SP-DRIVER 54 / 150W RMS (UNIT PRICE)
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SUPER POWER AUDIODESIGNED IN ITALY
MMXXVI
150 watt RMS.
Horn already on it.
A compression driver sold complete with its ABS+PC horn: 109 dB sensitivity, a 51.6 mm voice coil on a titanium diaphragm, a 25.4 mm (1") throat and 150 W RMS at 8 ohm nominal. Usable range 600 Hz – 20 kHz. The price on this page is for one piece.
Power, measured not promised
PER DRIVER · RMS IS CONTINUOUS POWER, NOT BURST · NOMINAL 8 Ω
Why this driver
A compression driver turns a few watts into a lot of pressure. At 109 dB SPL 1W/1M it stays on top of the midranges and the subwoofer without asking much of the amplifier.
The moving part is a titanium diaphragm driven by a 51.6 mm coil, wound in two layers of CCAW on a Kapton former. That is what keeps the top end clean at high level.
You are not buying a bare motor: this unit ships with its ABS+PC horn already fitted. Nothing else to buy to make it play.
A ferrite ring magnet ⌀135 × ⌀70 × 17 mm, 1.90 T of flux density and a 7 mm magnetic gap. It weighs 2.79 kg — mass is what keeps a driver stable when it gets hot.
Look at it closely
Titanium diaphragm, 51.6 mm voice coil, 25.4 mm (1") throat. Everything the driver produces passes through that throat before it enters the horn.
Ferrite ring ⌀135 × ⌀70 × 17 mm, 1.90 T in a 7 mm gap, T-yoke 8 mm. Overall 180 mm, 160 mm deep, 2.79 kg.
Full specifications and mounting data, straight from the 2026 factory sheet.
⇩ Open the manual (PDF)English · 2026 · opens in a new tab
What you receive
The price on this page is for one piece, not a pair. The driver arrives with its ABS+PC horn already mounted, ready to bolt to the baffle. Packed in the SP Audio box; the factory carton holds 2 pieces.
In the box: 1 × SP-DRIVER 54 compression driver with its ABS+PC horn · SP Audio packaging.
Not included: crossover, capacitors, speaker cable and mounting hardware — installation material, chosen for your car.
Technical specifications
| POWER & LOAD | |
|---|---|
| Rated power (RMS) | 150 W |
| Peak power (MAX) | 300 W |
| Nominal impedance | 8 ohm |
| DC resistance (Re) | 6.2 ohm |
| ACOUSTIC | |
| Sensitivity | 109 dB SPL 1W/1M |
| Frequency range (-10 dB max) | 600 Hz – 20 kHz |
| Resonance frequency | 600 Hz |
| Throat diameter | 25.4 mm (1") |
| Horn material | ABS+PC |
| MOTOR & MATERIALS | |
| Voice coil diameter | 51.6 mm |
| Diaphragm material | Titanium |
| Former material | Kapton |
| Winding material | CCAW, 2 layers |
| Winding depth | 2.4 mm |
| Magnet material | Ferrite ring |
| Magnet size | ⌀135 × ⌀70 × 17 mm |
| Flux density | 1.90 T |
| Magnetic gap depth | 7 mm |
| T-yoke depth | 8 mm |
| DIMENSIONS & PACKAGING | |
| Overall diameter | 180 mm |
| Bolt circle diameter | 158 mm |
| Baffle cutout diameter | 132 mm |
| Depth | 160 mm |
| Flange and gasket | 7.6 mm |
| Net weight | 2.79 kg |
| Factory carton (2 pcs) | 38 × 38 × 19 cm |
| Sold as | Single unit (1 piece) |
MANUFACTURER’S LABORATORY DATA · PEAK OR “BURST” FIGURES USED IN SOME MARKETS ARE NOT RMS AND ARE NOT LISTED
Complete the system
Before you install it
- It always needs a crossover. Never full range. A compression driver must never see the whole signal: run full range, the titanium diaphragm is gone in seconds. A high-pass filter, always.
- Do not cross it below 600 Hz. 600 Hz is the resonance frequency declared by the factory and the bottom of its usable range (600 Hz – 20 kHz). Going lower is the quickest way to break it.
- 8 ohm nominal, 6.2 ohm DC. Check what your amplifier does on 8 ohm before wiring several drivers in parallel on one channel.
- Aim it, and start with the gain low. A horn is directional: point it at the listener, then bring the level up slowly. Clipping kills drivers far more often than power does.
Questions installers ask
spaudio@spaudio.it · +39 340 807 8778
Accepted payment methods
Visa · Mastercard · Maestro · American Express · PayPal · Apple Pay · Google Pay · Shop Pay · Klarna
SP Audio — Super Power Audio. Designed in Italy by Audiocar Import & Export SRLS, Milano, official SP Audio distributor for Europe.