Search found 5449 matches
- Fri Nov 21, 2008 3:50 pm
- Forum: Pro Audio Design
- Topic: Mid Side M-S Matrix Uses No Precision Resistors
- Replies: 271
- Views: 620942
Re: Mid Side M-S Matrix Uses No Precision Resistors
OK. Paul - I think gain trim could be introduced at F before the bypass relay. The trim would only affect only the external processor return for both the M and S channels individually and, when bypassed, would not reduce E-E separation. Using this control it's possible to "null out" the un...
- Fri Nov 21, 2008 2:36 pm
- Forum: Pro Audio Design
- Topic: Mid Side M-S Matrix Uses No Precision Resistors
- Replies: 271
- Views: 620942
Re: Mid Side M-S Matrix Uses No Precision Resistors
Paul - That added bit is here: http://www.picocompressorforum.com/forum/php/viewtopic.php?f=6&t=71 I was thinkin' that might be another board/module just to keep the complexity of the pure matrix down. It's based on Rick Chenn's '94 design but using 1240s and a Graeme-style (Jerrald) polarity fl...
- Fri Nov 21, 2008 2:01 pm
- Forum: Pro Audio Design
- Topic: Mid Side M-S Matrix Uses No Precision Resistors
- Replies: 271
- Views: 620942
Re: Mid Side M-S Matrix Uses No Precision Resistors
Three relays sounds better than nine.
Edited:
I think we'll have to explain why there are two bypass options but having half hardware does eliminate a lot of cascaded stages when the M-S gizmo is not being used.
Edited:
I think we'll have to explain why there are two bypass options but having half hardware does eliminate a lot of cascaded stages when the M-S gizmo is not being used.
- Fri Nov 21, 2008 1:53 pm
- Forum: Pro Audio Design
- Topic: Mid Side M-S Matrix Uses No Precision Resistors
- Replies: 271
- Views: 620942
Re: Mid Side M-S Matrix Uses No Precision Resistors
OK, that gets us down to one DPDT relay.
This thing almost has to come up to a patchbay anyway so you can get to the M-S process inserts.
I'd still put extra tie points to bridge C and F (4 points total).
This thing almost has to come up to a patchbay anyway so you can get to the M-S process inserts.
I'd still put extra tie points to bridge C and F (4 points total).
- Fri Nov 21, 2008 1:19 pm
- Forum: Pro Audio Design
- Topic: Mid Side M-S Matrix Uses No Precision Resistors
- Replies: 271
- Views: 620942
Re: Mid Side M-S Matrix Uses No Precision Resistors
Actually there's no logic involved - just the switches as shown with solo audio flowing through them. I didn't mean to use logic in the "digital" sense. If the pads for them were put in there, they simply become auxillary tie points on the board. The only one where I might suggest a relay ...
- Fri Nov 21, 2008 12:37 pm
- Forum: Pro Audio Design
- Topic: Mid Side M-S Matrix Uses No Precision Resistors
- Replies: 271
- Views: 620942
Re: Mid Side M-S Matrix Uses No Precision Resistors
Thanks Paul. That does seem to make more sense. It would only allow post-processing monitoring though. Wouldn't you want to hear mid (or side) both pre and post? Or, would you do that switching in the processor?What about just putting in pads for a mute switch on the both the M and S channel?
- Fri Nov 21, 2008 11:26 am
- Forum: Pro Audio Design
- Topic: Mid Side M-S Matrix Uses No Precision Resistors
- Replies: 271
- Views: 620942
Re: Mid Side M-S Matrix Uses No Precision Resistors
Here's the solo switching logic:
https://www.ka-electronics.com/Images/j ... iagram.jpg
There can be destructive solo, non destructive or both...
The "to 1646" lines lead to the final outputs.
https://www.ka-electronics.com/Images/j ... iagram.jpg
There can be destructive solo, non destructive or both...
The "to 1646" lines lead to the final outputs.
- Fri Nov 21, 2008 10:43 am
- Forum: Pro Audio Design
- Topic: Mid Side M-S Matrix Uses No Precision Resistors
- Replies: 271
- Views: 620942
Re: Mid Side M-S Matrix Uses No Precision Resistors
I don't think so since the whole thing will probably be patched in when needed and removed when not. I may be wrong about that though and defer to Paul and Doug. FWIW the solo output could probably be mono. Three switches would be required for that: Mid/Side, Pre/Post and solo On/Off. If destructive...
- Fri Nov 21, 2008 8:55 am
- Forum: Pro Audio Design
- Topic: Mid Side M-S Matrix Uses No Precision Resistors
- Replies: 271
- Views: 620942
Re: Mid Side M-S Matrix Uses No Precision Resistors
Thanks Doug. Speaking of quick morning scans here's this: https://www.ka-electronics.com/Images/jpg/M-S_Flow_Diagram.jpg https://www.ka-electronics.com/Images/jpg/M-S_Flow_Diagram.jpg This is the basic flow diagram of the combined encoder/decoder. Notice the interstage points labeled A-H. Bypass dis...
- Fri Nov 21, 2008 5:43 am
- Forum: Pro Audio Design
- Topic: Mid Side M-S Matrix Uses No Precision Resistors
- Replies: 271
- Views: 620942
Re: Mid Side M-S Matrix Uses No Precision Resistors
Thank Paul - I'll draw us a quick picture in a little bit so we're all reading from the same page. Fortunately the scheme I'm proposing is the simplest too.