SB-7218
Dual 18-inch Cinema Subwoofer
QSC announces divestiture of its Digital Cinema Series product line to Moving iMage Technologies, including the Screen Channel (“SC”), Subwoofer (“SB”), Surround (“SR”), and Screen Channel (“RSC”) product lines.
For all inquiries, please visit DSCreference.com or contact [email protected]
Features
- SB-7218 features dual 700-watt transducers
- Frequency range extends to below 25 Hz when used with the correct B6 filter
- DCM and SF-3 signal processors optionally available
- Enclosures feature vandal-resistant woofer mounting bolts
| SPECIFICATIONS | SB-7218 |
| Frequency Range 1 (-6 dB, Half space) (-10 dB, Half space) | 22–100 Hz 19–250 Hz |
| Maximum Output 2 Calculated Peak at rated power Calculated Continuous | 137 dB 130 dB |
| Impedance | 4 ohms nominal |
| Maximum Input Power 3 (100 hours of 6 dB crest factor IEC 268 noise spectrum) (2 hours of 6 dB crest factor pink noise, 50 Hz–20 kHz, AES method) Recommended Amplifier Power | 1200 watts continuous 1500 watts continuous 2600 watts continuous maximum |
| Sensitivity 2 V at 1 meter, half space | 101 dB |
| Transducers | Two 18-inch (457 mm) 700-watt high-efficiency subwoofer transducers featuring 4-inch (100 mm) copper voice coils on Kapton formers |
| Recommended Processing | LF boost Freq. = 25 Hz Q = 2.0 Gain = +6 dB provided by QSC, SF-3 or DCM |
| Connectors | Barrier strip screw terminals accept up to #10 AWG stranded wire |
| Enclosure | B6 alignment, vented enclosure with symmetrical port design, tuned to 25 Hz, constructed of MDF and heavily braced. Features vandal-resistant woofer mounting bolts. |
| Dimensions (HWD) inches | 48 × 30 × 24 |
| Dimensions (HWD) mm | 762 x 1220 x 610 |
| Weight | 210 lb (95 kg) |
1All frequency ranges specified refer to measured response (half space, 2 pi).
2Calculated SPL at 1 m, (half space, 2 pi), speaker operating at rated continuous power with pink noise within specified frequency range.
3Maximum input power tested in accordance with IEC 268-5 recommendations, 50 Hz–20 kHz band limiting, 6 dB signal crest factor.
Specifications are subject to change without notice.