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Model #57RF04M-1

57RF04M-1
Key Features:
  • 2.2" (57mm), 4 Ohm
  • Voice Range, 3 Watts
  • Ferrite Magnet, Mylar Cone;

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Product Specifications & Parameters

Primary Specifications

 
Speakers EnvironmentOutdoor
ROHS CompliantNo

Technical Specifications

UNIT of MEASURE
Nominal Basket Diameter 2.2 / 57.0 inch / mm
Rated Impedance4 ohms
Rated Power3 Watts
Program Power6 Watts
Frequency Range600 - 19000 Hz
Sensitivity
(2.83 V input measured at 1 Meter)
86dB SPL
Voice Coil Diameter0.6 / 15.2inch / mm
Magnet Weight1.7 / 48oz / gr

Small Signal Parameters

UNIT of MEASURE
Resonant Frequency (fo)600Hz
D.C. Resistance (Re)5.0ohms
Mechanical Q (Qms)7.8
Electrical Q (Qes)3.41
Total Q (Qts)2.37
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
ConeMylar
Cone EdgeMylar
Dust CapMylar

Sensitivity / Frequency

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Drawing

ID Description MeasurementsTolerance
OD Outside Diameter 2.3 in. +/- 0.020”
CD Cutout Diameter2.0 in. +/- 0.020”
MG Magnet Diameter1.8 in. +/- 0.050”
HD Hole Diameter +/- 0.010”
MD Mounting Diameter +/- 0.010”
ID Internal Depth0.8 in. +/- 0.025”
FT Flange Thickness 0.1 in. +/- 0.050”
NW Net Weight114.0 g
ceramic

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