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 Resistance6.24 Ω±5.0%
Resonant Frequency60.7 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 Bandwidth55Hz-5KHz 12 dB/Oc
Effective Piston Area88.3 cm2
Moving Mass9 g
Motor Force Factor7.08 T•m
Voice Coil Inner Diameter25.73 mm
Gap Height6 mm
Maximum Linear Excursion3.5 mm
Ferrofluid Type
Minimum Impedance6.95 Ω±7.5%
Voice Coil Inductance0.3 mH
Mechanical Q Factor5.75
Electrical Q Factor0.43
Total Q Factor0.4
Ratio152.9 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance766 μm/N
Effective Cone Diameter10.6 cm
Motor Efficiency Factor8 (T•m2)/Ω
Voice Coil Former MaterialGSV
Transducer Mass1.06 Kg
Equivalent Volume8.44 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.