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May 31st, 2016, 08:59 PM
#15
Senior Hostboard Member
Re: Crossover Help Needed With ANOTHER Pair of ALTECS
Thanks Earl! I've never heard of a "bode-plotter" but your explanation is very helpful -- i.e. from listening to the Model 14's with my current crossover configuration, I am certain that what they don't need is a boost at 2k! I won't be trying that version of the factory crossover....

Originally Posted by
Earl K
(
"Right-Click" ) the pic & open in a separate tab, to see it's full size .
The HF output ( ie; voltage-drive ) is displayed within the smaller window ( called the
"Bode-Plotter" ).
The cursor within that window is set to around 2K.
One can see that the 6uF variant of this network employs a ( restorative ) response peak at around 2K ( right near the x-over point ).
I'd need to see some raw measurements of the speaker before commenting on whether the peak is truly needed.
All you can do is try this variant and see if you like it .

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In fact, looking at the bode-plotter for the two Model 14 factory crossovers and Richard's custom crossover, the factory version I'm currently using (with the 10 uF capacitor) looks to have the flattest response--rising gradually in the highest frequencies which is probably fine given the fact that human hearing falls off at those frequencies....
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