How To Connect 4 Speakers To A 2 Channel Amp? 3 Simple Methods

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Many suppose they can connect only one to two speakers to a 2-channel amplifier, but that’s not the case.

This guide will reveal some straightforward yet practical tips on how to connect 4 speakers to a 2 channel amp.

Whether you have multiple speakers and don’t know what to do with them or just looking to supplement your home system with some DJ speakers, we’ve got your back!

How To Connect 4 Speakers To A 2 Channel Amp?

You can use three methods to wire your speakers and amplifier together:

  • In series
  • In parallel
  • Use a speaker selector switch

Which method to opt for depends on your amp and loudspeakers, particularly their limits and impedance levels.

Series Configuration

how to connect 4 speakers to a 2 channel amp
If you do it correctly, the series configuration will work. (Photo)

It is commonly not advisable to wire multiple speakers to an amp in series.

However, we’ve tried and realized that all four loudspeakers and the amplifier connected in series performed relatively well and produced quite a fresh sound.

So, follow these steps to wire your devices in the series configuration:

  • Identify the negative and positive terminals from the amplifier by checking both wires’ dog tails which may have negative and positive markings on them.
  • After that, pair the amp’s positive terminal to the first loudspeaker’s positive terminal in a series configuration.
  • Then, connect the first loudspeaker’s negative terminal to the second one’s negative terminal using another wire.
  • Keep doing so until you finish all the connections. After that, connect the two-channel amplifier’s negative terminal to the last loudspeaker’s negative terminal in a series configuration using an isolated wire.
  • Close the series.

This method is elementary for beginners since you just need to connect two terminals in several rounds manually.

Parallel Configuration

Connecting in parallel is the most broadly used technique since many say it can yield the best audio results. In our experience, it’s true if you do it correctly.

You first need to ensure your amplifier is of high quality, or else sound degradation and distortion will occur quickly. Then, do as follows to perform the connection:

  • Start by wiring the negative and positive terminals of the amp’s left channel to the left loudspeakers’ positive terminals.
  • Likewise, wire the first loudspeaker to the second one by pairing the positive terminal to the positive one and the negative to the negative.
  • Conduct the same process for the next couple of loudspeakers. Remember to pair only the terminals on your amplifier’s right side.

If you’re still confused about the difference between parallel and series configurations, watch this video:

Use A Speaker Selector Switch

Selection switches work effectively with multi-room audio devices. (Photo)

You can utilize a speaker selector switch to protect your amp from overload instead of performing a connection. This device can also distribute sound to multiple speakers evenly.

So, stick to these straightforward instructions to do the job:

  • Follow your two-channel amplifier diagram. Navigate your switch, loudspeakers, and amp’s positive ends.
  • Pair the amp’s positive end with the selector switch’s positive end.
  • After that, pair the switch’s negative end with the amp’s negative one.
  • Next, pair your loudspeakers to the selector switch each by each. Ensure to pair positive ends together; the same goes for negative ones.
  • Once finished, you can enjoy the fresh sound your four speakers deliver to you.

A minor note is that this technique applies best to installing multi-room loudspeakers in your theater system. We don’t recommend using a selector switch for a commercial system that goes beyond 100 watts.

Bonus Tips On Connecting 4 Speakers To A 2 Channel Amplifier

Since a system of four loudspeakers and a two-channel amp is not always the first choice, it may pose some risks you should be mindful of.

The below tips will, in part, help you deter some hazards from occurring:

  • Avoid overloading your amplifier. You’ll risk destroying it if you force it to work too much.
  • Check your audio equipment’s impedance level before running the connection to guarantee a 100% compatible setup.
  • Avoid pushing your amplifier to its limit since this may cause distortion and make your device struggle to process and reproduce bass.
  • Don’t forget to check the manufacturer’s manuals and follow all the safety standards and precautions.

It’s not worth sacrificing your expensive audio system because of silly mistakes, right? If you’re uncertain about anything with your equipment, don’t try to do it before asking a professional. It’s just that simple.

Bottom Line

In closing, the more speakers, the more volume and the greater your music enjoyment. Still, remember that your equipment may overload if you don’t run the connection correctly.

The three techniques above can yield fresh, excellent sound, yet not every method will apply to every audio setup.

So, check the manufacturer’s instructions to know what power ratings are suitable for your devices.