JJC8WF-8A
Key Features:
  • 8" (205 mm), 8 ohm
  • Woofer, 25 watt
  • Ferrite magnet, Black Talc Filled Polypropylene cone with Polyether foam surround
  • RoHS compliant

Primary Specifications

Speakers Environment Indoor
ROHS Compliant Yes

Technical Specifications

UNIT of MEASURE
Nominal Basket Diameter 8.0 / 205.0 inch / mm
Rated Impedance 8 ohms
Rated Power 25.0 Watts
Program Power 50 Watts
Frequency Range 35 - 3000 Hz
Sensitivity
(2.83 V input measured at 1 Meter)
89 dB SPL
Voice Coil Diameter 1.0 / 25.4 inch / mm
Magnet Weight 20.0 / 568 oz / gr
Transformer

Small Signal Parameters

UNIT of MEASURE
Resonant Frequency (fo) 39 Hz
D.C. Resistance (Re) 6.4 ohms
Mechanical Q (Qms) 5.9
Electrical Q (Qes) 0.53
Total Q (Qts) 0.49
Compliance Equivalent Volume (Vas) 42.9 ltr
BL Product (BL) 10.0 T-M
Maximum Linear Excursion (Xmax) 7.2 mm
Surface Area of Cone (Sd) 235.0 cm2
Moving Mass (Mmd) g

Material Descriptions

 
Basket Stamped Steel
Terminal Size 0.205 x 0.02
Magnet Ferrite
Voice Coil Wire Copper
Voice Coil Form Aluminum
Cone Black Talc Filled Polypropylene
Cone Edge Polyether Foam
Dust Cap Plastic
http://s3.amazonaws.com/misco/curves/JJC8WF-8A.JPG?1345610389
ID Description Measurements Tolerance
OD Outside Diameter 8.2 in. +/- 0.040”
CD Cutout Diameter 7.2 in. +/- 0.030”
MG Magnet Diameter 3.4 in. +/- 0.050”
HD Hole Diameter 0.3 in. +/- 0.020”
MD Mounting Diameter 7.7 in. +/- 0.020”
ID Internal Depth 3.4 in. Maximum
FT Flange Thickness 0.18 in. +/- 0.050”
NW Net Weight 1473.0 g
ceramic