70009
Key Features:
  • 3" (76mm), 4 ohm
  • Woofer, 10 watts
  • Ferrite magnet
  • Flat Radiating Diaphragm
  • Polypropylene Cone and Dustcap

Primary Specifications

Speakers Environment Indoor
ROHS Compliant Yes

Technical Specifications

UNIT of MEASURE
Nominal Basket Diameter 3.27 / 83.0 inch / mm
Rated Impedance 4 ohms
Rated Power 10.0 Watts
Program Power 25 Watts
Frequency Range 60- 10,000 Hz
Sensitivity
(2.83 V input measured at 1 Meter)
76 dB SPL
Voice Coil Diameter 0.8 / 20.3 inch / mm
Magnet Weight 4.8 / 136 oz / gr
Transformer

Small Signal Parameters

UNIT of MEASURE
Resonant Frequency (fo) 59 Hz
D.C. Resistance (Re) 3.4 ohms
Mechanical Q (Qms) 1.91
Electrical Q (Qes) 0.54
Total Q (Qts) 0.42
Compliance Equivalent Volume (Vas) 1.3 ltr
BL Product (BL) 4.36 T-M
Maximum Linear Excursion (Xmax) 0.7 mm
Surface Area of Cone (Sd) 28.3 cm2
Moving Mass (Mmd) 8 g

Material Descriptions

 
Basket Stamped Steel
Terminal Size 0.205 X 0.02
Magnet Ferrite
Voice Coil Wire Copper
Voice Coil Form Aluminum
Cone Polypropylene
Cone Edge Black Rubber
Dust Cap Flat Radiating Diaphragm
http://s3.amazonaws.com/misco/curves/70009.PNG?1433865116
ID Description Measurements Tolerance
OD Outside Diameter 3.27 in. +/- 0.040”
CD Cutout Diameter 2.64 in. +/- 0.030”
MG Magnet Diameter 2.8 in. +/- 0.050”
HD Hole Diameter 0.18 in. +/- 0.020”
MD Mounting Diameter 3.6 in. +/- 0.020”
ID Internal Depth 1.45 in. Maximum
FT Flange Thickness 0.23 in. +/- 0.050”
NW Net Weight 0.95 g
ceramic