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Ruthless Audio 12500.1 Red 12,500 Watt Monoblock Amplifier

Sale price $1,799.99 Regular price $1,899.99
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Key features

  • Amplifier channels: 1
  • RMS output at 4 ohms: 4000.0 W
  • RMS output at 2 ohms: 7500 W
  • RMS output at 1 ohm: 12500 W

Add Additional Year Of Warranty Coverage?

Description

Product Overview

Build a high-output subwoofer system around the Ruthless Audio 12500.1 Red monoblock amplifier, rated for up to 12,500W RMS at 1Ω and 14.4V. Its 10Hz–250Hz frequency response and 0°–180° phase control give you range to tune your low-frequency system.

Key Features & Benefits

  • Three power ratings: Choose between 12,500W RMS at 1Ω, 7,500W at 2Ω, or 4,000W at 4Ω, all at 14.4V.
  • Locking RCA inputs: Tiffany-style connectors provide a locking connection for your audio signal.
  • 1/0 AWG power terminals: The full-size terminals accommodate the specified power cable gauge.
  • Flexible signal matching: Input sensitivity from 0.2V to 6V supports system-level matching with a head unit or DSP.
  • Low-frequency tuning: The 10Hz–250Hz frequency response and 0°–180° phase control support subwoofer integration.
  • High-speed MOSFET design: The amplifier’s stated switching design and thermal management are intended for sustained high-output operation.

Technical Specifications

Specification Value
RMS Power @ 1Ω (14.4V) 12,500W
RMS Power @ 2Ω (14.4V) 7,500W
RMS Power @ 4Ω (14.4V) 4,000W
Channels 1 (Monoblock)
Frequency Response 10Hz – 250Hz
Phase Control 0° – 180°
THD < 0.01% @ 4Ω
Input Sensitivity 0.2V – 6V
RCA Inputs Tiffany-Style Locking RCA
Power Input Gauge 1/0 AWG
Warranty 1 Year Standard / 2 Year Extended Available

Why Choose This Product?

The 12500.1 Red is designed for competition-level and other high-output subwoofer builds. Its stated power ratings at three impedance loads give you options when planning a system, while the internal bus bars and military-grade power supply are designed to support its high-current output.

Its rated output calls for careful system planning. Pairing guidance in the product details recommends high-excursion competition subwoofers rated for 4,000W RMS or more.

Installation & Compatibility Notes

  • Electrical system: The installation recommendations call for a high-output alternator rated at 300A or more, a Big 3 wiring upgrade using 1/0 AWG, and substantial AGM or lithium battery reserve.
  • Power and ground: Run dedicated 1/0 AWG power and ground wiring directly from the battery, as specified in the installation guidance.
  • Subwoofer loads: The supplied guidance describes wiring dual 2-ohm subs in parallel for a 1-ohm load, or dual 4-ohm subs in parallel for a 2-ohm load.
  • Signal tuning: Use a DSP or active crossover upstream to set low-pass and subsonic filters, as recommended in the product details.

Frequently Asked Questions

What power does the 12500.1 Red deliver at each load?

At 14.4V, it is rated for 12,500W RMS at 1Ω, 7,500W RMS at 2Ω, and 4,000W RMS at 4Ω.

What electrical upgrades are recommended for full-power operation?

The installation guidance calls for a 300A-or-higher alternator, a 1/0 AWG Big 3 wiring upgrade, and substantial AGM or lithium battery reserve.

What subwoofers does the product information recommend?

It recommends high-excursion competition subwoofers rated for 4,000W RMS or more. Check the final system impedance and power requirements when selecting drivers.

What warranty options are listed?

The specifications list a one-year standard warranty and a two-year extended option. The product details describe the standard warranty as covering one year of manufacturer defect coverage, with the extended option adding one year.

Explore More

Shop the Ruthless Audio 12500.1 Red at 12 Volt Outlet. Explore the Ruthless Audio brand profile.