FREQUENCY RESPONSE
1, 2
110 Hz - 15 kHz (±3 dB)
USABLE LOW FREQUENCY LIMIT (-10 dB)
1, 2
85 Hz
SENSITIVITY
3
Full Range:
102 dB SPL
Low Frequency Section:
103 dB SPL, (2.83 V input)
High Frequency Section:
109 dB SPL, (2.83 V input)
POWER HANDLING
4
Full Range:
400 W continuous; 1,600 W peak
Low Frequency Section:
200 W continuous; 800 W peak
High Frequency Section: 75 W continuous; 300 W peak
MAXIMUM OUTPUT (1 m)
5
Full Range: 128 dB SPL continuous; 134 dB SPL peak
Low Frequency Section: 126 dB SPL continuous; 132 dB SPL peak
High Frequency Section: 128 dB SPL continuous; 134 dB SPL peak
COVERAGE ANGLES
6
60
o
(horizontal) x 40
o
(vertical)
DIRECTIVITY FACTOR, Q
6
18.73
DIRECTIVITY INDEX, Di
6
12.73 dB
TRANSDUCER COMPONENTS
LF:
1x 12 in. Woofer in a Sealed Mid-Bass Horn (E1012)
HF:
1x 1.4 in. Exit Compression Driver (E1012 on a
Constant Directivity Mantaray
™
Horn)
IMPEDANCE
7
Full Range:
Nominal:
8.0
Ω
Minimum:
6.6
Ω
at 140 Hz
Low Frequency:
Nominal:
8.0
Ω
Minimum:
7.3
Ω
at 290 Hz
High Frequency:
Nominal:
8.0
Ω
Minimum:
7.2
Ω
at 3,700 Hz
CROSSOVER FREQUENCY
Passive LF - HF:
950 Hz
HARMONIC DISTORTION
8
1% rated power
2nd Harmonic
0.98%
3rd Harmonic
0.34%
THD
1.03%
10% rated power
2nd Harmonic
2.96%
3rd Harmonic
0.74%
THD
2.90%
INPUT CONNECTIONS
2x 4 position barrier strip and 2x NL4
CONTROLS
Lowpass On/Off and Highpass On/Off switches
ENCLOSURE MATERIALS & FINISH
18 mm, 13 ply Birch Plywood Finished with Charcoal Grey
and White Catalyzed Polyurethane
SUSPENSION SYSTEM
9
Working Load Limit (maximum weight applied to uppermost
mounting point): 400 lbs. (181.8 kg)
(12) 3/8 in.-16 Threaded Mounting Suspension Points
(3 each top & bottom and 2 each sides & back)
DIMENSIONS
Net
27.13 in. (H) x 24.13 in. (W) x 26.13 in. (D) x 10.13 in. (W rear)
689 mm (H) x 613 mm (W) x 664 mm (D) x 257 mm (W rear)
Shipping
34.75 in (H) x 33.00 in (W) x 33.00 in (D) x 15.75 in (W rear)
883 mm (H) x 838 mm (W) x 838 mm (D) x 400 mm (W rear)
WEIGHT
Net
114 lbs. (51.8 kg)
Shipping
127 lbs. (57.7 kg)
DE6412-8A
FEATURES - THE ALTEC LANSING DIFFERENCE
• 12” Two-Way High Output Speaker System
• High Fidelity 12” / 300mm Duplex
®
Point-Source Component
• Bass Horn Cabinet for LF control down to 500 Hz
• Excellent Broadband Efficiency – 102 dB 1 W 1 m
• High Output Performance – 128 dB continuous, 134 dB peak
• Large Format 1.4” Exit Throat HF Driver
• 60˚ x 40˚ Mantaray
™
High Frequency Horn
• Available in Charcoal Grey or White finishes
• Eyebolt suspension hardware included
GENERAL PRODUCT DESCRIPTION
Altec Lansing’s new DE6412-8A two-way 12” Duplex
®
point-source speaker
system is designed to provide a high output solution for reverberant spaces.
The DE6412-8A is an excellent choice for Auditoriums, Performing Arts
Centers, Houses of Worship or any application requiring high output
reproduction of both music and speech program material.
The DE6412-8A features Altec’s unique 12” Duplex
®
point-source speaker
component. This Duplex
®
“Engine” uses a single magnet structure, with
the high frequency diaphragm on the back of the magnet and the low
frequency voice coil and cone on the front of the structure. The result of
the proximity of the voice coils is a point-source alignment. Altec Lansing’s
use of this point-source Duplex
®
, or coaxial, design maximizes speech
intelligibility by minimizing the interference from adjacent devices that so
often occurs in traditional two-way speaker systems.
The 12” Duplex
®
“Engine” is installed in a bass horn cabinet. This trapezoid
enclosure provides predictable control in both the horizontal and vertical
planes to below 500Hz (see polar charts, page 3). The use of a bass horn
cabinet insures that much of the low frequency energy is kept off the
performance area, even when the speakers are flown overhead.
The DE6412-8A “Engine” is built around Altec’s large format 1.4” exit
throat high frequency compression driver, using a 2.8” Pascalite™
aluminum alloy diaphragm. The high frequency energy is fed from the
driver through the center of the magnet structure into a 60˚ x 40˚
Mantaray
®
high frequency horn. On the front of the magnet structure,
Altec uses a high efficiency 12”/300mm cone woofer optimized for bass
horn enclosures.
The paintable trapezoid cabinet is constructed from strong 13-ply birch
plywood, with steel reinforced suspension points. Altec includes the
suspension hardware kit with each speaker. Color choices are charcoal gray
or white, with contrasting cloth covered metal grille. The DE6412-8A has
an internal 1,200Hz passive network that can be easily switched over to
bi-amp operation. Connectors are barrier strip or Neutrik
®
Speakon
®
connectors. Altec Lansing includes neutral grille cloth with each subwoofer,
allowing you to dye the cloth to integrate the subwoofer into the
surroundings.
For extended low frequency performance, the LF215-4A is a dual
15”/380mm flyable subwoofer that has the same trapezoid footprint as the
DE6412-8A. Altec Lansing’s model 4048A 4-in x 8-out DSP processor has
available presets for a variety of design requirements.
P
R O F E S S I O N A l
1000 W. Wilshire Blvd., Suite 362 • Oklahoma City, Oklahoma 73116 • Phone: 1-405-848-3108 • Fax: 1-405-848-3217 • www.altecpro.com
