123ON08-1
Key Features:
  • 1.2" X 4.7" (30 X 120 mm), 8 ohm
  • Full Range, 4 watt
  • Neodymium magnet, paper cone with cloth surround
  • RoHS Compliant;

Primary Specifications

Speakers Environment Indoor
ROHS Compliant Yes

Technical Specifications

UNIT of MEASURE
Nominal Basket Diameter 1.2 x 4.7 / 30.0 x 120.0 inch / mm
Rated Impedance 8 ohms
Rated Power 4.0 Watts
Program Power 8 Watts
Frequency Range fo - 14000 Hz
Sensitivity
(2.83 V input measured at 1 Meter)
85 dB SPL
Voice Coil Diameter 0.5 / 12.7 inch / mm
Magnet Weight 0.1 / 2 oz / gr
Transformer

Small Signal Parameters

UNIT of MEASURE
Resonant Frequency (fo) 250 Hz
D.C. Resistance (Re) 6.5 ohms
Mechanical Q (Qms) 3.76
Electrical Q (Qes) 4.17
Total Q (Qts) 1.98
Compliance Equivalent Volume (Vas) 0.2 ltr
BL Product (BL) 1.35 T-M
Maximum Linear Excursion (Xmax) 0.6 mm
Surface Area of Cone (Sd) 20.0 cm2
Moving Mass (Mmd) g

Material Descriptions

 
Basket Stamped Steel
Terminal Size .205 X .02 / .110 X .02
Magnet Neodymium
Voice Coil Wire Copper
Voice Coil Form Paper
Cone Paper
Cone Edge Cloth
Dust Cap Paper
http://s3.amazonaws.com/misco/curves/123ON08-1.JPG
ID Description Measurements Tolerance
OD Outside Diameter 1.2 in. +/- 0.040”
CD Cutout Diameter 1.2 in. +/- 0.030”
MG Magnet Diameter 0.87 in. +/- 0.050”
HD Hole Diameter 0.16 in. +/- 0.020”
MD Mounting Diameter 0.8 in. +/- 0.020”
ID Internal Depth 1.1 in. Maximum
FT Flange Thickness 0.1 in. +/- 0.050”
NW Net Weight 49.0 g
neodymium