Peerless HDS-P830870 (Vifa HDS PPB 4-25/08) - Polypropylene

-10 %

RRP 49,00 €

incl. 19% VAT (Deutschland) plus shipping
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-10 %
4" Midwoofer

This 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.

Short data

Usage as Bass-Midrange
Power Handling 25 Watt
Impedance 8 Ohm
Frequency from 90 Hz
Max. Frequency 6 kHz
Sound pressure 84.4 dB


Overall dimensions 120.8 mm
Baffle cutout 94.9 mm
Depth (Total) 53 mm
Frame Material Magnesium diecast
Membrane Type Cone
Membrane Material Polypropylene
Voice coil Ø 25.73 mm
Voice coil material Aluminium
Air gap height 6 mm


Resonance fs fs: 91.08 Hz
Mechanical Q Qms: 1.92
Electrical Q Qes: 0.74
Total Q Qts: 0.53
Equivalent Air-Volumen Vas: 2.28 Liter
DC-Resistance Re: 5.17 Ohm
Coil Inductance Le: 0.16 mH
Mech. Compliance Cms: 0.5048 mm/N
Moving Mass Mms: 6.1 g
mech. Resistance Rms: 0.9 kg/s-¹
Max. Excursion +/- Xmax: 3 mm
BL Product Bl: 4.94 N/A
Membrane Area Sd: 56.8 cm²
Sound pressure dB: 84.4 SPL

Frequency & Impedance

Technical Dimensions

PDF-Product information

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