8NMB250v4

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NEW 8” Neodymium Midbass, 2.5” voice coil, 250 W, 96 dB

KEY FEATURES:

96 db 1W / 1m average sensitivity
64 mm high temperature voice coil
Two demodulating rings
500 W AES program power
Ultra low distortion
Epoxy anti-corrosion coating of top and back plates of magnet structure

PART NUMBER: 11108N0308

Application : Power midbass speaker

The 8NMB250v4 is high efficiency, high power midbass neodymium loudspeaker with ultra-low distortion, specially designed to provide superior sound pressure level. It features 64 mm aluminium voice coil, aluminium die cast frame with powerful neodymium magnet structure with double demodulating rings. It is suitable for application as high power midrbass in direct radiating boxes and line array application.

SPECIFICATIONS

Nominal Diameter
Impedance
Minimum Impedance
Power Capacity AES ¹
Program Power ²
Sensitivity
Frequency Range
Voice Coil Diameter
Voice Coil Material
Voice Coil Former
V. C. Winding Depth
Magnet Gap Depth
Cone Material
Basket
Magnet
Flux Density

8"/210 inch/mm
8 Ohm
6,56 Ohm
250 W
500 W
(100-2000 Hz) 96 dB/W/m
80 – 4000 Hz
64 mm
Copper Clad Aluminium
Glassfiber
12 mm
6 mm
Paper with carbone fiber
Die cast aluminium
Neodymium
1.45 T

THIELE-SMALL PARAMETERS

Qms

Qes

Qts

Vas

Mms

Xmax*

Cms

Le at 1kHz

82,03 Hz
6,379
0.269
0.258
10,89 Litres
19,32 grams
5,5 Ohms
202 cm2
± 4,5 mm
0.195 mm/N
14,26 T.m
0.134 mH

1. AES standard. Power is calculated on rated minimum impedance. Measurement is in 18 L box enclosure tuned 82 Hz using a 60-2000 Hz band limited pink noise test signal applied continuously for 2 hours.
2. Program power is defined as 3db greater than AES Power Capacity.

* Linear Mathematical Xmax is calculated as: (Hvc - Hg)/2 + Hg/4 where Hvc is the voice coil depth and Hg is the gap depth.

MOUNTING INFORMATION

Overall Diameter
Baffle Hole Diameter
Mounting Holes
Bolt Circle Diameter
Overall Depth
Net Weight

225 mm
187 mm
8 with dia. 6.5 mm
210 mm
83,5 mm
2,56 kg

RECONE KIT:
RK8NMB250v4 - Part No: R1108N0308