How do I wire two 4 ohm SVC speakers to get a 2 ohm load?

Per the diagram, wire them in parallel: connect the amplifier's positive terminal to the + terminal of both 4Ω speakers, and the amplifier's negative terminal to the − terminal of both speakers. This presents a 2Ω load to the amp.

What impedance does the amplifier see with two 4 ohm SVC speakers wired this way?

The diagram shows the amplifier output labeled 2Ω, meaning two 4-ohm SVC speakers wired in parallel present a 2-ohm load.

Who published this speaker wiring diagram?

The diagram carries the Rockford Fosgate logo.

Is this diagram for dual voice coil speakers?

No, it is titled for SVC (single voice coil) speakers — specifically two 4-ohm SVC speakers producing a 2-ohm load.

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Rockford Fosgate Wiring Diagram: (2) 4 Ohm SVC Speakers = 2 Ohm Load Parallel

Rockford Fosgate speaker wiring diagram, two 4-ohm SVC subwoofers wired to a 2-ohm load

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Speaker wiring diagram showing two 4-ohm single-voice-coil subwoofers wired in parallel to present a 2-ohm load.

AI caption February 2006 · Photo 109 of 220

This document is a speaker wiring diagram published by Rockford Fosgate showing how to wire two 4-ohm single voice coil (SVC) speakers to present a 2-ohm load to an amplifier. The diagram depicts the amplifier's output terminals (labeled 2Ω, with + and − polarity marks) connected in parallel to two subwoofer/speaker drivers, each labeled 4Ω with its own + and − terminals. In the parallel configuration shown, the amplifier's positive lead runs to the positive terminal of both speakers, and the negative lead runs to the negative terminal of both speakers, halving the effective impedance from 4 ohms per speaker to a combined 2-ohm load. A reader can learn the correct polarity and connection scheme for parallel-wiring a pair of 4-ohm SVC speakers, which is useful when matching speaker load to an amplifier's 2-ohm-capable output. The document contains no vehicle-specific information, part numbers, fuse data, or wire colors; it is a generic car audio wiring reference from Rockford Fosgate, uploaded to accompany a 1995 Ford Bronco audio installation.

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Frequently asked questions

How do I wire two 4 ohm SVC speakers to get a 2 ohm load?: Per the diagram, wire them in parallel: connect the amplifier's positive terminal to the + terminal of both 4Ω speakers, and the amplifier's negative terminal to the − terminal of both speakers. This presents a 2Ω load to the amp.
What impedance does the amplifier see with two 4 ohm SVC speakers wired this way?: The diagram shows the amplifier output labeled 2Ω, meaning two 4-ohm SVC speakers wired in parallel present a 2-ohm load.
Who published this speaker wiring diagram?: The diagram carries the Rockford Fosgate logo.
Is this diagram for dual voice coil speakers?: No, it is titled for SVC (single voice coil) speakers — specifically two 4-ohm SVC speakers producing a 2-ohm load.