Altec Lansing DTS645-8AF User Manual
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DTS645-8AF
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16 Duplex® Loudspeaker
KEY SYSTEM FEATURES
Duplex Technology System (DTS™)
III Vented Bass Duplex® Horn System.
High Output Capability
III Maximum Output: 133 clB SPL.
High Sensitivity
III High Frequency: 109 ciB SPL.
Ill Low Frequency: 104 dB SPL.
Extensive Power Handling
III High Frequency: 300 watts.
Ill Low Frequency: 800 watts.
Excellent Directivity Control
III 60° Horizontal by 40° Vertical.
True Point Source
III Smooth Transition.
Multiple Arraying Configurations
ill Flexible Trapezoidal Cabinet Design.
Safety Tested Flying System
III 552 lb. Capacity (in excess of 8:1 S.F.)
DESCRIPTION
The permanent installation of compact, "packaged"
loudspeakers in architectural spaces has grown increas
ingly popular in recent years. Sound system designers
sparked this popularity through their increased creation of
high output, concert quality loudspeaker systems. These
systems provide a level of quality desired by the perform
ing arts and touring sound industries. The introduction of
trapezoidal enclosures enable sound system designers to
locate more loudspeakers in a smaller physical space,
thereby increasing output and creating an effective "point
source" cluster.
While most of these systems reproduce amplified
music with the intensity and wide bandwidth suitable for
concert quality reproduction, they typically lack the direc
tivity to provide highly intelligible, natural sounding speech
with adequate gain-before-feedback. This compromise is
completely unacceptable in a performing arts center or
house of worship.
The Altec Lansing DTS645-8AF loudspeaker was
created to provide high output levels for full-range music
reproduction while offering a very directive output for
highly intelligible speech in even the most reverberant ar
chitectural spaces. Altec Lansing's engineers have created
a new Duplex® coaxial loudspeaker which physically aligns
the high and low frequency drivers creating a true point
source device. This concept is the driving force behind the
DTS-series of arrayable loudspeaker devices.
Complementing the DTS645-8AF's powerful
performance is a trapezoidal cabinet which allows for
flexible arraying. The integral L-track flying hardware
facilitates quick, easy, and repeatable installations.
DTS645-8AF SPECIFICATIONS (unprocessed)
System Type:
Pressure Sensitivity:
HI.:
L.F.:
Frequency Response:
Useahle:
Power Handling:
H.F. (1 kH7 to in kHz):
L.F. (.SO Hz to 4 kl Iz):
Maximum Output:
HI.:
LI.:
Crossover Frequency: 1 kHz recommended.
Impedance:
HI.:
LI.:
Components:
Vented hass horn type, two-way full-range loudspeaker system.
(.see note 1)
109 dB SPL (1 watt, 1 kHz to 10 kHz, re: 20 uPa).
104 dB SPL (1 watt, 125 Hz to 1 kHz, re: 20 uPa).
(see note 2)
50 Hz - 18 kHz.
(see note 3)
300 watts, peak power.
150 walls, continuous program.
75 walls, AES method.
800 watts, peak power.
400 walls, continuous program.
200 walls, AES method.
(see note 4)
134 dB SPL, peak power.
131 dB SPL, continuous program.
128 dB SPL, AES method.
133 dB SPL, peak power.
130 dB SPL, continuous program.
127 dB SPL, AES method.
8.0 ohms minimum.
7.0 ohms minimum.
8.0 ohms nominal.
16 inch, high-efficiency. Duplex® loudspeaker.
MEASUREMENT
NOTES
1. Pink noise signol, one Watt colculoted using EyZmin, 3.16 metermeasurement distance referred to
one meter.
2. On-axis, one Wott colcuinted using
EVZmin, 3.16 meter-measure
ment distance referred to one
meter, low frequencies corrected
for anechoic chamber error.
3. This system rating patterned after
the AES method for individual
driver, where the test signal is
pink noise with o 6 dB crest factor
over the bandwidth of the system,
with power colculoted using the
EyZmin, for two hours.
Input Terminals: Large screw terminals, Speakon ' connector.
Flying System: L-track accepts Aerotiuip 32102 fittings.
Accessory Hardware: Grid Strap Part # C^S-IA, 10" Linkstrap Part # LS-IA, 12" Linkstrap
Part # LS-2A.
Suspension Data: To insure a proper safety factor, Altec Lansing recommends the
units not be stacked over four (4) high.
Recone Kit:
Diaphragm Replacement: 25884.
Replacement Crille: Model RG039105.
Enclosure: Vented bass horn type, built of 14-ply birch plywood with
Finish: Black texture paint with black metal grille.
Dimensions:
Fleight:
Width:
Depth:
Weight:
Net:
Shipping:
R9864-8ALE.
appropriate bracing. Lined with glass wool.
24.53 inches (62.31 centimeters).
26.67 inches (67.74 centimeters).
25.0 inches (63.5 centimeters).
138.0 (rounds (62.60 kilograms).
178.0 (rounds (80.74 kilograms).
4. This measurement made under
the same conditions as Pressure
Sensitivity, but at rated power,
and takes into occount any power
compression effects due to nonlinearities in the system.
Distortion components invalid
above 10 kHz. The distortion at
any given frequency may be
found by graphically taking the
difference between the fundamen
tal and harmonic, and adding the
number of Decibels which the hor-
monic has been raised on the
groph and apply the formula:
% distortion = 100 X
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