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hs-28 Dual 18 inch High Output ACM Subwoofer

Description

Our workhorse sub, the dual 18-inch hs-28 deploys our patent-pending ACM (Active Compliance Management) technology, which combines both band-pass and vented alignments into a single enclosure. The hs-28 places two premium, 18-inch transducers into this configuration, with both woofers sharing a common vented chamber. One woofer’s frontal radiation is direct, while the second woofer’s frontal radiation drives the band-pass chamber.

From there we add active onboard electronics including dual monaural powerful amplifiers that send 830W of pure sine wave power (2000W “peak” ) to each woofer. Sophisticated DSP precisely aligns the phase arrivals of the front facing woofer and both vents.

The unique ACM configuration requires a highly-capable transducer. The precision-engineered, long excursion 18-inch woofer developed for the hs-28 features large, 4-inch voice coil for increased power handling and decreased power compression.

The combination of ACM, purpose-designed transducers, and precision electronics allows the hs-28 to deliver much higher output throughout its operating bandwidth from a footprint that’s smaller than most dual 18-inch vented designs.

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Rugged Design and Stage Ready

What’s more, the small frontal area and footprint of the hs-28 makes it incredibly easy to assemble compact subwoofer arrays. For example, a stack of six hs-28’s is only slightly more than 6 feet wide by 5 feet high and produces more than 142 dB SPL at one-meter maximum output. The hs-28’s very linear and consistent response makes it an ideal component in directional subwoofer arrays including cardioid stacks and end-fire arrays.

Like all h-Class systems, the hs-28 ships with networking capabilities already onboard. There’s no need for additional cards or retrofitting. SystemVUE uses standard IP protocols to simplify the networking process. Simply plug in and the hs-28 will automatically connect to virtually any kind of IP configuration. Users can then access and monitor network and device-level parameters through our SystemVUE software.

We’ve housed all this rich, subwoofery-goodness in a rugged enclosure that’s manufactured from premium-grade, birch plywood with extensive internal bracing for resonant free operation. A highly-durable, 6-step Dura Coat finish looks great and protects the hs-28 through many years on the road.

 

hs-28 subs at Bottlerock 2015 in Napa Valley, CA

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Applications

  • Portable and installed live performance venues
  • High-impact audio/visual presentations
  • Theatrical sound design
  • World class dance clubs
  • Sound reinforcement rental companies
  • Performing arts centers
  • Themed entertainment facilities

Features

  • Active Compliance Management: Patent-pending hybrid design combines both band-pass and vented alignments into a single, compact footprint for more output and definition.
  • Tons of horsepower: Dual amplifier modules supplies 830W pure sine wave power (2000W “burst” power) to each woofer (4000W ‘burst’ total.)
  • Purpose-designed transducers: Dual spider long excursion woofers features large, 4-inch voice coils for increased power handling and reduce power compression.
  • Standard IP for easy networking onboard: .Simply plug in, and the system automatically connects to virtually any kind of IP configuration.
  • SystemVUE software: Mac, iOS and Windows compatible software provides access to networks and device-level parameters such as speaker protection, input/output levels, volume, mute, delay and input sources.
  • Built for the road: Premium birch plywood enclosure with extensive internal bracing and a highly-durable Dura Coat finish.
  • Impressive output-to-size ratio: Ideal for building extremely high-output and compact subwoofer arrays.

Specifications

Downloads

hs-28 Downloads:

Title
al-8, al-8SB, Technical Drawing December 22, 2016
al-8, al-8SB, al-Class, Support Data, Technical Drawing July 2, 2018
al-12, al-4, al-8, al-8SB, Design Files, h-8, h-Class, hs-20, hs-221, hs-221, hs-25, hs-28, hs-subs, Manuals, Product Data, Support Data, VUEDrive May 30, 2017
al-12, al-4, al-8, al-8SB, al-Class, Application Info, Design Files, Support Data July 23, 2016
al-4, al-8, al-8SB, al-Class, Support Data, Technical Drawing July 2, 2018
al-8, al-8SB, al-Class, EASE GLL FIles May 3, 2017
al-8, al-8SB, Support Data, Wiring Diagram December 20, 2016
al-8, al-8SB, al-Class, Product Data, Subwoofers November 14, 2018
al-8, al-Class, Product Data December 10, 2018
al-8, Product Data December 20, 2016
al-8, al-Class, Certification Documents July 2, 2018
al-8, al-Class, Support Data, Technical Drawing July 2, 2018
a-8, al-4, al-8, al-Class, Support Data, Technical Drawing July 2, 2018

Dimensional Drawing

ACM Technology

 

For more information go to the ACM Technology Page

SystemVUE Software

For more information go the SystemVUE product page.

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Like all h-Class systems, the hs-28 ships with networking capabilities already on-board. There’s no need for additional cards or retrofitting.  VUE uses standard IP protocols to simplify the networking process. Simply plug in and the hs-28 will automatically connect to virtually any kind of IP configuration. Users can then access and monitor network and device-level parameters through our SystemVUE™ software. The Ethernet connection also allows the use of Dante® for audio transport.

 

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