JC8GL-4B
Key Features:
  • 8" (205 mm), 4 ohm
  • Guitar speaker, 15 watts
  • Ferrite magnet, felted paper cone;

Primary Specifications

Speakers Environment Indoor
ROHS Compliant No

Technical Specifications

UNIT of MEASURE
Nominal Basket Diameter 8.0 / 205.0 inch / mm
Rated Impedance 4 ohms
Rated Power 15.0 Watts
Program Power 30 Watts
Frequency Range 50- 15000 Hz
Sensitivity
(2.83 V input measured at 1 Meter)
98 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) 116 Hz
D.C. Resistance (Re) 3.5 ohms
Mechanical Q (Qms) 7.9
Electrical Q (Qes) 0.96
Total Q (Qts) 0.85
Compliance Equivalent Volume (Vas) 18.9 ltr
BL Product (BL) 4.3 T-M
Maximum Linear Excursion (Xmax) 0.2 mm
Surface Area of Cone (Sd) 224.0 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 Nomex
Cone Felted Paper
Cone Edge Paper
Dust Cap Felt
http://s3.amazonaws.com/misco/curves/JC8GL-4B.JPG
ID Description Measurements Tolerance
OD Outside Diameter 8.1 in. +/- 0.040”
CD Cutout Diameter 7.0 in. +/- 0.030”
MG Magnet Diameter 3.4 in. +/- 0.050”
HD Hole Diameter 0.3 in. +/- 0.020”
MD Mounting Diameter 7.7 in. +/- 0.020”
ID Internal Depth 2.7 in. Maximum
FT Flange Thickness 0.2 in. +/- 0.050”
NW Net Weight 1006.4 g
ceramic