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Peerless by Tymphany 830875 6-1/2″ Nomex Cone HDS Woofer


This 6.5 inch 8 ohm 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, heat sinking capacity for the motor, and additional air venting under the spider so as to again reduce air compression effects. The cone in this model is nomex based, offering a unique visual and acoustic experience.

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Driver Size 6.5 in
DC Resistance 6.37 Ω ±5.0%
Resonant Frequency 45.82 Hz 15%
Half Space Sensitivity @ 2.83V 89.04 dB ±1.01
Sensitivity @ 1W/1m 88.6 dB ±1.01
Rated Noise Power (IEC 268-5 18.1) 75 W
Test Spectrum Bandwidth 40Hz – 3kHz 12 dB/Oct
Effective Piston Area 143.1 cm2
Moving Mass 15.9 g
Motor Force Factor 8.47 T•m
Voice Coil Inner Diameter 32.41 mm
Gap Height 6 mm
Maximum Linear Excursion 5.3 mm
Ferrofluid Type
Minimum Impedance 7.18 Ω ±7.5%
Voice Coil Inductance 0.41 mH
Mechanical Q Factor 3.19
Electrical Q Factor 0.41
Total Q Factor 0.36
Ratio 126.93 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance 756.8 μm/N
Effective Cone Diameter 13.5 cm
Motor Efficiency Factor 11.3 (T•m2)/Ω
Voice Coil Former Material ASV
Driver Mass 1.56 Kg
Equivalent Volume 21.78 L





Platform: Peerless
Driver Type: Woofer
Size: 6.5 in
Motor: Ferrite
Frame: Al Basket
Impedance: 8 Ω
Diaphragm: Nomex