SP-3500.1D - @2 ohm
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SUPER POWER AUDIODESIGNED IN ITALY
MMXXVI
3500 watt RMS.
into 2 ohm.
One channel, one subwoofer, all the current the car can give. Class D monoblock with forced cooling, variable filters and full protection — built for systems where the limiting factor is no longer the amplifier, but the electrical system behind it.
Power, measured not promised
RMS @ 14.4 V · CONTINUOUS POWER, NOT BURST · MINIMUM LOAD 2 Ω
Why this amplifier
A single class D output stage delivers 3500 W RMS into 2 ohm: no bridging, no power split between two channels. Everything goes to the subwoofer.
Smart cooling system with a temperature-driven fan on top of the finned chassis. The fan only spins when the amplifier asks for it, and the output stage keeps working when the music does not stop.
Variable low-pass 80 Hz – 10 kHz, high-pass 15 Hz – 80 Hz, bass boost 0 – 12 dB at 50 Hz and gain, all on the panel. An RCA output passes the signal on to a second amplifier and a port takes the remote level control.
Protection against output short circuit, high supply voltage, low supply voltage and overheating. It works from 9 V to 16 V, so a starting dip does not become a repair.
Connections and controls
Wiring, loads and impedance, filters and gain calibration.
⇩ Download the manual (PDF)What you receive
The SP-3500.1D arrives ready to be mounted: chassis with four fixing feet, direct-insert screw terminals and the complete control panel. Everything that goes around it — cable, fuse, ground, distribution — is chosen on the car, not on the amplifier.
In the box: amplifier · user manual (PDF above) · protective packaging.
Not included: power and speaker cable, inline fuse holder, RCA cable, distribution block and remote level control — installation material, chosen for your vehicle.
Technical specifications
| POWER PER CHANNEL — RMS @ 14.4 V | |
|---|---|
| Mono 2 ohm | 3500 W |
| Mono 4 ohm | 1800 W |
| Mono 8 ohm | 1000 W |
| Minimum load | 2 ohm |
| Topology | Class D, mono, 1 channel |
| POWER SUPPLY & PROTECTION | |
| Supply voltage | 9 V – 16 V (12 V negative ground) |
| Remote turn-on | +12 V |
| Power input terminals | 1 × GND / REM / +12 V |
| Thermal management | Smart cooling system, temperature-driven fan |
| Protections | Output short circuit, high voltage, low voltage, thermal |
| FILTERS & INPUTS | |
| Low-pass filter (LPF) | 80 Hz – 10 kHz, variable |
| High-pass filter (HPF) | 15 Hz – 80 Hz, variable |
| Bass boost | 0 – 12 dB at 50 Hz, variable |
| Frequency response | 10 Hz – 20 kHz (3 dB) |
| S/N ratio | 100 dB |
| Input sensitivity | 200 mV |
| Input impedance | 56 kΩ |
| Inputs / outputs | RCA input · RCA output · remote level control port |
| DIMENSIONS | |
| Dimensions L × W × H | 228 × 219 × 74 mm |
| Sold as | Unit |
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
- Cable section and fuse come first. On an amplifier of this class the run from the battery is normally 0 AWG, with a main fuse within 20 cm of the battery sized to the cable. An undersized cable is the most common cause of voltage drop and disappointing bass.
- Ground on clean metal, short. Scrape the paint off, use the same section as the positive and keep the ground lead as short as you can. Most “noise problems” are ground problems.
- Leave the fan and the fins free. The amplifier cools itself with a temperature-driven fan and a finned chassis: never cover it with carpet, luggage or foam, and leave air around it.
- Set the gain last, and set it as a match, not a volume. Bass boost at 0, source at about three quarters, then raise the gain until it is loud and clean, and stop there. The supply must stay between 9 V and 16 V while it plays.
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.