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Thread: Crossover Help Needed With ANOTHER Pair of ALTECS

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    Senior Hostboard Member voice of the theater's Avatar
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    Re: Crossover Help Needed With ANOTHER Pair of ALTECS

    Quote Originally Posted by Earl K View Post
    Here's the un-equalized response of the M14's horn-driver combo .

    One can see that it needs the mid-range suppressed by some 6 to 10db ( between 1-6K ) so that the HF ( above 6K ) is brought back into a more reasonable balance .

    2

    Thanks Earl and Bowtie!
    Model 14 x-overs.jpg
    Looking at Richard's photo of the three Model 14 factory crossover variations, it looks like the one on the far right has two solid core inductors whereas the other two variations have only one inductor (mine is the one on the far left). Am I seeing this right? The one on the right is the one that uses a 6 uF capacitor instead of the 10 uF that my version uses. Richard has provided a schematic for my version (the 10 uF version) and also for the 6 uF version. Is there anything in his schematic that indicates an extra inductor for the 6 uF version? (I can't read schematics!)
    Being of "Sound" Mind

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    Senior Hostboard Member Earl K's Avatar
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    Re: Crossover Help Needed With ANOTHER Pair of ALTECS

    Hi vott,

    The second coil ( shown as .667mh in your picture on the rightside ) is represented in this schematic ( as the .67mH coil ) within the HF leg of the network .

    It ( along with the values of the caps near it in the circuit ) is partly responsible for that peaking seen at 2K (within the Bode Plotter window).

    2


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