JC40W-4A
Key Features:
  • 4" (100 mm), 4 ohm
  • Extended Range Music and Voice, 15 watt
  • Ferrite magnet, Titanium Electroplated Polypropylene cone with Natural rubber surround;

Primary Specifications

Speakers Environment Indoor
ROHS Compliant No

Technical Specifications

UNIT of MEASURE
Nominal Basket Diameter 4.0 / 100.0 inch / mm
Rated Impedance 4 ohms
Rated Power 15.0 Watts
Program Power 30 Watts
Frequency Range 60 - 20000 Hz
Sensitivity
(2.83 V input measured at 1 Meter)
87 dB SPL
Voice Coil Diameter 0.8 / 20.3 inch / mm
Magnet Weight 10.0 / 284 oz / gr
Transformer

Small Signal Parameters

UNIT of MEASURE
Resonant Frequency (fo) 68 Hz
D.C. Resistance (Re) 3.5 ohms
Mechanical Q (Qms) 5.6
Electrical Q (Qes) 0.38
Total Q (Qts) 0.35
Compliance Equivalent Volume (Vas) 4.3 ltr
BL Product (BL) 4.7 T-M
Maximum Linear Excursion (Xmax) 3.1 mm
Surface Area of Cone (Sd) 55.0 cm2
Moving Mass (Mmd) g

Material Descriptions

 
Basket Stamped Steel
Terminal Size 0.110 X 0.02 / 0.205 X 0.02
Magnet Ferrite
Voice Coil Wire Copper
Voice Coil Form Kapton
Cone Titanium Electroplated Polypropylene
Cone Edge Natural Rubber
Dust Cap Felt
http://s3.amazonaws.com/misco/curves/JC40W-4A.JPG
ID Description Measurements Tolerance
OD Outside Diameter 4.0 in. +/- 0.040”
CD Cutout Diameter 3.7 in. +/- 0.030”
MG Magnet Diameter 3.4 in. +/- 0.050”
HD Hole Diameter 0.3 in. +/- 0.020”
MD Mounting Diameter 4.6 in. +/- 0.020”
ID Internal Depth 2.2 in. Maximum
FT Flange Thickness 0.1 in. +/- 0.050”
NW Net Weight 856.0 g
ceramic