Driver Specification Sheet
Model No:
Product Line:
HDS-P830992
Peerless
Product Description
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 a glass fibre composite, offering a unique visual and
acoustic experience.
Mechanical Drawing
Rev:
Last Update:
2
2015-10-28 09:08:20
Specifications
DC Resistance
Minimum Impedance
Voice Coil Inductance
Resonant Frequency
Mechanical Q Factor
Electrical Q Factor
Total Q Factor
Ratio Fs/Qts
Half Space Sensitivity @2.83V
Half Space Sensitivity @1W/1M
Gap Height
Maximum Linear Excursion
Ferrofluid Type
Driver Mass
Revc Ohms 5.25 5.0%
Zmin Ohms 5.75 7.5%
Le mH 0.24
Fs Hz 88.61 15%
Qms 2.95
Qes 0.72
Qts 0.58
F Fs/Qts 153.83
db@2.83V/1M dB 86.12 +/- 1.0db
db@1W/1M dB 84.7 +/- 1.0db
Gh mm 6
Xmax mm 3
FF
Kg 0.91
Frequency and Impedance Response
Energy Bandwidth Product
Moving Mass
Suspension Compliance
Effective Cone diameter
Effective Piston Area
Effective Volume
Motor Force Factor
Motor Efficiency Factor
Voice coil former Material
Voice coil inner diameter
Rated Noise Power
Test Spectrum Bandwidth
Driver Size
EBP (1/Qes)*fs
Mms g 5.9
Cms um/N 545.9
D cm 8.45
Sd cm^2 56.1
Vas L 2.41
BL Tm 4.91
ß (T*M^2)/Ohms 4.6
VCfm ASV
VCd mm 25.73
P W 30
20Hz - 5kHz
Inch 4 in
Address : Room 1307-8 Dominion Centre, 43-59 Queens Rd East, Wanchai, Hong Kong
Tymphany HK LTD
E-mail: sales@tymphany.com