Stereo 2-Way/Mono-3Way Crossover 223XL

INPUT:
Connectors: XLR
Type: Electronically balanced/unbalanced, RF filtered
Impedance: Balanced > 50 kΩ, unbalanced > 25 kΩ
Max Input Level: > +21 dBu balanced or unbalanced
CMRR: > 40 dB, typically > 50 dB at 1 kHz
OUTPUT:
Connectors: XLR
Type: Impedance-balanced/unbalanced, RF filtered
Impedance: Balanced 200 Ω, unbalanced 100 Ω
Max Output Level: > +21 dBu balanced/unbalanced into 2 kΩ
or greater
PERFORMANCE:
Bandwidth: 20 Hz to 20 kHz, +0/-0.5 dB
Frequency Response: < 3 Hz to > 90 kHz, +0/-3 dB
Signal-to-Noise: Ref: +4 dBu, 22 kHz measurement bandwidth
Stereo Mode: Mono Mode:
Low Output: > 94 dB > 94 dB
Mid Output: > 93 dB
High Output: > 92 dB > 92 dB
Dynamic Range: > 114 dB, unweighted, any output
THD+Noise: < 0.004% at +4 dBu, 1 kHz
< 0.04% at +20 dBu, 1 kHz
Interchannel Crosstalk: < -80 dB, 20 Hz to 20 kHz
CROSSOVER FREQUENCIES:
Stereo Mode:
Low/High: 45 to 960 Hz or 450 Hz to 9.6 kHz (x10
setting)
Mono Mode:
Low/Mid: 45 to 960 Hz or 450 Hz to 9.6 kHz (x10
setting)
Mid/High: 45 to 960 Hz or 450 Hz to 9.6 kHz (x10
setting)
Filter Type: Linkwitz-Riley, 24 dB/octave, state-variable

Here you find 26 models, 25 with images and 4 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from dbx Inc.; Waltham (MA)