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APPLICATION:

• Ideal for two-way and multi-way (line arrays) enclosure designs,

where small size and weight factor is required.

81NPM

SPECS PDF

DRAWING PDF

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NEODYMIUM MID-WOOFER

Ordering code: 81NPM-263

CONT. POWER

SENS.

Fs

Freq. Range

VC Dia.

 IN-OUT WOUND

VC Wire

Cone /

Surround

Magnet

Type

1000 WATTS

95 dB

64 Hz

70-

4,000 Hz

3.0"

OUTSIDE

CCAW

PAPER w. CF

FABRIC

NEO

     The 81NPM was designed for good reproduction

of voice. With an extended low-frequency response, this mid-woofer is highly suitable for two-way and multi-way systems. It’s high power handling capabilities extend the ideal usage as a mid-range driver in line-array systems. The 81NPM uses a lightweight half-pressed paper cone reinforced by our proprietary cone treatment, which also works as weatherization protection. The used high-quality components ensure long-last- ing performance even in high powered applications. The chosen material combination provides remarkable strength, high efficiency and sustained output under extreme conditions.

 

Power Handling

The voice coil featuring Kapton former material capable of withstanding peak temperatures above 300°C, well beyond

the thermal requirements of modern audio systems. Former strength provides the ideal transfer of power between the voice coil and the cone assembly and assists in reducing distortion artifacts. By combining this material with state of the art adhesives and our winding voice coil technology, the 81NPM delivers incredibly high performance.

 

 

 

 

GENERAL SPECIFICATIONS:

Nominal Diameter

200 mm (8 in.)

Rated Impedance

8 ohm

Power Handling

 

AES Power

500 watts

PROGRAM Power

1000 watts

PEAK Power

2000 watts

Power Compression

 

@ -10dB

0.4 dB

@ 0dB

0.9 dB

@ Max. Power

1.8  dB

Max. Recommended X-OVER Freq.

3,000 Hz

Recommended Enclosure Volume

4 - 20 Liters

Cone Design / Cone Material

Exp. Gmtry, REDCATT Pulp

Voice Coil Diameter / Winding

3.0"

Voice coil Winding Height

22.5 mm

Front Plate Thickness

10 mm

T/S Parameters:

 

Fs

64 Hz

Re

5.2 Ohm

Sd

221.7 cm2

Qms

7.98

Qes

0.321

Qts

0.308

Vas

10.7 Liters

Mms

40 g

Bl product (Force Factor)

16.0 Tm

Peak To Peak Displacement

17.5 mm

Le (mH @ 1kHz)

0.53

Mechanical Parameters:

 

Overall Diameter

210 mm

No. Of Mounting Holes

8

Bolt Circle Diameter

195 mm

Front Mount Baffle cutout

187 mm Nominal

Rear Mount Baffle cutout

192 mm Nominal

Total Depth

110 mm

Flange and gasket thickness

11 mm

Packaging info:

 

Net Weight

1.75 kg (3.86 lbs.)

Shipping Weight

2.1 kg (4.6 lbs.)

Packaging Dimensions

30x30x16cm (11.8x11.8x6.3 in.)

 

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