Altec Lansing 3154 User Manual

DESCRIPTION

The Altec Lansing Model 3154 15-inch low-

frequency loudspeaker is part of Altec's new
generation of woofers. Each loudspeaker in this

line was engineered for a particular purpose.
The 3154 is designed specifically for the repro
duction of low frequencies with minimum
distortion in a direct radiator enclosure.

When used as an integral component of the
8154 Loudspeaker System (6-cubic foot vented
enclosure), full capability of the 3154 is
achieved. This system provides a 3 dB down

frequency of 40 Hz with an optimum Thiele­Small alignment.

Power capacity for the 3154 is 250 watts when
measured by the new AES standard specifica

tions. The 3154 will handle 500 watts of program

material when configured as the 8154 system, or
mounted in another suitable enclosure.

As with all Altec professional series woofers, the
3154 is built with a structurally reinforced die­cast frame. The ferrite magnet structure coupled
with an exceptionally high power voice coil pro
vides low distortion even at very high sound

pressure levels.

3154 LOW FREQUENCY

LOUDSPEAKER

SPECIFICATIONS

Frame Diameter;

•Power Rating:

Frequency Response (Hz):
Pressure Sensitivity

(1 watt (E X I) with pink
noise band-limited
100-1000 Hz): 93 dB at 4 feet

••Maximum Sound

Pressure (Full power
(EVZ) with pink noise
band-limited

40-400 Hz):

Impedance: 8 ohms nominai
Recommended System;

Maximum Excursion
Before Damage

(Peak to Peak);

Voice Coil Diameter;
Thiele-Small Parameters—

Free-Air Resonance (fs): 25 Hz
Equivalent Volume

Compliance (Vas):

Total Q (Qts):

Electrical Q (Qes):
Mechanical Q (Qms):
Reference Efficiency (r)o):1.5%
D. C. Resistance (Rs): 6.4 ohms
Peak Linear

Displacement (Xuax):
Peak Linear Volume

Displacement (Vd):
Effective Surface Area

of Driver Diagram (So):

Additional Parameters—

Effective Piston
Diameter: 12.75 in.

Voice Coil Inductance: 4.5 mH
BL Factor:
Magnet Type;
Magnet Weight; 48 oz.
Flux Density:

Mounting Information —

Baffle Opening

Diameter:

Mounting Bolt Circle

Diameter; 15" (38.1 cm)
Loudspeaker Depth

(front mounting);
Loudspeaker Depth

(rear mounting); W (16.20 cm)

Weight:

•AES power rating measured EVZ where E = 45V, 2 = 8^,
band-limited 40-400 Hz.

(AES Recommended Practice Specification of Loudspeaker
Components Used in Professional Audio and Sound Reinforce
ment. See |. Audio Eng. Soc., Vol. .30, No. 3, 1982 March.)

**ln 8154X Enclosure.

16"

500 watts prograir
250 watts continui
noise band-limite

30-2000

95 dB at 1 meter

115 dB at 4 feet
117 dB at 1 meter

8154 (6 ft=)
System Fj: 40 Hz

1.54 in.

3 in.

13.9 ft’

0.33

0.38

2.12

0.25 in.

.31.9 in.’

128 in.’

16.2
ferrite

10,000 gauss

14Vo" (35.87 cm)

5%" (14.13 cm)

23.1 lbs (10.5 kg)

LOUDSPEAKER MOUNTING DIMENSIONS

(A) Loudspeaker Diameter: 16" (40.64 cm)

(Bf) Depth When Front Mounted: 5%" (14.13 cm)
(Br) Depth When Rear Mounted: 6%" (16.20 cm)

ARCHITECT'S AND ENGINEER'S SPECIFICATIONS

The low frequency loudspeaker shall meet the fol

lowing criteria. AES power rating, up to 250 watts

of band-limited pink noise (40-400 Hz). Frequency

response, uniform from 30-2000 Hz when mounted
in a suitable enclosure. Pressure Sensitivity, 94 dB SPL
when measured at 1 meter on axis from front edge of
Altc Model 8154 Loudspeaker System (containing
one Model 3154 speaker) with one watt of band

ALTTEIO

LANSING

1250 NORTH RED GUM STREET, ANAHEIM, CALIFORNIA 92806

ALTEC CORPORATION

(C) Baffle Opening Diameter: 14Va" (35.87 cm)
(D) Bolt Circle Diameter: 15" (38.1 cm)
(E) Bolt Hole Slots: (0.64 cm) x (2.02 cm);

8 slots spaced 45° apart.

limited pink noise from 100-1000 Hz (Ref.: 0.0002

dyne/cm^). Minimum impedance, 8 ohms. Nominal
free-air LF cone resonance, 25 Hz. The voice coil shall
be 3" in diameter, driven by a ferrite magnet having
a flux density of 10,000 gauss. Dimensions, 16" diam
eter X 6Ув" deep. Weight, 23.1 pounds.

The low frequency loudspeaker shall be the ALTEC
LANSING Model 3154.

LITHO IN U.S.A. 1283-5M

Revision 4

AL-2417

42-02-024904