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APPLICATION:
• Ideal for two-way and multi-way (line arrays) enclosure designs. Also suitable for vented or double band-pass subwoofers.
81FIND
SPECS PDF
DRAWING PDF
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FERRITE MID-WOOFER
Ordering code: 81FIND-238
CONT. POWER
SENS.
Fs
Freq. Range
VC Dia.
IN-OUT WOUND
VC Wire
Cone /
Surround
Magnet
Type
500 WATTS
96 dB
89 Hz
60-
4,500 Hz
2.0"
OUTSIDE
CCAW
PAPER
FABRIC
FERRITE
The 81FIND is a high efficiency, (96 dB 1watt / 1 meter) 8-inch woofer with linear frequency response characteristics, good power handling capability while generating low harmonic distortion artifacts. The 81FIND uses a lightweight glass-fiber loaded cone assembly along with a high excursion M-roll surround. This combination provides a lightweight, yet strong, piston.
Magnetic Circuit
REDCATT engineers have developed a ferrite based magnetic circuit, capable of delivering the highest level of performance, providing a consistent, high integrity magnetic flux gap, ultra-low distortion characteristic and high-efficiency cooling system. The metal parts are extensively coated to provide the maximum weather protection.
GENERAL SPECIFICATIONS:
Nominal Diameter
200 mm (8 in.)
Rated Impedance
8 ohm
Power Handling
AES Power
250 watts
PROGRAM Power
500 watts
PEAK Power
1000 watts
Power Compression
@ -10dB
0.9 dB
@ 0dB
2.0 dB
@ Max. Power
3.1 dB
Max. Recommended X-OVER Freq.
3,500 Hz
Recommended Enclosure Volume
10 - 40 Liters
Cone Design / Cone Material
Exp. Gmtry, REDCATT Pulp
Voice Coil Diameter / Winding
2"
Voice coil Winding Height
12 mm
Front Plate Thickness
8 mm
T/S Parameters:
Fs
89 Hz
Re
3.21 Ohm
Sd
214 cm2
Qms
3.05
Qes
0.42
Qts
0.37
Vas
10.5 Liters
Mms
20.0 g
Bl product (Force Factor)
9.5 Tm
Peak To Peak Displacement
21 mm
Le (mH @ 1kHz)
0.3
Mechanical Parameters:
Overall Diameter
209.5 mm
No. Of Mounting Holes
8
Bolt Circle Diameter
197.5 mm
Front Mount Baffle cutout
184 mm Nominal
Rear Mount Baffle cutout
185 mm Nominal
Total Depth
98.5 mm
Flange and gasket thickness
7.75 mm
Packaging info:
Net Weight
2.75 kg
Shipping Weight
3.4 kg
Packaging Dimensions
220x220x110 mm