Doug Self's New Preamp Construction and Pictures

[redjr]

Originally Posted by redjr

I intend to use shielded cables to/from the phono board. After making some measurements tonight on my 4 cavity holes, I discovered they were milled to the wrong diameter! Smaller by .33mm than my file specified. I've contacted FPE, so will see what they say.

BTW, FPE got back to me and without question sent me a UPS label for use. In the mean time, I ordered some different style 3/8" nuts that look like they will work in the smaller cavity hole. I'm waiting for them to arrive. Hopefully the'll work out and I won't have to send back my FP for re-work. Stay tuned.

[redjr]

Here are few latest pictures. The front panel sans knobs that won't fit! I think I've narrowed down my final layout options as shown. Hopefully, the traffo won't be an issue with hum inside the case, but I may have to put a shield around it. It's getting closer...

Trouble with uploading pics. Will try later.

[AndrewT]

just attach your pics

[redjr]

Here are some more pics.... I'm almost to the point where I can start anchoring down all the boards and start on the wiring process, but before I do that I will wire the traffo to the PSU and get a reading on the voltages to ensure there are no issues. Then it should just be a matter of finalizing the intra-connect lengths and plugging everything together.

[redjr]

A few more construction photos of my progress. Got the mains, switch, traffo and PSU wired up today. Checked voltages and everything looked good. If you're wondering what the little blue tits are sticking up from the bottom.... I used some self-tapping screws to attach the rubber feet and then used some heat shrink tubing to cover the exposed screw. Not the most elegant solution, but it appears to work!

[AndrewT]

What did Chubby Checker sing?

He said it in 1960 and the message has never changed.
But, we were not listening and he had to repeat in 1961 and 1962 and again in 1962.

[redjr]

Originally Posted by AndrewT

What did Chubby Checker sing?

He said it in 1960 and the message has never changed.
But, we were not listening and he had to repeat in 1961 and 1962 and again in 1962.

You mean I didn't 'twist' good enough? Or, there was no new twist in my thread. I know, it's a little boring, but this project is slooooowly coming together. My special 3/8" pot nuts came today, so things are moving in a positive direction.

[AndrewT]

I see untwisted cable pairs lying on the chassis floor.
The mains cables that are not yet connected will also need to be twisted all the way from the transformer winding to the power input socket.

[Bonsai]

redjr, thats a very nice mains switch assembly (switch + screw terminals and mounting bracket) you have on your front panel. Is that a bought in assembly, or did you build it up yourself.

Awesome job BTW - I am looking forward to your assessement of the sound once completed.

[redjr]

Originally Posted by AndrewT

I see untwisted cable pairs lying on the chassis floor.
The mains cables that are not yet connected will also need to be twisted all the way from the transformer winding to the power input socket.

Yeah, I know. It was on oversight. I'm going to fix it.