The QSC Acoustic Design AD-S6T is a surface mounted 70/100V, 6.5" two-way loudspeaker system, ideally suited for a wide variety of foreground and background sound reinforcement applications. The AD-S6T features a high quality 6.5" weather treated paper cone woofer on a 1.5” voice coil.  A carefully selected 1” silk dome tweeter with a 1” voice coil perfectly matches the sensitivity and performance of the woofer for outstanding full range reproduction. The AD-S6T features a high quality 6.5" weather treated paper cone woofer on a 1.5” voice coil.  A carefully selected 1” silk dome tweeter with a 1” voice coil perfectly matches the sensitivity and performance of the woofer for outstanding full range reproduction. Consistent and even 105° axisymmetric (conical) coverage is realized by means  of DMT™ (Directivity Matched Transition).  This innovation matches the high frequency wavegide to the woofer coverage at the crossover point, resulting in a coherent transducer transition and improved off  axis response. To maintain this frequency response, the AD-S6T utilizes a variable tap 60 watt low saturation and low loss 70/100V transformer with 8Ω bypass, accessible via a rotary selector located on the enclosure back under a weather grommet for improved weather resistance.

AD-S6T Features

  • 6.5 inch weather treated woofer; 1 inch silk dome tweeter
  • 105° conical DMT coverage
  • 60 watt low-saturation and low-loss 70/100V transformers with 8Ω bypass
  • Maximum peak SPL 116 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 with no slippage over time
  • Advanced voicing filter sets using QSC Intrinsic Correction™, available through either Q-SYS or CXD amplifier platform
  • 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
  • Available in black (RAL 9011) or white (RAL 9010)
System Details AD-S6T
Effective frequency range1 60 Hz - 20 kHz
Rated noise power / voltage2 150 watts / 35 volts (rms)
Broadband sensitivity3 89 dB SPL
Coverage angle (-6 dB) 105° conical DMT
Directivity factor (Q) 5
Directivity Index 7 dB
Maximum continuous SPL4 110 dB
Maximum peak SPL4 116 dB
Rated impedance 8 ohms 
Recommended amplifier power (loudspeaker "program" power) 300 watts
Transformer taps 70 V: 60, 30, 15, 7.5 W and 8Ω bypass 100V: 60, 30, 15 W and 8Ω bypass
HF transducer 1 inch silk dome tweeter / 1 inch voice coil, horn loaded
LF transducer 6.5 inch weather resistant paper cone woofer 1.5 inch / 38 mm voice coil
Input connector type Euroblock connector with parallel output terminals 
Enclosure material Painted ABS polymer 
Grille material Powder coated aluminum 
X-Mount material Powder coated aluminum
Enclosure Details
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 weight 13.6 lb / 6.2 kg
Product dimensions (HWD) inches 14.4 × 8.5 × 8.5
Product dimensions (HWD) mm 365 × 215 × 215
Shipping weight 33.4 lb / 15.2 kg (pair packed)
Shipping dimensions (HWD) inches 20 × 12 × 23 (pair packed)
Shipping dimensions (HWD) mm 510 × 305 × 585 (pair packed)
Included accessories X-Mount mounting system, Euroblock connector, input panel cover
List price: $448.00
Price: $448.00
SKU: AD-S6T
Catalog: 
Surface, Box & Hanging Speakers
Brand: 
QSC Audio
Dimensions: 24 in × 12 in × 20 in
Weight: 33 lb