Muff's Modules & More

weerzin

On my DCSM (part of a Soup Kitchen panel built around 2006) the two outputs are out of phase with each other.

Just curious if this is the way it should be.

Also, with the controls fully clockwise, the gain at channel 2 is noticably higher than at channel 1.

Has anyone tried calibrating these VCA's themselves? I might.

Thanks for any feedback.

electronicpresskit · Posted: Sun May 27, 2012 12:59 am Post subject:

I noticed that issue when I had one of those and it seemed like a mistake to me. I *think* the issue was only on the 1/4" outs or the XLR outs but one of them was normal?

I don't remember any gain differences between the channels.

anthonybisset · Posted: Sun Jun 03, 2012 8:05 am Post subject:

I had a soup kitchen that had the same problem (I didn't sell it, I dismantled it as I needed the FS, this is before m-boats.). Anyway, very odd 3 of us have experienced this. Anyone else?

b3nsf · Posted: Sun Jun 03, 2012 12:47 pm Post subject:

My soup is a new one from 2011, it appears the two channels will cancel each other out if the same signal is applied to both, the volumes are the same however...

Borellus · Posted: Sun Jun 03, 2012 2:55 pm Post subject:

I believe the XFAD works the same way. This may be a feature rather than a bug (possibly optimized for feedback loops?).

weerzin · Posted: Mon Jun 04, 2012 6:23 pm Post subject:

thanks for the feedback guys.

sounds like it's supposed to be this way then, if all four of us have out-phase-outputs.

electronicpresskit, are those xlr outs you mention on the back of your panel, as a custom addition? i vaguely recall those being offered/mentioned before. i don't have any xlr connectors in my serge system myself.

the level difference i'm experiencing just needs some calibration, i imagine.

electronicpresskit · Posted: Tue Jun 05, 2012 12:49 am Post subject:

I was not the original owner of the panel I had so I'm not sure about the XLR outs being custom, but I too seem to remember hearing about it being an option from STS.

If this is a feature, I'd love to understand the logic behind it. I always thought most people use this as a sort of main output to the rest of their system, and being out of phase was a mistake in the wiring documentation or an incorrect trace on the board...especially since the XLR's did not have this issue (feature).

rastko · Posted: Tue Jun 05, 2012 1:20 am Post subject:

hi,

mine is out of phase as well:-).

Yes the XFAD works the same way as well.

so I do not know why but it is normal to be not normal.

Rex ?

i wish you a nice day

r

anthonybisset · Posted: Sat Jun 09, 2012 6:01 am Post subject:

Mistake or not, I'm critical of a mixer design that has the two output channels out of phase by default without a toggle or pot to control the phase.

sascha.victoria · Posted: Sat Jun 09, 2012 1:19 pm Post subject:

I'll have to check mine later. Before everyone gets their panties in a ruffle shouldn't someone ask Rex why it's that way? Getting all critical of something without understanding where maker is coming from doesn't make sense to me.

I'm pretty sure XLR, TRS, or TT connectors on the back are at the buyers request and do not fit on the shallow boats. Also, the connectors on the back are isolated from the ones on the front so you can plug into the front and back process things differently, monitor separately, etc... This is very handy.

Setherian · Posted: Sat Jun 16, 2012 4:39 pm Post subject:

so did anyone contact rex about this or?

MindMachine · Posted: Sat Jun 16, 2012 11:54 pm Post subject:

I might call him this week. I need to check his status on vinyl. I send him blues recordings fairly often.

Has this out of phase issue caused problems? Why would you send the same signal to two inputs on the DCSM? If they are different inputs on each channel does the problem go away?

I am not so hip on these basic acoustic issues like phase cancellation.

b3nsf · Posted: Thu Jun 21, 2012 5:41 pm Post subject:

I called STS and talked to Kevin Fortune about it, It is still Serge's original design, the second channel is inverted because there wasn't enough room otherwise... Also Serge wasn't being too concerned about passing an already-stereo source signal back then...
thumbs up

I'm not too disappointed if Serge thought it was cool back then... Drinking

keep in mind that right next to this module in the soup kitchen is the dual phasor so if you were really bent out of shape you could phase them any way you liked!!

sascha.victoria · Posted: Thu Jun 21, 2012 6:42 pm Post subject:

After thinking about this I can't really see why this would be an issue either. The SAME signal out of both channels? I can't imagine doing this myself.

I guess the point where I'm coming from is that this isn't a multi-mic drum recording where you need to be really aware of these issues so the drums don't sound phase-y. Unless that's what you want. This is a completely synthetic sound. Sure you spend serious time tweaking it to be just right but I can't recall ever making a sound that didn't have some left right movement in it. If I don't want left right movement I generally want it to be mono so I'm only using 1 out. You know?

sascha.victoria · Posted: Thu Jun 21, 2012 6:44 pm Post subject:

Can someone explain why this would be an issue to them as I can't see why it would be an issue to me.

electronicpresskit · Posted: Thu Jun 21, 2012 7:04 pm Post subject:

b3nsf · Posted: Thu Jun 21, 2012 7:21 pm Post subject:

electronicpresskit · Posted: Thu Jun 21, 2012 7:45 pm Post subject:

weerzin · Posted: Fri Jun 22, 2012 3:43 pm Post subject: