HDS PPB 4" Midwoofer
Peerless
Type Number:830870

Features

The new High Definition Sound (HDS) PPB series is the culmination of Peerless working in close partnership with end users of Peerless-based audio products. With a deep understanding of customer requirements and needs, Peerless developed the proprietary and highly advanced Polypropylene Black (PPB) cone material used in the HDS PPB Series, creating a stiff but still dampened cone that remains stable even under the greatest sound pressures. See architecture notes for HDS Platform

Driver Highlights: PPB diaphragm, 26 mm coil, AL
See Application Notes

Specs

Electrical Data
Nominal Impedance Zn 8 ohm
Minimum Impedance Zmin 5.6 ohm
Maximum Impedance Zo 30.8 ohm
DC Resistance Re 5.2 ohm
Voice Coil Inductance Le 0.6 mH
TS Parameters
Resonance Frequency fs 77.6 Hz
Mechanical Q factor QMS 3.19
Electrical Q factor QES 0.65
Total Q factor Qts 0.54
Ratio fs/Qts F 144
Force Factor Bl 4.8 Tm
Mechanical Resistance Rms 0.9 Kg/s
Moving Mass Mms 5.9 g
Suspension Compliance Cms 0.72 mm/N
Effective cone diameter D 8.4 cm
Effective Piston Area sd 55 cm^2
Equivalent Volume Vas 3 ltrs
Sensitivity 2.83V/1m 87 dB
Ratio BL/v Re 2.1
Voice Coil and Magnet Parameters
Voice Coil Diameter 26 mm
Voice Coil Height 12 mm
Voice Coil Layers 2
Height of the Gap 6 mm
Linear Excursion +/- 3 mm
Total Useful Flux 0.7 mWb
Diameter of Magnet 81 mm
Height of Magnet 15 mm
Weight of Magnet 0.31 Kg

Frequency

Mechanical Dimensions