The SP-1818A is designed for large venue installations or mobile events where thunderous bass is desired. It delivers 1200 watts of pure digital amplification through dual heavy-duty B-52 18-200S subwoofers. The full-range XLR outputs allow daisy-chaining of additional active subwoofers. The high-pass outputs send a filtered signal to active full-range speakers or rack-mount amplifiers. Detachable casters prevent rattling during operation.

AMPLIFIER FEATURES:
* Made in the U.S.A.
* 1200-watt RMS digital amplifier
* 800 watts RMS @ 8 Ohms (SP-18A)
* 1200 watts RMS @ 4 Ohms (SP-18A &
* SP-18S connected / SP-1818A)
* Built-in compressor / limiter
* XLR balanced inputs
* XLR Balanced FR or 120 Hz HP outputs
* 0–180° phase switch
* Neutrik Speaker Output (SP-18A)
* Full thermal & short circuit protection
* Signal sensing on/off circuitry

CABINET FEATURES:
* 13-ply Baltic birch construction
* Black or white scratch resistant paint finish
* 3” heavy-duty detachable casters
* 16-gauge perforated steel grille
* Pole-mount receptacle (SP-18A & SP-18S)
* Enhanced-grip B-52 handles

AMPLIFIER SPECIFICATIONS:
Frequency Response: 30-120 Hz
Crossover Frequency: 120 Hz
Crossover Slope: 24 dB / octave
Subsonic Filter: 30 Hz
Sensitivity: 102 dB (SP-18A)
105 dB (SP-1818A)
Peak SPL: 132 dB (SP-18A)
135 dB (SP-1818A)
Nominal Impedance: 8 Ohms (SP-18A)
4 Ohms (SP-1818A)

DIMENSIONS (W) x (H) x (D):
SP-18A - 24” x 24” x 26”
SP-18S - 24” x 24” x 26”
SP-1818A - 48” x 24” x 26”

WEIGHT (LBS):
SP-18A - 115 lbs.
SP-18S - 105 lbs.
SP-1818A - 220 lbs.

B-52’s enhanced-grip metal handles are the ultimate solution for carrying your B-52 loudspeakers. Constructed of bullet-proof stamped steel with a pressure-sensitive rubber backed grip, these handles are specially designed to fit in the palm of your hand. All Architectural Series folded horn subwoofer cabinets feature 13-ply Baltic birch construction, scratch resistant black or white paint finish and a LIFETIME construction warranty.