B & C  PROFESSIONAL COMPONENTS

21iPAL - 21" EXTREME POWER WOOFER 

VERY LARGE 6" VOICE COIL, ALUMINUM DEMODULATION RING, 5,000 WATTS POWER, LIGHT NEO MAGNET W/ 22.0MM XMAX!

21iPAL

New Upgrade Model Coming 2023

SPEAKER MODEL

21iPAL

SPECIFICATIONS

Nominal Basket Diameter

21" / 530mm

Impedance

1 ohm

RMS Power Rating

2,500 Watts

Program Power  5,000 Watts  

Frequency Response

37Hz - 1.0kHz

Sensitivity (1W/1m)

99dB

Voice Coil Diameter

6" / 152.4mm

Winding Depth 1.9" / 48mm
Magnetic Gap Depth .7" / 18mm
Flux Density 1.35T

RECOMMENDED CABINET SPECIFICATIONS
Cabinet Volume 6.8 cu. ft. / 192.6 Liters
Inside Cabinet Dimensions 22" wide x 26" height  x 20.5" deep
Port Size 22" wide x 2.5" height  x 13.875" deep
Tuning Frequency 37Hz

MOUNTING INFORMATION
Overall Diameter 21.5" / 547mm
Bolt Circle Diameter 20.7" / 527mm
Baffle Cutout Diameter 20" / 508mm
Depth 10.59" / 269mm
Flange & Gasket Thickness .51" / 13mm
No. Of Mounting Holes 8
Net Weight 48.5 lbs./ 22 kg.
Shipping Weight 54 lbs./ 24.5 kg.

MATERIALS
Basket Cast Aluminum
Cone Paper
Cone Treatment Waterproof Front & Back
Cone Shape Radial
Spider Double Silicone
Surround Shape Triple Roll
Former Glass Fiber
Pole Design T-Pole
Winding Depth Aluminum
Magnet Neodymium

  THIELE-SMALL PARAMETERS

Resonant Frequency (fs)

 37 Hz
Impedance (Re) .7 ohms
Electrical Factor (Qes) .22
Mechanical Q (Qms) 4.9
Total Q (Qts) .21
Compliance Equiv. Vol. (Vas) 155 Liters/5.47cu. ft.
Voice Coil Overhang (Xmax) 22.0mm
Reference Efficiency 3.2%
Surface Area of Cone .1680 m2
Diaphragm Mass (Mms) 487 Grams
BL Factor 19.1 T-M
Coil Inductance (Le) .5mH
FREQUENCY RESPONSE IN BASS REFLEX CABINET
CABINET SPECS

  • Enclosure Type - Bass Reflex/Ported

  • Cabinet Size - 6.8 cu. ft. / 192.6 Liters

  • Tuning - 37Hz

  • Slot Port - 22 Wide x 2.5" Height

  • Port Depth - 13.875"
FREQUENCY RESPONSE
B&C 21iPal Frequency
IMPEDANCE CURVE
B&C 21iPal Impedance

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