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Model #66RF45

66RF45
Key Features:
  • 2.5" (66mm), 45 Ohm
  • Voice Range, 500 Milliwatts
  • Ferrite Magnet, Paper Cone;

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Product Specifications & Parameters

Primary Specifications

 
Speakers EnvironmentIndoor
ROHS CompliantNo

Technical Specifications

UNIT of MEASURE
Nominal Basket Diameter 2.5 / 66.0 inch / mm
Rated Impedance45 ohms
Rated Power0 Watts
Program Power1 Watts
Frequency Range340 - 5000 Hz
Sensitivity
(2.83 V input measured at 1 Meter)
84dB SPL
Voice Coil Diameter0.6 / 15.2inch / mm
Magnet Weight10.0 / 284oz / gr

Small Signal Parameters

UNIT of MEASURE
Resonant Frequency (fo)340Hz
D.C. Resistance (Re)43.9ohms
Mechanical Q (Qms)7.7
Electrical Q (Qes)10.98
Total Q (Qts)4.52
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 Size0.12 X 0.02
MagnetFerrite
Voice Coil WireCopper
Voice Coil FormPaper
ConePaper
Cone EdgePaper
Dust CapPaper

Sensitivity / Frequency

http://s3.amazonaws.com/misco/curves/66RF45.JPG

Drawing

ID Description MeasurementsTolerance
OD Outside Diameter 2.6 in. +/- 0.020”
CD Cutout Diameter2.4 in. +/- 0.020”
MG Magnet Diameter1.3 in. +/- 0.050”
HD Hole Diameter +/- 0.010”
MD Mounting Diameter +/- 0.010”
ID Internal Depth0.7 in. +/- 0.025”
FT Flange Thickness 0.1 in. +/- 0.050”
NW Net Weight55.0 g
ceramic

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