The QSC AcousticDesign™ AD-S4T is a surface mounted 70/100V, 4" two-way loudspeaker system, ideally suited for a wide variety of foreground and background sound reinforcement applications.
AcousticDesign™ series offers integrators a premium quality installed sound solution where performance, coverage, and aesthetics are paramount. Combined with unprecedented ease-of-installation and high weather resistance, the AcousticDesign™ series provides integrators a versatile and confident install solution.
QSC AD-S4T Features
- Priced individually, sold in quantities of 2
- 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 with no slippage over time
- Advanced voicing filter sets using QSC Intrinsic Correction™, available through either Q-Sys processing or CXD amplifier platforms
- Low-saturation and low-loss 70/100V transformers with 8Ω bypass
- Lightweight ABS enclosures offer long-term durability and lasting good looks
- Sealed input panel cover and powder coated aluminum grilles for added weather resistance
- Meets IEC60529 IP-54 for dust and splash resistance
- AD-S4T 4.5-Inch Surface Mount Speaker2
- Effective frequency range1 68 Hz - 20 kHz
- Rated noise power / voltage250 watts / 20 volts (rms)
- Broadband sensitivity387 dB SPL
- Coverage angle (-6 dB)120° conical DMT™
- Directivity factor (Q)6
- Directivity Index8 dB
- Maximum continuous SPL4104 dB
- Maximum peak SPL4110 dB
- Rated impedance8 ohms
- Recommended amplifier power (loudspeaker "program" power)100 watts
- Transformer taps
- 70V: 30, 15, 7.5, 3.75W and 8Ω bypass
- 100V: 30, 15, 7.5W and 8Ω bypass
- HF transducer0.75-inch silk dome tweeter / 0.75-inch voice coil, horn loaded
- LF transducer4.5-inch weather resistant paper cone woofer, 1-inch / 25 mm voice coil
- Input connector typeEuroblock connector with parallel output terminals
- Enclosure materialPainted ABS polymer
- Grille materialPowder coated aluminum
- X-Mount materialPowder coated aluminum
- Ingress protection IP-54
- Operating environment Designed for indoor and outdoor use
- Testing
- The AD Series loudspeakers qualified for outdoor use using the following tests:
- Salt fog: MIL-STD-810G Method 509.5 for 100 hrs.
- 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 -20° and 50°C
- Net weight6.5 lbs (2.9 kg)
- Product dimensions (HxWxD)10.3x6.34x6.42" (261x161x163mm)
- Shipping weight16.8 lbs (7.65 kg), pair packed
- Shipping dimensions (HxWxD)15.5x10.3x18" (394x261x458mm), pair packed
- Notes
- 1 Free-field, -10 dB from on-axis sensitivity
- 2 IEC60268-1 noise signal for 2 hours
- 3 On-Axis, free-field sensitivity, 2.83V, 1 m
- 4 Calculated from rated noise voltage and sensitivity