SP-1500.1 MINI — MONO CLASS D AMPLIFIER 1500W RMS
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SUPER POWER AUDIODESIGNED IN ITALY
MMXXVI
1500 watt RMS.
46 mm high.
One channel. All the current. Into one subwoofer, at 1 ohm — from a chassis that hides under a seat. Designed in Italy, verified with Audio Precision test equipment before it leaves the line.
Watch it
▶ NOTHING IS DOWNLOADED UNTIL YOU PRESS PLAY
Power, measured not promised
RMS @ 14,4 V · ≤ 1% THD+N · CONTINUOUS POWER, NOT BURST · MINIMUM LOAD 1 Ω
Why this amplifier
A single output stage delivers its full rated power into 1 ohm: no bridging, no compromise between two channels. Everything goes to one subwoofer.
270 × 112 × 46 mm. Under a seat, behind a side panel, inside a false floor: the boot stays usable and the cable runs stay short.
Input sensitivity 200 mV – 6 V. High-output head units and DSP processors drive it without clipping the input; low-level factory sources are covered too.
Short-circuit, thermal and voltage protection with LED diagnostics, 4 × 30 A on-board fuses. It defends itself instead of dying quietly.
Wiring, loads & impedance, filters, gain calibration and full specifications.
⇩ Download the manual (PDF)English · Rev. 1.0 · September 2026 · 1,3 MB
Not a box. A case.
The SP-1500.1 MINI arrives in a black wooden case with the SP mark and the tricolour on the lid. A rigid shell during shipping, the safest way to store or transport the amplifier afterwards — and a box people keep.
In the case: amplifier · collector’s wooden case · printed user manual · 4 mounting screws (3,5 × 20 mm).
Not included: power and speaker cable, inline fuse holder and RCA cable — installation materials, chosen for your vehicle.
Technical specifications
| POWER OUTPUT — RMS @ 14,4 V, ≤ 1% THD+N | |
|---|---|
| Mono 4 ohm | 600 W |
| Mono 2 ohm | 1000 W |
| Mono 1 ohm | 1500 W |
| Minimum load | 1 ohm |
| AUDIO | |
| Topology | Class D, mono, 1 channel |
| Frequency response | 10 Hz – 200 Hz |
| S/N ratio | ≥ 90 dB |
| Input sensitivity | 200 mV – 6 V |
| Inputs | RCA, R / L |
| FILTERS | |
| Low-pass filter (LPF) | 45 – 200 Hz, variable |
| Infrasonic (subsonic) filter | 10 – 50 Hz, variable |
| Bass boost | 0 – +12 dB, variable |
| POWER SUPPLY & PROTECTION | |
| Supply | 12 V negative ground, 14,4 V nominal |
| Remote turn-on | +12 V |
| On-board fuses | 4 × 30 A |
| Recommended cable | 4 AWG |
| Protections | Short circuit, thermal, voltage |
| Indicators | POWER (green) · PROTECT (red) |
| MECHANICAL & QUALITY | |
| Dimensions L × W × H | 270 × 112 × 46 mm |
| Mounting points | 4 |
| Construction | Aluminium, heat-dissipating fins, rubber bumpers |
| Terminals | Direct-insert, screw clamp |
| PCB | 2-layer, surface-mount technology |
| Verification | Audio Precision quality control |
| Packaging | Collector’s wooden case |
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
- Inline main fuse within 20 cm of the battery, sized to the cable. The amplifier is fused on board at 4 × 30 A, but the battery run must be protected too.
- Respect the minimum load: 1 ohm. A lower impedance triggers the protection and, if repeated, damages the output stage.
- Leave the fins free. The aluminium fins are the whole cooling system: never cover the amplifier with carpet, luggage or foam.
- 12 V systems only, negative ground. Professional installation is recommended: damage caused by improper installation is not covered by warranty.
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.