AD-S28Tw
Dual 8-inch Subwoofer
Features
- Dual 8-inch polypropylene cone woofers
- Large port area for extended low-frequency performance
- Dual-chamber ported bandpass cabinet
- Defeatable passive 120 Hz low-pass filter with impedance compensation
- 250 watts continuous power handling, 700 watts peak
- 70/100 V multitap transformer with 8 ohm bypass
- Yoke mount and flying hardware included
- Marine grade plywood construction
Package Includes:
AD-S28Tw loudspeaker
Yoke mount
Suspension hardware kit
Grille backing cloth
| SPECIFICATIONS | AD-S28Tw |
| Configuration | Surface mount bandpass subwoofer, ported |
| Low-frequency transducer | Dual 8-inch (200 mm) weather resistant, polypropylene cone woofers, rubber surround |
| Frequency range 1 Frequency response (-6 dB) Useable frequency range (-10 dB) | 42 to 165 Hz 36 to 205 Hz |
| Filter | 120 Hz low-pass, passive, bypassable |
| Maximum output 2 Calculated peak / continuous Output 2 pi (half space) 4 pi (full space) | 124 dB SPL / 118 dB SPL 118 dB SPL / 112 dB SPL |
| Nominal impedance | 8 ohms |
| Power rating Continuous power handling3 Recommended max amp power | 250 W (2 hours IEC) 500 W (loudspeaker "program" power) |
| Sensitivity | 94 dB, 2.83 V at 1 m, half space (2 pi) |
| Transformers | |
| Type | Custom low distortion laminated core, wide bandwidth design |
| Taps | 70V: 200, 100, 50, 25 W; 8Ω bypass 100V: 200, 100, 50 W; 8Ω bypass |
| Enclosure | |
| Material | Marine grade plywood, ABS, steel grille |
| Environmental | Exceeds Mil Spec 810 for humidity, salt spray and dust; IEC 60529 IP-X4 splash rating |
| Finish | Textured black paint |
| Grille | Painted steel |
| Connectors | Four-position barrier strip; 2 in / 2 out |
| Mounting Hardware | Black powder coated steel yoke with attachment hardware Black zinc coated forged shoulder steel M6 eyebolts Black powder coated steel shear plates with attachment hardware Black rubber feet with integral threaded bolt |
| Net Weight | 43 lb / 19.5 kg |
| Shipping Weight | 55 lb / 25 kg |
1 All frequency ranges specified refer to measured free field response.
2 Calculated SPL at 1 m, speaker operating at rated RMS power with pink noise within specified frequency range
3 Maximum 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.
QSC and the QSC logo are registered trademarks of QSC Audio Products LLC in the U.S. Patent and Trademark office and other countries.
AcousticDesign is a trademark of QSC Audio Products, LLC. All other trademarks are the property of their respective owners.
IntelliDock and Advanced Directivity are trademarks of QSC Audio Products, LLC