Model # 4C8CFR

Primary Specifications

Speaker Environment

Outdoor

Technical Specifications

Units of Measure

Nominal Basket Diam

Rated Impedance

Rated Power

Program Power

Frequency Range

Sensitivity

Voice Coil Diam

Magnet Weight

Transformer

4.11 / 104.0

  8

  10.0

 

  250 to 8000

  86

  0.75 / 19.0

  1.0 / 28

inch / mm

ohms

watts

watts

Hz

dB SPL

inch/mm

oz/g

Material Descriptions

Basket

Terminal Size

Magnet

Voice Coil Wire

Steel

0.187 by 0.022

Alnico

copper

Small Signal Parameters

Units of Measure

Resonant Frequency (fo)

D.C. Resistance (Re)

Mechanical Q (Qms)

Electrical Q (Qes)

Total Q

Compliance Equiv Vol (Vas)

BL Product (BL)

Max Linear Excursion (Xmax)

Surface Area of Cone (Sd)

Moving Mass (Mmd)

310

7.2

Hz

ohms

 

 

 

ltr

T-M

mm

cm2

g

Voice Coil Form

Cone

Cone Edge

Dust Cap

aluminum

felted paper

felted paper

felt cloth

Model No.: 4C8CFR

KEY FEATURES

  • 4" (102 mm), 8 ohm
  • Voice Range, 10 watt
  • Alnico magnet, felted paper cone
  • NSN 596501145102
  • used in military cargo aircraft
http://s3.amazonaws.com/misco/curves/4C8CFR.JPG?1492700855

ID    Description    Measurements    Tolerance

OD

CD

MG

HD

MD

ID

FT

NW

Outside Diam

Cutout Diam

Magnet Diam

Hole Diam

Mounting Diam

Internal Depth

Flange Thick.

Net Weight

  4.11

  4.1

  1.1

  0.2

  4.69

  1.39

  0.04

  121.0 g

+/- 0.020"

+/- 0.020"

+/- 0.050"

+/- 0.010"

+/- 0.010"

+/- 0.025"

+/- 0.050"