Mackie SWA1801 user manual

Summary of the content on the page No. 1

SW A1801
Active Subwoofer System
SWA1801
 The SWA1801 is an 18-inch high output, active sub-
woofer system. It features a newly designed high-preci-
sion 18-inch transducer combined with application-specific
amplifier technology. The system is composed of a single,
compact subwoofer cabinet with built-in control and ampli-
fier electronics.
 The transducer used in the SWA1801 system features a
precision 4-inch voice coil that offers extreme power han-
dling capabilities. The magnetic assemb

Summary of the content on the page No. 2

Active Subwoofer System Active Subwoofer System SW A1801 SW A1801 SWA1801 Technical Specifications System Acoustic Safety Features Acoustic Performance Protection: Low-frequency dynamic bass protection, –3 dB Response: 45 Hz–120 Hz rms limiting, power supply and –10 dB Response: 35 Hz–120 Hz amplifier thermal protection Max SPL Long-term:

Summary of the content on the page No. 3

Active Subwoofer System Active Subwoofer System SW A1801 SW A1801 SWA1801 On-Axis Frequency Response (With Second and Third Harmonic Components) SWA1801 Frequency Response On-Axis 110 100 Fundamental 90 Second Third 80 70 60 50 40 20 100 1000 10000 20000 Frequency (Hz) SWA1801 Rear Panel Connector Plate LIMIT SIGNAL THERMAL POWER PARALLEL SUBWOOFER HIGH PASS THRU FULL RANGE CONTROL (MID/HIGH FREQ) (FULL RANGE OUTPUT) INPUT OUTPUT 120Hz NORMAL L L SUBWOOFER LEVEL IN OUT NORMAL R R REV 180 PHASE

Summary of the content on the page No. 4

SW A1801 Active Subwoofer System Architects’ and Engineers’ Specifications The active subwoofer loudspeaker system shall Thermal protection shall be provided by a heat sink-mounted thermal sensor, which monitors the incorporate one 18-inch low-frequency (LF) trans- ducer mounted within a vented enclosure and heat sink temperature and triggers the thermal protection circuit should the temperature exceed tuned for optimum low-frequency response. System frequency response shall vary no more th