ACI Subwoofer Calibration - 20Hz to 200 Hz

Discussion in 'Speakers' started by Rich.S, Jan 6, 2004.

  1. Rich.S

    Rich.S Auditioning

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    I just recently purchased an ACI Force to go with my Hales Concept 2 main speakers. ACI includes a test CD with test tones from 15Hz to 200Hz to calibrate the sub in the room. They recommend calibrating at 70 dB. Using a Radio Shack Analog SPL (and using correction values) I am able to calibrate the in room response from a low of 65dB and a high of 75dB. I'm using 100 Hz and 20 Hz as reference points that are exactly at 70 Db. The SPL meter in on a tripod in my listening seat.

    My question is...how does this calibration compare to others out there? Should I be able to get a flatter response? I've tried about 10 different setups with various sub positions, crossovers, etc. and +-5 dB seems to be the best I can get.

    Thanks.
     
  2. Tim Ranger

    Tim Ranger Stunt Coordinator

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    +- 5db in room without EQ doesn't sounds pretty good to me. I bet you'll find that if you move the mic around it will all change. I think to do any better you're going to need to eq. I have a Titan in my two-channel setup and love it, but I've never bothered to try eq.
     

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