About the Rockford Fosgate TM400X4AD
Ready to rock your boat
Ready to rock your boat
Rockford Fosgate designed their Power Series TM400X4ad 4-channel amplifier for marine and powersports applications. You can power systems with front and rear speakers, drive a pair of subs, or switch the amp to 3-channel mode to power a system with a set of speakers and a subwoofer.
Rockford Fosgate's proprietary Class AD technology allows this compact amp to draw big power with less current draw from your electrical system, while the Constant Power feature keeps power consistent with varying impedances. High- and low-pass filters tailor the amp to the job at hand, whether it's powering a nice set of component speakers or a couple of marine subs. This amp will provide outstanding power and versatility in a variety of vehicles on land and sea.
Made to handle moisture and heat
It's built to stand up to outdoor life, too, with conformal-coated circuitry that withstands moisture and dirt and stainless steel hardware that won't succumb to corrosion. With a 3-stage thermal lock extrusion, dual- fan forced induction system, and real-time thermal monitoring, the TM400X4AD can rock hard without overheating – even when it's tucked into a tight space.
Level setting made easy
The TM400X4ad uses Rockford Fosgate's CLEAN level setting technology, so there's no more guesswork while setting your gain levels. Easy-to-see LED indicators identify clipping so you can set your amp up for maximum performance while eliminating distortion.
Product highlights:
- 4-channel marine/powersports amplifier
- 100 watts RMS x 4 at 4 ohms (400 watts peak)
- 100 watts RMS x 4 at 2 ohms
- 200 watts RMS x 2 at 4 ohms (bridged)
- CEA-2006 compliant
Features:
- Class AD amp technology
- 4-ohm/2-ohm multi-impedance constant power
- conformal-coated circuit board — suitable for power sports and marine applications
- marine-grade stainless steel hardware
- twin cooling fans and real-time thermal sensing
- hidden top-mount control panel
- CLEAN set-up technology with LED input/output indicators
- speaker-level inputs (speaker wire to RCA adapter required)
Specs:
- variable low- and high-pass filters (50-250 Hz at 12 dB/octave)
- tone controls: 0-18 dB at 45 Hz; 0-14 dB at 12,000 Hz
- frequency response: 20-20,000 Hz
- fuse rating: 60A x 1 (fuse not included)
- dimensions: 8-5/8"D x 1-11/16"H x 4-5/16"W
- requires 8-gauge power and ground cable
- warranty: 2 years
- Our 60-day money-back guarantee
- MFR # TM400X4AD
What's in the box:
Rockford Fosgate TM400X4AD owner's manual
- 4-Channel moto-marine amplifier
- Power/ground/turn-on plug (installed)
- Two 8" Speaker output harnesses (bare wire to 4-pin Molex)
- Two 14" Input harnesses (2 RCA to 4-pin Molex)
- Amplifier Quick Setup
- Certificate of Performance Verification
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More details on the Rockford Fosgate TM400X4AD
Features & specs
| Performance | ||
|---|---|---|
| RMS Power Output (Watts x Channels) | 100 x 4 | |
| Frequency Response at Rated RMS Power | 20-20k Hz | |
| THD at Rated RMS Power | 1% | |
| Signal to Noise Ratio | N/A | |
| Input Voltage | 14.4v | |
| Peak Power Output (Watts x Channels) | 128 x 1 | |
| Power at 2 Ohms (Watts x Channels) | 100 x 2 | |
| Bridged Power (Watts x Channels) | 200 x 1 | |
| Minimum Impedance Bridged | 4 | |
| Minimum Impedance Unbridged | 2 | |
| Features | ||
| Amplifier Class | A/D | |
| Low-Pass Crossover Frequency | 50-250 Hz | |
| Low-Pass Slope (dB/octave) | 12 dB/oct | |
| High-Pass Crossover Frequency | 50-250 Hz | |
| High-Pass Slope (dB/octave) | 12 dB/oct | |
| Bass Boost | 0-18 dB | |
| Bass Boost Frequency | 45 Hz | |
| Fan Cooled | Yes | |
| Fuse Rating | 60 | |
| Speaker Level Inputs | Yes | |
| Preamp Outputs | No | |
| Height (inches) | 1-11/16 | |
| Width (inches) | 4-5/16 | |
| Depth (inches) | 8-5/8 | |
| Parts Warranty | 2 Years | |
| Labor Warranty | 2 Years | |
Product Research
Features
Overview: The Rockford Fosgate TM400X4ad is a 4-channel Power Series "moto-marine" amplifier with a rated power output of 100 watts per channel at 4-ohms or 2-ohms. This Element Ready amplifier can be used on motorcycles, ATVs, or boats, and can withstand harsh environmental conditions.
CEA-2006 Compliant: CEA-2006 is a system of testing and measurement methods for mobile audio amplifiers. This voluntary standard advocates a uniform method for determining an amplifier's RMS power output and signal-to-noise ratio. The criteria for measuring power uses a DC input voltage of 14.4 volts and the RMS power output is measured into a 4Ω load with 1% or less Total Harmonic Distortion plus noise (THD+N). CEA-2006 allows consumers to compare amplifiers and receivers under identical conditions. The CEA-2006-rated RMS power output is 100 watts RMS x 4 channels. Additionally the power output is 100 watts RMS x 4 channels into 2Ω and 200 watts RMS x 2 channels bridged (into 4Ω).
