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Advice needed: "Old school" EQ; more trouble than it's worth?

Discussion in 'Audio & Video' started by BlackNBlu, Nov 30, 2024.

  1. Nov 30, 2024 at 5:33 PM
    #1
    BlackNBlu

    BlackNBlu [OP] Justa Member

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    I might be making a mountain out of a molehill here, not sure, that's why I'm posting.
    It may also be a case of I'm not understanding the "summing" function of the LC7i and its capabilities.
    The picture will tell the story somewhat, and I'll fill in the blanks:

    Signal order is:
    Speaker outputs from JBL amp-> LOC-> EQ-> 5 channel amp.

    Problem?
    Audiocontrol LC7i has 3 pairs of RCA outputs. Each representing a portion of the audio spectrum, with channel 3 being bass.
    Clarion EQS746 equalizer has 1 pair of RCA inputs, not including AUX. (and 3 pairs of outputs)

    Using either a RCA combiner box or 3 to 1 pair RCA leads, is it possible to simply combine the 3 pairs of outputs to the single pair of inputs? Physically possible, yes. Electrically feasible, that's the question. (A case of "Just because you can..." you know the rest.)

    Any insights would be appreciated.

    INs and OUTs.jpg

    A couple pics in another thread here: https://www.tundras.com/threads/manual-equalizer-install.150605/
     
  2. Dec 1, 2024 at 8:26 AM
    #2
    BlackNBlu

    BlackNBlu [OP] Justa Member

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    I'll listen to thoughts, ideas, guesses, wild speculation, conspiracy theories.....
    "No, don't do that. You'll open a rift in the spacetime continuum that will end life on earth as we know it."

    Or, it'll let the magic smoke out.
     
  3. Dec 2, 2024 at 6:34 PM
    #3
    BlackNBlu

    BlackNBlu [OP] Justa Member

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    Changed up the thread title a bit.
    Looking for the audio gurus to check in.

    I'll wing it if I have to but I'd rather not smoke anything if I can avoid it.
     
  4. Dec 2, 2024 at 6:45 PM
    #4
    eddiefromcali

    eddiefromcali New Member

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    Grab a L from lc7i main out and a R from Chan 2?
     
  5. Dec 2, 2024 at 6:54 PM
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    BlackNBlu

    BlackNBlu [OP] Justa Member

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    OK. That gives me everything BUT bass.

    Then what do I do with CH3 output?
    Or is this where the SUM function of the LC7i comes in and I won't use CH3 output?

    I suppose I could bypass the EQ and run the CH3 output direct to the SUB input on the amp....
    I'd lose any sub control from the EQ.
    I'd still have sub level control either from the LC7i or the amp.
     
    Last edited: Dec 2, 2024
  6. Dec 2, 2024 at 7:46 PM
    #6
    eddiefromcali

    eddiefromcali New Member

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    Your lc7i main out can be a sum of other inputs, so you could sum all (2) inputs to that and feed your eq main. Chan 3 on the lc7i is sub out which comes from your rear input.

    Open the lc7i and you shoukd see the selector switches to choose which inputs get summed to your main.
     
    KNABORES likes this.
  7. Dec 3, 2024 at 5:26 AM
    #7
    BlackNBlu

    BlackNBlu [OP] Justa Member

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    @eddiefromcali

    To confirm:

    1) I use all 3 speaker level inputs so that I have a full range audio signal coming into the LC7i.
    2) Connect internal SUM jumpers on both CH2 and CH3 to the "Summed" position. (Both "Connected to Main Channel" LEDs should be lit when I power up.)
    3) I will then have a full range output from the MAIN/CH1 to go to the EQ MAIN IN.
    4) RCA outputs CH2 and CH3 of the LC7i will not be used/connected.

    Sound right?
     
    KNABORES likes this.
  8. Dec 3, 2024 at 2:49 PM
    #8
    eddiefromcali

    eddiefromcali New Member

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    Correct.
     
    BlackNBlu[QUOTED][OP] likes this.

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