In some car audio systems, it may be possible to wire subwoofer to 2 ohms, but it depends entirely on the subwoofer design, voice coil configuration, amplifier stability and wiring layout.
Not every subwoofer can be wired to any impedance you choose. A single voice coil subwoofer has a fixed impedance, such as 2 ohms or 4 ohms, and that cannot be changed by wiring. A dual voice coil subwoofer or a system with multiple subwoofers may offer more wiring options, allowing the final impedance load to be changed depending on how the voice coils or subwoofers are connected.
A 2-ohm subwoofer load can sometimes allow a compatible amplifier to produce more power, but only if the amplifier is designed to operate safely at 2 ohms. If the final impedance is too low for the amplifier, it may overheat, distort, shut down in protection mode or become damaged.
Subwoofer wiring also affects bass performance, reliability and system safety. RMS power handling, amplifier output, impedance stability, enclosure design and gain settings all need to be matched correctly. More power is not useful if the system is wired incorrectly or pushed beyond safe limits.
For the safest result, do not guess your subwoofer wiring configuration. Speak with your nearest Focal Authorised Australian Dealer before wiring your subwoofer to 2 ohms. A professional dealer can confirm your subwoofer’s voice coil configuration, check amplifier compatibility and recommend the correct wiring setup for clean, powerful and reliable bass performance.
