Decibel loss using groups?

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This topic contains 6 replies, has 3 voices, and was last updated by Profile photo of Thurdeye Thurdeye 4 years, 5 months ago.

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  • #59003
    Profile photo of Thurdeye
    Thurdeye
    Participant

    Hey everyone, I run the board for a podcast network and I send all the mics to one group and all the line inputs to another group, then send the groups to LR. I notice that the groups suffer a 3-5 db loss and I’m not sure why. I have to use some compression gain to get it back to normal, which is fine, I just can’t figure out if it’s something I’m doing. Even if I take out the groups and just send to LR there’s still a db loss.

    any ideas?

    I attached a picture where I sent a steady tone to ch. 18 and you can see all the mixes/groups have a lower output.

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    #59005
    Profile photo of [XAP]Bob
    [XAP]Bob
    Participant

    DCAs?

    #59007
    Profile photo of Thurdeye
    Thurdeye
    Participant

    No I don’t use DCAs, should I be? I use groups so I can set different compression on the mics vs the line.

    #59008
    Profile photo of [XAP]Bob
    [XAP]Bob
    Participant

    No, but they are an obvious first thing to check.

    #59009
    Profile photo of Thurdeye
    Thurdeye
    Participant

    I did a test with the DCA and same problem. I had to raise the fader 5db to get the same output from the original channel.

    #59012
    Profile photo of Mike Storm
    Mike Storm
    Participant

    PAN law?
    You’ll probably find the mono sum of L and R in a group equals the level of the mono source. A stereo source would display the same meter reading as the group I suspect.

    #59014
    Profile photo of Thurdeye
    Thurdeye
    Participant

    Ahh ok, thanks, that makes sense. So that would apply to the microphones too I assume?

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