The QSC AC-S4T is a compact and efficient 16-watt wall-mount surface speaker designed for background music and paging applications. Featuring a 4.5-inch full-range transducer, it provides clear and balanced sound in smaller commercial spaces such as retail stores, offices, restaurants, and hospitality venues.
Engineered for ease of integration, the AC-S4T includes a built-in 70V/100V transformer with multiple tap settings, allowing flexibility in distributed audio systems. It also supports 8Ω bypass for low-impedance configurations.
The speaker’s weather-resistant enclosure and included mounting hardware enable both indoor and semi-outdoor installations, while its unobtrusive design blends well with modern interiors. The frequency response is optimized for speech and light music, making it ideal for background audio needs.
With reliable QSC performance and long-term durability, the AC-S4T offers professional audio quality in a compact footprint.
| Feature | Details |
|---|---|
| Model | QSC AC-S4T |
| Type | Wall-Mount Surface Speaker |
| Power Handling | 16W RMS / 64W Peak |
| Driver Size | 4.5-inch full-range transducer |
| Frequency Response | 70 Hz – 20 kHz |
| Sensitivity | 84 dB SPL (1W @ 1m) |
| Maximum SPL | 96 dB Peak |
| Transformer Taps | 16W, 8W, 4W (70V); 16W, 8W (100V) |
| Impedance | 8Ω nominal (bypass mode) |
| Enclosure Material | ABS, weather-resistant |
| Mounting Hardware | Included U-bracket |
| Color Options | Black or White |
| Dimensions (H x W x D) | Approx. 210 mm x 149 mm x 149 mm |
| Weight | Approx. 1.8 kg (4 lbs) |
| Applications | Retail, offices, hospitality, education, small public areas |
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