My question:
I run an active 3way speaker setup.
Roon does all speaker EQ and crossover.
Signal path is:
RPI USB > Ropieee > Roon > Motu Mk5 lite > 3x stereo amplifiers.
I have noticed that applying negative or positive gain on any procedural fader alters all routed/mixed channels by the same amount (Even if you have discretely routed signal to particular channels). So effectively each procedural fader acts as headroom master gain, rather than individual channel gain which is what I would expect.
This fader:
For instance if I apply -10db of signal on channel 5/6 assigned fader, this also removes 10db on the remaining channels in the mix, I.e. 1/2, 3/4. This seems very odd indeed, (especially if you are dealing in negative gain) as I have no ‘easy’ way to level compensate, other than applying EQ in ‘positive gain’ and using headroom management to compensate, or of course use a mix of amplifier gain and reverse application of EQ to level control channels.
It seems counter intuitive for procedural faders to act as master faders, instead of individual faders for the channel they are assigned, especially in the context of speaker crossovers/management.
My thought is, once Procedural EQ has been applied to a particular channel say 1/2, its applicable fader should be discrete to those channels, and not impact remaining channels in the mix. Headroom management can then be used to prevent clipping. This is more inline with pro interfaces or DSP units, albeit most modern DSP’s use floating point to manage digital gain.
Channel 1/2
Channel 3/4
Channel 5/6. You can see a reduction of 12db is applied to the channel.
This is my de250 compression driver.
This reduction appears as a level reduction of 12db across channels 1-4, visible on my Motu signal levels. This is not right. Procedural fader control should be applied to the routed/mix channels only.