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In Reply to: RE: Danny does the LRS posted by emailtim on April 21, 2021 at 13:36:09
I suspect it will be awhile.
Danny's altered the network to a parallel configuration and the components are physically much larger and will require an external enclosure.
Also, his measurement technique of replacing each driver with a resistor to measure the other is flawed. In normal configuration, there's a mechanical crossover between both drivers that contributes to the final result.
In his testing case he's taking away that mechanical crossover. So, the individual plots he's showing for the stock configuration are not correct. And actually not correct for the revised the setup either.....but you just don't need a resistor to fake the other portion of the network
Edits: 04/27/21Follow Ups:
His uncorrected measurement looks very close to ASR's measurement from 200Hz up.
His aggregate corrected measurement (assuming no resistors) doesn't look bad.
My point being that (in this case) operating the drivers separately is not the same thing as in a speaker that has separate drivers not occupying the same membrane. :)
There's a certain amount of cross-contamination (or IM) that's inherent to this arrangement. A simple summation of the two individual responses does not equal the total system response.....as it would with most other speakers.
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