SP 12 SE

[soundude]

lee looking at the power supply there isn't enough filtering. tube circuits unless power stages should at least have 3 sections of filtering, r/c networks, the regulaor and the diodes aren't needed. tubes have a wide range of operation not like transistors. In my opinion...
I would add another r/c after the regualtor, this will bump up the voltage some but you can adjust the resistor to adjust for the output voltage.

 

[laatsch55]

Ok John, let me digest all this stuff. Gotta go tpo the field for a little bit, then got a local who brought a 400 by to be converted.

 

[mlucitt]

A Walk-in!

 

[soundude]

Lee you becomin a popular fella!!

 

[laatsch55]

Oh, I've spread some PL seed up here. Anywhere in Gillette is 5 min from my house.

 

[laatsch55]

Well, it quieted down a bunch after switching which filament wire I cap-bypassed, phono stage, not a black hole, but can't notice it till you put your ear up to the speaker, everything else, a magnitute lower. Gotta mow the lwn, then we'll try the TT and some pots on the phono board inputs.

 

[Gepetto]

I heard the neighbors in WY are complaining about the loud music at all hours and the lawn that has gone to seed...

Where are their priorities?

 

[laatsch55]

Exactly Joe, I mean DAYAM--where's the neighborhood kid that wants to mow lawns!!

Johnny D, I have some 400 volt , 4300 uf caps if you can use em.

 

[Rex Everything]

Anytime you want to start "seeding" Vegas with some WOPL love just let me know

 

[Gepetto]

That kid is on the couch playing video games Lee. I guess I wouldn't mind as much if that kid was designing video games, but that ain't happening either.

 

[laatsch55]

Amen Joe. know exactly what you mean.

It's gettin there Paul.

 

[speakerman1]

Next weekend is time to get the sound room set up and all the stuff out of my living room finally. We are making progress though. A very little at a time. LOL Good luck Lee and happy listening.


Larry

 

[laatsch55]

Don't know if we'll listen to it too long. I'm sure you're wanting this pretty soon.

 

[speakerman1]

Take your time. I'm in no hurry. It will be awhile till I'm ready. I Have to make cables and a few things I have to dial in. Roll some tubes and things. Want to get the best possible sound. So I will spend some time playing around.

Larry

 

[laatsch55]

Pretty impressive distortion specs, hang on a few minutes.

 

[speakerman1]

What ever they are I don't think they would be the same as a stock amp. I don't know. I do look at distortion. Don't remember the numbers. I almost went with some different Diodes but I didn't.

Larry

 

[laatsch55]

Line Level Inputs

 

[speakerman1]

Better on the high end. The tubes need to burn in yet. It will sound a lot different.


Larry

 

[laatsch55]

Ok. I thought it was a damn good start, considering what it was before.

 

[laatsch55]

Frequency Response, Line Level Inputs