Haut-parleur Beyma 15KX
[15KX-8+8] Avis/Critiques

This dual loudspeaker incorporates a 15” bass transducer, featuring a 3” voice coil diameter, edgewound aluminium ribbon wire, and a concentrically mounted 2” compression driver into an integrated voice coil gap magnet system. This design achieves high efficiency, smooth frequency response, low distortion, reduces phasing problems in the crossover region, and simplifies enclosure design.

Key features :
Exceptional power handling: 300 w AES (low frequencies) and 100 w AES (high frequencies)
Combination of a 15" bass loudspeaker and a 2" exit compression driver
L.F. unit: 3" (77 mm) edgewound aluminium ribbon voice coil
H.F. unit: 2.8" (72.2 mm) edgewound aluminium ribbon voice coil
Titanium diaphragm compression driver
Low weight due to the common magnet system for both units
Coherent response
Bass loudspeaker designed for the use in compact bass-reflex cabinets

Technical specifications :

L.F. UNIT
Nominal diameter 380 mm. 15 in.
Rated impedance 8 ohms.
Minimum impedance 7.3 ohms.
Power capacity* 300 w AES
Program Power 600 w
Sensitivity 99 dB 2.83v @ 1m @ 2

Frequency range 25-3000 Hz
Recom. enclosure vol. 60 / 150 l 2.14 / 5.59 ft.3
Voice coil diameter 77 mm. 3 in.
Magnetic assembly weight 6.4 kg. 14.11 lb.
BL factor 14.5 N/A
Moving mass 0.070 kg.
Voice coil length 13 mm.
Air gap height 8 mm.
X damage 28 mm.

H.F. UNIT
Rated impedance 8 ohms.
Minimum impedance 6.5 ohms @ 1kHz
Power capacity 100 w AES
Frequency range 800 - 17000 Hz
Sensitivity 1w @ 1m 105 dB
Voice coil diameter 72.2 mm. 2.8 in.
Flux density 1.4 T
BL factor 7.5 N/A
Dispersion 90°

Thiel and small parameters :
Resonant Frequency, fs 45 Hz
D.C. Voice Coil Resistance, Re 5.68 ohms.
Mechanical Quality Factor, Qms 11.4
Electrical Quality Factor, Qes 0.519
Total Quality Factor, Qts 0.496
Equivalent Air Volume to Cms, Vas 203 l
Mechanical Compliance, Cms 188.4 μm/N
Mechanical Resistance, Rms 1.69 kg/s
Efficiency, ηo (%) 3.18
Effective Surface Area, Sd (m2) 0.088 m2
Maximum Displacement, Xmax 3.5 mm.
Displacement Volume, Vd 300 cm.3
Voice Coil Inductance, Le@ 1kHz 1 mH

Materials :

L.F. UNIT
Basket: Cast aluminium
Cone: Paper
Surround: Plasticised cloth
Voice coil: Edgewound aluminium ribbon
Magnet: Ferrite

H.F. UNIT
Diaphragm: Titanium
Voice coil: Edgewound aluminium ribbon
Voice coil former: Kapton

Mounting informations :
Overall diameter 388 mm. 15.28 in.
Bolt circle diameter 370 mm. 14.57 in.
Baffle cutout diameter: Front mount 352 mm. 13.85 in. / Rear mount 355 mm. 13.98 in.
Depth 180 mm. 7 in.
Volume displaced by driver 7 l 0.25 ft.3
Net weight 8.25 kg. 18.19 lb.
Shipping weight 9.25 kg. 20.4 lb.