JN4C
Key Features:
  • 4" (100mm), 8 ohm
  • Full Range, 15 watts
  • Neodymium magnet, paper cone with pre-treated black cloth 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 8 ohms
Rated Power 15.0 Watts
Program Power 30 Watts
Frequency Range 75 - 12000 Hz
Sensitivity
(2.83 V input measured at 1 Meter)
88 dB SPL
Voice Coil Diameter 1.0 / 25.4 inch / mm
Magnet Weight 1.0 / 28 oz / gr
Transformer

Small Signal Parameters

UNIT of MEASURE
Resonant Frequency (fo) 99 Hz
D.C. Resistance (Re) 6.7 ohms
Mechanical Q (Qms) 6.2
Electrical Q (Qes) 0.79
Total Q (Qts) 0.7
Compliance Equivalent Volume (Vas) 3.2 ltr
BL Product (BL) 4.3 T-M
Maximum Linear Excursion (Xmax) 2.5 mm
Surface Area of Cone (Sd) 55.0 cm2
Moving Mass (Mmd) g

Material Descriptions

 
Basket Stamped Steel
Terminal Size 0.25 X 0.03
Magnet Neodymium
Voice Coil Wire Copper
Voice Coil Form Kapton
Cone Paper
Cone Edge Pre-treated Black Cloth
Dust Cap Paper
http://s3.amazonaws.com/misco/curves/JN4C.JPG?1345610422
ID Description Measurements Tolerance
OD Outside Diameter 4.1 in. +/- 0.040”
CD Cutout Diameter 3.8 in. +/- 0.030”
MG Magnet Diameter 1.4 in. +/- 0.050”
HD Hole Diameter 0.2 in. +/- 0.020”
MD Mounting Diameter 4.7 in. +/- 0.020”
ID Internal Depth 1.7 in. Maximum
FT Flange Thickness 0.1 in. +/- 0.050”
NW Net Weight 197.0 g
neodymium