ETI Sound Systems, INC ACT18 Getting to Know Your ACT-18 Active 18 Subwoofer, Panel Controls

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GETTING TO KNOW YOUR ACT-18 ACTIVE 18” SUBWOOFER

PANEL CONTROLS

11) Level Control: Sets the volume of the subwoofer

12) Phase Switch: Sets the polarity of the ACT-18.

13) Power Indicator: The Power indicator lights when the ACT-18 amplifier has been turned on and has power.

14) Protection: Red LED turns on when distortion is audible in the amplifier output. This indicates that you should turn the amplifier down.

15) Right & Left Inputs: These inputs are summed and sent to amplifier’s Low Pass filter (120 Hz and below).

16) Right & Left Full-Range Outputs: Send stereo full-range signal allowing daisy chaining of additional subwoofers. You do not need to y-cable out of your mixer or audio device to get an additional full- range signal.

17) Right & Left High-Pass Outputs: Send stereo high-pass signal (120 Hz and above) directly to active, full-range speakers or through a rack mount amplifier to passive speakers.

18) External Speaker On/Off Switch: Turns Speakon NL-4 connector (and external subwoofer) on and off. When only using the ACT-18, turn this switch off. When an external, non-powered subwoofer (ACT-18S) is connected, turn this switch on. NEVER turn switch on or off while amplifier is turned all the way up.

19) External Speaker Output: The Speakon NL-4 connector connects the amplifier to an external, non-powered subwoofer (ACT-18S). Either pins 1+ and 2+ can be used as the positive connection. Either pins 1- or 2- can be used as the Negative Connection. External subwoofer must be 8 Ohms

10) ON/OFF Switch: Turns the ACT-18 amplifier on or off. The ACT-18 will only turn on when the amplifier detects an audio signal.

11) Fuse Holder: Houses a fast-resetting 12 amp fuse.

12) Power Cord Connector: For attachment of the included power cord.

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Contents Page Important Safety Information Heed ALL WarningsSetting Up Your ACT-18 Subwoofer Getting to Know Your ACT-18 Active 18 Subwoofer Panel ControlsACT-18 ACT-18 Digital AmplifierConnecting Your ACT-18 To Active Full-Range Speakers Warranty Information Daisy-chaining Your ACT-18 To Additional ACT-18 SubwoofersI. Sound SYSTEMS, INC

ACT18 specifications

ETI Sound Systems, Inc. has made a significant mark in the professional audio equipment industry, particularly with their flagship product, the ACT18. This state-of-the-art loudspeaker system is designed to cater to a variety of live sound applications, ensuring that audio professionals have access to a powerful and reliable sound solution.

The ACT18 is characterized by its impressive low-frequency response and high output capabilities. It features an 18-inch high-efficiency woofer that delivers deep, punchy bass, making it ideal for applications such as concerts, festivals, and other live events. The woofer is engineered with a robust magnetic circuit and a large voice coil, which contribute to its ability to handle high power levels while maintaining clarity and precision.

One of the key technologies integrated into the ACT18 is the advanced digital signal processing (DSP) module. This feature enables users to fine-tune the audio output according to the specific requirements of the venue and type of performance. With customizable EQ settings, delay options, and crossover configurations, the DSP ensures optimal sound reproduction and maximizes the performance of the loudspeaker in any environment.

In addition to its acoustic capabilities, the ACT18 is designed with durability in mind. The enclosure is constructed from high-quality plywood, coated with a rugged finish to withstand the rigors of touring and frequent transport. The loudspeaker is also equipped with reinforced corners and handles, making it easier for audio professionals to maneuver and set up quickly.

Further enhancing its versatility, the ACT18 can be used in various configurations. It can be deployed as a standalone unit, paired with other loudspeakers, or integrated into a larger sound system. This flexibility makes it suitable for both small venues and large-scale events.

Safety features are also a priority in the ACT18 design. The loudspeaker includes thermal protection circuitry to prevent overheating during prolonged use, ensuring reliability and longevity. Additionally, the connectors are designed for secure integration with other audio equipment, reducing the risk of accidental disconnections.

In summary, the ETI Sound Systems, Inc. ACT18 stands out as a powerful, reliable, and versatile loudspeaker system. Its advanced features, including high-efficiency technology, digital signal processing, and robust construction, make it an excellent choice for audio professionals looking for quality sound in demanding environments. Whether for live performances, installations, or event production, the ACT18 continues to deliver outstanding audio performance, setting a new standard in the pro audio market.