About the Rockford Fosgate M2-750X5
M2 Series Element Ready™ amplifier
M2 Series Element Ready™ amplifier
Rockford Fosgate designed this M2 Series amplifier for marine environments, using a special "Element Ready" chassis and conformal-coated PC boards to protect against dust and water. The amp also features a UV stable powder-coated cast-aluminum heatsink and zinc nickel-plated marine-grade brass connection terminals to help prevent corrosion.
Give your system the power it deserves
The M2-750X5 five-channel amp can drive 4 speakers with 50 watts RMS each, while powering a subwoofer with up to 350 watts RMS. Just want powerful 2-channel stereo plus bass? You can bridge the amp to 3-channel mode to drive a pair of high-performance speakers with 200 watts RMS each, while still sending that 350 watts to a sub. You can use the high- and low-pass filters, a subsonic filter, and Rockford Fosgate's famous Punch boost to get maximum performance from your speakers and sub.
Setting it up for optimum performance
Rockford Fosgate's C.L.E.A.N. technology (Calibrated Level Eliminates Audible Noise) setup system ensures your music will sound as clean and powerful as possible. It's a simple system to use — turn it up until the light shows red, then turn it down until the red light goes out. Speaker-level inputs let you hook this amp up to almost any system, even a factory radio.
M2-750X5 connection panel
- 5-channel marine amplifier
- 50 watts RMS x 4 + 200 watts RMS x 1 at 4 ohms
- 100 watts RMS x 4 + 350 watts RMS x 1 at 2 ohms
- 200 watts RMS x 2 bridged at 4 ohms + 350 watts RMS x 1 at 2 ohms
- CTA-2006 compliant
- Class D amp technology
- marine features:
- Element Ready™ chassis and conformal-coated PC boards
- UV stable powder-coated cast-aluminum heatsink
- zinc nickel-plated marine-grade brass connection terminals
Front and rear channels:
- variable high- and low-pass filters (50-250 Hz, 12 dB/octave)
- variable low-pass filter (50-250 Hz, 12 dB/octave)
- variable bass boost (0-18 dB at 45 Hz)
- variable subsonic filter (15-40 Hz, 12 dB/octave)
- wired remote bass level control included
- C.L.E.A.N. gain setup system includes clip lights
- auto remote turn-on
- preamp and speaker-level inputs
- wiring and hardware not included with amplifier
- 4-gauge power and ground leads and a 120-amp fuse recommended
- dimensions: 11-1/4"W x 1-15/16"H x 6-13/16"D
- warranty: 2 years
- Our 60-day money-back guarantee
- MFR # M2-750X5
What's in the box:
- 5-Channel marine amplifier
- Remote Punch Level Control module
- 16.5' Remote Punch Level Control cable (RJ-25 connector on both ends)
- Three 7" Speaker input harnesses
- 3mm Hex key
- Four 3/4" Screws
- Two 1/2" Screws
- 5 Flat washers
- 1 Nut
- Installation and Operation instructions (English/ French/ Spanish/ German/ Italian)
- Certificate of Performance Verification
- Rockford Fosgate contact information
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More details on the Rockford Fosgate M2-750X5
Features & specs
|RMS Power Output (Watts x Channels)||50 x 4|
|Frequency Response at Rated RMS Power||20-20k Hz|
|THD at Rated RMS Power||1%|
|Signal to Noise Ratio||80 dB|
|Peak Power Output (Watts x Channels)||N/A|
|Power at 2 Ohms (Watts x Channels)||100 x 4|
|Bridged Power (Watts x Channels)||200 x 2|
|Minimum Impedance Bridged||4|
|Minimum Impedance Unbridged||2|
|Low-Pass Crossover Frequency||50-250 Hz|
|Low-Pass Slope (dB/octave)||12 dB/octave|
|High-Pass Crossover Frequency||50-250 Hz|
|High-Pass Slope (dB/octave)||12 dB/octave|
|Bass Boost||0-18 dB|
|Bass Boost Frequency||45 Hz|
|Speaker Level Inputs||Yes|
|Parts Warranty||2 Years|
|Labor Warranty||2 Years|
Overview: The Rockford Fosgate Prime M2-750X5 is a 5-channel full-range Class D amplifier. It's effectively two full range 2-channel amps and a mono subwoofer amp built into one chassis, labeled Front, Rear, and Sub. The front and rear sections of the amp are bridgeable, so it can be wired as 5-channel, 4-channel, or 3-channel.
