Customer Service: 01308 898 763
  • Features:
    The BM2500.4 is designed for use in two way nearfield studio monitors where accuracy and realism are essential.
  • Benefits:
    The BM2500.4 uses a massive magnet with a symmetrical field, extended pole and exceptionally long voice coil for maximum linearity. The cone, linen surround and dome are critically matched and doped to ensure very low midband colouration. The result is analytical sound quality with a stunning dynamic range.
Specifications
  • Model Number: BM2500.4
  • Nominal Diameter (mm): 250
  • Power Capacity (Watt AES): 200
  • Sensitivity (dB/watt/m): 93
  • Frequency Range (Hz): 25-2000
  • Impedance (Ohms): 8 or 16
  • BL Factor: 15.5
  • Voice Coil Diameter (mm): 75
  • Voice Coil Material: Copper
  • Maximum Excursion (mm): 25 (before damage)
  • Magnet Assembly Weight (Kg): 8.1
  • Effective Moving Mass (Kg): 0.054
  • Compliance (M/N): 0.00023
  • Volume Displaced (litres): 2
  • Connection: Metal Push Terminals
  • Chassis: Diecast Aluminum
Mounting Information
Parameter Measure Unit
Overall Diameter 285 mm
Mounting Bolt Circle Diameter 268 mm
Number and Size of Bolts 4 M5
Baffle Cutout Diameter 253 mm front mount
Baffle Cutout Diameter 245 mm rear mount
Depth 111.5 mm below front flange
Depth 121 mm total depth
Weight 8.65 Kg

BM2500.4_Line

Response Curve

BM2500.4_Resp

Thiele-Small Parameters
Parameter Measure Unit
Fs 45 Hz
Re 4.8 Ohms
Qa 2.43
Qe 0.30
Qt 0.27
Vas 37 litres
Xmax ±8 mm
Sd 337 cm²
Vd 269 cm³
Le 0.9 mH
Suggested Enclosures
Volume(litres) Vent Diameters(cm) Vent Length(cm) System Q -3db freq(Hz)
20 7.5 9 7 60
32 7.5 11 7 50
45 7.5 13 7 40

Factsheet PDF

pdf

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