ETI Sound Systems, INC AT-100 specifications 37. 3-SETTINGRECTIFIER SWITCH

11.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.

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

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

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

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

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

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

18.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.

19.OVERDRIVE CHANNEL – MIDDLE: Adjusts the amount of 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.

20. 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.

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

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

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

24. INPUT CONNECTOR - LOW: Connects your guitar to the AT-100. B-52 recommends that you use a cable that is screened or shielded.

24. INPUT CONNECTOR - HIGH: Plug your guitar into either one. Use the one that sounds best to you. Always use a high quality, shielded instrument cable.

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).

35. LOUDSPEAKER OUTPUTS: Connects the AT-100 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.

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

37. 3-SETTING RECTIFIER SWITCH:

SOLID-STATE – Gives tightest low-end definition and fastest attack.

TUBE AB1 – Punchy, warm and tighter definition than Tube A. TUBE A – “Vintage” attack and feel. Warmest sounding setting.

38. POWER TUBE FUSE: Power tubes failure fuse

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

Always use correct value as indicated on amp panel chart. 5