Search results

I used shielded RCA cable. That was what was originally used in my PL400 so I just put in some new ones.

Build complete, fired it up and it sounds great. Hats off to White Oak for producing such a great product.

Almost done. Ran into some minor problems to be expected with such an early unit. Had to reposition the capacitors to have clearance for the meter, also had to shorten the driver board standoffs as the meter hit the transistor cooling fins .

And now the fun begins, stripped and ready to start the backplane. New capacitors installed along with gold plated RCA Jacks and Speaker Binding Posts.

White Oak Rev G1 Board complete, Easy build took about 5 hours, didn't want to rush. Built as Full Comp. decided to bite the bullet and get the backplane board, looked at the schematic, hand wiring was doable, but then I am not a glutten for punishment. As they say it didn't happen if there is...

Well not much to go on, but I guess that I will be re-wiring the output stage like Phase Linear did on their fully comp 400. Budget is tight and I have a lot of time on my hands. :)

Just waiting for my board and then I get to play too.;)

OK, I pulled the trigger on a White Oak PL14_20 RevG1 Dual Mono Control Board. My Question to the hive mind here is, what are the pro's and con's for Quasi or Full Comp?

Thanks for the information, my meters look like the Midland in the second picture. My control board is a slightly earlier version of the first board you show. Where my board has traces cut by hand, your board has the traces modified before production.

No Bob Carver initials, no builder name.

My Service Manual is undated but I would guess that it dates from around 1972 or early 1973 as the schematic does not correspond to my schematic dated Aug 9, 1973. The copy I have is a hard copy, but I can make a scan. There are also hand drawn circuit changes to the schematic that add...

The meters are not marked in any way, just going by the information in my service manual. The meters are lit by fuse style bulbs and the meter circuitry uses a full wave bridge rectifier which I have not been able to find in any of the schematics I have. The service manual I have says that it...

I guess it's time, I purchased my PL400 new in 1972, build date 42nd week of 72, S/N 17, Edmonds, WA. It's been a faithful amp with only one problem about a year after I got it. Something failed and it trashed a set of Bose 901 speakers. I have to give it to PL as they repaired no charge as...

Good to see people taking good care of PL400's. Just getting ready to do the same. I have a very early PL400 that I bought new. Build date 24th week 1972 S/N 17, Edmonds, WA. It had some serious issues in the beginning, something failed internally and blew up a set of Bose 901’s. Phase Linear...