User manual B-52 AT212

[. . . ] IMPORTANT SAFETY INSTRUCTIONS! 1) 2) 3) 4) 5) Read these instructions. DO NOT turn on the AT-212 without the loudspeaker connected. Be extra cautious when moving the AT-212 during rain or while transporting it over wet surfaces as water might splash onto the amplifier. Do not block any ventilation openings and operate in accordance with manufacturer's instructions. [. . . ] CHANNEL SELECT: Push switch selects between the clean and overdrive channels. Activated LED lights indicate which channel is in use. 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. CLEAN CHANNEL - MIDDLE: Adjusts the amount of mid-range 4 26. AC INLET & PRIMARY FUSE: Connects AC powercord and houses primary fuse. Always use correct value as indicated on amp panel chart. 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. 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. GROUND / LIFT SWITCH: Removes ground from the circuit to eliminate 60-cycle hum. LOUDSPEAKER OUTPUTS: Connects the AT-212 to the speaker cabinets such as the AT-412A or AT-412B. 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). 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. AT-212: CONTROLS AND FEATURES 16. 17. 21. frequencies as desired in the clean channel. Turning the middle control clockwise will increase the amount of warmth in your tone. Counterclockwise settings create a more pristine, acoustic kind of sound. CLEAN CHANNEL - TREBLE: Adjusts the amount of high frequency boost or cut as desired in the clean channel. [. . . ] determines that the unit was defective in materials or workmanship at any time during the warranty period, E. T. I. has the option of repairing or replacing the product at no additional charge, except as set forth below. All replaced parts become a property of E. T. I. Products replaced or repaired under this warranty will be returned via ground-shipping-within the United States-freight prepaid. [. . . ]