A low impedance speaker installation patch box for removing the confusion of parallel and series speaker wiring. Top mounted configuration switches can be set to stereo mode with either 2x2 or 2x4 speakers, or a mono mode with eight speakers. For 16 speaker configurations, two patch boxes will be required. Speakers are connected to the patch box via Phoenix-style connectors that are included with each module. For installation purposes, the patch box is meant to be placed in the middle of a large speaker installation with speaker leads feeding out from the box and a feed from a power amplifier will run to the binding posts mounted on the side. The SPB-8420 is ideal for connecting eight 8Ohm speakers to one amplifier whilst maintaining a safe impedance level.