
Ultimate Woofer,
Ø 9", Ø 5.1" voicecoil, 8Ω
SPECIFICATIONS
General Data FEATURES
Overall Dimensions
222mmx125mm(8.74"x4.92") * Uniflow™ Aluminum diecast chassis
Nominal Power Handling (DIN)
500W * High flux double Ferrite magnet system
Transient Power 10ms 1500W * 5.1" Large Hexatech™ Aluminum voice coil
Sensitivity 2.83V/1M 85.8 dB SPL * One piece paper cone/center dome
Frequency Response
See graph * Accucenter™ self centering cone assembly
Cone Material Composite cellular fiber * PFS™ Progression Field Symmetry
Net Weight
5.95 spider/surround engineering
Electrical Data Unit Dimensions
Nominal Impedance
8Ω
DC Resistance
6.2Ω
Voice Coil Inductance @ 1KHz
1.32mH
Voice Coil and Magnet Parameters
Voice Coil Diameter
130mm (5.1")
Voice Coil Height
35mm (1.37")
HE Magnetic Gap Height
12mm (0.47")
Max. Linear Excursion
± 11.5mm (0.45")
Voice Coil Former Aluminum
Voice Coil Wire Hexatech™ Aluminum
Number Of Layers 2
Magnet System Type High flux double ferrite vented
B Flux Density
0.64 T
BL Product
13 N.A
T-S Parameters
Suspension Compliance
0.47mm/N
- Overall diameter 222mm
Mechanical Q Factor
1.61
- Cut out diameter 189.2mm
Electrical Q Factor
0.45
- Flange thickness 5mm
Total Q Factor
0.35
- Overall height 125mm
Mechanical Resistance
7.374Kg/s
- Basket/magnet depth 120mm
Moving Mass
65.5 g
- Mounting holes location diameter 213mm
Eq. Cas Air Load (liters)
39.5 Lt
- 6 Mounting holes, at 60º interval,
Resonant Frequency
28 Hz inner hole diameter Ø 5mm
Effective Piston Area
243 cm ²
Measured on IEC baffle using Bruel & Kjaer 3144 model microphone.
For correct readings, measurement should be conducted after a sufficient run-in period,
at minimum temperature of 21º C (69.8º F), for both drive unit and measurement environment.
Morel operate policy of continuous product design improvement, consequently specifications are subject to alteration without prior notice.
UW 958