Specifications

Frequency Response1:	90- 20k Hz (-6 dB)
	70- 21k Hz (-10 dB)
Drivers:	low frequency- 5.25” (133 mm) magnetically shielded
	high frequency- metallized dome, neodymium magnet structure
Maximum Output2:	103 dB SPL continuous rms output
(calculated)	106 dB SPL peak output
Impedance:	8 ohms nominal
	6.3 ohms minimum, 280 Hz
	155 ohms maximum
Power Rating3:
rms (IEC 100 hrs):	80 watts rms
recommended amp power:	160 watts rms
Sensitivity:	91.5 dB, 1 watt, 1 meter, free field (4 pi)
Directivity Index:	500 Hz	3.0
	1000 Hz	4.5
	2000 Hz	10.7
	4000 Hz	6.9
	8000 Hz	7.6
	16000 Hz	6.2
Q:	500 Hz	1.5
	1000 Hz	2.6
	2000 Hz	11.3
	4000 Hz	6.3
	8000 Hz	7.1
	16000 Hz	5.2
Weight per pair:	AD-S52:15 lb. net, 22 lb. shipping
	AD-S52T:18 lb. net, 25 lb. shipping
Nominal Coverage:	90° horizontal. x 60° vertical
Enclosure and Grill:	high impact polystyrene, removable metal grill
Connectors:	binding posts (accept up to 0.15” (3.8 mm) diameter wire, banana plugs, or spade lugs)
Mounting Hardware:	Included: ball mount adapter with variable wall plate configurations, alloy construction
	Optional: yoke mount with retaining knobs (model YM-5)

NOTES:

1- All frequency ranges specified refer to measured free-field response (4 pi).

2- Calculated maximum peak SPL at 1 m, free-field, 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.

Specifications are subject to change without notice.