JN4W-8A
Key Features:
  • 4" (100 mm), 8 ohm
  • Mid-Woofer, 15 watt
  • Neodymium magnet, Titanium Electroplated Polypropylene cone with natural rubber
  • RoHS compliant

Primary Specifications

Speakers Environment Indoor
ROHS Compliant Yes

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 60 - 10000 Hz
Sensitivity
(2.83 V input measured at 1 Meter)
83 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) 85 Hz
D.C. Resistance (Re) 6.2 ohms
Mechanical Q (Qms) 3.6
Electrical Q (Qes) 1.3
Total Q (Qts) 0.97
Compliance Equivalent Volume (Vas) 2.4 ltr
BL Product (BL) 3.8 T-M
Maximum Linear Excursion (Xmax) 5.1 mm
Surface Area of Cone (Sd) 53.0 cm2
Moving Mass (Mmd) g

Material Descriptions

 
Basket Stamped Steel
Terminal Size 0.205 X 0.02
Magnet Neodymium
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/JN4W-8A.JPG
ID Description Measurements Tolerance
OD Outside Diameter 4.0 in. +/- 0.040”
CD Cutout Diameter 3.7 in. +/- 0.030”
MG Magnet Diameter 1.4 in. +/- 0.050”
HD Hole Diameter 0.3 in. +/- 0.020”
MD Mounting Diameter 4.6 in. +/- 0.020”
ID Internal Depth 1.7 in. Maximum
FT Flange Thickness 0.1 in. +/- 0.050”
NW Net Weight 173.0 g
neodymium