QSC Audio SB-5218 - Manual (Page 5)

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Specifications (subject to change without notice)
SB-5218 SB-7218
Frequency Range: 24 - 100 Hz (±3 dB) 22 - 100 Hertz (±3 dB)
19 - 250 Hz useable range (-10 dB) 19 - 250 Hertz useable range (-10 dB)
Maximum Output: 135 dB SPL calculated peak 137 dB SPL calculated peak
1 meter, half space, at rated rms power with 6 dB crest factor pink noise input, 25 - 250 Hertz.
129 dBA SPL calculated maximum continuous 130.5 dBA SPL calculated maximum continuous
1 meter. The dBA scale is typically used to identify sound sources which can cause permanent hearing loss.
Impedance: 4 ohms, nom. (3.2 @ 25 Hz., 62 @ 50 Hz.) 4 ohms, nom. (3.2 @ 27 Hz., 28 @ 48 Hz.)
Maximum Input Power:
100 hours of 6 dB crest factor 800 watts rms 1200 watts rms
pink noise, 25 - 250 Hertz
2 hours of 6 dB crest factor 1000 watts rms 1500 watts rms
pink noise, 25 - 250 Hertz, AES method
Recommended Amp Power: 1600 watts rms maximum 2600 watts rms maximum
Sensitivity: 99.5 dB half space 101.0 dB half space
(25 - 100 Hz, 1 watt, 1 m.) 93.5 dB full space 95.0 dB full space
Weight: 225 lbs. shipping, 205 lbs. net (102/93 kg.) 230 lbs. shipping, 210 lbs. net (104/95 kg.)
Both Models-
Nominal Coverage:
Omnidirectional (80 Hz)
Recommended Processing: LF boost- freq.= 25 Hz, Q=2.0, gain= +6 dB. QSC DSP configurations are available at www.qscaudio.com. Parameters for
alternative processing hardware are available upon request.
Connectors: Barrier strip screw terminals accept up to #10 AWG stranded wire. Four terminals: (two INPUT and two PARALLEL OUT).
Drivers are internally wired in parallel. For independent transducer connection, remove blue jumper wire and yellow
jumper wire on internal-side of terminal cup and mark enclosure accordingly.
Transducers: Two 18” (457mm) high efficiency subwoofer transducers featuring vented 4” (100mm) copper voice coils on Kapton®
formers. High excursion/low distortion design, with extremely high power handling, and low thermal and port com-
pression.
Enclosure: B6 alignment, vented enclosure with symmetrical port design, tuned to 25 Hz, constructed of medium density fibre-
board and heavily braced. Features vandal resistant woofer mounting bolts.
Size: 30” wide X 48” high X 24” deep (762 mm X 1220 mm X 610 mm)