g17rex/ph 648 woofer
H 648
OF NORWAY
Response curve recorded in anechoic chamber (Free-field, 4 pi radiation) with 0.5m microphone distance. The
loudspeaker is mounted in a closed box of 12 l net volume.
WOOFER
G17REX/P
G17REX/P is a 6,5" High Fidelity woofer with an injection moulded
metal chassis. A fibre glass cone, a bullet shaped phase plug and a
high loss rubber surround are carefully matched to each other, resulting
in a smooth frequency response, and a clear, precise reproduction of the
critical midrange area. The unit has a high power handling capacity due to
its relatively large voice coil diameter. The magnet system has a T-shaped
cross section of the pole piece for low modulation distortion. The phase
plug reduces compression due to temperature variations in the voice coil,
avoids resonances that would occur in the volume between the dust cap and
the pole piece and increases the power handling capacity. The large magnet
system provides high efficiency and low Q.
NOMINAL IMPEDANCE
RECOMMENDED FREQUENCY RANGE
SHORT TERM MAXIMUM POWER *
Ohms
250
W
VOICE COIL RESISTANCE
VOICE COIL INDUCTANCE (EQUIVALENT)
W17-702
0.6
Ohms
mH
FORCE FACTOR
8.5
N/A
LONG TERM MAXIMUM POWER *
100
W
FREE AIR RESONANCE
33
Hz
88.5
dB SPL
MOVING MASS
16
g
W
AIR LOAD MASS IN IEC BAFFLE
1.0
g
SUSPENSION COMPLIANCE
1.4
mm/N
5.5
VOICE COIL DIAMETER
39
mm
SUSPENSION MECHANICAL RESISTANCE
2.0
Ns/m
VOICE COIL HEIGHT
12
mm
EFFECTIVE PISTON AREA
120
sq.cm
AIR GAP HEIGHT
6.0
mm
LINEAR COIL TRAVEL ( p-p )
6.0
mm
MAXIMUM COIL TRAVEL ( p-p)
19
mm
MAGNETIC GAP FLUX DENSITY
1.0
T
MAGNET WEIGHT
0.64
Kg
TOTAL WEIGHT
1.81
Kg
VAS
QMS
QES
QTS
* = IEC 268-5
OCT. 96
6.1
CHARACTERISTIC SENSITIVITY (1W,1m)
OPERATING POWER (96 dB SPL ,1 m)
NOTES
8
38-3000 Hz
27.5 Litres
1.76
0.30
0.25
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