KC42C-8B
Key Features:
  • 5" (127mm), 8 ohm
  • Full Range, 40 watts
  • Ferrite magnet, Paper cone with cloth surround
  • RoHS compliant

Primary Specifications

Speakers Environment Indoor
ROHS Compliant Yes

Technical Specifications

UNIT of MEASURE
Nominal Basket Diameter 5.0 / 127.0 inch / mm
Rated Impedance 8 ohms
Rated Power 40.0 Watts
Program Power 80 Watts
Frequency Range 80 - 15,000 Hz
Sensitivity
(2.83 V input measured at 1 Meter)
92 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) 79 Hz
D.C. Resistance (Re) 6.4 ohms
Mechanical Q (Qms) 5.1
Electrical Q (Qes) 0.43
Total Q (Qts) 0.4
Compliance Equivalent Volume (Vas) 10.4 ltr
BL Product (BL) 4.5 T-M
Maximum Linear Excursion (Xmax) 2.2 mm
Surface Area of Cone (Sd) 71.0 cm2
Moving Mass (Mmd) g

Material Descriptions

 
Basket Stamped Steel
Terminal Size 0.205 x 0.02
Magnet Ferrite
Voice Coil Wire Aluminum
Voice Coil Form Kapton
Cone Paper
Cone Edge Cloth
Dust Cap Paper
http://s3.amazonaws.com/misco/curves/KC42C-8B.JPG
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 0.12 in. +/- 0.050”
NW Net Weight 947.0 g
ceramic