Recent content by Dan Twomey

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    Applying Filters in an Active System

    You are correct. I can EQ the four analog outputs using my two step method. I can then do a full range sweep and do a final EQ on the left and right inputs. Regards, Dan
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    Applying Filters in an Active System

    The 'two step' method at the crosser point seems to work well. Regards, Dan
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    Applying Filters in an Active System

    Or I could "Match Response to Target" twice. Once with the range 20 to 2500 and the second time 2500 to 20000. Saving the coefficients separately? Regards, Dan
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    Applying Filters in an Active System

    I converted my two-way speakers to active with a miniDSP product. I can do a frequency sweep and easily generate a set of filters with AutoEQ. Now I'm trying to decide how to effectively separate the LP and HP filters into two separate coefficients files so I can apply them in my MiniDSP...
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    My Driver Time Alignment Results

    Check out the links I posted above. I especially liked the YouTube video. Regards, Dan
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    Single-Point Digital Acoustic Correction - David Brancato

    Has anyone else seen this Youtube tutorial on Single-Point Digital Acoustic Correction Using REW and rePhase P1 by David Brancato? I found it very informative and quite well done. Regards, Dan
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    My Driver Time Alignment Results

    As far as I know I achieved my one very small goal here. Making sure my woofer and tweeter were time aligned. Are you suggesting I missed something? Regards, Dan
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    My Driver Time Alignment Results

    There are two tutorials that guided me through this process. One was the article on the MiniDSP website titled Time-Alignment The second tutorial was a Youtube video I found quite helpful as well. Time Alingment for Active Crossovers As far as I know I followed the above instructions to the...
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    REW Graph Features

    I find the bars outlining 'sub bass', 'bass', etc. above the graph attractive but can't figure out how to enable them. Anyone's thoughts? Regards, Dan
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    Check phase matching

    Before I 'progress' further I'm going to take a brief side trip and check the time alignment of my drivers as explained on MiniDSP's website here. Time Alignment Regards, Dan
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    Check phase matching

    After taking the summer off to do other things I'm back to tinkering with my active two-way speakers. The furniture and speaker positions are dictated by room layout so the measurements are 'reflected' in that. In the near future I'm going to post a basic set (Right, Left, Right+Left) of room...
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    Check phase matching

    Attached here is an MDAT that tests two things. First is a basic sweep of left and right speakers. Second is the same basic sweep with the tweeters with inverted polarity. The final sweeps are the left and right with -5db on the tweeters. I was trying the -5db to see if it reduced the number of...
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    Check phase matching

    I could add more smoothing?
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    Check phase matching

    I have tried Woofer LR4/Tweeter LR2 with some 'success'. There's a paradox at play here. The more I learn, the less I know. Regards, Dan
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    Check phase matching

    After following the instructions on the MiniDSP website I came up with the following. Two way active speaker with both crossovers being LR4 with a crossover at 2500Hz. It appears that inverting the polarity of the tweeter is the best option? Regards, Dan
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