KC42C-8A
Key Features:
  • 4.5" (115mm), 8 ohm
  • Full Range, 40 watts
  • Ferrite magnet, Paper cone with cloth surround;

Primary Specifications

Speakers Environment Indoor
ROHS Compliant No

Technical Specifications

UNIT of MEASURE
Nominal Basket Diameter 4.5 / 115.0 inch / mm
Rated Impedance 8 ohms
Rated Power 40.0 Watts
Program Power 80 Watts
Frequency Range 90 - 16,000 Hz
Sensitivity
(2.83 V input measured at 1 Meter)
90 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) 117 Hz
D.C. Resistance (Re) 6.6 ohms
Mechanical Q (Qms) 8.5
Electrical Q (Qes) 0.68
Total Q (Qts) 0.63
Compliance Equivalent Volume (Vas) 3.0 ltr
BL Product (BL) 5.0 T-M
Maximum Linear Excursion (Xmax) 0.9 mm
Surface Area of Cone (Sd) 64.0 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 Kapton
Cone Paper
Cone Edge Cloth
Dust Cap Paper
http://s3.amazonaws.com/misco/curves/KC42C-8A.JPG?1345610447
ID Description Measurements Tolerance
OD Outside Diameter 4.6 in. +/- 0.040”
CD Cutout Diameter 4.2 in. +/- 0.030”
MG Magnet Diameter 3.4 in. +/- 0.050”
HD Hole Diameter 0.2 in. +/- 0.020”
MD Mounting Diameter 4.7 in. +/- 0.020”
ID Internal Depth 2.2 in. Maximum
FT Flange Thickness 0.1 in. +/- 0.050”
NW Net Weight 918.0 g
ceramic