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B&C Speakers

21SW115-4 B AND C 21" Professional Neodymium Subwoofer 4 Ohm NEW

21SW115-4 B AND C 21" Professional Neodymium Subwoofer 4 Ohm NEW

$799.00
$799.00
Sale Sold out
BRAND NEW

21SW115-4 B AND C

21" Professional Neodymium Subwoofer 4 Ohm

  • The B&C 21SW115-4 is an advanced, lightweight subwoofer driver featuring 1,700 watts RMS power handling, a 1.34" long/4.5" diameter copper voice coil with very high thermal capability, and a ventilated neodymium magnet assembly that provides low power compression. An aluminum demodulation ring fitted to the 21SW115-4's pole piece reduces distortion.
  • Lightweight but powerful FEA-optimized neodymium magnet
  • Extremely high BL factor and Xmax for outstanding LF output
  • 14 mm Xmax, 60 mm peak-to-peak excursion before damage
  • 4.5" split winding copper voice coil on fiberglass former
  • Ventilated voice coil gap reduces power compression
  • Aluminum demodulation ring on pole piece reduces distortion
  • Double silicone spider
  • Shape Cylindrical
  • Product type Cone driver
  • Dimensional category 21 inch
  • Front Shape Cylindrical
  • Magnet type Neodymium
  • Basket material Aluminum
  • Nominal impedance 4 ohm
  • Zmin 4.2 ohm
  • Nominal power handling 1700 W
  • Max power handling 3400 W
  • Sensitivity 97 dB
  • Frequency response 33-1000 Hz
  • Voice coil diameter 4.5 inch
  • External diameter 547 mm
  • Mounting diameter 503 mm
  • Depth after front 235 mm
  • Front thickness 14 mm
  • Fs 33 Hz
  • Re 3.6 ohm
  • Qes 0.37
  • Qms 7.7
  • Qts 0.36
  • Vas 278 L
  • Sd 1680 cm²
  • Efficiency 2.6 %
  • Xmax 14 mm
  • Xvar 15 mm
  • Mms 335 gr
  • BL 24.8 T.m
  • Le 1.7 mH
  • EBP 89
  • Demodulation ring Yes
  • Form suspension Triple roll
  • Form membrane Radial
  • Spider Double
  • Spider material Silicone polycotton
  • Recommended load 250 L (tuned ar 32 Hz)

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