Altec Lansing 9845A User Manual
9845A MONITOR/PLAYBACK
SOUND PRODUCTS DIVISION
SPEAKER SYSTEM
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DESCRIPTION
The ALTEC 9845A Monitor/Playback Speaker
System is designed for applications where
extended frequency response, low distortion,
maximum sensitivity and wide dynamic range
are required. The bass loudspeaker is capable of
producing excellent low-frequency response
with minimal input power. The dividing network
has a switchable shelving adjustment from 0 dB
to —6 dB in 1.5 dB steps. Frequencies above
500 Hz are handled by a compression driver
mounted on a sectoral high-frequency horn.
The housing is a ported enclosure constructed
of %-inch material. It is heavily braced internally
and lined with acoustic damping material. The
enclosure is finished in gray lacquer and includes
a complementary black grille cloth.
Typical applications for the 9845A include
recording studio control room monitoring,
remix studios, mastering rooms, audition rooms,
broadcast studio monitoring and playback, audi
toriums, nightclubs, conference rooms, theatres,
and church sound reinforcement systems.
SPECIFICATIONS
Speaker
Components:
Power Capacity:
Frequency Response:
Impedance:
Pressure Sensitivity:
Equivalent EIA
Rating:
416A 15" Bass Driver
51 IB Sectoral Horn
806A HF Compression
Driver
N500G Dividing Network
Up to 50 watts pink noise,
band-limited from 35 Hz
to 20,000 Hz
35 Hz to 20,000 Hz
16 ohms
97 dB SPL measured at 4'
on axis with 1 watt input
of pink noise band-limited
from 500 Hz to 3000 Hz
114 dB SPL measured at 4'
on axis with 50 watts input
of pink noise band-limited
from 500 Hz to 3000 Hz
50 dB SPL measured at 30'
with 1 mW input
Distribution Pattern:
Crossover Network: 500 Hz with 12 dB/octave
Input Connections:
Enclosure Type:
Finish:
Dimensions:
Shipping Weight: 170 pounds (77.1 kg)
Actual Weight:
90° horizontal by 60°
vertical (—6 dB included
angles)
crossover slope with
switchable shelving
control 0 dB to —6 dB in
1.5 dB steps, located on
front panel
Thumb-screw type,
located on rear panel
Vented
Studio gray lacquer
28" (71.1 cm) H x40"
(101.6 cm) Wx24'/2"
(62.2 cm) D
130 pounds (59.1 kg)
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ARCHITECT'S AND ENGINEER'S SPECIFICATIONS
The monitor/playback speaker system shall be of the two-way type and shall consist of a 15" lowfrequency loudspeaker, a compression driver mounted to a high-frequency sectoral horn, and a 500
Hz, 16-ohm dividing network. The system shall meet the following criteria. Power rating, 50 watts
pink noise. Frequency response, from 35 Hz to 20,000 Hz. Impedance, 16 ohms. Pressure sensitiv
ity, 97 dB SPL when measured at 4' on axis with 1 watt input of pink noise from 500 Hz to 3000 Hz.
Distribution pattern, 90° horizontal by 60° vertical. Crossover network, 500 Hz with 12 dB/octave
slope with shelving control variable from 0 dB to —6 dB in 1.5 dB steps. The enclosure shall be con
structed of ^4" material, heavily braced internally and lined with acoustic damping material. Finish
shall be gray lacquer. Dimensions, 28" H x 40" W x 24V2" D. Weight, 130 pounds.
The monitor/playback speaker system shall be the ALTEC Model 9845A.
LITHO IN U.S.A. CP-775-5K
1515 SOUTH MANCHESTER AVENUE, ANAHEIM, CALIFORNIA 92803
AL-1756-2
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