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 TD-000264-00-E

Specifications

AD-C81Tw

Frequency Response 

1

:

50- 200 kHz (-3 dB), 25- 200 Hz (-10 dB)

Maximum Output 

2

112 dB SPL continuous RMS output 
Calculated 118 dB SPL peak output

Transducers:

LF: 203 mm (8”), 19 mm (0.75”) voice coil;

Nominal Coverage:

180° conical (average 2.5 kHz - 10 kHz)

Impedance (ohms): 

8.0 nom./ 8.3 min. @ 42 Hz.

Power Rating 

3

:

RMS (IEC 100 hours): 100 W RMS (100 W) 
Recommended amp power: 200 watts RMS, maximum

Sensitivity: 

92.0 dB, 1 W, 1 meter, flush mounted (2 pi)

Bass Loading: 

Ported, tuned to 42 Hz

Optional Processing:

125 Hz. low-pass >12 dB/octave crossover. 

Dimensions:

See — Figure 7

Net Weight:

AD-C81Tw: 9.1 kg (20.0 lb.)

Enclosure:

Corrosion-resistant power coated steel enclosure with injection-molded plastic baffle. Press on metal grille

Mounting System:

Captive, integral mounting clamps. Insert enclosure into cutout, and tighten. Suspended ceiling C-ring and support bars included.

Connectors:

Ceramic block connector inputs and terminal block “through” connectors (rated for 400 W max).

Controls:

Transformer “tap” selector/ bypass (8 ohm) switch,  
Settings: 7.5, 15, 30, 60 W (15, 30, 60 W for 100 V) and 8 ohms.  
Averaged over 50 Hz - 20 kHz bandwidth (60 W tap).
Transformer Distortion  less than .01% THD above 100 Hz, 0.2% @ 50 Hz 
(30 W tap). Bandwidth: 40 - 20 kHz (-1 dB, all taps).

Agency Listings:

CE, UL 1480 (commercial/professional use, outdoor damp), UL 2043 (air handling spaces).

Specification Notes:

Specifications are subject to change without notice.

1  All frequency ranges specified refer to measured half-space response (2 pi).
2  Calculated maximum peak SPL at 1 m, half-space, speaker operating at rated 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.

Summary of Contents for AcousticDesign AD-C81TW

Page 1: ...TD 000264 00 E TD 000264 00 AcousticDesign AD User Manual Model AD C81Tw...

Page 2: ...wer supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped 10...

Page 3: ...loudspeakers can be mounted in suspended ceilings as well as non suspended types W e recommend an installation professional be consulted for safety assurance quality installation and optimum acoustic...

Page 4: ...wire used as a secondary support line must be strong enough to support several times the weight of the loudspeaker Do not use rope string twine or other textile based line in the secondary support sy...

Page 5: ...s 90 and is then pulled tight by the screw Figure 5 Recommendations and Important Information Grill removal The grill can be removed by carefully prying around its outer edge or inserting a small meta...

Page 6: ...onnections or pinch the wires Tighten the cover plate s retaining screw 12 Adjust the wiring at the entry point if necessary and properly secure fitting This prevents wire stress and strain from pulli...

Page 7: ...7 TD 000264 00 E Dimensions Figure 7 291 mm 11 5 in 368 mm 14 5 in 9 mm 0 3 in 321 mm 12 6 in...

Page 8: ...al mounting clamps Insert enclosure into cutout and tighten Suspended ceiling C ring and support bars included Connectors Ceramic block connector inputs and terminal block through connectors rated for...

Page 9: ...oll free USA only 800 772 2834 Facsimile Numbers Sales Marketing FAX 714 754 6174 Customer Service FAX 714 754 6173 World Wide Web www qsc com E mail info qsc com service qsc com tech_support qsc com...

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