Big bass power Alpine's Next Generation S-Series S2-A60M mono subwoofer amplifier makes it a lot easier to get great bass in your ride, delivering up to 600 watts RMS power to your sub. A variable bass boost allows you to dial in some extra kick and impact for more low-frequency enjoyment. You can even add an optional wired remote to control the level of bass from your front seat. More convenient features A low-pass filter puts you in command of the frequency spectrum that reaches your sub. The amp includes preamp- and speaker-level inputs, so you can install it in almost any vehicle, even one with a factory radio. When using the speaker-level inputs, the amp can sense the incoming signal and turn itself on, eliminating the need to run a separate turn-on wire to the receiver or fuse box. Product highlights: Featured in our article: Best subwoofer amplifiers for 2025 mono subwoofer amplifier 330 watts RMS x 1 at 4 ohms 600 watts RMS x 1 at 2 ohms 600 watts RMS x 1 at 1 ohm variable low-pass filter (50-400 Hz, 24 dB/octave) variable bass boost (0-12 dB at 50 Hz) optional wired remote available More info: preamp and speaker-level inputs speaker-level inputs handle up to 10V RCA adapters required for speaker-level input signal-sensing turn-on with speaker-level inputs preamp outputs wiring and hardware not included with amplifier 4-gauge power and ground leads recommended fuse rating: 30A x 2 8.66"W x 2.21"H x 8.3"D warranty: 1 year MFR # S2-A60M Item # 500S2A60M California customers: Please click here for your Proposition 65 WARNING. What's in the box: If you need assistance accessing this owner's manual, please give us a call. Mono subwoofer amplifier (two 30A ATO fuses installed) 2 End caps Four 3/4" screws Four 1/4" screws 2mm Allen key Owner's manual (En/ Sp/ Fr/ Others) Alpine Verification Certificate Warranty information Power supply note On-line product registration information Features & specs Performance RMS Power Output (Watts x Channels) 330 x 1 Peak Power Output (Watts x Channels) --- Power at 2 Ohms (Watts x Channels) 600 x 1 Power at 1 Ohm (Watts x Channels) 600 x 1 Bridged Power (Watts x Channels) --- Minimum Impedance Bridged --- Minimum Impedance Unbridged 1 Best Frequency Response 10-400Hz Hz THD at Rated RMS Power 1% Signal to Noise Ratio 85 dB Input Voltage 14.4v Features Amplifier Class D Built-in DSP No Remote Control Optional Low-Pass Crossover Frequency 50-400 Hz Low-Pass Slope (dB/octave) 24 dB/octave High-Pass Crossover Frequency N/A High-Pass Slope (dB/octave) N/A Bass Boost 0-12 dB Bass Boost Frequency 50 Hz Fan Cooled No Fuse Rating 60 Speaker Level Inputs Yes Preamp Outputs 2 Width (inches) 8-11/16 Height (inches) 2-1/4 Depth (inches) 8-5/16 Parts Warranty 1 Year Labor Warranty 1 Year The Alpine S2-A60M replaces these items: Alpine S-A60M Features: Features CTA-2006 Compliant: CTA-2006 is a system of testing and measurement for mobile audio amplifiers. This voluntary standard advocates a uniform method for measuring an amplifier's RMS power output and signal-to-noise ratio. The criteria for measuring amplifier power uses a DC input voltage of 14.4 volts and the RMS power output is measured over a frequency range of 20 Hz to 20 kHz (for full range amplifiers), with 1% or less Total Harmonic Distortion plus noise (THD+N). Signal-to-Noise ratio is measured in weighted absolute decibels (dBA) at a reference of 1 watt into 4 ohms. CTA-2006 standards allow consumers to compare car amplifiers and receivers under the same conditions (apples to apples). CTA-2006 Specifications: Power Output: 330 watts RMS x 1 into 4Ω Signal to Noise Ratio: 85 dBA (measured at 1 watt into 4Ω) Other Specifications: Power Output (2Ω): 600 watts RMS x 1 @14.4 volts Power Output (1Ω): 600 watts RMS x 1 @14.4 volts Signal to Noise Ratio: 105 dB (at rated power output, 4Ω) Controls Gain Control: Use the rotary gain control to match the input signal voltage. The amp will accept line level signals from 0.2 volts to 4.0 volts or speaker level signals from 0.5 volts to 10 volts. Turn-On Type/Input Level: A 3-way switch lets you select both the amp activation method and the input signal type. Choices include: DC/HI: Used when running speaker-level inputs and using DC offset to trigger the amp. REM/HI: Used when running speaker-level inputs, but using a +12V trigger wire (REM) to activate the amp. REM/LO: Used when running RCA pre-amp signals into the amp and connecting a +12V trigger wire (REM) to activate the amp. Crossover: The low pass crossover is always engaged (it cannot be bypassed). The crossover point is adjustable from 50 Hz to 400 Hz and the slope is 24 dB/octave. Bass EQ: The amplifier has a variable Bass EQ circuit (Bass Boost) that raises the level of the amplifier output at 50 Hz from 0 dB to +12 dB. Optional Remote Control: The amplifier has an RJ-25 jack for adding the optional RUX-KNOB.2 wired remote bass level control. The remote has a 20 dB adjustment range (-20 dB to 0 dB relative to the gain setting). Connections Power/Ground: Two set-screw terminals connect the power and ground cables. The terminals accept up to 4-gauge wire (a 4-gauge wiring kit is recommended - sold separately). The set screws are tightened/loosened with the included 2mm Allen wrench. Remote Turn-on: The remote turn-on set screw terminal will accept up to 8-gauge wire. The set screw is tightened/loosened with the included 2.5mm Allen wrench. Speaker Outputs: The one pair of set-screw terminals will accept up to 8-gauge wire. The set screws are tightened/loosened with the included 2mm Allen wrench. Signal Input: The stereo RCA jacks connect to line level or speaker level input signals. If connecting the source unit's speaker wire to the input jacks, use a Speaker-to-RCA adapter or splice speaker wire to an RCA plug. Pre-Outs: Two RCA output jacks can be used to pass the input signals back out to additional amplifiers. The output signals are unaffected by the amplifier's settings. Fuses: Two 30-amp ATO fuses protect the amplifier. Another fuse (60-amp minimum) should be placed on the +12V power wire within 18" of the battery.
