L A N S I N G
a Mark IV company
DTS-640
Duplex® Loudspeaker
System
•High output capability
•Excellent directivity control
•Enclosure allows refinishing
•Three-way all-horn-loaded system
•Full triamp or biamp with internal passive crossover
Description
The Alice Lansing DTS-640 is a three-way, all-hom-loaded, factory-assembled system with a coaxial mid/high section. The sys tem can be configured as a iriamp system or as a biamp system using the internal mid/ high passive crossover.*' This compact sys tem features high sensitivity, high output ca pability and poini-.source alignment, together with excellent directivity control down to 800 Hz. The coverage at 1,000 Hz is 80° hori zontal by 75° vertical, and the system’s nomi nal coverage is 60° horizontal by 40° verti cal. The horn-loaded bass section extends the low-frequency response to below 60 Hz, or lower if multiple units are used. The DTS-640 consists of two 381-mm (15-inch) highpower, low-frequency drivers with a coaxial mid-/high-frequency section consi.sting of a high-efficiency 254-mm (10-inch) midrange driver together with a 25.4 mm (I-in.) neody mium compression driver. Both drivers uti lize 60° X 40° constant-directivity horns. Electrical connection to each driver is made by large screw terminals able to accept up to 10-gauge wire, or two parallel. 8-pin female Neulrik Speakon® connectors. The .system should be used with the Altec Lansing 2400A digital loudspeaker proces.sor. The recom mended crossover frequencies arc 210 Hz and 1.6 kHz. The enclosure is constructed
from 19-mm (0.75-in.) thick thoroughly braced 14-ply birch plywood lined with sound-absorbent glass wool. A complete four-point hanging sy.siem is provided for safe suspension of the DTS-640. The sys tem may then be hung as a single unit or as pan of a cluster. The finish of the enclosure is textured black paint which can be painted to complement any interior. The grille is con structed from 16-gauge black, powdercoated steel and is backed with a weatherresistant foam.
The DTS-640 can be used individually or in arrays to create compact, high-output and di rectivity-controlled systems for use in churche,s. auditoriums, hotels and civic centers.
Architects’ And Engineers’
Specifications
The loudspeaker system shall be of the threeway, all-hom-loaded type consisting of one 381-mm (15-in.) high-power woofer to gether with a 254-mm (10-in.) Duplex® loud speaker with a coaxially mounted 25.4-mm (1-in.) neodymium compression driver loaded with a 60° x 40° constant-directivity horn. The sy.stem shall be capable of being biamped, (using the internal pa.ssive cross over). or triamped'’. The loudspeaker system shall meet the following performance crite ria. Power handling shall be 400 watts of pink noise with 6-dB crest factor, bandlimited from
60 Hz to 210 Hz, and 350 watts bandlimited from 210 Hz. to 20 kHz. Frequency response shall be smooth and unifomily usable from 60 Hz to 20 kHz. Pressure sensitivity shall be 103 dB SPL when measured at one meter on axis with one wall of bandlimited pink noise from 60 Hz to 20 kHz. The enclosure shall be constructed of 19-mm (0.75-in.). 14-ply birch plywood and shall be heavily braced and lined with sound-absorbent glass wool. The enclo.sure shall be finished in a textured black .paint and a removable black metal grille shall be provided. The dimensions of the enclosure shall be 838 mm (32.8-in.) high by 498 mm (19.6-in.) wide by 498 mm (19.6-in.) deep. The loudspeaker system shall weigh 41.8 kg (92.0 lb).
The loudspeaker system shall be the Altec Lansing DTS-640.
Uniform Limited Warranty Statement
Altec Lansing products are guaranteed against malfunction due to defects in materials or workmanship for a specified period, as noted in the individual product-line staiement(s) below, or in the individual product data sheet or owner’s manual, beginning with the date of original purchase. If such malfunction oc curs during the specified period, the product will be repaired or replaced (at our option) without charge. The product will be relumed to the customer prepaid. Exclusions and
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Limitations: The Limited Warranty does not apply to: (a) exterior finish or appearance;
(b) certain specific items described in the in dividual product-line statement(s) below, or in the individual product data sheet or owner’s manual; (c) malfunction resulting from use or operation of the product other than as specified in the product data sheet or owner's manual; (d) malfunction resulting from misuse or abuse of the product; or (e) malfunction occurring at any time after re pairs have been made to the product by any one other than Mark IV Audio Service or any of its authorized service representatives. Obtaining Warranty Service: To obtain warranty .service, a customer must deliver the product, prepaid, to Mark IV Audio Service or any of its authorized service representa tives together with proof of purchase of the product in the form of a bill of sale or re ceipted invoice. A list of authorized service repre.sentatives is available from Mark IV Audio Service at 10.500 W. Reno Avenue,
Oklahoma, OK 73127 (800/845-8727 or FAX 405/577-3274). Incidental and Con sequential Damages Excluded: Product re pair or replacement and return to the cus tomer are the only remedies provided to the customer. Altec Lansing shall not be liable for any incidental or consequential damages including, without limitation, injury to per sons or property or loss of use. Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply to you. Other Rights: This warranty gives you specific legal rights, and you may akso have other rights which vary from state to state.
Altec Lansing Speakers and Speaker Sys tems are guaranteed against malfunction due to defects in materials or workmanship for a period of five (5) years from the date of origi nal purchase. The Limited Warranty does not apply to burned voice coils or malfunctions such as cone and/or coil damage resulting
from improperly designed enclosures. Altec Lansing active electronics associated with the speaker systems are guaranteed for three
(3) years from the date of original purchase. Additional details are included in the Uni form Limited Warranty statement.
Altec Lansing Accessories are guaranteed against malfunction due to defects in mate rials or workmanship for a period of one (1) year from the date of original purchase. Ad ditional details are included in the Uniform Limited Warranty statement.
For technical assistance, contact Technical Sup port at 800/234-6831 or616/695-6831,M-F.8;00 a.m. to 5;(X) p.m. eastern standard time.
Specifications subject to change without notice.
Figure 1—DTS-640 Polar Response |
|
Horizontal* |
(one-third-octave bands of pink noise) |
|
------------ Vertical* |
|
3oo; |
300; |
270” |
270' |
270' |
|
240' |
240' |
270' |
270' |
240' |
240' |
180° |
IftO' |
630 Hz |
1 kHz |
Long enclosure axis vertical
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