RJC4W-4A
Key Features:
  • 4" (100 mm), 4 ohm
  • Woofer, 30 watt
  • Ferrite magnet, titanium electroplated polypropylene cone with natural rubber surround
  • RoHS Complaint;

Primary Specifications

Speakers Environment Indoor
ROHS Compliant Yes

Technical Specifications

UNIT of MEASURE
Nominal Basket Diameter 4.0 / 100.0 inch / mm
Rated Impedance 4 ohms
Rated Power 30.0 Watts
Program Power 60 Watts
Frequency Range 60 - 9500 Hz
Sensitivity
(2.83 V input measured at 1 Meter)
87 dB SPL
Voice Coil Diameter 1.0 / 25.4 inch / mm
Magnet Weight 10.0 / 284 oz / gr
Transformer

Small Signal Parameters

UNIT of MEASURE
Resonant Frequency (fo) 79 Hz
D.C. Resistance (Re) 3.4 ohms
Mechanical Q (Qms) 6.2
Electrical Q (Qes) 0.47
Total Q (Qts) 0.44
Compliance Equivalent Volume (Vas) 3.3 ltr
BL Product (BL) 4.6 T-M
Maximum Linear Excursion (Xmax) 3.6 mm
Surface Area of Cone (Sd) 57.0 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 Plastic
http://s3.amazonaws.com/misco/curves/RJC4W-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 3.3 in. +/- 0.020”
ID Internal Depth 2.1 in. Maximum
FT Flange Thickness 0.1 in. +/- 0.050”
NW Net Weight 825.0 g
ceramic