SPM 4 - Audio Amplifier AUDISON - Free user manual and instructions
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| Product Type | 4-Channel Car Audio Amplifier |
| Brand | Audison |
| Model | SPM 4 |
| Dimensions (W x H x L) | Approx. 200 x 50 x 350 mm |
| Weight | Approx. 2.5 kg |
| Power Supply | 12V DC (Negative Ground) |
| RMS Power Output (4 Ohms) | 4 x 50W |
| RMS Power Output (2 Ohms) | 4 x 75W |
| Bridged Power (4 Ohms) | 2 x 150W |
| Frequency Response | 10 Hz - 40 kHz (±1 dB) |
| Total Harmonic Distortion (THD) | < 0.05% |
| Signal-to-Noise Ratio | > 100 dB |
| Input Sensitivity | 0.2V - 8V |
| Crossover | Built-in high-pass/low-pass filters (variable) |
| Protection Circuits | Thermal, short circuit, overvoltage |
| Maintenance | Keep clean and dry; ensure proper ventilation |
| Safety | Install in secure location; disconnect battery before wiring |
| Spare Parts & Repairability | Contact authorized service center for replacements |
| General Information | High-efficiency Class AB design |
Frequently Asked Questions - SPM 4 AUDISON
What is the recommended power cable gauge for the Audison SPM 4?
For optimal performance, use a minimum 8 AWG power and ground cable. Ensure the cable is fused within 18 inches of the battery.
Can the SPM 4 amplifier be bridged?
Yes, the amplifier can be bridged on channels 1/2 and 3/4 to deliver up to 150W RMS per bridged channel at 4 ohms.
What is the input sensitivity range?
The input sensitivity is adjustable from 0.2V to 8V, allowing compatibility with various head units.
How do I set the crossover filters?
Use the built-in variable high-pass and low-pass filters. Set the crossover frequency based on your speakers: high-pass for tweeters, low-pass for subwoofers.
What are the protection features?
The amplifier includes thermal, short circuit, and overvoltage protection to prevent damage.
Can I use this amplifier with a factory radio?
Yes, if the factory radio has preamp outputs. If not, you may need a line output converter (LOC).
What is the recommended speaker impedance?
The amplifier is stable down to 2 ohms per channel in stereo mode and 4 ohms when bridged.
How do I wire the remote turn-on?
Connect the remote input terminal to a 12V source from the head unit's remote output or a switched accessory wire.
What is the frequency response?
The frequency response is 10 Hz to 40 kHz within ±1 dB, suitable for full-range audio.
Does the amplifier require a specific mounting orientation?
Mount the amplifier in a well-ventilated area, ideally with fins oriented horizontally for best heat dissipation.
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