Search found 5462 matches

by mediatechnology
Tue May 04, 2010 7:02 am
Forum: Pro Audio Design
Topic: Differential Input Questions
Replies: 10
Views: 19330

Re: Differential Input Questions

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Line_Receiver_Var_Gain_Jung_Op_Amp_Apps_6-26.jpg
by mediatechnology
Sun Apr 18, 2010 3:56 pm
Forum: Document
Topic: MicMix Master Room Studio B Schematics
Replies: 0
Views: 8569

MicMix Master Room Studio B Schematics

I also found the studio B schematic. For those of you that might be troubleshooting a Studio B reverb and need the component values I'd look at the Studio C parts list. I believe they were almost identical. https://www.ka-electronics.com/images/jpg/MicMix_Master_Room_Studio_B_Schematic_Small.JPG Mic...
by mediatechnology
Sun Apr 18, 2010 3:41 pm
Forum: Document
Topic: MicMix Master Room Studio C Manual and Schematic
Replies: 0
Views: 6791

MicMix Master Room Studio C Manual and Schematic

I also have a copy of the MixMix Master Room Studio C Series reverb manual and schematics.

https://www.ka-electronics.com/images/p ... Manual.pdf (8.1 MB)
by mediatechnology
Sun Apr 18, 2010 3:04 pm
Forum: Document
Topic: MicMix MasterRoom XL-305 Schematics and Manual
Replies: 2
Views: 27890

Re: MicMix MasterRoom XL-305 Manual

I've been asked to provide the MicMix Master Room XL-305 reverb manual. I finally found a preliminary copy: https://www.ka-electronics.com/images/pdf/MicMix_Master_Room_XL-305_Manual.pdf (6.2 MB) In going through some scrap paper at my Mom's house I found hand-written ad copy. Apparently I must have...
by mediatechnology
Sat Apr 17, 2010 12:45 pm
Forum: Pro Audio Design
Topic: "Modified phantom-powered microphone circuit reduces distortion," Dimitri Danyuk
Replies: 22
Views: 39117

Re: Electronic Design IFD: Modified Schoeps Capsule Design

Since I am arguing that a lower output termination is generally harmless and could even deliver lower input noise... That's one of the things I strived for in the DN-140 pads: To keep the impedance seen by the preamp low when the pad was engaged. With an open-circuit input and high gain (the showro...
by mediatechnology
Sat Apr 17, 2010 11:58 am
Forum: Pro Audio Design
Topic: "Modified phantom-powered microphone circuit reduces distortion," Dimitri Danyuk
Replies: 22
Views: 39117

Re: Electronic Design IFD: Modified Schoeps Capsule Design

Note my edit where I missed typing "2" for 20 dB. Yeah I can't think of a single reason to go deeper than 20 dB. But maybe there is. On SSL's 4K/6K pad it looks like they used an optional 4th resistor (R3?) in the switch network to maintain the termination impedance for pad depths in which...
by mediatechnology
Sat Apr 17, 2010 9:49 am
Forum: Pro Audio Design
Topic: Mid Side M-S Matrix Uses No Precision Resistors
Replies: 271
Views: 629379

Re: Mid Side M-S Matrix Uses No Precision Resistors

I think that in conjunction with dynamics or EQ processing having level trims in the MS domain - a "make-up" gain - would be useful.
by mediatechnology
Fri Apr 16, 2010 5:39 pm
Forum: Pro Audio Design
Topic: "Modified phantom-powered microphone circuit reduces distortion," Dimitri Danyuk
Replies: 22
Views: 39117

Re: Electronic Design IFD: Modified Schoeps Capsule Design

The pads in the THAT1570 DN-140, which are switchable (0 or -x dB), are constant load. They're 20, 15, 13.6 and 10 dB. I don't recall if we settled on 2K or 3K termination. IIRC it was 2K. (Been awhile since I read it and other people changed it considerably.) To make it all of the above would requi...
by mediatechnology
Thu Apr 15, 2010 7:15 pm
Forum: Pro Audio Design
Topic: Mid Side M-S Matrix Uses No Precision Resistors
Replies: 271
Views: 629379

Re: Mid Side M-S Matrix Uses No Precision Resistors

I think the point is, in mastering, to break the L/R into M/S so you can alter the "crosstalk." (Or image.) The only justification for the precision mode is for bypass so you can compare it before to what you've done after without the matrix itself altering the "before" and to mi...
by mediatechnology
Tue Apr 13, 2010 9:57 am
Forum: Pro Audio Design
Topic: "Modified phantom-powered microphone circuit reduces distortion," Dimitri Danyuk
Replies: 22
Views: 39117

Re: Electronic Design IFD: Modified Schoeps Capsule Design

Bruno2000 wrote:I like 20 dB pads. Gets you out of trouble in a hurry. My $0.02.
Bruno2000
I agree. If you have a 10 or 15 dB dB pad and it's not enough then what do you do? You're kinda boxed in to unpatching and inserting an additional in-line.