Speaker Loads and Wiring - bustedgear One way is called "series wiring" and the other is called "parallel wiring". Wiring two speakers in series doubles the impedance of one speaker. Wiring two speakers in parallel halves the impedance of one speaker. For example, the diagram below shows you how you can turn a pair of 8Ω speakers into either a 16Ω or a 4Ω load. Speaker Wiring Configuration Diagrams | Eminence Speaker View our speaker wiring configuration diagrams to properly match speaker load with your amplifier’s output impedance to get maximum transfer of power. Support Wiring Diagrams. It is important to match the speaker load with your amplifier’s output impedance for a couple of reasons. One reason is that you will get maximum transfer of power. Wiring a 2 X 12 Speaker cabinet Wiring a 2 X 12 Speaker cabinet Note: For 4 speaker solutions see: Wiring a 4 X 12 Speaker cabinet. In this set of wiring diagrams, all speakers in the same cabinet are the same impedance. Voice Coil Tweeters, if used, may not be the same impedance, it depends on how they are used.