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Beyma 15XA38Nd - 15" 350W 8/16 Ohm
This 15" coaxial loudspeaker is intended for the most demanding professional applications. Its low frequency unit features a 4" (100 mm) edgewound aluminium ribbon voice coil capable of handle 350 w AES. This bass unit has been optimized in order to fit in with the most compact bass-reflex systems. The high frequency unit uses a 2.8" (72.2 mm) aluminium ribbon voice coil and a composite structure diaphragm, that is to say, a titanium dome and polyester surround combination. All these components give as a result a coherent and extended frequency response with low distortion that ranges from 25 Hz up to 20 kHz. Moreover, the use of a common neodymium magnet system for both units reduces the weight to 6.8 kg.
Key features
- 15" bass loudspeaker and 2" exit compression driver combination
- Excellent power handling: 350 w AES (L.F. unit) and 90 w AES (H.F. unit)
- Extended and linear frequency response (25-20000 Hz)
- High sensitivity: 99 dB (L.F. unit) and 105 dB (H.F. unit)
- Low weight (common neodymium magnet system for both units)
- Bass loudspeaker designed for compact bass-reflex cabinets
Key features
- 15" bass loudspeaker and 2" exit compression driver combination
- Excellent power handling: 350 w AES (L.F. unit) and 90 w AES (H.F. unit)
- Extended and linear frequency response (25-20000 Hz)
- High sensitivity: 99 dB (L.F. unit) and 105 dB (H.F. unit)
- Low weight (common neodymium magnet system for both units)
- Bass loudspeaker designed for compact bass-reflex cabinets
Technical Specifications
- L.F. UNIT -
- Nominal diameter - 380 mm. 15 in.
- Rated impedance - 8 ohms.
- Minimum impedance - 7.6 ohms.
- Power capacity* - 350 w AES
- Program Power - 700 w
- Sensitivity - 99 dB 2.83v @ 1m @ 2p
- Frequency range - 25-3500 Hz
- Recom. enclosure vol. - 60 / 180 l 2.14 / 6.35 ft.3
- Voice coil diameter - 100 mm. 4 in.
- Magnetic assembly weight - 4.2 kg. 9.24 lb.
- BL factor - 18.2 N/A
- Moving mass - 0.072 kg.
- Voice coil length - 16 mm.
- Air gap height - 9 mm.
- X damage - 28 mm.
- H.F. UNIT -
- Rated impedance - 16 ohms.
- Minimum impedance - 13.5 ohms.@ 3.5 kHz
- Power capacity - 90 w AES above 1 kHz
- Frequency range - 0.5 - 20 kHz
- Sensitivity 1w @ 1m - 105 dB
- Voice coil diameter - 72.2 mm. 2.87 in.
- Flux density - 1.6 T
- BL factor - 15.3 N/A
- Dispersion - 80° conical
Thiele Small Parameters
- Resonant frequency, fs - 33 Hz
- D.C. Voice coil resistance, Re - 6.8 ohms.
- Mechanical Quality Factor, Qms - 7.50
- Electrical Quality Factor, Qes - 0.30
- Total Quality Factor, Qts - 0.29
- Equivalent Air Volume to Cms, Vas - 359 l
- Mechanical Compliance, Cms - 326 mm / N
- Mechanical Resistance, Rms - 2 kg / s
- Efficiency, ho (%) - 4
- Effective Surface Area, Sd (m2) - 0.088 m2
- Maximum Displacement, Xmax - 4 mm
- Displacement Volume, Vd - 350 cm3
- Voice Coil Inductance, Le @ 1 kHz - 1.6 mH
Materials of construction
L.f. Unit
- Basket: Die cast aluminium
- Cone: Paper
- Surround: Plasticised cloth
- Voice coil: Edgewound aluminium ribbon
- Magnet: Neodymium
H.f. Unit
- Dome: Titanium
- Surround: Polyester
- Voice coil: Edgewound aluminium ribbon
- Voice coil former: Kapton
Mounting Information
- Overall diameter - 388 mm. 15.28 in.
- Bolt circle diameter - 370 mm. 14.56 in.
- Baffle cutout diameter: -
- - Front mount - 352 mm. 13.85 in.
- - Rear mount - 352 mm. 13.85 in.
- Depth - 181 mm. 7.13 in.
- Volume displaced by driver - 7 l 0.25 ft.3
- Net weight - 6.8 kg. 14.96 lb.
- Shipping weight - 7.4 kg. 16.28 lb.
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