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Model #66SF04-1SH

66SF04-1SH
Key Features:
  • 2.5" (66mm) 4 ohm Full Range 2 watts Ferrite magnet paper cone with pre-treated black cloth surround RoHS Compliant

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Product Specifications & Parameters

Primary Specficiations

 
Speakers EnvironmentIndoor
ROHS CompliantYes

Technical Specifications

UNIT of MEASURE
Nominal Basket Diameter 2.5 / 66.0 inch / mm
Rated Impedance4 ohms
Rated Power2.0 Watts
Program Power4 Watts
Frequency Range250 - 18000 Hz
Sensitivity
(2.83 V input measured at 1 Meter)
87dB SPL
Voice Coil Diameter0.6 / 15.2inch / mm
Magnet Weight1.7 / 48.0oz / gr

Small Signal Parameters

UNIT of MEASURE
Resonant Frequency (fo)250Hz
D.C. Resistance (Re)3.6ohms
Mechanical Q (Qms)
Electrical Q (Qes)
Total Q (Qts)
Compliance Equivalent Volume (Vas) ltr
BL Product (BL) T-M
Maximum Linear Excursion (Xmax) mm
Surface Area of Cone (Sd) cm2

Material Descriptions

 
BasketStamped Steel
Terminal Size
MagnetFerrite
Voice Coil WireCopper
Voice Coil Form
ConePaper
Cone EdgePre-treated Black Cloth
Dust Cap

Drawing

ID Description MeasurementsTolerance
OD Outside Diameter +/- 0.020”
CD Cutout Diameter +/- 0.020”
MG Magnet Diameter +/- 0.050”
HD Hole Diameter +/- 0.010”
MD Mounting Diameter2.9 in. +/- 0.010”
ID Internal Depth +/- 0.025”
FT Flange Thickness +/- 0.050”
NW Net Weight
ceramic

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