MTX Audio UK

MTX Audio buying guide for 2026

MTX Audio is a US car audio brand founded in 1971, and one of the few names to cover the full chain from head units through speakers and subwoofers to amplifiers. Bass Junkies has stocked MTX for over two decades, and the Terminator and Thunder subwoofer lines remain among the best-value high-output options on the UK market today. Customers come back to MTX for the durability and the no-nonsense power ratings, with many fitting the same Terminator subwoofer over a decade later in a different car or motorhome build entirely.

MTX subwoofers

The Terminator series covers 10-inch, 12-inch and 15-inch single voice coil models rated 200 to 400 watts RMS. The Thunder series steps up power handling, magnet weight and cone strength for SPL competition and demo builds. Shallow-mount versions are available for builds where deep enclosures are not practical, and pre-loaded boxes save time on the workbench when you need a same-day fit before a weekend show.

MTX speakers

The MTX coaxial line is built around durable mica-injected cones and silk-dome tweeters. Sizes run from 4-inch through 6-inch, 6x9-inch and 6.5-inch. Component sets add crossovers and external tweeters for staging on the dashboard or A-pillars. The 6x9 models in particular are still a strong seller for rear shelf upgrades on saloons and estates that have the factory location and a parcel shelf to mount into.

Brand quality at a glance

• MTX Terminator TNE. Entry-level subwoofers and matched bass boxes.
• MTX Thunder. Mid-tier subs for daily-driver SPL and SQ builds.
• MTX 35-Series. Higher trim coaxial speakers with PEI dome tweeters.
• MTX TX Class D. Compact mono amplifiers from 250 to 1000 watts RMS.
• MTX Multi-channel amplifiers. Four-channel TX models for full-system builds.

MTX amplifiers

The TX series mono amplifiers pair perfectly with Terminator and Thunder subs. The four-channel TX amps handle front and rear speakers in a typical build. Class D efficiency keeps current draw modest, which is important for stock charging systems in modern cars where the alternator is sized to factory load and not to a 1000 watt aftermarket system on top of heated seats and air conditioning.

Compatibility and fitting

• Amplifier wiring kit. 4-gauge for builds over 500 watts, 8-gauge for compact installs.
• High-low converter. Required if your head unit has no RCA pre-outs. We can supply.
• ISO harness. When pairing an MTX head unit with a modern car loom, the right ISO adapter avoids cutting.
• Fascia adapter. Converts a single-DIN factory dash for an MTX double-DIN head unit.

MTX warranty in the UK

MTX Audio products carry a one-year UK warranty when sold by an authorised retailer, with extended cover on selected Thunder and Terminator subwoofers. Bass Junkies is an authorised MTX dealer and will register your serial number at the point of dispatch, so cover starts the day the order leaves Wolverhampton and not the day the customer remembers to send paperwork.

Best MTX package picks for 2026

• Daily driver pick. Terminator 12-inch sub with TX mono amp and 4-gauge wiring kit.
• Audiophile pick. Thunder 10-inch sealed enclosure plus 35-Series component speakers up front.
• Loud daily. Thunder 12-inch ported with 750 watt TX amp and a high-output alternator.
• SPL build. Thunder 15-inch with 1000 watt TX amp and zero-gauge wiring upgrade.

Why buy from Bass Junkies

Bass Junkies has been an authorised MTX Audio dealer from our Wolverhampton workshop since 1995. Every MTX order ships with free UK delivery, an authorised UK warranty card and our same-working-day dispatch. Call 01902 863 005 for a tailored MTX system recommendation matched to your car and music taste, or stop by the workshop for a live in-car demo of the Thunder and Terminator subwoofer range.