Transducer Size (Millimeters)133.35
DC Resistance6.24
Resonant Frequency60.7
Half Space Sensitivity88.67
Rated Noise Power40
Test Spectrum Bandwidth55Hz-5KHz

Transducer Size (Millimeters) 133.35
DC Resistance 6.24 Ω±5.0%
Resonant Frequency 60.7 Hz15%
Half Space Sensitivity @ 2.83V88.67 dB±1.01
Sensitivity @ 1W/1m88.1 dB±1.01
Rated Noise Power (IEC 268-5 18.1)40 W
Test Spectrum Bandwidth 55Hz-5KHz 12 dB/Oc
Effective Piston Area 88.3 cm2
Moving Mass 9 g
Motor Force Factor 7.08 T•m
Voice Coil Inner Diameter 25.73 mm
Gap Height 6 mm
Maximum Linear Excursion 3.5 mm
Ferrofluid Type
Minimum Impedance 6.95 Ω±7.5%
Voice Coil Inductance 0.3 mH
Mechanical Q Factor 5.75
Electrical Q Factor 0.43
Total Q Factor 0.4
Ratio 152.9 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance 766 μm/N
Effective Cone Diameter 10.6 cm
Motor Efficiency Factor 8 (T•m2)/Ω
Voice Coil Former Material GSV
Transducer Mass 1.06 Kg
Equivalent Volume 8.44 L

This 8 ohm 5.25 inch driver is a member of the high performance HDS family. A powerful ferrite magnet system is coupled to a finite element analysis designed suspension system, containing both a linear spider design and a rubber surround. The motor contains an aluminium shorting ring, which reduces coil inductance, thus providing both extended frequency response performance and reduced distortion. The long-throw voice coil ensures linear high excursion performance, needed for signal clarity. The cone necks are vented so as to reduce air compression effects under high excursion conditions. The cast aluminium basket offers structural rigidity, The cone in this model is a treated paper cone, offering a unique visual and acoustic experience.