Altec Lansing DTS-640 - Manual (Page 6)

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Altec Lansing DTS-(340 Duplex® Loudspeaker System 1
Specifleations
Maximum Long-Term Output, Replacement LF:
HF (1.6-20 kHz, 60 watts input): 815-1317
System Type:
130 dB SPL* Replacement MF:
Three-way, all-hom-loaded, full-range
MF (210-1,600 Hz, 300 watts input): 81.0-2779
loudspeaker system; triamp or biamp
128.5 dB SPL' Replacement HF:
using internal passive crossover"
LF (60-210 Hz, 400 watts input): 835-2810
Pressure Sensitivity,
128 dB SPL’ Replacement Grille:
HE (1.6-20 kHz):
Impedance, 83965
113 dB SPL^
HF: Enclosure:
MF (210-1,600 Hz):
6.8 ohms minimum Horn-loaded LF and MF, built of 19-mm
104 dB SPU
8.0 ohms nominal (0.75-in.), 14-ply birch plywood with
LF (60-210 Hz):
MF: appropriate bracing, lined with glass
l02dB SPL^
8.5 ohms minimum wool; four point hanging system
Frequency Response (see Figure 2):
8.0 ohms nomimal included
60-20,000 Hz'
LF: Dimensions:
Beamwidth,
8.1 ohms minimum 838 mm (32.8 in.) high
Horizontal, 800-16,000 Hz:
8.0 ohms nominal 498 mm (19.6 in.) wide
60" (+42", -22°)
Components: 498 mm (19.6 in.) deep
Vertical, 400-16,000 Hz:
HF: Net Weight:
40° (+62°, -2°)
Neodymium driver with 25.4-mm (1 -in.) 41.8 kg (92.0 lb)
Directivity Factor, R^ (Q), 800-16,000 Hz:
exit Shipping Weight:
16.6 (+8.5, -8.7)
MF: 47.3 kg (104.0 lb)
Directivity Index, D,, 800-16,000 Hz:
High-efficiency 254-mm (10-in.) cone Finish:
12.2 dB (+1.8 dB.-3.2 dB)
driver Black textured paint with black 16-
Power Handling, Long Term:
LF: gauge powder-coated grille
HF (1.6-20 kHz):
High-efficiency 381-mm (15-in.) Accessories:
60 watts'
woofer Four Ancra 42546-10 single-stud tie-
MF (210-1,600 Hz):
Input Terminals: down cargo suspension fittings provided
300 watts'
LF (60-210 Hz):
400 watts'
Large screw terminals with parallel 8-
pin Neutrik Speakon® connectors with system
#
NOTES ON MEASUREMENT
CONDITIONS
1. Distortion components invalid above
10 kHz. The distortion at any given frequency
may be found by graphically taking the differ­
ence between the fundamental and harmonic,
and adding the number of decibels which the
harmonic has been raised on the graph and ap­
plying the formula:
percent distortion = lOOx lO''’'"'-"'"''- ""''*'“'
2. Pink-noise signal, one watt caleulated us­
ing E^/Zmin. 3.16-meter measurement distanee
referred to one meter.
3. On axis, one watt calculated using
E-/Zmin. 3.16-meter measurement distance re­
ferred to one meter, low frequencies correeted
for anechoic-chamber error.
4. This system rating patterned after the ANSI/
El A RS-426-A 1980 method where the test sig­
nal is pink noi.se with a 6-dB crest factor over
the bandwidth of the system, with power cal­
culated using E^/R
k X 1.15. for8 hours(where
E is the RMS test voltage and R e is the dc re­
sistance of the woofer voice coil).
5. This measurement made under the same con­
ditions as pressure sensitivity, but at rated
power, and takes into account any power-com­
pression effects due to nonlinearities in the sys­
tem.
6. For switching from bi-amp to tri-amp mode
(or from tri-amp to bi-amp mode), the high/
mid back panel must be removed with the
directions for switching modes being located
on the back of this removed panel.
Full-Range Speaker Systems
LANSING
a Mark IV company
600 Cecil Street. Buchanan, MI 49107
800/234-6831, 616/695-6831, Fax 616/695-1304
Part Number 534091—9644