Underseat Subwoofers

Best Underseat Subwoofer Australia - Space-Saving Bass for Your Vehicle

Looking for the best underseat subwoofer Australia has to offer? Add powerful, deep bass to your car audio system without sacrificing boot space. Our range of compact underseat subwoofers delivers exceptional low-frequency performance in a slim profile that fits discreetly beneath your seats.

Premium Brands Available

Featuring top-tier underseat subwoofers from JBL, Phoenix Gold, Infinity, Hertz, and more - trusted names in high-performance car audio.

Key Features

• Compact Design – Slim enclosures ranging from 6" to 10" that install under front or rear seats
• Powered Options – Active subwoofers with built-in amplifiers from 80W to 900W for easy installation
• Passive Enclosures – Connect to your existing amplifier for custom system builds
• Plug-and-Play Installation – High and low-level inputs with auto turn-on functionality
• Remote Bass Control – Adjust bass levels from the driver's seat on select models

Perfect For

Ideal for vehicles where boot space is at a premium, dual-cab utes, sedans, and anyone wanting to add serious bass without a bulky enclosure. Whether you're upgrading your daily driver or building a complete audio system, our selection of the best underseat subwoofers in Australia provides powerful low-end performance in a space-efficient package.

Available for delivery across Australia or professional installation at our NSW locations. Expert advice and support from the team at Frankie's Auto Electrics.

Frequently Asked Questions

Do I need an amplifier for an underseat subwoofer?

It depends on the model. Active (powered) underseat subwoofers have a built-in amplifier — no separate amp needed. Passive underseat subwoofers require an external amplifier.

Will an underseat subwoofer fit under my seat?

Most are slim and compact (6–10 cm height), but clearance varies by vehicle. Measure your seat space and check product dimensions before purchasing.

How do I install an underseat subwoofer?

Active models connect to your head unit's speaker outputs or RCA pre-outs and draw power from your battery. Professional installation is available at our NSW locations.

What's the difference between active and passive underseat subwoofers?

Active: Built-in amp, easier install, ideal for everyday setups. Passive: Requires a separate amp, better for custom builds with more tuning control.

Can I use an underseat subwoofer with my factory head unit?

Yes! Most active models include high-level (speaker) inputs that connect directly to factory head unit speaker wires — no aftermarket head unit required.

How much power do underseat subwoofers produce?

Our range covers 80W to 900W RMS. The right power level depends on your vehicle size and listening preferences — our team can help you choose.

Do you offer professional installation?

Yes — at our NSW locations. Our technicians handle everything from simple plug-and-play setups to full custom audio builds.

What brands do you stock?

We stock JBL, Phoenix Gold, Infinity, Hertz, and more — all selected for build quality, performance, and reliability.