ACM the first major advance in vented box subwoofer design in decades.
ACM is a patent-pending, unique hybrid design that combines the attributes of direct radiating and band-pass configurations to reduce distortion and increase sound pressure output while decreasing box size.
ACM technology utilizes a unique hybrid configuration in which two woofers share a common vented chamber. One woofer’s frontal radiation is direct, while the second woofer is set at 90 degrees and drives a bandpass vented chamber that has fourth-order response characteristics. Each woofer has its own amplifier and DSP control. This sophisticated combination of physics and DSP yields a substantial increase in amplitude over conventional designs, with the summed output of drivers and vents maintaining flat phase response and exhibiting low distortion, while occupying a more compact enclosure.
ACM changes the effective compliance of air in the common chamber.
This is caused by the asynchronous signals to each driver.
With out delay both drivers act as a normal dual driver vented system and produce symmetric pressure in the internal chamber, but interfere with each other’s acoustic output.
The delay on the bandpass loaded woofer produce summation of the acoustic output but produces asymmetric pressure in the internal chamber.
ACM produces significantly more low-frequency output from a smaller enclosure.
The plot above illustrates the advantages of ACM over simple vented designs, the hs-221 produces the same SPL with a half octave lower response than industry leading dual 21 inch vented systems.
es-269 Uber Compact Dual 6×9-inch ACM Subwoofer System
es-269 Uber Compact Dual 6×9-inch ACM Subwoofer System
- Exceptionally low front profile: Architect-pleasing design with esoteric audiophile quality and professional audio output down to 40 Hz
- ACM (Active Compliance Management): Patent-pending hybrid design combines both band-pass and vented alignments into a single, compact footprint for more output and definition.
- Very low distortion with professional sound pressure output
- Innovative Purpose-designed dual 6×9-inch high output cone transducers
- Premium birch plywood enclosure with extensive internal bracing and a highly-durable Dura Coat finish.
- Specially designed for use with the VUEDrive V242 Systems Engine to provide a new level of sonic accuracy and output
- Flexible mounting bracket allows fixed installation on the wall or to the cei
Learn more about the es-269 Uber Compact Dual 6×9-inch ACM Subwoofer System
hs-20 Dual 10-inch ACM Ultra Compact Subwoofer System
hs-20 Dual 10-inch ACM Ultra Compact Subwoofer System
- 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: Onboard amplifier supplies 500W pure sine wave power (800W “peak” power) to each woofer.
- Purpose-designed transducers: Dual 10-inch, long-excursion woofers with dual layer, inside/outside wound 64 mm voice coils
- Built for the road: Premium birch plywood enclosure with extensive internal bracing and a highly-durable Dura Coat finish.
- SystemVUE software: Mac 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
Learn more about the hs-20 Dual 10-inch Ultra Compact Subwoofer System
hs-25 Dual 15-inch ACM Compact Subwoofer System
hs-25 Dual 15 inch ACM Subwoofer System
Amazingly high output form a copmact system utlizing Active Compliance Management: A hybrid design that combines both band-pass and vented alignments into a single, compact footprint to produce significantly more output than conventional dual 15-inch designs.- Tons of horsepower: amplifier supplies 2x 830W pure sine wave power (4000W “peak” power) to each woofer.
- Standard IP for easy networking: Fully compatible with standard IP networks. Simply plug in, and the system will automatically connect to virtually any kind of IP configuration. Users can access and monitor network and device-level parameters through our SystemVUE software.
- SystemVUE software: Mac and Windows compatible SystemVUE software provides access to all VUE devices on the network as well as device level parameters such as speaker protection, input/output levels, volume, mute, delay and even input sources.
Learn more about hs-25 Dual 15 inch ACM Compact Subwoofer System
hs-28 Dual 18-inch ACM Subwoofer System
hs-28 Dual 18 inch ACM Subwoofer System
- 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 supply 830W pure sine wave power (2000W “peak” power) to each woofer.
- 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 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
hs-221 Dual 21-inch ACM Subwoofer System
hs-221 Dual 21 inch ACM Subwoofer System 
- Active dual 21-inch ACM Subwoofer system
- Ideal for Large Format Touring, Dance Clubs, and EDM Events
- 147 dB SPL peak output in free field (143 db SPL half space environment – ground plane)
- Flat Response down to 25 Hz in ELF (Extended Low Frequency Mode)
The plot above illustrates the advantages of ACM over simple vented designs, the hs-221 produces the same SPL with a half octave lower response than industry leading dual 21 inch vented systems.
es-269 Uber Compact Dual 6×9-inch ACM Subwoofer System Learn more about the es-269 Uber Compact Dual 6×9-inch ACM Subwoofer System hs-20 Dual 10-inch ACM Ultra Compact Subwoofer System Learn more about the hs-20 Dual 10-inch Ultra Compact Subwoofer System hs-25 Dual 15 inch ACM Subwoofer System Learn more about hs-25 Dual 15 inch ACM Compact Subwoofer System hs-28 Dual 18 inch ACM Subwoofer System hs-221 Dual 21 inch ACM Subwoofer System
Amazingly high output form a copmact system utlizing Active Compliance Management: A hybrid design that combines both band-pass and vented alignments into a single, compact footprint to produce significantly more output than conventional dual 15-inch designs.
