Haut parleur 46 cm Beyma 18P80/Nd
[18P80Nd-8] Avis/Critiques 
Key Features
Real 800 w AES power handling
Superb sensitivity: 100 dB
4" duo technology voice coil
Carbon fiber reinforced paper cone
Neodymium magnet
Technical Specifications
Nominal diameter 460 mm 18 in
Rated impedance 8 ohms
Minimum impedance 5.8 ohms
Power capacity* 800 w AES
Program power 1600 w
Sensitivity 100 dB 2.83v @ 1m @ 2p
Frequency range 25 - 4000 Hz
Recom. enclosure vol. 80 / 200 L | 2.8 / 7 ft.3
Voice coil diameter 100 mm 4 in
Magnetic assembly weight 4.62 kg 10.16 lb
BL factor 21.9 N/A
Moving mass 0.146 kg
Voice coil length 20 mm
Air gap height 12 mm
X damage (peak to peak) 52 mm
Thiele-Small Parameters**
Resonant frequency, fs 30 Hz
D.C. Voice coil resistance, Re 5.1 ohms
Mechanical Quality Factor, Qms 11.55
Electrical Quality Factor, Qes 0.29
Total Quality Factor, Qts 0.29
Equivalent Air Volume to Cms, Vas 411 L
Mechanical Compliance, Cms 193 µm/N
Mechanical Resistance, Rms 2.34 kg/s
Efficiency, ho (%) 3.7
Effective Surface Area, Sd (m2) 1225 cm²
Maximum Displacement, Xmax*** 7.5 mm
Displacement Volume, Vd 918 cm3
Voice Coil Inductance, Le @ 1 kHz 1.9 mH
Mounting Informations
Overall diameter 460 mm. 18.11 in.
Bolt circle diameter 438 mm. 17.24 in.
Baffle cutout diameter:
- Front mount 413 mm. 16.26 in.
- Rear mount 400 mm. 15.75 in.
Depth 211 mm. 7.91 in.
Volume displaced by driver 13 l 0.46 ft.3
Net weight 7 kg. 15.4 lb.
Shipping weight 8.5 kg. 18.7 lb.
Notes:
*The power capacity is determined according to AES2-1984 (r2003) standard.
Program power is defined as the transducers ability to handle normal music program material.
**T-S parameters are measured after an exercise period using a preconditioning power test.
***The Xmax is calculated as (Lvc - Hag)/2 + Hag/3.5, where Lvc is the voice coil length and Hag is the air gap height.
Graphique de mesure SPL vs Fréquence
Note: on axis frequency response measured with loudspeaker standing on infinite baffle in anechoic
chamber, 1w @ 1m.
Dimensions
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