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SPECIFICATIONS:
Frequency Response, 1 Watt at 1 Meter on
Axis, Swept One-Third-Octave Pink Noise,
Anechoic Environment (see Figure 1):
40-2,000 Hz
Low-Frequency 3-dB-Down Point,
Normal:
40 Hz
Step-Down (with equalization):
28 Hz
Usable
Low-Frequency
(10-dB-down point),
Normal:
30 Hz
Step-Down (with equalization):
22 Hz
Half-Space Reference Efficiency:
7.4%
Power-Handling
(see Power Handling section),
Long-Term Average per EIA RS-426A:
1,200 watts
Continuous Program:
2,000 watts
Maximum Long-Term Average Mid-Band
Acoustic Output:
89 watts
Sound Pressure Level at 1 Meter, 1 Watt
(2.0 volts) Input, Anechoic Environment,
Band-Limited Pink-Noise Signal,
100-800 Hz:
100 dB
50-125 Hz:
95 dB
Dispersion Angle Included by 6-dB-Down
Points on Polar Responses, Indicated One-
Third-Octave Bands of Pink Noise (see Fig-
ure 3),
90-125 Hz Horizontal and Vertical:
360°
SPEAKERS—Low-Frequency Systems
6
TL550D Low-Frequency Speaker System
400-800 Hz Horizontal:
400-800 Hz Vertical:
Directivity Factor R
dicated Range (see Figure 4),
90-125 Hz:
400-800 Hz:
Limit
Directivity Index D
90-125 Hz:
400-800 Hz:
Distortion, 0.1 Full Power Input
(see Figure 5),
Second Harmonic,
Capacity
Third Harmonic,
Distortion, 0.01 Full Power Input
(see Figure 6),
Second Harmonic,
Third Harmonic,
600 Cecil Street, Buchanan, MI 49107
616/695-6831, 616/695-1304 Fax
©EVI Audio 1999 • Litho in U.S.A.
120° ± 10°
60° ± 20°
(Q), Median over In-
q
1.0
9.3
(10 log R
),
i
q
0.0 dB
9.6 dB
100 Hz:
1.3%
1,000 Hz:
2.5%
100 Hz:
0.5%
1,000 Hz:
0.6%
100 Hz:
0.4%
1,000 Hz:
0.5%
100 Hz:
0.3%
1,000 Hz:
0.2%
Transducer Complement:
Two EVX-150A
Net Box Volume:
3
238 l (8.4 ft
)
Box Tuning Frequency,
Normal:
42 Hz
Step-Down:
30 Hz
Step-Down Peak-Boost Frequency (see
Step-Down section):
32 Hz
Impedance, Nominal/Minimum (see Elec-
trical Connections section):
4.0/4.2 ohms
Input Connectors:
Side-mounted screw terminals (#10) on
barrier strip
Enclosure Materials and Finish:
Black vinyl-clad particle board
Suspension (see Installation and Suspension
of TL550D Enclosures section):
Two "independently certified" suspension
kits are available, the HS6 and HS7
Optional Horn Mounting Kits:
HMK-1 and HMK-2 (can be used with the
HP940 and HP9040 horns, respectively)
Dimensions,
Height:
39.5 in. (100.3 cm)
Width:
22.5 in. (57.2 cm)
Depth:
21.8 in. (55.4 cm)
Net Weight:
59.1 kg (130 lb)
Shipping Weight:
65.5 kg (144 lb)
Part Number 532030 —9943
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