Цената е за два броя :
BMS 15N820

15N820 Specification
Application 2- or 3-way Systems
Nominal Impendance: Ohm 8
Power handling AES noise: W 900
Sensitivity (1 W / 1 m): dB 98
Frequency response: Hz 40 - 2500
Voice Coil Diameter: mm 101.6 (4")
Voice Coil Material: Cu
Voice Coil Winding Depth: mm 19
Magnet Gap Depth: mm 10
Basket: Cast Aluminum
Effect. diaphragm diameter D mm 335

Recommended reflex enclosure:
60 L / 50 Hz, -3 dB = 58 Hz, BRD = 140 mm / 183 mm long

15N820 Thiele-Small Parameters
Resonance Frequency: Fs Hz 39.2
DC Resistance: Re Ohm 5.7
Mechanical Q Factor: Qms 4.5
Electrical Q Factor: Qes 0.27
Total Quality Factor: Qts 0.26
Equivalent Volume: Vas L 159
Moving Mass: Mms kg 0.114
Mechanical Complience: Cms mm / N 0.144
BL Factor: BL Tesla m 24.2
Effective Piston Area: Sd m² 0.0880
Max. linear Excursion: Xmax mm +/- 4.5
Voice Coil Inductance: Le1k mH 0.81
Le10k mH 0.53

15820 Mounting Information
Overall Diameter: mm 388
Mounting Holes Diameter: mm 8 x (7 x 8)
Bolt Circle Diameter: mm 371
Baffle cut-out Diameter: mm 358
Overall depth: mm 184
Net Weight: kg 5.7