Search found 5449 matches

by mediatechnology
Wed Mar 09, 2011 10:32 am
Forum: Build
Topic: Mid Side M-S Matrix Construction Information
Replies: 121
Views: 432708

Re: Mid Side M-S Matrix Construction Information

sr1200. I found the original document link on the web server: http://www.ka-electronics.com/PicoComp/PCB-Kits/Documents/PSU/PSU_Documents.htm The values you show are about right based on the BOM there. C3 is meant to be a film or mono ceramic around 100 nF. Here's a ripple estimator: http://www.proa...
by mediatechnology
Tue Mar 08, 2011 3:59 pm
Forum: Pro Audio Design
Topic: SMT passives for audio
Replies: 34
Views: 64447

Re: SMT passives for audio

Correct. I need to see if I can find the brands that "weren't as good."
by mediatechnology
Tue Mar 08, 2011 9:44 am
Forum: Pro Audio Design
Topic: SMT passives for audio
Replies: 34
Views: 64447

Re: SMT passives for audio

We went from 0603 to 0805 resistors for the lower values. In larger values there's unlikely to be a difference but in the low values where the signal current was a significant percentage of the power dissipation the tempco caused modulation. I agree with John that with caps bigger isn't necessarily ...
by mediatechnology
Tue Mar 08, 2011 8:49 am
Forum: Pro Audio Design
Topic: SMT passives for audio
Replies: 34
Views: 64447

Re: SMT passives for audio

Here's the Susumu link:

http://www.susumu.co.jp/english/pdf/products-j01-04.pdf

Availability of these resistors with "comfort sound" through distribution was an issue:

http://www.susumu.co.jp/english/pdf/products-j01-05.pdf
by mediatechnology
Tue Mar 08, 2011 7:29 am
Forum: Pro Audio Design
Topic: SMT passives for audio
Replies: 34
Views: 64447

Re: SMT passives for audio

I seem to recall reading something that the physically larger components are better behaved. Like given two resistors of the same value and composition, the larger of the two would be better behaved. We up-sized resistors by one size on a later spin of the board and changed vendors to reduce the se...
by mediatechnology
Mon Mar 07, 2011 12:25 pm
Forum: Pro Audio Design
Topic: SMT passives for audio
Replies: 34
Views: 64447

Re: SMT passives for audio

Thanks for joining us! There are some pretty significant differences in SMT resistors which, due to signal-induced self-heating, have better or worse THD-3. On a recent demo board THAT used Susumu because they tested better. Those are available from Digi-Key. Dave Hill of Crane Song shared some of h...
by mediatechnology
Fri Feb 18, 2011 5:18 am
Forum: Pro Audio Design
Topic: MicMix MasterRoom XL-305 Spring Reverb Clone
Replies: 87
Views: 485845

Re: MicMix MasterRoom Spring Reverb Project

The only one I remember having a mechanical VU was the MasterRoom B-series for broadcast. The model number doesn't seem to fit. I'd be intersted in seeing a picture. If there is a problem with the driver or electronics the parts will be numbered. IIRC the driver transistors were Motorola TO-66 devic...
by mediatechnology
Mon Feb 07, 2011 5:16 am
Forum: The Peabody Lounge
Topic: Texas Winter
Replies: 44
Views: 67110

Re: Texas Winter

Fortunately it got up to almost 60 the day after I posted this. I tried to channel my inner yankee but there just wasn't one to channel.
by mediatechnology
Sat Feb 05, 2011 8:12 am
Forum: The Peabody Lounge
Topic: Texas Winter
Replies: 44
Views: 67110

Texas Winter

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by mediatechnology
Fri Jan 07, 2011 4:38 am
Forum: The Peabody Lounge
Topic: HDTV Antenna Installation Warnings - LMAO
Replies: 1
Views: 5528

HDTV Antenna Installation Warnings - LMAO

Checkout the third block of warnings:

Image

"Do not attempt to install if drunk, preganant pr both."
"Do not eat antenna."
"Do not thrown antenna at spouse."