Customer Service: 01308 898 763
  • Features:
    • Coated fabric single piece Dome/surround
    • FEA Designed Ferrite Magnet System
    • Nomex/Kapton Voice Coil
    • Low distortion
    • Wide dispersion
  • Benefits:

    The VM527 is a 2" (52mm) soft midrange dome unit which has been designed for a smooth extended response with minimal colouration and low distortion over the critical midband frequencies.

    The coated one piece fabric dome/surround is coupled with a lightweight Kapton/Nomex, single layer, round wire copper voice coil for accurate transient response. An a FEA designed magnet system ensures linear coil movement even at high power levels.

    The magnet system develops high magnetic flux density due to its precise gap clearance enabling excellent heat dissipation for high power handling and efficiency.

    Wide dispersion is controlled by the short, optimally angled front mounted horn flare which also incorporates the threaded fixing points for rear mounting.

    The termination braids are hidden inside the unit and are not visible, connection is by 6.4mm (0.25") spade terminals allowing soldering or push on receptacles. The entire dome/coil assembly is built onto a replaceable ring that accurately self locates so allowing easy field replacement.

  • Model Number: VM527
  • Nominal Diameter (mm): 140
  • Power Capacity (Watt AES): 75
  • Sensitivity (dB/watt/m): 91
  • Frequency Range (Hz): 500-4500
  • Impedance (Ohms): 8
  • Voice Coil Diameter (mm): 52
  • Voice Coil Material: Copper
  • Suspension: Single
  • Cone Material: Coated Fabric
  • Surround: Coated Fabric
  • Maximum Excursion (mm):  2 (before damage)
  • Magnet: Ferrite
  • Magnet Assembly Weight (Kg): 1.65
  • Connection: 6.4mm solder terminals
  • Chassis: Machined Aluminium
Mounting Information
Parameter Measure Unit
Overall Diameter 140 mm
Mounting Bolt Circle Diameter 124.5 mm
Number and Size of Bolts 4 M5
Baffle Cutout Diameter 109 mm, rear mount
Depth of Baffle required 18 mm
Depth 58 mm, total depth
Weight  2.2 Kg

Response Curve

Thiele-Small Parameters
Parameter Measure Unit
Fs 502 Hz
Re 5.5 Ohms
Qms n/a
Qes n/a
Qts n/a
Cms n/a mm/N
Mms n/a grams
Bl n/a N/A
VAS n/a litres
Sd 28.27  cm²
Vd 2.827 cm³
Le n/a mH
Xmax ±1 mm

T&S Parameters measured in free space after a preconditioning period

Factsheet PDF


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