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Translation - No chemicals, the switch has been opened and I am therefore against it in this case.

My upgraded PL2000 Preamplifier signal output comes right off the output of a Texas Instruments/Burr Brown "SoundPlus" OPA2134 SMT OPAMP (formerly RCA 4136) via a BrownDog adapter P/N 060601 and through a Panasonic 22uF/63V DC Blocking Capacitor in each channel. There is no pulldown resistor. I...

If you could duplicate an original Phase Linear solid knob, you would have quite a following here on this forum. Personally, I think it is too much work. There is a very similar knob available from RS PRO https://us.rs-online.com/product/rs-pro/499961/70639231/ The P/N is 499961 and the price is...

We are a friendly and generous group... Eric, I thought you twisted your Bias Transistor Wires, but these look braided!

The issue with the original Sockets is the steel spring clips for the Transistor Pins. They are weakened by insertion and removal as well as heat cycles. You can attempt to squeeze them together with needle nose pliers, but that is a temporary fix. Those sockets were the best solution available...

That's him...

I can send Tony to break his knees if he reneges...

245 Miles from me. 7 hours round trip. I could do a road trip if you are buying breakfast and lunch.

We need more details for the obituary... Tweeter type - Tweeter Manufacturer - Tweeter Impedance - Tweeter Frequency Bandwidth - Crossover Frequency - Amplifier Responsible for the Loss - Band Involved - Song Involved - Were You Sitting or Standing - We are a curious group.

From the AI-sphere: The RCA 410 transistor, developed in the early 1950s, was part of RCA's significant contributions to transistor technology. The DoD assigned NSN 5961-01-0006-8005 to this transistor in 1975. Phase Linear probably bought a majority of these transistors during production of...

Epoxy under the capacitors for better Bass Response...

Chemical=Electrolytic in Belgium.

I would be curious about the Gain (hFe) readings on these newer RCA transistors. Real RCA 410 (and the exact same RCA transistor with a different P/N 66546) measure anywhere from 14 to 44 on my Sencore TF-151A. Your readings will be different but the range should be similar. Newer transistors...

You are doing all the right things.

If you mean the SAE 5000A, yes I have one for sale because I no longer have a turntable nor a tape machine of any type. It has been upgraded with new Electrolytic Capacitors and performed well when I had my turntable, it includes the Manual in soft copy. I will send you a PM. PM sent. Now I...

That is very kind, but I am hesitant to start a "GoFundMe" for this guy. This Forum is so great that I feel others might be compelled to help out and I am not that good at running a cash ledger. Hell, I might get more than he needs. Thanks for the offer, you guys are amazing!

Yes, Joe is sourcing them. They will likely be similar to or the same as the WOA Model ONE VU Meters because the new meters require a new Meter Bracket, Meter PCBs, and Faceplate to fit the PL400.

The disappearing Toggle Switch.

And in the WOA Model ONE clipping occurs around an input signal of 2V?