Motional Feedback 22ah567

[Marantz 0]

Hello,

 

I am working on a speaker based on the woofer and amplifier of the Philips MFB 22ah567. I would like to modify its filtering (active/phase lineair) except for the woofer which I would like to keep original. I used Dynaudio drivers for mid and high, which is already an improvement. However I believe that Philips let the basdriver go up all the way the 500 Hz. Then a 'squaker' was introduced which went up to approx 6.3 kHz. Is there anybody around who has been working on changing the ' weichen ' of this kind of speaker?

I would be very interested in aquiring some tips.

Best regards,

 

Rick