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Product Info
Product Info
The Alpine Amplifier 4 Channel S2-A36F is a Hi-Res Audio certified car amplifier delivering 60W RMS per channel at 4 ohms. At 2 ohms it steps up to 90W RMS per channel, and its Class-D design reproduces a frequency response up to 40kHz for clear, detailed sound to front and rear speakers. For a 3-channel 2-way system, the rear channels can be bridged to deliver up to 180W RMS to a subwoofer.
A variable mid-bass EQ on the rear channels lets you dial in extra low-frequency punch, while high and low-pass filters control the frequency range reaching each speaker and subwoofer. The optional RUX-KNOB2 wired remote adjusts rear channel levels from the driver's seat.
The amplifier accepts both preamp and speaker-level inputs, making it compatible with factory or aftermarket head units, and automatic turn-on detection removes the need for a separate turn-on wire. Side panel controls keep gain and crossover adjustments accessible even when the amplifier is mounted under a seat or in a shallow space.
Features
- Delivers 60W RMS per channel at 4 Ohms or 90W RMS per channel at 2 Ohms
- Hi-Res Audio certified with frequency response up to 40kHz
- Bridges rear channels for up to 180W RMS to power a subwoofer
- Variable mid-bass EQ dials in extra low-frequency impact on rear channels
- High and low-pass filters tune the frequency range sent to speakers and subs
- Accepts preamp and speaker-level inputs for factory or aftermarket installs
- Automatic turn-on detection removes the need for a separate remote wire
- Side panel controls keep gain and crossover adjustments accessible in tight mounting spaces
Tech Spec
| RMS Power Output (per channel) | 60W @ 4 Ohms / 90W @ 2 Ohms |
|---|---|
| Number of Channels | 4 (3/2 channel configurable via bridging) |
| Class (A/B, D, etc.) | Class-D |
| Impedance Range (ohms) | 2–4 Ohms |
| Frequency Response | 10Hz–40kHz |
| Crossover (High/Low Pass) | Variable HPF/LPF: 50-400Hz (-12dB/oct) |
| Input Type (RCA / High-Level) | RCA preamp input and speaker-level (high-level) input with automatic power on |
| Operating Voltage | 14.4V DC (9-16V allowable) |
| Dimensions (L x W x H) | Heat Sink (W x H x D): 220 x 57 x 210mm |
| Weight | 2.2kg |
| Cable Size | Power Cable AWG 4, Speaker Cable AWG 8 |