The Peerless HDS-134 PP 5.25 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 damped black polypropylene, offering a unique visual and acoustic experience.
Specifications
Transducer Size | 5.25 in | – | ||
DC Resistance | 5.9 Ω | ±5.0% | ||
Resonant Frequency | 61.6 Hz | 15% | ||
Half Space Sensitivity @ 2.83V | 87.5 dB | ±1.01 | ||
Sensitivity @ 1W/1m | 86.5 dB | ±1.01 | ||
Rated Noise Power (IEC 268-5 18.1) | 50 W | – | ||
Effective Piston Area | 89.9 cm2 | – | ||
Moving Mass | 9 g | – | ||
Motor Force Factor | 5.9 T•m | – | ||
Voice Coil Inner Diameter | 25.73 mm | – | ||
Gap Height | 6 mm | – | ||
Maximum Linear Excursion | 3.5 mm | – | ||
Ferrofluid Type | – | |||
Minimum Impedance | 6.35 Ω | ±7.5% | ||
Voice Coil Inductance | 0.27 mH | – | ||
Mechanical Q Factor | 2.21 | – | ||
Electrical Q Factor | 0.59 | – | ||
Total Q Factor | 0.47 | – | ||
Ratio | 131.9 fs/Qts | – | ||
Test Spectrum Bandwidth (1300-20000 Hz) | 60Hz - 5kHz 12 dB/Oct | – | ||
Energy Bandwidth Product ((1/Qes)•fs) | – | |||
Suspension Compliance | 740.5 um/N | – | ||
Effective Cone Diameter | 10.7 cm | – | ||
Motor Efficiency Factor | 5.9 (T•m2)/Ω | – | ||
Voice Coil Former Material | ASV GSV | – | ||
Transducer Mass | 1.06 Kg | – | ||
Equivalent Volume | 8.41 L | – |