The new TSQ Series was the result of a specialist development program at Celestion's UK-based R&D facility, embodying innovations combined with a host of small, cumulative improvements, and offering key features that add up to a new standard in LF driver performance.
The TSQ Series drivers are all assembled on a new state-of-the-art, robotic production line at the company's loudspeaker research and manufacturing facility in the UK - meeting also growing demand for products made in Europe. According to Celestion, the series is also possible due to a culmination of the company’s 100 years’ experience in loudspeaker engineering and the integration of Celestion’s latest R&D innovations, particularly in the field of modeling and simulation to optimize designs and use of materials.
Particularly for the largest sizes, the TSQ audio drivers are designed to deliver consistently superior levels of performance in the most demanding professional sound reinforcement applications, even after hundreds of hours of use. The 21" TSQ2145 model, and the 18" TSQ1845 both have a continuous power rating of 3600W with 97dB/96.5 dB sensitivity, featuring a massive 4.5-inch diameter copper voice coil.
Both TSQ models also feature advanced temperature control using a 3-channel Precision Tuned Venting (PTV) system, providing highly efficient cooling across the frequency band. This allows the voice coil to typically operate at a temperature of up to 80°C lower than other leading drivers in this class. The use of a polysiloxane polymer laminated double suspension provides much greater stability and improved cone displacement symmetry. The suspension system design allows the driver to work much harder without losing stiffness, providing better coil control and reduced likelihood of DC shift, while simultaneously increasing speaker longevity. The large cone is also reinforced with a double-sided, weatherproof coating that enhances durability.
As Celestion details, constant airflow through Precision Tuned Venting (PTV) provides highly efficient cooling around the magnet assembly and voice coils. The cooling potential is further optimized through custom coil winding that utilizes a hybrid multilayer, inside/outside methodology, and advanced heat-resistant adhesives. The PTV and proprietary coil structure used in the TSQ series synergistically combine for significant reduction of power compression and thermal stress, maximizing product lifespan and performance longevity.
The cumulative result allows all drivers in the TSQ Series to have an impressive continuous power rating thanks to the enhanced cooling offered by the PTV system. The TSQ Series Reconfigured Magnet Assembly allows much greater cone excursion and a remarkably high Xmax protection level. The driver’s motor strength and mechanical compliance reach their defined Xprotection limit at practically the same point, achieving a low distortion performance, even during high excursion.
The woofer's lead-out wires’ precision is woven into the suspension to minimize excess motion and reduce fatigue. In ordinary drivers, the high power and long cone excursion would cause eventual fatigue of lead-out wires and joints, but the TSQ Series addresses this concern through laser-cauterized holes in the suspension to reduce whipping.
www.celestion.com
