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setting up gain structure with Audyssey based AVRs and pro amps

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  • setting up gain structure with Audyssey based AVRs and pro amps

    What's considered the best practice for setting up gain structure ?

    I understand that the ideal is to have the AVR and the amp to clip at the same time. What I am not clear about though is how to get there.

    My AVR is Denon 4311 and I use inuke3000DSP to power SS-18.2.
    I have the following controls:
    1. level trim control on the AVR
    2. global gain control on the amp
    3. level trim control on the amp.

    Here's what I do:
    1. Set sub level on the AVR to 0db.
    2. disconnect the subs, run a test signal and adjust volume trim and/or gain controls on the amp until the level LEDs get into the "red" territory.

    This in theory should satisfy the requirements. One thing that throws me off is whenever I run Audyssey after that it finds that the sub level is hot and i have to trim id down from whatever settings I thought were optimal.

    can you give me any pointers on how to do it properly? Also, when should I use the global gain on the amp? Should I leave it at 0 if I am able to drive the amp into clipping without it (even if i have to leave the trim level wide open to do it)?

    thank you

  • #2
    zheka - this is probably the best thread online for understanding gain structure and best practices. Very informative and often referenced.

    Gain Structure for Home Theater Getting the Most from Pro Audio Equipment in Your System Part 2: Is a Pro Audio Gain Structuring Procedure Relevant to Home Theater? Part 3: Consumer vs. Professional Signal Levels and Relevant Noise Floors Part 4: Why Gratuitous Signal Boosting Won’t...

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    • #3
      Originally posted by tesseract
      zheka - this is probably the best thread online for understanding gain structure and best practices. Very informative and often referenced.

      http://www.hometheatershack.com/foru...ur-system.html
      Thank you. I am familiar with this one, it has a wealth of information but I personally had a difficult time extracting subwoofer specific bits and at the end not at all sure I got it right. Besides it does not address the issue with Audyssey calibration and sub volume level.
      I hoped that users here who've done it countless times may give me some easy to follow instructions. If not, I can probably ask Wayne on HTS forum.

      thanks again

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