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QSC AD-S28Tw AcousticDesign Surface Mount Bandpass Subwoofer

The AD-S28Tw pairs dual 8 inch weather-resistant polypropylene cone woofers in a ported bandpass enclosure, extending low-frequency output for AcousticDesign surface-mount systems in bars, retail spaces, and houses of worship where a separate subwoofer amp rack is not practical. The bandpass loading concentrates output in the subwoofer band rather than spreading it across the full range, keeping the low end tight under passive satellite speakers.

At 250 watts continuous and 500 watts program power, it is built for surface mounting alongside the rest of the AcousticDesign S-series family and shares that line's transformer-tap flexibility for distributed 70/100V or direct 8 ohm systems.

LF TransducersDual 8 in (200 mm) weather-resistant polypropylene cone woofers
Frequency Range42 Hz - 165 Hz (-6 dB)
Power Handling250 W continuous / 500 W program
Maximum SPL124 dB (half space) / 118 dB (full space)
Impedance8 ohms nominal
ConfigurationSurface-mount bandpass subwoofer, ported
Net Weight43 lb (19.5 kg)