Electro-Voice DL12X EDS User Manual
DL12X
Low/Mid-Frequency
Reproducer
• Woofer for compact, two-way voice
systems
• Mid-bass woofer for three- and fourway systems
• 300 watts long-term power capacity
• 100-dB sensitivity
• Thermally efficient magnet assembly for high reliability
• PROTEFTM coating helps protect
woofer from excessive power peaks
•TIRTM and FDDTM reduce distortion,
keep voice coil cool, and smooth
frequency response
SPECIFICATIONS
Usable Axial Frequency Response in Typical
Enclosure (4.0 ft3 tuned to 40 Hz), Swept OneThird-Octave Pink Noise, 4 Volts at 10 Feet,
Anechoic Environment, Normalized for 1
Watt/1 Meter (see Figure 1):
1
50-5,200 Hz
Power Handling (see Power-Handling
Test section),
Per EIA RS-426A:
300 watts
Per AES2-1984; ANSI S4.26-1984,
50-500 Hz: 300 watts
100-1,000 Hz: 350 watts
Sensitivity (SPL at 1 m, 1 watt input power,
nominal impedance),
200- to 4,000-Hz Average:
100 dB
100- to 800-Hz Average:
98 dB
Impedance Response (see Figure 4 for
response in typical enclosure; see Figure 3
for response in standard baffle),
Minimum (Z
6.5 ohms at 230 Hz
min
):
Nominal:
8 ohms
Distortion Response (on axis in standard
baffle, 10% rated input power; see Figure 6),
Second Harmonic,
100 Hz: –35 dB (1.8%)
1,000 Hz: –50 dB (0.3%)
Third Harmonic,
100 Hz: –38 dB (1.3%)
1,000 Hz: –32 dB (2.5%)
Beamwidth (angle included by 6-dB-down
points on polar responses for octave
bands of pink noise; see Figure 7),
500 Hz: 60
1,000 Hz: 65
2,000 Hz: 40
_________________________
1. For swept-sine-wave response in standard baffle, per
AES2-1984/ANSI S4.26-1984, see Figure 2.
o
o
o
Physical Constants,
Effective Piston Diameter:
266.7 mm (10.5 in.)
Effective Moving Mass (MMS):
0.033 kg (1.16 oz)
Voice-Coil Winding Depth:
15.2 mm (0.6 in.)
Voice-Coil Diameter:
63.5 mm (2.5 in.)
Voice-Coil Winding Length:
18.1 m (59.4 ft)
Top Plate Thickness at Voice Coil:
10.9 mm (0.43 in.)
BL Factor:
20 tesla meter
Thiele-Small Parameters (broken in),
f
: 56 Hz
s
V
: 77 liters (2.73 ft3)
AS
Q
: 0.24
ES
Q
: 7.47
MS
Q
: 0.24
TS
R
: 6.0 ohms
E
ηη
η
: 4.54%
ηη
0
S
: 0.050 m2 (78 in.2)
D
M
: 0.038 kg (0.084 lb)
MD
L
: 2.0 mH
E
C
: 0.18 mm/N
MS
R
: 3.62 mechanical ohms
MS
P
(max) (per ANSI/EIA RS-426-A 1980):
E
300 watts
2
X
: 4.1 mm (0.16 in.)
max
3
X
: 12.7 mm (0.50 in.)
lim
VD (SD x X
Thermal Rise after Power Test:
): 1.04 liters (0.036 ft3)
max
82 °C (180 °F)
Typical Vented Enclosures (see Typical
Enclosures section):
1.1 ft3 tuned to 65Hz or 1.8 ft3 tuned to 55 Hz
_________________________
2. X
is the one-way peak excursion which produces 10%
max
THD of the current waveform when driven at fs.
3. Displacement limit is the one-way peak excursion which,
when exceeded, will cause physical damage to the drive
mechanism.
Typical Amplifier Size (see Typical
Amplifier Size section):
300-600 watts
Mounting Information (see Mounting
section),
Bolt-Hole Diameter
(eight evenly spaced holes):
7.1 mm (0.28 in.)
Bolt Circle Diameter:
294 mm (11.56 in.)
Baffle Opening Diameter
(front or rear mounting):
279 mm (11.0 in.)
Electrical Connections (see Electrical
Connectors section),
Connector Type:
Push terminals for bare wires
Polarity:
A positive voltage applied to the positive
(red) terminal produces a positive
pressure at the front of the cone
Additional Descriptive Information,
Magnet Weight:
2.2 kg (4.9 lb)
Magnet Material:
Barium ferrite
Frame:
Cast aluminum
Frame Finish:
Textured black epoxy
Plating of Steel Parts:
Bright Cadmium
Voice-Coil Material:
Aluminum
Voice-Coil Insulation:
Polyimide 220 °C rating
Voice-Coil Form:
Polyimide
Back Cover:
Black, advanced synthetic elastomer
Optional Accessories:
SMH-1 mounting hardware kit
DL12X SPECIFICATION GRAPHICS
FIGURE 1 — Axial Response in Typical Enclosure (2.0 ft3),
1 Watt/1 Meter
FIGURE 2 — Frequency Response in Standard Baffle (0° and 45°)
FIGURE 3 — Impedance in Standard Baffle
FIGURE 6 — Distortion in Standard Baffle at 10% Rated Input Power
FIGURE 7 — Beamwidth vs. Frequency
Ω
FIGURE 4 — Impedance in Typical Enclosure (2.0 ft3)
Ω
FIGURE 5 — Dimensions
FIGURE 8 — Directivity vs. Frequency
θ
FIGURE 9 — Polar Response
HORIZONTAL
VERTICAL
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