Pro Audio Design Forum

It's been awhile since I reasearched it but there are a number of compliance labs here in Texas for EMC. I'm sure they're just about everywhere.

Seems like a good lab could help you with obtaining the standards and meeting them.

I just received a flyer from Panasonic Electronic Components who has introduced a number of discrete bipolar transistors, JFETS and MOSFETS. A number of the BJTs and MOSFETS are duals, the BJTs being either fully-independent or with common terminals. Some of the MOSFETS are configured in a relay co...

Congratulations to Sam Groner! From his Linear Audio series: "A new audio amplifier topology with push-pull transimpedance stage," EE Times, Audio Design Line, posted 8/29/12. http://www.eetimes.com/design/audio-design/4394979/A-new-audio-amplifier-topology-with-push-pull-transimpedance-s...

Thanks ricardo and JR. ricardo - Have you ever viewed the Schoeps circuit as a "current loop" interface? I say this because like a conventional industrial current loop, the load - in this case the emitter load - is distant from the microphone and resides in the preamp at the far end of the...

The 'half' Vds fed to gate trick was used a lot by Ray Dolby to linearise FET voltage controlled 'resistors' I looked and that's what Cordell did in the THD analyser. IIRC I've seen the half Vds in the 1176 FET shunt attenuator. The THD reduction "notches" are quite narrow in Dimitri's de...

John - It didn't look like anything I'd seen before either.

I'm wondering that by rearranging some of the ports it could be made to linearize a JFET voltage controlled resistor.

Glad I logged in today. I was going to throw out some foil I used last night.

Or just buy a 60" monitor and run Winamp.

Looked like his kit required a lot of 0603 soldering.

You know I never had one of those funky 70s-era "color organs."

Remember the old Radio Shack and Allied Electronics color organ kits?

I can stare at Winamp's visualization for hours so you can understand why I might be drawn like a moth to one of these things.

Checkout the Aurora 18×18 Kit and PCB with audio interface.

http://www.theledart.com/blog/archives/734

Do you suppose the firmware could be modified for a vectorscope/goniometer?

Tech stuff here: http://www.theledart.com/blog/wp-conten ... c-rev2.pdf