B&C 21DS115-4

  • Sale
  • R 9,199.00
  • Regular price R 12,999.00
Tax included.


  • THE B&C 21DS115 IS AN VERY HIGH POWER 21" WOOFER THAT HANDLES 1,700 WATTS AES STANDARD & 3,400 WATTS PROGRAM
  • NEWLY DESIGNED LONGER 4 LAYER ALUMINUM 4.5" SPLIT WINDING VOICE COIL THAT RESULTS IN MORE ENERGY IN THE GAP, HIGHER SPL & LOWER DISTORTION
  • VERY HIGH EFFICIENCY OF 99DB SPL & SUPER HIGH 15.0MM XMAX
  • THE HIGHEST BL FACTOR OF 40.8T-M OF ANY WOOFER WE CARRY FOR A STRONG TIGHT CHEST POUNDING INTENSE DEEP BASS SOUND
  • NEODYMIUM MAGNET WEIGHS ONLY 32.63 LBS., ALUMINUM DEMODULATION RING & VENTILATED VOICE COIL GAP FOR LOWER POWER COMPRESSION
  • B&C 21DS115 21"  WOOFER IS OPTIMIZED FOR EXTREMELY HIGH OUTPUT SUBWOOFER SYSTEMS IN CONCERT, SOUND REINFORCEMENT SYSTEMS, THEATER, ETC.

SPECIFICATIONS

Nominal Basket Diameter

21" / 530mm

Impedance

4 ohms

RMS Power Rating

1,700 Watts

Program Power  3,400 Watts  

Frequency Response

30Hz - 1.0kHz

Sensitivity (1W/1m)

99dB

Voice Coil Diameter

4.5" / 116mm

Winding Material Aluminum
Former Material Glass Fibre
Winding Depth 1.42" / 36mm
Magnetic Gap Depth .55" / 14mm
X Damage (peak to peak) 60 mm
Flux Density .8T

MOUNTING INFORMATION

Overall Diameter 21.54" / 547mm
Bolt Circle Diameter 20.7" / 527mm
Baffle Cutout Diameter 20" / 508mm
Depth 10.04" / 255mm
Flange & Gasket Thickness .51" / 13mm
No. Of Mounting Holes 8
Net Weight 32.63 lbs./ 14.8 kg.
Shipping Weight 37.92 lbs./ 17.2 kg.

MATERIALS

Basket Cast Aluminum
Cone Paper
Cone Shape Radial
Spider Double Silicone
Surround Shape Triple Roll
Pole Design T-Pole
Demodulation Ring Aluminum
Magnet Neodymium

  THIELE-SMALL PARAMETERS

Resonant Frequency (fs)

30 Hz
Impedance (Re) 5.1 ohms
Electrical Factor (Qes) .24
Mechanical Q (Qms) 10.0
Total Q (Qts) .23
Compliance Equiv. Vol. (Vas) 269 Liters/9.5cu. ft.
Voice Coil Overhang (Xmax) 15.0mm
Moving Mmass (Mms) 407 Grams
Reference Efficiency 3%
Surface Area of Cone .1680 m2
BL Factor 40.8 T-M
Coil Inductance (Le) 4.6mH
FREQUENCY RESPONSE