Audio EngineeringBy DavoD3 in CircuitsAudio812Build Your Own 2.1 Hi-Fi Audio System by Steve Willson Kujur in AudioPatterned Plywood Bookcase Speakersby amandaghassaei in AudioStereo Speakers With Synched LED Lightingby shingkai in SpeakersBuild a Pair of Stereo Speakersby billbob in SpeakersOutdoor 3-Way Speaker Sound System 12Vby themakeclass in CampingDIY Hi-Fi: WiBAQ Speakersby JoeBeau in AudioHiFi Speakers - a Guide for a First Class Buildby MatthewM425 in AudioSony Speaker Upgradeby Make Something TV in SpeakersDIY HiFi Bookshelf Speakers (Studio Reference)by ASCAS in SpeakersDIY Acoustic Panelsby Make And Repeat in Audio