AT-212 - CONTROLS AND FEATURES

1. LOW/HIGH INPUTS: Plug your guitar in here. Use the input that best suits your playing style. Most players use the High input for maximum gain. For a cleaner sound, use the Low input. Always use a high quality, shielded instrument cable.

2. OVERDRIVE CHANNEL – GAIN 1: Adjusts the amount of distortion in Gain 1. (Activated LED indicates in use).

3. OVERDRIVE CHANNEL – GAIN SWITCH: Push switch Selects between Gain 1 and Gain 2 controls. Activated LED lights indicate which channel is currently use.

4. OVERDRIVE CHANNEL – GAIN 2: Adjusts the amount of distortion in Gain 1. (Activated LED indicates in use).

5. OVERDRIVE CHANNEL – BASS: Adjusts the amount of low frequency boost or cut as desired in the overdrive channel. Bass is B-52’s signature. Turning this control clockwise increases depth and low-end punch to your music.

6. OVERDRIVE CHANNEL – MIDDLE: Adjusts the amount of

WARNING: SHOCK HAZARD!

To reduce the risk of fire or electrical shock, do not expose this unit to rain or moisture. Do not operate your AT-212 near a pool or other standing water. Make sure all blades on the polarized power plug are fully inserted into the power source. Ensure the powercord is not stretched, pinched or otherwise abused. Ensure the power cord is routed to avoid foot traffic. Your AT-212 amplifier should be cleaned only with a dry cloth.

26. AC INLET & PRIMARY FUSE: Connects AC powercord and houses primary fuse.

Always use correct value as indicated on amp panel chart.

27. POWER TUBE FUSE: This fuse protects the AT-212 against circuit damage caused by a power tube failure. Only replace with a 1 AMP Fast Blo (never Slo Blo) fuse.

28. 3-SETTING RECTIFIER SWITCH:

SOLID-STATE – Gives tightest low-end definition and fastest attack. TUBE AB1 – Punchy, warm and tighter definition than Tube A.

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TUBE A – “Vintage” attack and feel. Warmest sounding setting.

 

mid-range frequencies as desired in the overdrive channel. Similar to the Clean Channel function, the O.D. Channel Middle control adds body and punch to your sound.

7. OVERDRIVE CHANNEL – TREBLE: Adjusts the amount of high frequency boost or cut as desired in the overdrive channel. Turning this control clockwise adds clarity to your sound.

8. OVERDRIVE CHANNEL – GAIN SWITCH 1: Activates the CONTOUR control for Gain 1.

9. OVERDRIVE CHANNEL – CONTOUR: Varies the critical midrange tone in the overdrive channels. Adjusts from “classic” midrange punch to “scooped metal” madness.

10. OVERDRIVE CHANNEL – GAIN SWITCH 2: Activates the CONTOUR control for Gain 2.

11. OVERDRIVE – VOLUME 1: Controls the overall volume of the medium gain overdrive channel.

12. OVERDRIVE – VOLUME 2: Controls the overall volume of the high gain overdrive channel.

13. CHANNEL SELECT: Push switch selects between the clean and overdrive channels. Activated LED lights indicate which channel is in use.

14. CLEAN CHANNEL - BASS: Adjusts the amount of low frequency boost or cut as desired. Adding bass will increase the depth and fullness of your sound.

15. CLEAN CHANNEL - MIDDLE: Adjusts the amount of mid-range

29. GROUND / LIFT SWITCH: Removes ground from the circuit to eliminate 60-cycle hum.

30. LOUDSPEAKER OUTPUTS: Connects the AT-212 to the speaker cabinets such as the AT-412A or AT-412B.

NOTE: Always be sure the speakers are plugged in before attempting to operate the amplifier. Always use a high quality, heavy duty, unshielded speaker cable. Severe damage can occur from failing to connect the speakers and properly setting the impedance selector switch.

31. IMPEDANCE SELECTOR SWITCH: Allows the AT-212 to safely operate into any 4 ohm, 8 ohm or 16 ohm cabinets(s). NOTE: Always set the switch to match the impedance of your cabinet(s).

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ETI Sound Systems, INC manual AT-212 Controls and Features
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AT-212 specifications

ETI Sound Systems, INC has made significant strides in the field of audio technology with its flagship product, the AT-212. This speaker system has garnered attention for its impressive sound quality, versatility, and innovative features, making it a popular choice among audio enthusiasts and professionals alike.

The AT-212 is designed to deliver an exceptional sound experience, thanks to its dual 12-inch woofers that provide deep, resonant bass and impressive mid-range response. Coupled with a high-frequency compression driver, the system ensures crystal-clear treble, making it ideal for both music playback and public address situations. This combination of drivers allows the AT-212 to produce a wide frequency range, ensuring that every note is accurately represented.

One of the standout features of the AT-212 is its robust construction. The cabinet is built from high-quality, durable materials designed to withstand the rigors of regular use, whether in a concert setting, a nightclub, or a home audio system. ETI Sound Systems has also invested in advanced acoustic engineering to ensure that the speaker minimizes distortion, providing clean and accurate sound reproduction across its operating range.

The AT-212 incorporates advanced technologies that set it apart from its competitors. With built-in digital signal processing (DSP), users can enjoy optimized audio performance tailored to their environment. This feature allows for precise equalization and can adapt the sound output according to the acoustics of the space, ensuring the best listening experience in various settings. The user-friendly interface contributes to the system's appeal, making it easy for users to customize their sound without needing extensive technical knowledge.

Portability is another key characteristic of the AT-212. Weighing in at a manageable size, it includes integrated handles and mounting points for easy transport and setup. This makes it an excellent option for DJs, live performers, and event planners who need to move equipment frequently.

In terms of connectivity, the AT-212 offers a variety of options, including XLR inputs and outputs, allowing for seamless integration with other audio equipment. It also supports both passive and active configurations, providing flexibility for different user needs.

In summary, the ETI Sound Systems, INC AT-212 is a powerful, versatile speaker system that combines solid construction, innovative technology, and user-friendly features. With its ability to deliver high-quality sound across a range of applications, it stands as a reliable choice for audio professionals and enthusiasts alike, ready to enhance any audio experience.
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