Matrix: Why are 4000 co-ax (AES) panels louder than other panels on Eclipse?
4000 coax (AES) panels were designed at a nominal level of -9dBFS from the Mic amp rather than -16dBFs of analogue 4000 panels.This was done to maximise the signal to noise on the A to D which doesn’t need 16dB headroom because of the 8dBu Mic limiter. The matrix attenuated incoming audio on the 4000 Panel Control Card by 7dB to compensate for level & reduce the noise at the same time.
We don’t do this for other Eclipse panels using coax because they have a digital limiter in those panels
So 4000 coax panels incoming audio is 7dB louder on Eclipse frames + the 2dB resulted by the MVX card which gives 9dB.
AES-6 panels which are of type 4212E or 4222E or 4224E need to have the Matrix input volume (gain) adjusted down by 9dB in ECS
We don’t do this for other Eclipse panels using coax because they have a digital limiter in those panels
So 4000 coax panels incoming audio is 7dB louder on Eclipse frames + the 2dB resulted by the MVX card which gives 9dB.
AES-6 panels which are of type 4212E or 4222E or 4224E need to have the Matrix input volume (gain) adjusted down by 9dB in ECS
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