Specifications subject to change without notice

Specifications (subject to change without notice)

Frequency Range:

SB-5218

SB-7218

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:

800 watts rms

1200 watts rms

100 hours of 6 dB crest factor

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)