Greg wrote "Are those voltages read off the transformer connected to the circuit, and mic, or lifted from the rest of the power supply? You're feeding it 220VAC?"

Yes, the voltages were read directly off the transformer fully loaded with mic. Being fed from a 220V variac. With the above conditions ...

Greg wrote: "That was probably a custom toroid transformer that we bought for this purpose. I've had good luck with the Hammond 262D6 in other PSU projects. It doesn't have a dual primary, which is too bad, but the price is right... "

I'll probably end up with a custom part too... I've got a query ...

"Modernizing a Neumann N-61v mic power supply with XLR connectors, IEC power inlet, 120V transformer (from 240v), and recap.
This will work with the Gefell/Neumann 582s and 563s."

I know you did this a while back, do you remember the model number for the 120V replacement transformer that you used ...

Looks like it's coming along well Greg. From the far pics, it first appeared the the input trannys were XLR connectors! My first thought was "WHAT AN IDIOT!". JK Then I noticed that they were actually input transformers. I like the blue PCB too. I'm jealous...

Joe just e-mailed me pics of his ...

Jeremy wrote:If anyone wants to write an article on the obsolete-ness of digital, I have about $20,000 worth of proof in my basement.

You mean about $200 worth of proof

Thanks Greg. I'm using the internal power supply for now, until I can hunt down a schematic for the power supply. I talked to a dude in the GML booth at AES though, and I may just say screw it, and go the GML route too...

The EQ works like a champ now. The new opamps run MUCH cooler than the original Sontec amps, and there's a huge improvement in the sound, especially the low end. I'll be experimenting with placement of these things in the next few weeks, but right now, they're sitting in the output position. I may ...

Hey Greg,

It's been a while, but I've finally completed the mod to my Sontec. Here's some pics...





Top view of adaptor...

http://i74.photobucket.com/albums/i276/velvettone/PDC_0042.jpg




Bottom view of adaptor...

http://i74.photobucket.com ...

We use a consumer stereo amplifier. Sherwood, to be exact. Wire the outputs straight to a resistor box to load it down, and match the Z of your headphones, and you're good to go! You should be able to find something on THE BAY for 20 bucks or so.

Our headphones sound better than any commercial ...

I did the zener thing too, but I think I was too late and had already kilted the MM990... I should have taken a picture; it looked like an alien DOA!!!

Still waiting on the JLM99v's to come in from down under. I only ordered 2, but I'm gonna play with the HS1050/99v combo in a single channel ...