EN
Specifications
AD-S28tw
Frequency Response
1
:
42 - 165 Hz (-3 dB), 36 - 205 Hz (-10 dB)
maximum Output
2
:
118 dB SPL continuous rms output
(Calculated)
124 dB SPL peak output
transducers:
Dual 8 inch (200 mm) weather resistant, polypropylene cone woofer, rubber surround
Impedance (ohm):
8.0 n
om. / 9.5 min at 77 Hz with LPF “IN” / 5.3 min at 63 Hz with LPF “OUT”
Power Handling
3
:
RMS (IEC 2hrs):
250 W
Recommended amp rating: 500 W
Sensitivity:
94 dB, 2.83 V, 1 m, ground plane (2
P
)
Internal Filter:
120 Hz low pass, passive, bypassable
Optional Processing:
120 Hz low pass >12 dB/octave, internal filter bypassed
transformer:
Type:
Custom low distortion laminated core, wide bandwidth design
Taps:
70 V: 200, 100, 50, 25 W / 100 V: 200, 100, 50 W / 8
W
selected by rotary switch
Connectors:
Four position screw terminals; 2 in / 2 out
Controls:
Transformer tap selector and bypass; rotary switch
Low pass filter rotary switch
Enclosure Configuration:
Dual chamber bandpass, one chamber ported, surface mount
Enclosure Construction:
Marine grade plywood
Environmental:
IEC 60529 IP-x4 rated against dust and water incursion. Not recommended for outdoor
installation without adequate cover.
Finish:
Textured black paint (paintable)
Grille:
Zinc plated steel with black paint coating and black ABS end caps
mounting Hardware:
Included black powder coated steel yoke with attachment hardware
Included black zinc coated forged shoulder steel M6 eyebolts
Included black powder coated steel shear plates with attachment hardware
Included black rubber feet with integral threaded bolt
Weight - Net / Shipping:
43 lb (19.5 kg) / 55 lb (25 kg)
Specification Notes:
1 - All frequency ranges specified refer to half space measured response (2
P
).
2 - Calculated peak SPL at 1m, half space, speaker operating at rms power, pink noise input, 50 Hz to 20 kHz.
3 - Maximum input power tested in accordance with IEC recommendations; 50 Hz to 20 kHz band limiting, 6 dB signal crest factor.
Specifications are subject to change without notice.
For detailed information, visit QSC’s web site at http://www.qscaudio.com or call us at 1-800-854-4079 (toll free USA only)
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