Περιγραφή
Mid 8'' Mid 100,5 dB SPL 1W / 1m average
sensitivity , 51 mm (2 in) Interleaved Sandwich Voice coil (ISV) , 250 Watt AES
power handling Improved heat dissipation via unique basket design, Copper ring
to linearize impedance curve, Suitable for high quality midrange applications
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Key features
- 100,5 dB SPL 1W / 1m average sensitivity
- 51 mm (2 in) Interleaved Sandwich Voice coil
(ISV)
- 250 Watt AES power handling
- Improved heat dissipation via unique basket
design
- Copper ring to linearize impedance curve
- Suitable for high quality midrange
applications
Description
The 8M400 is a high power, high output, 200 mm (8 in) midrange for high level
professional use. The excellent sound quality has been achieved as a result of
extensive research on mid frequencies intelligibility. The 8M400 has been
designed for use as a midrange in both horn and direct radiation, closer or
reflex enclosures, as small as 3 lt.
The curvilinear cone, made with a high damping wood pulp, has been designed to
achieve the best possible linearity within its frequency range. The in-house
developed cone treatment is a humidity repellent and also dampens the bell mode
resonance significantly.
The 51 mm (2 in) ISV aluminum voice coil assembly is wound on a strong fiberglas
former to improve force transmission and power handling.
ISV technology is based on a high strength fiberglas former with half the coil
wound on the outside and half on the inside and bonded together using unique
high temperature resin adhesives.
The powerful magnet assembly assures high flux concentration. The force factor
and power handling are at an optimum level. The direct contact between the
finned basket and the magnetic structure significantly improves thermal
connection and heat dissipation, further increasing power handling and lowering
power compression.
The copper shorting ring on the pole piece reduces inductance and improves
transient response and phase control in the mid frequencies
Nominal Diameter |
200 mm (8 in) |
Rated
Impedance |
8 Ohm |
AES Power |
250 W |
Program Power |
320 W |
Peak Power |
650 W |
Sensitivity |
100,5
dB |
Frequency Range |
120 ? 6100 Hz |
Power
Compression @-10dB |
0,5
dB |
Power Compression @-3dB |
1,6 dB |
Power
Compression @Full Power |
2,7
dB |
Max Recomm. Frequency |
4000 Hz |
Recomm. Enclosure Volume |
2 ?
10 lt. (0,07 ? 0,35 cuft) |
Minimum Impedance |
6,5 Ohm at 25°C |
Max
Peak To Peak Excursion |
13 mm
(0,51 in) |
Voice Coil Diameter |
51 mm (2,00 in) |
Voice
Coil Winding Material |
aluminum |
Suspension |
M-roll, Polycotton |
Cone |
Curvilinear, Paper |
Fs |
90 Hz |
Re |
5,2
Ohm |
Sd |
0,0227 sq.mt. (35,19 sq.in.) |
Qms |
6,2 |
Qes |
0,28 |
Qts |
0,27 |
Vas |
16,2 lt. (0,57 cuft) |
Mms |
14
gr. (0,03 lb) |
BL |
12,2 Tm |
Linear Mathematical Xmax |
± 3
mm (±0,12 in) |
Le (1kHz) |
0,95 mH |
Ref.
Efficiency 1W@1m (half space) |
98,1
dB |
Overall diameter |
210 mm (8,27 in) |
N. of
mounting holes |
6 |
Mounting holes diameter |
6 mm (0,23 in) |
Bolt
circle diameter |
195 -
198 mm (7,68 - 7,80 in) |
Front mount baffle cutout o |
186 mm (7,32 in) |
Rear
mount baffle cutout o |
184
mm (7,24 in) |
Total depth |
105,5 mm (4,15 in) |
Flange and gasket thickness |
14,5
mm (0,57 in) |
Net weight |
4,5 kg (9,93 lb) |
Shipping weight |
4,8
kg (10,6 lb) |
CardBoard Packaging dimensions |
235 x 235 x 150 mm (9,25 x
9,25 x 5,91 in) |