New! MSW-821
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Special Features:
Cast aluminum frame
Vented dual magnet system
Magnetically shielded (90%)
Shallow mounting depth (2.3" ~ 58 mm) 3" (75mm) voice coil
Hexagonal shaped aluminum wire
Kevlar re-enforced lead wires

GENERAL INFORMATION
Nominal Power Handling (RMS)  P 175 W
Peak Power Handling   1,000 W
Nominal Impedance Z 8 W
Sensitivity 1W/1M   90 dB
Frequency Response   30 2,800 Hz
Resonant Frequency FS 30 Hz
Diameter
Depth
Cutout
Mounting Depth
  8.8" (224 mm)
2.6" (66 mm)
7.5" (191 mm
2.3" (58 mm)
VOICE COIL PARAMETERS
Voice Coil Diameter f 3" (75 mm)
Voice Coil Height   0.55" (14 mm)
Voice Coil Former   aluminum
Voice Coil Wire   hexagonal shaped aluminum
Number of Layers   2
DC Resistance RE 6.25 W
Voice Coil Inductance @ 1 kHz LBM 0.54 mH
MAGNET STRUCTURAL SYSTEM
Magnet Type   double ferrite
Magnet System   vented
Magnetic Gap Height HE 0.25" (6.2 mm)
Flux Density B 0.65 T
BL Product BXL 6.15 NA
Max. Linear Excursion Xmax ± 0.17" (4.33 mm)
WORKING PARAMETERS
Suspension Compliance CMS 1,255 m M / Newton
Mechanical Q QMS 2.45
Electrical Q QES 0.69
Total Q Q/T 0.50
Moving Mass MMS  23.5 g
Air Load VAS 80 L
Cone Material (DPC)   damped polymer composite
Effective Piston Area S 219 cm 2
Net Weight   3.3 lbs. (1.5 kg)

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Renaissance Audio Group 414 Harvard street   ~  Brookline, MA 02446 - USA ~ tel 617.277.6663 ~ fax 617.277.2415 email  info@renaudio.com
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