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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

 

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