PowerBass L-1A 1″ Aluminium Dome Tweeters | Crystal Highs

For over 30 years, Safe and Sound has helped UK drivers get more from their in-car audio — and the L-1A from PowerBass is the upgrade for listeners who want every last detail. This pair of 1″ aluminium dome tweeters delivers bright, crystal-clear high frequencies that bring flat factory sound to life, revealing the texture in your music that standard speakers simply gloss over.

Why choose the L-1A?

Most factory speakers sit low in the doors, so the detail in your music fires at your knees rather than your ears. A properly placed pair of tweeters changes that completely — vocals lift to the dashboard, instruments separate, and the whole soundstage opens up. The L-1A does it with an aluminium dome diaphragm, a material prized for its speed and precision, so cymbals shimmer and fine detail stays sharp even at volume.

• Bright, detailed sound — the aluminium dome reproduces crystal-clear highs from 3.5kHz to 21kHz without losing definition.
• In-line 12dB crossover included — computer-aided design ensures your tweeters always receive the proper signal, with nothing extra to buy.
• Three mounting styles in the box — flush, angle and surface mounts adapt to A-pillars, sail panels, door tops and dashboards.
• Engineered to last — a neodymium magnet and Ferrofluid cooling keep performance consistent and controlled at higher volumes.

Aluminium, silk or zirconium? Choosing your PowerBass tweeter

PowerBass offers three add-on tweeters, and the right one comes down to taste. The L-1A aluminium dome is the detail-lover’s choice — bright, precise and crystal clear. The S-1S silk dome trades some of that brightness for a smoother, more relaxed character, while the S-1ZT zirconium super tweeter goes the other way with maximum sparkle and bite. If you’re not sure which suits your music and your vehicle, the Safe and Sound team will happily talk it through — and our installers know exactly where to position any of them for the biggest improvement in imaging.

Key specifications

Specification	Detail
Type	1″ aluminium dome tweeters (pair)
Diaphragm	Aluminium dome
Magnet	Neodymium with Ferrofluid® cooling
Crossover	Computer-aided in-line 12dB, included
Mounting	Flush, angle and surface mounts included (0.75″ depth)
Impedance	4 ohms
Sensitivity	92 dB (1W/1M)
Frequency response	3.5 kHz – 21 kHz
Power handling	50 Watts RMS / 100 Watts peak

Perfect for almost any system

Because the L-1A is an add-on rather than a replacement, it works alongside whatever you already have — a standard factory stereo, an upgraded head unit, or a full amplified install. It’s an ideal finishing touch after a speaker or subwoofer upgrade, restoring top-end balance to a system that’s gained low-end weight.

Tip: tweeter placement and angle have a big effect on the end result, and pairing positions left-to-right matters for imaging. If you’d like advice on the best locations in your vehicle, the Safe and Sound team is happy to help before you buy.

What’s in the box

• Pair of L-1A 1″ aluminium dome tweeters
• Pair of in-line 12dB crossovers
• Flush, angle and surface mounting hardware