KC8WF-4A
Key Features:
  • 8" (205 mm), 4 ohm
  • Woofer, 25 watt
  • Ferrite magnet, Black Talc Filled Polypropylene cone with Polyether Foam surround;

Primary Specifications

Speakers Environment Indoor
ROHS Compliant No

Technical Specifications

UNIT of MEASURE
Nominal Basket Diameter 8.0 / 205.0 inch / mm
Rated Impedance 4 ohms
Rated Power 25.0 Watts
Program Power 50 Watts
Frequency Range 38 - 2000 Hz
Sensitivity
(2.83 V input measured at 1 Meter)
91 dB SPL
Voice Coil Diameter 1.0 / 25.4 inch / mm
Magnet Weight 12.0 / 341 oz / gr
Transformer

Small Signal Parameters

UNIT of MEASURE
Resonant Frequency (fo) 38 Hz
D.C. Resistance (Re) 3.2 ohms
Mechanical Q (Qms) 5.7
Electrical Q (Qes) 0.38
Total Q (Qts) 0.35
Compliance Equivalent Volume (Vas) 51.0 ltr
BL Product (BL) 6.9 T-M
Maximum Linear Excursion (Xmax) 4.2 mm
Surface Area of Cone (Sd) 219.0 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 Paper
http://s3.amazonaws.com/misco/curves/KC8WF-4A.JPG
ID Description Measurements Tolerance
OD Outside Diameter 8.2 in. +/- 0.040”
CD Cutout Diameter 7.1 in. +/- 0.030”
MG Magnet Diameter 3.4 in. +/- 0.050”
HD Hole Diameter 0.35 in. +/- 0.020”
MD Mounting Diameter 7.8 in. +/- 0.020”
ID Internal Depth 3.2 in. Maximum
FT Flange Thickness 0.18 in. +/- 0.050”
NW Net Weight 1218.0 g
ceramic