Speaker / Amplifier Wiring Guide - DIY Audio & Video Usually, 18 gauge wire is sufficient, except for high power (subwoofer) applications. Different wires will have different line capacitances, which can cause the wire to act as a low pass filter. This is one of the selling points of high end cables. You may be temped to use typical electrical wire instead of speaker wire to save money. How to wire Four Speakers to One Amplifier - Geoff the For a practical discussion on how to wire just 2 speakers to an amplifier (4 speakers to a stereo amp), see my article on How to connect 2 speakers to 1 amplifier. If you need to wire more than four speakers, particularly in a commercial installation, see the article on Distributed Speaker Systems.Author: GeoffFour Speakers Wired in ParallelThis diagram shows how to wire four speakers in parallel. Some people call this “daisy chain” as it connects one speaker after another, but it is r..Four Speakers Wired in SeriesThis diagram shows how to wire four speakers in seriesn this is not a recommended way of wiring four speakers (although it will work), nor is..Four Speakers Wired in Series-ParallelThis diagram shows how to wire four speakers in series-parallel is a safe way of wiring four speakers (without a switch box or separate volume..Speaker Selector With Volume ControlsA more practical (and a little bit more expensive) way it to substitute the selector switch with a unit that also has volume controls. This allows..Practical Considerations in Wiring Four SpeakersThe above installations will work, but they have some limitations. The biggest limitation is the volume control on the amplifier. This controls the..