The Peerless HDS-106 PPB 4 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
power handling (continuous/programme) = 25 W
frequency range = 80-7000 Hz
resonance frequency fs = 91 Hz
impedance R = 8 Ohm
sound pressure level SPL = 85,9 dB (2,83V; 1m)
DC resistance Re = 5,17 Ohm
force factor BL = 4,94 N/A
voice coil inductance L = 0,16 mH
effective piston radiating area Sd = 56,8 cm2
effective mechanical mass incl. air load mms = 6,1 g
equivalent volume of compliance Vas = 2,28 l
total Q factor Qts = 0,53 (Qms=1,92, Qes=0,74)
voice coil diameter = 25 mm
maximum peak linear excursion vibration xlin = +/- 3 mm
