Overview
The black QSC AcousticDesign AD-S4T Loudspeaker is a surface mounted 70/100V, 4" two-way loudspeaker system, ideally suited for a wide variety of foreground and background sound reinforcement applications. The AD-S4T features a high-quality 4" weather-treated paper cone woofer on a 1" voice coil. It also has a 0.75" silk dome tweeter with a 0.75" voice coil. The consistent and even 120° axisymmetric (conical) coverage is achieved through DMT (Directivity Matched Transition), which matches the directivity patterns of the woofer and the high-frequency waveguide at the crossover point. The even and accurate frequency response of the AD-S4T is maintained even in 70/100V applications by use of a low-loss, low-saturation 30W transformer with selectable taps, including an 8-ohm bypass. The rotary selector is located on the back of the enclosure, protected by a weather grommet. Featuring a rugged ABS enclosure, sealed input panel cover, and powder-coated aluminum grille, the AcousticDesign surface-mounted speaker exceeds IEC60529 IP-54 ratings for dust and splash resistance.
The two-way surface-mount loudspeaker includes the X-Mount system for easy installation. Knurled surfaces at the pivot planes ensure the load will not drift or sag over time. Articulation marks allow pre-configuration of the X-Mount while on the ground with no special tools required. Voicing filter sets using QSC Intrinsic Correction techniques are obtainable via Q-Sys networked audio processing platforms, including CXD amplifiers (sold separately). For your system integration needs, complete EASE, CF2, CAD, and BIM files are available for download on the QSC website.
Features
- 4" Weather-treated woofer; 0.75" silk dome tweeter
- 120° Axisymmetric (conical) coverage
- 30W Low-saturation and low-loss 70/100V transformers with 8-ohm bypass
- Maximum peak SPL 110 dB (8 ohm bypass)
- DMT (Directivity Matched Transition) ensures smooth, uniform frequency response over the coverage area
- X-Mount system enables the loudspeaker to be easily installed and deployed at a variety of angles
- Lightweight ABS enclosure for durability
- Sealed input panel cover and powder coated aluminum grille for added weather resistance
- Meets IEC60529 IP-54 for dust and splash resistance
- Suitable for foreground and background sound reinforcement applications in restaurants, retail, educational institutes, concourses, casinos, transportation terminals, places of worship, or as part of large system ancillary support
- Complete EASE, CF2, CAD, and BIM information available online
Specs
| Frequency Range | 68 Hz to 20 kHz |
| Noise Rating | Power: 50 W Voltage: 20 V rms |
| Sensitivity | Broadband: 87 dB SPL |
| Coverage Angle | At -6 dB: 120° (500 Hz to 5 kHz) |
| Directivity Factor | 6 |
| Directivity Index | 8 dB |
| Maximum SPL | Continuous: 104 dB Peak: 110 dB |
| Rated Impedance | 8 ohms |
| Transformer Taps | 70 V: 30, 15, 7.5, 3.75 W and 8-ohm bypass 100 V: 30, 15, 7.5 W and 8-ohm bypass |
| High Frequency Transducer | 0.75" (1.9 cm) silk dome tweeter/0.75" (1.9 cm) voice coil, horn loaded |
| Low Frequency Transducer | 4" (100 mm) weather-resistant paper cone woofer / 1" (25 mm) voice coil |
| Input Connector | Euroblock connector with parallel output terminals |
| Construction Material | Enclosure: Painted ABS polymer Grille: Powder-coated aluminum X-Mount: Powder-coated aluminum |
| Ingress Protection Rating | IP-54 |
| Operating Environment | Indoor and outdoor use |
| Testing | Salt Fog: MIL-STD-810G Method 509.5 for 100 hours Humidity: MIL-STD-810G Method 507.5, Natural cycle B2, cyclic high RH for 7 days High and Low Temperature: Tested to QSC internal standards between -4 to 122°F (-20 to 50°C) |
| Operating Temperature | -4 to 122°F (-20 to 50°C) |
| Dimensions | 10.27 x 6.34 x 6.42" (261 x 161 x 163 mm) |
| Weight | 6.5 lb (2.9 kg) |
