Description :
Huge ferrite magnet, under hung motor design.
Short ring VC = 38mm.
Very low 2nd and 3rd distortion (low THD).
Long throw, high power loading, X-max = 9mm.
Coated paper cone with wide range temperature of foam rubber surround.
Unit : pc Gross Weight : 7.6kg
SIZE：8"
CATEGORY：Woofer
DIAPHRAGM MTL：Paper
SURROUND MTL：Foam Rubber
NOMINAL IMPEDANCE：4 Ω
DCR IMPEDANCE：3.6 Ω
SENSITIVITY 1W/1m：88 dB
FREQUENCY RESPONSE：35-3.5K Hz
FREE AIR RESONANCE：35 Hz
VOICE COIL DIAMETER：38.5 mm
AIR GAP HEIGHT：25 mm
RATED POWER INPUT：60 W
MAXIMUM POWER INPUT：120 W
FORCE FACTOR, BL：6.01 TM
TYPE OF MAGNET：Ferrite
MOVING MASS：25.94 g
FERROFLUID ENHANCED：No
SUSPENSION COMPLIANCE：802.038 uMN¯¹
EFFECTIVE PISTON AREA：0.022 M²
Levc：0.111 mH
Zo：26 Ω
X-max：8.50 mm
Vas：55.12 Litr
Qts：0.49
Qms：3.56
Qes：0.57
Resonant frequency Fs 32 Hz
Surface area of cone Sd 220 cm²
DC resistance Re 3.6 Ω
Mechanical Q Qms 2.46
Electromagnetic Q Qes 0.37
Total Q factor Qts 0.32
Mechanical suspension compliance Cms 843 µm/N
Compliance equivalent air volume Vas 57.94 liters
Moving mass Mmd 33 g
Moving mass (including airload) Mms 34.92 g
Mechanical resistance Rms 2.9 N·s/m
BL product BL 7.95 T·m
Voice coil inductance Le 0.254 mH
Maximum linear excursion (one way) Xmax 8.5 mm
Efficiency η₀ 0.5 %
Efficiency bandwidth product EBP 86
Effective diaphragm diameter Ø 16.7 cm
Diaphragm material Paper
Surround material Rubber
Voice Coil Parameters
Voice coil diameter 49.5 mm
Magnet Parameters
Magnet material Ferrite
Air gap height 25 mm