- 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 | |