Element Ready: Rockford Fosgate's Element Ready Amplifiers are protected against dust, UV rays, and corrosion. Marine-grade, two-part epoxy-coated circuit boards are used to prevent corrosion due to exposure in moist and humid places. In addition, stainless hardware is used to help prevent rust and corrosion of all electrical connections.
Class-AD: The TM400X4ad features Rockford Fosgate's proprietary Class-AD technology, which allows the amplifier to produce more power with less current draw from the vehicle's charging system.
3-Stage Airflow: The amp's 3-stage airflow method efficiently rids the chassis of heat to keep the amplifier running cool. Dual fan forced induction pulls in fresh air. The air flows over the MOSFET transistors to cool them down, and out through the exhaust channel. The top and bottom heat sinks are decoupled, which allows the top to remain cool to the touch. At least 2-3 inches clearance should be provided around the fan intake and the exhaust vents to optimize air flow.
DSM (Discrete Surface Mount): High speed robotics are used in the manufacturing process to place 1% tolerance parts and large board traces. DSM improves the efficiency of the circuit, decreases cross-talk from other discrete components and lowers operating temperature.
CLEAN Set-Up: Rockford's integrated level setting technology, CLEAN (Calibrated Level Eliminates Audible Noise), replaces sophisticated test equipment with input/output clip LEDs, allowing you to match the source unit's output to the amp's gain, and optimize the amp's output. The input clip indicator works in conjunction with the audio source volume, illuminating red when the source reaches its clipping point. The output clip indicator works in conjunction with the input level dial on the amp, illuminating the appropriate color depending on the audio content used for the setup.
Controls
Input Level: The amplifier has dual input level controls for the front and rear channels, conveniently accessible from the top. To accommodate the varying range of signal levels from today's factory and aftermarket radios, the input levels are adjustable from 150mV to 12V. A small flat-head screwdriver (not supplied) is needed to adjust the levels.
Input Switch: With the input switch in the 2-channel position, connecting only the front inputs will send the signal to both the front and rear sections of the amplifier. In the 4-channel position, both front and rear inputs must be used.
Crossover: The amplifier has dual built-in Butterworth crossovers for the front and rear channels, variable from 50 Hz to 250 Hz with a slope of 12dB/octave. They can be independently set to high-pass, all-pass (full range), or low-pass operation. The rotary frequency settings can be adjusted with a small screwdriver.
Punch EQ: The amplifier has dual Punch EQ functions that change with the crossover switches. When the crossover is set to low-pass, the Punch EQ acts as a variable bass boost; 0 to +18 dB at 45 Hz. When the crossover is set to high-pass, the Punch EQ acts as a variable treble boost, 0 to +14 dB at 12.5 kHz. When the crossover is set to all-pass, both the bass and treble boost circuits are active.
Connections
Power Connections: The TM400X4ad's power, ground, and remote turn-on terminals are located on a single, removable plug. This allows you to quickly and easily connect or disconnect the amplifier. Each individual terminal on the plug is a captive c-clamp connector which will accommodate up to 8-gauge wire. A Phillips- or flat-head screwdriver (not supplied) is required to tighten/loosen the terminals.
Fuse: The amplifier does not have an on-board fuse. A 60-amp fuse should be placed on the power wire within 18" of the battery.
Speaker Connections: The amplifier is equipped with two speaker output harnesses, which connects to the amplifier via 4-pin plugs. The speaker wires should be spliced to the 16-gauge bare wires on the 8" pigtails. To bridge the amplifier, you should use the left front and rear positive and right front and rear negative terminals. The amplifier can also operate in 3-channel mode with the front channels wired in stereo and the rear channels bridged to mono.
Signal Input: The amplifier's Differential Inputs will accept either a line-level or speaker-level input on the Molex-style connector. The included input harnesses each have a 4-pin Molex plug and dual RCAs. Front and rear line-level signals can simply be connected via RCA cables from the source unit to the input harness. For a speaker-level signal, you can cut the RCA connectors from the input harness and splice the wires to the speaker wires of the source unit. When using a speaker-level input signal, the auto turn-on feature is active and the remote turn-on terminal becomes a 12 volt output, which can be used to turn on/off an additional amplifier or other component.
Optional Custom Mounting Kit: The optional RFKHD9813 amplifier installation kit is designed for custom-mounting the TM400X4ad to compatible Harley-Davidson motorcycles. The kit includes a mounting plate, heatsink, and wiring kit. You may qualify for a One-Year Extended Warranty when you install the TM400X4ad with a matching Rockford Fosgate Amplifier Installation Kit.
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Customer Q&A
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Installed this on my 2015 Harley Davidson Electra Glide Ultra Classic and what a difference it has made. I also installed Focal speakers and tossed the hog tunes speakers in the trash! When I pump up the volume, you can hear the music two blocks away. I am a happy camper.
Paul from Florida