In this video I discuss how to match and connect a power amplifier to passive loudspeakers in the context of live sound reinforcement. Although active speakers are all the rage these days there is nothing wrong with good old passive speakers, and they have the advantage of only needing a single connection, as opposed to the signal and power connections needed on an active cabinet. Bookmarks for video: 00:00 Intro 01:08 The difference between active and passive loudspeakers. 02:45 Overview of a typical modern power amplifier. 10:25 Overview of a typical passive loudspeaker connector panel. 11:08 Step 1: Ensure amplifier and loudspeakers are correctly matched. 11:35 Step 1A: Determine power handling capacity of your loudspeakers 12:52 Step 1B: Determine loudspeaker impedance. 13:32 Step 1C: Calculate power delivery of amplifier into loudspeaker, based on impedance. 14:37 How to calculate the combined impedance of multiple loudspeaker cabinets. 17:17 Step 2: Connect mixer to power amplifier 17:47 Power amplifier modes: stereo, parallel, bridge mono. 20:51 Daisy-chaining power amplifiers 22:25 Step 3: Connect amplifier to loudspeakers. 25:58 Setting amplifier gain and level controls. For a comprehensive discussion on the topic of matching power amplifiers to passive loudspeakers, check out this video: https://www.youtube.com/watch?v=l9L7uK7Xy0w Do please get in touch with questions or comments! Support GLB Productions: https://www.patreon.com/glbproductions My Amazon Store: http://astore.amazon.com/glbpro-20 Ways to get in touch - I love hearing from my viewers! Website: http://glbproductions.com/ Facebook: https://www.facebook.com/GLBProductions