Specifications, Architect's and engineer's specifications – Altec Lansing 403A User Manual
Page 2
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SPECIFICATIONS
Power Rating:
Frequency Response;
Pressure Sensitivity:
Impedance:
Nominal Free-Air
Cone Resonance:
Voice Coil Diameter:
12 watts
70-11,000 Hz
95 dB SPL measured at 4' on
axis with 1 watt input of
band-limited pink noise
from 500-3000 Hz. Equal to
EIA rating of 48 dB SPL at 30'
with 1 milliwatt input (Ref.:
0 dB = 0.0002 dyne/cm^)
8 ohms
80 Hz
1
"
Magnet Structure-
Magnet Type;
Flux Density:
Magnet Weight:
Dimensions:
Weight:
Mounting Data —
Mounting Hole
Diameter:
Mounting Bolt
Centers:
Alnico V
9000 gauss
6.80 ounces
S X e ' (21.11 cm) diameter
4" (10.16 cm) deep
3 pounds (1.36 kg)
7'/e" (18.10 cm)
4 holes equally spaced on
7%" (19.69 cm) diameter
circle
ARCHITECT'S AND ENGINEER'S SPECIFICATIONS
The loudspeaker shall be in diameter and 4" deep. The voice coil shall have a diameter of 1" and
shall operate in a magnetic field of at least 9000 gauss derived from an Alnico V magnet weighing at
least 6.80 ounces. The loudspeaker shall meet the following performance criteria. Power rating, 12
watts. Frequency response, uniform from 70-11,000 Hz. Pressure sensitivity, 95 dB SPL measured at
4' on axis with 1 watt input of band-limited pink noise from 500-3000 Hz. Impedance, 8 ohms.
Nominal free-air cone resonance, 80 Hz. Weight, 3 pounds.
The loudspeaker shall be the ALTEC Model 403A.
1515 SOUTH MANCHESTER AVENUE, ANAHEIM, CALIFORNIA 92803
Litho in U.S.A. 375-.
sk
AL-1447-5