1. Bubuka
This manual provides comprehensive instructions for the Alpine S2-A120M S-Series Class-D Mono Subwoofer Amplifier and the Alpine RUX-KNOB.2 Remote Bass Knob. It covers essential information regarding product features, proper setup, operational guidelines, maintenance procedures, troubleshooting common issues, and detailed technical specifications. Please read this manual thoroughly before installation and operation to ensure correct usage and optimal performance.
2. Produk Langkungview
2.1. Fitur konci
- S2-A120M Amppanguat: Class-D Mono Subwoofer Amplifier with 1200W RMS power output at 1 or 2 Ohms.
- Features Alpine's Class D Amplifier Circuitry.
- Designed with a two-sided terminal layout for efficient wiring.
- Includes built-in selectable and adjustable crossovers.
- Compatible with optional remote bass knobs (RUX-KNOB.2 or RUX-H01).
- RUX-KNOB.2 Remote Bass Knob: Allows for convenient adjustment of amplifier bass gain from within the vehicle cabin.
- Ngarojong sababaraha amplifier control with telephone cord adapters.
2.2. komponén
The product bundle includes the Alpine S2-A120M Mono Subwoofer Amplifier and the Alpine RUX-KNOB.2 Remote Bass Knob.

Gambar 1: Alpine S2-A120M S-Series Mono Subwoofer Amplifier and RUX-KNOB.2 Remote Bass Knob. This image displays the amplifier unit and the separate remote bass knob.

Gambar 2: Puncak view of the Alpine S2-A120M Amplifier. The top panel features the Alpine logo and a central indicator light.

Gambar 3: Pahareup-hareup view of the Alpine RUX-KNOB.2 Remote Bass Knob. This image highlights the control knob and its mounting bracket.
3. Setup jeung Instalasi
Pamasangan anu leres penting pisan pikeun pagelaran sareng umur panjang anjeun amppangangkat. Disarankeun yén pamasangan dilaksanakeun ku profésional anu mumpuni.
3.1. Amppanempatan liifier
- Choose a location that is dry, well-ventilated, and protected from direct sunlight or excessive heat.
- Mastikeun spasi nyukupan sabudeureun éta ampLifier pikeun dissipation panas ditangtoskeun.
- Gunung nu ampLifier aman pikeun nyegah gerakan nalika operasi kendaraan.
3.2. Sambungan Wiring
The S2-A120M amplifier features a two-sided terminal layout for organized wiring.

Gambar 4: Rear panel connections of the Alpine S2-A120M Amppangagung. Ieu view shows the power supply terminals (BATT, REM, GND) and speaker output terminals (SPK OUT).
- Sambungan Daya: Connect the main power cable from the vehicle battery to the BATT terminal. Ensure an appropriate fuse is installed close to the battery.
- Sambungan taneuh: Sambungkeun kabel ground anu pondok sareng kandel tina GND terminal to a clean, unpainted metal surface on the vehicle chassis.
- Ngahurungkeun Jauh: Connect a remote turn-on wire from your head unit to the REM terminal. This wire signals the amplifier pikeun ngaktipkeun sareng mareuman sistem audio anjeun.
- Input Audio: Sambungkeun kabel RCA tina kaluaran subwoofer head unit anjeun ka amplifier's input jacks (not explicitly shown in the provided image, but standard for amppangangkat).
- Kaluaran Speaker: Sambungkeun subwoofer anjeun ka SPK OUT terminals. Observe correct polarity (+ to + and - to -).
3.3. RUX-KNOB.2 Installation
The RUX-KNOB.2 remote bass knob connects to the amplifier via a telephone cord adapter. Install the knob in a convenient location within the vehicle cabin for easy access.
- Mount the RUX-KNOB.2 using the provided bracket and screws.
- Connect the telephone cord from the RUX-KNOB.2 to the designated remote bass knob port on the S2-A120M amppangagung.
4. Parentah Operasi
4.1. Mimiti Power-Up
- After all connections are made, turn on your vehicle's ignition and audio system.
- The ampIndikator daya liifier kedahna hurung.
4.2. Gain adjustment
The gain control on the amplifier matches the output voltage tina unit sirah anjeun ka amplifier's input. Set the gain carefully to avoid distortion.
- Mimitian ku amplifier gain set to minimum.
- Play a familiar music track with strong bass content.
- Slowly increase the head unit volume until it reaches about 75-80% of its maximum.
- Saeutik demi saeutik ningkatkeun amplifier gain until you hear slight distortion, then back off slightly.
4.3. Setélan Crossover
The S2-A120M features built-in selectable and adjustable crossovers to filter frequencies sent to your subwoofer.
- Adjust the low-pass filter (LPF) to send only low frequencies to the subwoofer. A common starting point is 80-100 Hz.
- Refer to your subwoofer's specifications for recommended crossover points.
4.4. Using the RUX-KNOB.2 Remote Bass Knob
The RUX-KNOB.2 allows for real-time adjustment of the subwoofer's bass level from the driver's seat.
- Rotate the knob clockwise to increase bass output.
- Rotate the knob counter-clockwise to decrease bass output.
- This knob provides fine-tuning of the bass level without needing to access the amplirén langsung.
5. Pangropéa
Regular maintenance helps ensure the longevity and optimal performance of your Alpine amplifier and bass knob.
- beberesih: Ngusap périodik amplifier and bass knob with a soft, dry cloth to remove dust and debris. Avoid using harsh chemicals or abrasive cleaners.
- Pariksa sambungan: Annually, inspect all wiring connections (power, ground, remote, RCA, speaker) to ensure they are secure and free from corrosion. Loose connections can lead to performance issues or damage.
- Ventilasi: Pastikeun yén ampSirip-sirip pendingin lifier henteu kahalangan pikeun ngamungkinkeun pembuangan panas anu leres.
6. Cara ngungkulan
If you encounter issues with your Alpine amplifier, refer to the following troubleshooting guide before seeking professional assistance.
| Masalah | Mungkin Cukang lantaranana | Solusi |
|---|---|---|
| Teu aya kakuatan / Amplifier Henteu Hurungkeun |
|
|
| Taya Kaluaran Sora |
|
|
| Sora Distort |
|
|
| RUX-KNOB.2 Not Functioning |
|
|
7. Spésifikasi
7.1. Alpine S2-A120M Amppangagung
- Power Output (14.4V, <0.1% THD+N):
- 600W x 1 @ 4Ω
- 1200W x 1 @ 2Ω
- 1200W x 1 @ 1Ω
- Rasio Sinyal-ka-Noise (Rasio S/N): > 85dB
- Tanggapan Frékuénsi: 20Hz - 400Hz
- DampFaktor anu: >750
- Ukuran (L x W x H): 13.1" x 2.25" x 8.25" (33.27 cm x 5.72 cm x 20.96 cm)
- beurat: Approximately 8 lbs, 11 oz (3.94 kg)
7.2. Alpine RUX-KNOB.2 Remote Bass Knob
- fungsi: Remote bass gain adjustment for compatible Alpine amplifsters.
- Kasaluyuan: Designed for use with S2-A120M and other compatible Alpine amplifiers (e.g., MRX-M50, MRX-M100, MRX-V60, PDX-M12, PDX-M6).
- Sambungan: Via telephone cord adapter.
8. Garansi jeung Rojongan
For warranty information and technical support, please refer to the official Alpine website or contact Alpine customer service directly. Keep your purchase receipt as proof of purchase for warranty claims.
Alpine Customer Support: Visit Alpine's Support Page





