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Articles May-June 2021

Pursuing the Pro Audio Trail

In conversation with Caroline Moss and Sue Gould

PT got in touch with the Pro AVL Asia magazine core team of Editor - Caroline Moss and Sales Director - Sue Gould, who between them boast of over three decades of experience in the pro audio industry..... read more

NJSM Marks a Milestone in the Business of Sound

From Rental Company to manufacturer and innovator, Nixon Johnny has guided and grown NJSM from a two-person company to a fifty-person company, continuing to expand into virtual events with NJSM Virtual Studio..... read more

Tech Savvy Environment for T-Systems

Eyte Technologies installs high-tech AV Solution at T-System’s Experience Center facilitating brand value and delivering superior customer experience..... read more

Conversations with SudeepAudio

Sudeep Audio, one of India’s first pro audio web store selling studio software and equipment online commenced its YouTube Channel, ConverSAtions, in 2011 to share the journey of Indian Sound Engineers..... read more


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EM Acoustics Launches ST-215 touring subwoofer

EM Acoustics has announced the launch of their ST-215 medium format touring subwoofer. As the first product in the forthcoming S Series of subwoofers, the ST-215 is designed to complement other products within the EM Acoustics range as well as offering ideal low frequency support for HALO-B systems.


EM Acoustics has announced the launch of their ST-215 medium format touring subwoofer. As the first product in the forthcoming S Series of subwoofers, the ST-215 is designed to complement other products within the EM Acoustics range as well as offering ideal low frequency support for HALO-B systems.

Featuring dual 4-inch voice coil 15-inch neodymium LF drive units for unmatched power density and headroom, the ST-215 has been voiced to add low frequency body to flown HALO-B systems and is also mechanically compatible with HALO-B. However, this versatile subwoofer is also a standalone product and can be used to support any EM Acoustics product, in either a flown or ground-stacked configuration.

The compact, lightweight enclosure offers an optimally-tuned bass reflex design with a single low-velocity port to minimize distortion generated by turbulence. The high motor strength of the drive units gives the ST-215 excellent transient response and the moving area of the two high-excursion 15-inch drive units generates significant low frequency extension and overall subwoofer output. The enclosure is symmetrical to facilitate the creation of cardioid arrays where appropriate.

Housed in a robust weather-resistant enclosure and utilizing stainless steel fixings and a stainless-steel grille, the ST-215 is ready for outdoor use straight out of the box. Even the touring-friendly 4-point flying hardware is coated with XylanTM for maximum durability. All rigging components retract flush with the cabinet for transit and ground stack use. Arrays of up to nine units can be easily and quickly assembled with above-regulation safety compliance.

According to operations director, Mike Wheeler, the ST-215 offers all the advantages of dedicated sub-bass support for HALO-B without being too specific for use with other EM Acoustics loudspeakers. “We deliberately designed the ST-215 to be mechanically and acoustically compatible with HALO-B, because HALO-B deserves to have a subwoofer that is precisely tailored to match the rest of the system,” he explains. “However, the design is flexible enough that it’s also a highly versatile system in its own right and can easily accompany other EM Acoustics systems, which makes it really easy to integrate into rental stock, for example. However, that same flexibility makes it equally at home in fixed installations, so it really is the best of both worlds.”

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