Martin Audio AQ28 User Manual

Page 1
AAQQ2288
Two-way passive reflex with dual bass drivers
PRELIMINARY DATA
features
Compact two-way passive systemDual 8” (200mm) long-throw bass driversExtended LF performanceUser rotatable 90º x 50º hornHigh power outputFive year limited warranty
applications
Restaurants and barsTheatresCruise Ships
Century Point, Halifax Road, Cressex Business Park, High Wycombe, Buckinghamshire HP12 3SL, England. Telephone: +44 (0)1494 535312 Facsimile: +44 (0)1494 438669 E-mail: info@martin-audio.com All information is Copyright © 2008 Martin Audio Ltd. Due to Martin Audio’s policy of continuing improvement, we reserve the right to alter these specifications without prior notice.
The AQ28 is a two-way, dual-bass driver, passive loudspeaker designed to give extended LF performance from a compact, architecturally neutral, vented enclosure. It features dual 8”(200mm) long-throw, 2”(50mm) coil direct-radiating bass units and a 1.7”(44mm) diaphragm, 1”(25mm) exit compression driver, mounted on a proprietary, rotatable 90° x 50° constant directivity horn.
Below 250Hz both LF drivers operate together whilst above 250Hz only the upper LF driver is used to reproduce frequencies up to the crossover point. This technique avoids the uneven polar response which would occur if both drivers were operated over the same frequency band. The LF drivers are also fitted with flux demodulation rings, which reduce intermodulation distortion, in order to preserve midband clarity at high signal levels.
architectual
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overall dimensions
technical specifications
TYPE Two-way passive reflex with dual bass drivers FREQUENCY RESPONSE (5) 60Hz-18kHz ± 3dB DRIVERS 2 x 8” (200mm)/2” (50mm) voice coil LF drivers
1” (25mm) exit HF compression driver RATED POWER (2) 300W AES, 1200W peak RECOMMENDED AMPLIFIER 400W-1000W into 4 ohms SENSITIVITY (6) 95dB MAXIMUM SPL (7) 120dB continuous, 126dB peak NOMINAL IMPEDANCE 6 ohms DISPERSION (-6dB) 90º horizontal, 50º vertical CROSSOVER 2.5 kHz passive ENCLOSURE 20 litre, 15/18mm MDF FINISH Textured light grey paint PROTECTIVE GRILLE Grey perforated steel CONNECTORS Low profile 20 amp push-lock FITTINGS 6 x M8 inserts for bracket
2 x M8 inserts for safety point DIMENSIONS (W) 258mm x (H) 660mm x (D) 255mm
(W) 10.2ins x (H) 26ins x (D) 10ins
WEIGHT 19kg (42lbs)
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