Altec Lansing Cone 405A User Manual

405A Dia - Cone Loudspeaker

T.M.

40SA

Features:

10 Watts Rating

90° Distribution Angle

60-15,000 Hz Response

4" Speaker

Water Resistant Cone

Thin Profile for Shallow Mounting

High Sensitivity and Efficiency

with Indox V Magnet

Front or Rear Mounting

EIA Standard Mounting for

Square Shaped Speakers

Low Cost

Smooth Frequency Response

Ideal for Multiple Installations

Distortion Free Under

High Humidity

HIGH QUALITY PA AND BACKGROUND MUSIC SYSTEM SPEAKERS
IDEAL FOR LOW LEVEL INSTITUTIONAL USES, BUSES, CRUISERS,

AIRPORT SOUND SYSTEMS, COMMERCIAL AND PRIVATE AIRCRAFT,

CHURCH PEWS, NARROW FACIA BOARD

— PEAK PERFORMANCE IN A LIMITED MOUNTING SPACE —

The Altec 405A Speaker is an extremely shallow, very compact 4" speaker
that provides true high fidelity reproduction. Using an Indox V magnet
with a flux density of 10,250 gauss, the damped, high compliance cone pro
vides low frequency reproduction and smooth, extended frequency response
equal to most larger speakers. The compact size of the 405A Speaker makes
it ideal for public address systems in airports, buses, ships, aircraft, church
pews and any installation that has need for a low level distribution system
for wired music, program distribution and paging systems. Very smooth dis
tribution is provided over a wide angle of 90° without high frequency loss.
The wide angle of distribution, plus the small size of the unit allows greater
separation between speakers with a substantial savings in speakers required.
Clear, intelligible speech and good music reproduction is assured because
of the extended 60 to 15,000 Hz range.

Made of heavy grade steel, the entire 405A unit is designed for continuous,
trouble-free service. The small size of the speaker, 4%" square by 214" deep
make it possible to either front mount or rear mount the speaker in wall, par
titions or ceilings and into volumes as low as 0.1 cubic feet. The solid, welded
construction and water-resistant cone of the 405A prevents distortion in areas
of high humidity.

In line with other Altec speakers, the famed experience and engineering
"know-how" has been built into the 405A Speaker, to make it the highest
quality 4" loudspeaker available.

ALTEC

LANSING®

A Divmon of [yir*W TAng Altec, Inc.

1515 S. Manchester Ave., Anaheim, Calif. 92803

New York

ALTEC 405A

SPECIFICATIONS

Power:

Frequency Response:

Pressure Sensitivity:

10 Watts music power Flux:

60-15,000 Hz Terminals:

92 dB (SPL at 4 ft.) from

1 Watt*

E.I.A. Sensitivity: 45 dB

Impedance:

8 Ohms

Cone Resonance: 95 Hz

Voice Coil Diameter: 1"

Distribution: 90°

Magnet: Type Indox V

Structure weight

1% lbs.

10,250 gauss

Solder lug type

Size:

Mounting Data: Baffle opening

4% X 4% (square) x 214
deep

diameter — Rear

mounted

front mounted

Mounting bolt

centers (4) equally spaced holes

at 90° on 4%" diameter
circle (.200 dia. holes)

Weight;

*equivalent to EIA rating of 45 dB at 30 feet from 1 milliwatt

2% lbs.

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LITHO IN U.S.A. CP-48-5K

ARCHITECTS AND ENGINEER SPECIFICATIONS

The speaker shall be 4'%" square and shall have a sensitivity of 92 dB (SPL at 4 ft.
from 1 Watt) measured on axis. The loudspeaker shall have a nominal impedance of
8 Ohms and a pov/er rating of not less than 10 Watts with the frequency response

uniform over the range of 60 to 15,000 Hz. Free air resonance shall not be higher
than 70 Hz.

The voice coil shall have a diameter of 1" and shall operate in a magnetic field of at

least 10,250 gauss derived from a magnet of Indox V having a weight of 1% lbs. The

speaker terminals shall be of the solder lug type. The speaker shall weight 2% lbs. and
shall be able to perform efficiently in a volume as low as 0.1 cubic feet. It shall have a
solid, welded construction and water resistant cone (to prevent distortion in high humidity
areas).
Any loudspeaker not meeting these requirements shall not be acceptable under this
specification.

The loudspeaker shall be Altec Lansing Model 405A.

Specifications and components subject to change without
notice. Overall performance will be maintained or improved.

AL-1716

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