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Curious as to why... curiouser as to why you eliminated the bias transistors.

Thanks for posting the photo. I saved it as a wiring guide. Which 2 wires are you referring to Gene? The ones for meter lighting? The leads for the thermistor? Both? That's a good idea about the meter taps. I already had figured on connecting to the output side of the DCP. 2 ring terminals...

Read several pages. Looks like I'm good to go. Thanks Gene.

Well, before I place my order to WOA I thought I should check the transformer outputs first. No sense having a beautiful rebuild that can't be used. Under no load conditions as in Nothing connected to the transformer, my voltages seem a little low DC = +57.5 and -57.4 from rectifier with 5.7 vac...

Thanks guys, 8 of each it is.

Hey guys, need some guidance. I'm going full comp on this restore. So do I need 8 of the 96's and 8, 95's or 6 and 6 then order RCA 410's for drivers?

Got plenty of the fuses...everything else is on the list. Might double up on the Busbar/rectifier/snubber parts. Have to go back into my other 400 to add the nylon washers between the transformer and the aluminum riser anyway.

I can only imagine what that must sound like. Looks incredible.

placed my order for the DCP yesterday. Gonna get my list wrote up and order all the WOA parts on saturday.

Just completed ordering the 408...and the Dongle. The wired remote wasn't available.

I always wanted to try bi=amping, but never bought a stand alone active crossover or a pair of speakers that could be bi-amped. A small mod to these SM-155's will resolve that issue then I can check it out once I have Val resto modded and tested.

Looks like that Dayton 408 is the way to go. Don't know what I'm gonna do with those purty knobs and pots now though...

DSP? I don't know what that is. Please refer to username...o_O:p

Thanks for this George. I took the time to read the whole thread...and reread it...and again...lots to digest. I'm left with the question of how then to control the output of my pl400. My problem is I have the pre out of an Sa 9800 to control 3 power amps. 2 pl400's and the amp stage of the...

Amazon. Search for guitar knobs.

Got the knobs for the meter range and input gain controls Val is getting. Curious which arrangement ya'll might like best. I'm kinda partial to the black top silver lower.

...And a few more pics. Ever see such a mix of outputs?

This is Val. She's a little worn and tired, but worthy of restoration and improvement. My hope is to chronicle my first ever rebuild of this amplifier. Yes it's ambitious, but I'm retiring toward the end of this year and I want a hobby that will put 27 years of avionics skills to work. :-) I...

Good morning Joe, Out of curiosity, if you decide to have the new faceplates (thick or standard) made when do you think they would be available and what would the ballpark price point be? Looking at a full comp WOA rebuild on a "Val" PL400 and working on a budget. Harold.

Incorporating all these upgrades, seems to me this evolves the Pl400 to a whole new subspecies.