Whole channel on PowerPod 820 is dead. How to fix?

SOURCE: why do i have echo

Visit this link to download the manual if you don't have it already. https://phonic.box.net/shared/crqxhlhmmz
This mixer has a multi-effects processor onboard, but the key is understanding the audio signal chain. There is a chance that you have your input audio going through an undesired effect, but without knowing your setup (input source, connections, mixer settings), it would be difficult to pinpoint the problem.

SOURCE: what is the ideal speaker specification to match

to get the best from this mixer output wise, you need to use 4ohm speakers rated at 150watts each. The 200 wat rating is at 4ohms. You can use 8 ohm speakers, but they recomend speakers at 70watts.

Gig wise, you could do a small location that will cater for about 40 people, but that would be pushing your system to the max.

Maximum possible set up? well there is a way to work most scenarios you are given, but it is not best practice.

Ideally, you know what instruments and vocals you want to go through the system, a rough idea of the size of venues you wil play and then ask questions on a system to suit.

SOURCE: powerpod 820 will not turn on. When connected to

There is a "Main L/R" button which most people have pressed to enable
the main speakers. Turn off the button. Then turn the unit on.

Then turn on the button again. Solved this issue for me.