Connecting two subwoofers to a one channel amp can take the bass to new heights and improve the sound but it comes at a cost – the wiring must be perfect. Here’s a guide that details all the steps on how to connect two subwoofers to a one channel amp, plus ways you can wire both devices.
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All You Need to Know Before Connecting Two Subs with a One Channel Amp
Because a one channel amplifier is designed to work with one or no subwoofer, connecting two subs with a single amp requires a bit of technical know-how. Here are a few details you should have in mind before joining the two devices together in hopes of a good, smooth bass:
Voice Coils
If you have two subwoofers on hand or plan to get one, make sure to choose the right voice coils for your system. A single voice coil subwoofer doesn’t necessarily perform better or worse than a dual voice coil subwoofer, but the latter is easy to configure because it offers multiple wiring options.
Wiring
The key to a good ‘two subs with one amp’ stereo system is the wiring. There are generally two methods of wiring available for amp and subwoofer connection, i.e series and parallel. The better the wiring of the voice coils and subs, the better the impedance load on the amplifier.
Impedance
The speaker impedance and load is the next essential feature to consider when connecting multiple subs to a single channel amp. It refers to how much load a speaker puts on the amplifier. Impedance is adjusted according to the amplifier’s power capabilities.
Maximum Load
When you’ve figured out the type of voice coil that’ll work for your system, wired the subs, and tested for the power output of your amplifier, it’ll help you understand what is the optimal load for your system. Knowing the range of minimum and maximum load can save you from the amp accidentally short-circuiting.