills.
The coaching and tutoring you get from the riding instructors is very beneficial, and
much of it translates to street riding as well.


I've been getting spoiled lately, with four tracks within three hours of my house.  The
latest and greatest facility will be opening in the spring, and is less than 1/2 hour away!
 
The locals laugh because it is in Shelton, which is sort of the Appalachia of Western Warshington. It's about 45 minutes away, not too bad.
 
Back
Top