Matrix has a lower signal than the Main LR.

GLD GLD Troubleshooting
1

Hello guys,

I noticed that the matrix (both stereo and mono) has a lower signal output than the main LR output (both stereo and mono). I tried turn off all EQ, compressors and it was still the same. If I want the same signal, I have to send to the matrix Main LR about +4dB more. I was afraid that there is also a loss frequency, but not. It only has a lower signal.

Have you met with this someone?

Thank you… :wink:

Have a nice evening.

2

check DCAs

3

Compressor output gain?

Chris

4

I did not use DCAs and I had still them at zero. Compressors were disabled at every outputs (Main LR, Matrix).
If you can, try it… :wink:

5

Could you post a copy of your show file?

Chris

6

Hi Chris,

yes, I can.

In this show there are three stereo matrix and main LR. Main LR is only a “sending” to matrix. When I got to speakers Main LR, signal and volume was higher than when I got to speakers LR Matrix. And meter of Main LR was higer than Matrix LR.

I hope that you understand me…

Thank you…

7

Thanks Andrew. That all looks fine, LR and matrix both have their master faders at unity and you have a unity send level from LR to matrix.

You do have some cuts in the matrix GEQ, could those be responsible for the level change? Try switching it off and see if the levels match up.

I wonder if it would be possible to add an autogain setting to the EQ like you get on some KT products…

Chris

8

When I get my GLD demo back I want to setup and test this with tones and noise and a program. I did notice on a couple of installs that with a matrix feeding the usb recorder I had to crank it up beyond unity to get a decent level especially on pastor’s sermon. I think I remember winding up with a compressor engaged with a level bump and tight threshold for several db of compression to protect recording. I just never took time to test the levels to see if the matrix circuits run lower.

9

Noticed this 6 month ago and then informed my distributor.
This when LR was sent to two different steriomatrixes. They came out with 4 db difference.
No compressor engaged.
Confirmed twice that the LR was set to unity on both matrix sends.
Took the show file to another GLD to confirm not to be hardware issue.

Has not heard anything since then.

10

to Chris: I tried to switch off every EQ (GEQ, PEQ) and compressors and levels were still same.

As soon as I have the opportunity, so I try to send to one stereo matrix.

11

I wondering if this has something to do with a dB offset when summing the L&R to a mono matrix. I don’t know that this is an option on the GLD but I have seen it before on metering when summing signals together.