Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to tune a pa system [title] Set up your pa system, and make sure it is working. [step] Including your graphic equalizer (s). Make sure that the inputs of your eq are connected to the left/right outputs of your mixing desk and the outputs of the equalizer are connected to your main left/right power amps.

Ending1: [substeps] Your support amps have been pre-purchased from an electronic retailer. The full payment will go into the account with the eq, or online gift society, that sells drum components. Ending2: [title] Decide which brands of computers to download. [step] Although nearly all digital computers will ship in an identical style, some versions don't actually sync with headphones. Ending3: [title] Make sure that both the graphic eq and the eq on the mixing board are set' flat'. [step] That is neither boosting or attenuating any frequencies. Ending4: [title] Install your rgb just in case your system is tampered with by someone. [step] If so, make sure it is set to " no ".

Answer format: ending1/ending2/ending3/ending4