I use the wrong one "for many years in my Hi-Fi Systm
Although advises 1.2 kHz cutoff 18 dB / oct, I cut 600 Hz 24 dB / oct active filtration.
Crossover Behring, ROTEL amps.
I have couple with two lanes in FOSTEX 38 cms.

A small and inexpensive as possible amlioration: Open the back and brush the "shell" Blackson. While waiting for the Schager.

SOUNDS

Monte enough to do without tweeter.
Sound without burrs.

OVERALL OPINION

Fidler serve me for many years in Hi-Fi.
Excellent qualitprix.
CAUTION: Do not weld on the legs directemnt too fragile because of their rubber mounts that do not like this treatment!