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I'm pretty sure that as the source to gate voltage on an N-channel FET becomes more negative the channel resistance increases. This is what happens when I make the control voltage on gate of the jfet more negative (the channel resistance increases), and logic dictates that this should lower the gai...

Okay, that makes sense, but I still don't understand why in the version of this that I actually built, increasing the drain-source resistance actually made the gain INCREASE.

I've built the following circuit, which uses a jfet as a variable resistor controlling the gain of an opamp: http://www.digitalbirdstudios.com/fetresistor.png When I increase the negative control voltage (making it more negative) the drain-source resistance increases. Seeing as the fet is acting as ...

Thanks, that makes sense.

So if, for example, I were to replace dc blocking caps in the gear under test in the second image with larger value caps, it could possibly reduce the tilt.

It was my understanding that this tilt wasn't due to filtering, but phase shift.

The tascam mixer is transformerless, and I'm running everything into my MOTU 828 mk3, so no signal transformers there either.

I've got this software oscilloscope up and running, and I've been passing square waves through various gear, and I was wondering if anyone could tell me what I should be gleaning from these waveforms. This first image is a capture of just the square wave running into the oscilloscope. http://www.dig...

I dropped a Neumann TLM127 recently. No damage done.

Today I dropped an md421. Same deal.

I love being able to say these things.

Thanks for the tip.

I found some.

I'm very happy with my m520. I'd check to make sure the little jumpers for normalling the send and receive RCA jacks are there. They were missing with mine and it was an annoying extra expense getting all the tiny RCA cables needed to normal the channels. I have this problem with my m-50 mixer. Any...

It turns on, the top half of the LCD screen is lit up, the bottom is black. It won't boot up. Sometimes there's some text, and the input and output meters light up, and horrible crackling comes out. I need advice. It's nearly five years old, so I think the warranty is done. Is there any way to fix t...

Hey,

I wrote that article. Visiting the studio was really fun. It's like a recording fantasy camp in there, lots of cool stuff. The live room is so big they skateboard in there.

Nice guys too.

Run the whole mix through a supro amp with the reverb turned up and record it in a stairwell.


At least, that's what I heard, aside from the multiples of all the instruments. I think ABBA multipled everything too.

This is usually how I do it, duplicating the track and flipping the phase. I use a Studio Projects B3 for the side, and an akg 451 or 535 for the mid. It works well.

I'm starting to get back into spaced pairs again though. It doesn't give the same stereo imaging, but it can sound lovely.

This is somewhat hearsay, but I've had reason to believe that the phantom power isn't a full 48 volts. May cause problems with some mics, which is how I heard about it. That's interesting. I experienced mics dropping out momentarily with a traveler I was using. I can't say that that the traveler wa...

Hey,

Does anyone have any idea how the GB30 mic preamps in the Soundcraft EPM series mixers compare with those in the Mackie vlz series mixers?


thanks.