Active crossover for 4343

[pyonc]

I sought your advice in this forum before on this, but let me turn to you again.
For bi-amplification, JBL 4343 recommends( in its original specification) an electronic network with 12-db/octave filter slope, such as 52-5140 crossover cards.
Now, as I can't find 52-5140 cards easily, I wonder if Ashly XR22E or any other active crossover can take its place.
Ashly XR22E is a two way stereo crossover with 12db/octave.
Currently I'm using JBL M552 with 24db/octave (like Ashly XR1001),
but want to try other active crossovers that provides the closest approximation of the 51-5140.
Any helpful opinion or advice would be highly appreciated.

[Ian Mackenzie]

I sought your advice in this forum before on this, but let me turn to you again.
For bi-amplification, JBL 4343 recommends( in its original specification) an electronic network with 12-db/octave filter slope, such as 52-5140 crossover cards.
Now, as I can't find 52-5140 cards easily, I wonder if Ashly XR22E or any other active crossover can take its place.
Ashly XR22E is a two way stereo crossover with 12db/octave.
Currently I'm using JBL M552 with 24db/octave (like Ashly XR1001),
but want to try other active crossovers that provides the closest approximation of the 51-5140.
Any helpful opinion or advice would be highly appreciated.

You will find it difficult to create the same voltage driver unless you have the means to build a diy active crossover or can afford a Pass Labs XVR1 .

The original cards spread the crossover points to something like 220 hz low pass and 340 high pass to minimise a hump in the response that otherwise ocurrs due to mutual coupling of the woofer and the 2121 mid cone.

Frankly I would not be stressing over this as it would be inconsenquential as far as the overall acoustic response in a domestic environment.

The stock 4343 is such that the Ashly is fine as is the M552. If you can find one the JBL 260 digital crossover or the Drive rack from DBX might provide some means of emulating the original voltage drives.

[pyonc]

You will find it difficult to create the same voltage driver unless you have the means to build a diy active crossover or can afford a Pass Labs XVR1 .

The original cards spread the crossover points to something like 220 hz low pass and 340 high pass to minimise a hump in the response that otherwise ocurrs due to mutual coupling of the woofer and the 2121 mid cone.

Frankly I would not be stressing over this as it would be inconsenquential as far as the overall acoustic response in a domestic environment.

The stock 4343 is such that the Ashly is fine as is the M552. If you can find one the JBL 260 digital crossover or the Drive rack from DBX might provide some means of emulating the original voltage drives.

Thanks much, Ian.
As I'm not so knowledgeable about this technical field of active crossover, I briefly thought this particular Ashly might be the closest crossover with its 12db/octave.
Do you think this digital crossovers also offer a good match with my vintage amps and pre-amp in the 1970s?
And except for this digital crossovers, could you recommend some decent two-way active crossovers that best match with 4343?
As you know, its LF crossover frequency is 300hz.