87SF08M-1
Key Features:
  • 3.5" (87mm), 8 ohm
  • Voice Range, 4 watts
  • Ferrite magnet, Mylar cone with Mylar surround
  • RoHS compliant

Primary Specifications

Speakers Environment Outdoor
ROHS Compliant Yes

Technical Specifications

UNIT of MEASURE
Nominal Basket Diameter 3.5 / 87.0 inch / mm
Rated Impedance 8 ohms
Rated Power 4.0 Watts
Program Power 10 Watts
Frequency Range 500 - 7000 Hz
Sensitivity
(2.83 V input measured at 1 Meter)
90 dB SPL
Voice Coil Diameter 0.7 / 17.8 inch / mm
Magnet Weight 3.5 / 99 oz / gr
Transformer

Small Signal Parameters

UNIT of MEASURE
Resonant Frequency (fo) 493 Hz
D.C. Resistance (Re) 7.4 ohms
Mechanical Q (Qms) 19.8
Electrical Q (Qes) 4.67
Total Q (Qts) 3.78
Compliance Equivalent Volume (Vas) 0.1 ltr
BL Product (BL) 3.0 T-M
Maximum Linear Excursion (Xmax) mm
Surface Area of Cone (Sd) 38.0 cm2
Moving Mass (Mmd) g

Material Descriptions

 
Basket Stamped Steel
Terminal Size 0.110 X 0.02
Magnet Ferrite
Voice Coil Wire Copper
Voice Coil Form Aluminum
Cone Mylar
Cone Edge Mylar
Dust Cap Mylar
http://s3.amazonaws.com/misco/curves/87SF08M-1.JPG?1345609743
ID Description Measurements Tolerance
OD Outside Diameter 3.4 in. +/- 0.040”
CD Cutout Diameter 3.1 in. +/- 0.030”
MG Magnet Diameter 2.3 in. +/- 0.050”
HD Hole Diameter 0.3 in. +/- 0.020”
MD Mounting Diameter 3.9 in. +/- 0.020”
ID Internal Depth 1.15 in. Maximum
FT Flange Thickness 0.15 in. +/- 0.050”
NW Net Weight 311.0 g
ceramic