CEA-2006 Compliant: CEA-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. CEA-2006 standards allow consumers to compare amplifiers and receivers under the same conditions (apples to apples).
- Power Output:
- Full Range Channels: 50 watts RMS x 4 into 4Ω
- Subwoofer Channel: 200 watts RMS x 1 into 4Ω
- Signal to Noise Ratio:
- Full Range Channels: >80 dBA (measured at 1 watt into 4Ω)
- Subwoofer Channel: >75 dBA (measured at 1 watt into 4Ω)
- Power Output:
- Full Range Channels:
- 2Ω: 100 watts RMS x 4
- Bridged (4Ω): 200 watts RMS x 2
- Subwoofer Channel:
- 2Ω: 350 watts RMS x 1
- Full Range Channels:
Mounting: The amplifier can be mounted vertically, horizontally, or inverted using the supplied mounting screws; horizontal mounting (right side up) will provide the best cooling.
Cast Aluminum Heatsink: The cast aluminum heatsink dissipates heat generated by the amplifier's circuitry. Casting improves cooling efficiency approximately 30% over conventional extruded heatsink designs.
Marine Amplifier: The M2-750X5 is designed for the harsh marine environment. The amplifier features a conformal-coated PCB and UV-resistant finish.
LED Indicator: The amplifier has a top-mounted LED indicator that lights blue when the unit is turned on. The LED lights red when a protection circuit engages (thermal, short circuit, etc.). The amplifier automatically mutes if this occurs.
MEHSA (Maximum Efficiency Heat Sink Application-4th Generation): MEHSA is a Rockford Fosgate proprietary process that increases the heat transfer from the MOSFET devices to the heatsink. The multi-layer insulated metal MEHSA substrate operates with minimal thermal resistance, spreading heat both downward and outward to quickly dissipate heat from each device across the heatsink. This allows greater power output, enhanced thermal stability, and maximum reliability.
NOMAD (NOn-Multiplying Advanced Decision): NOMAD is an intelligent protection circuit that uses an analog computer to make real time decisions regarding temperature, voltage, current and impedance. The amplifier is protected without limiting sound output unless needed.
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 it's 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.
Balanced Differential Inputs: Differential inputs eliminate noise picked up by signal cables by measuring the voltage of both the (+) and (-) input signal, then subtracting the voltage common to both conductors (noise), resulting in only the clean signal entering the amplifier.
Input Switch: Set this switch to match the number of inputs used, 2-channel, 4-channel, or 5-channel. In 2-channel mode the signal on the front input feeds all five output channels.
Independent Controls: The M2-750X5 has independent, top-mounted controls for the front, rear, and sub channels:
- Gain: rotary gain controls; labeled 0 to 11 (equivalent to 150mV-4V line level or 450mV-12V speaker level)
- Crossover: 3-position switch; choose low-pass, all-pass, or high-pass; there are switches for the Front and Rear channels only, the low-pass crossover on the sub channel is always engaged (it cannot be bypassed); low-pass and high-pass crossovers are 12 dB per octave Butterworth
- Frequency: rotary dials; continuously variable from 50-250 Hz
Infra-Sonic: The variable infrasonic filter (15-40 Hz, 12 dB/octave slope) on the subwoofer channel is designed to prevent frequencies below the capability of the subwoofer from being amplified. This helps reduce distortion, and is particularly useful when powering subs in ported enclosures.
Punch EQ: The Punch EQ bass boost circuit on the subwoofer channel is adjustable from 0 (min) to +18 dB (max) and centered at 45 Hz.
Remote Level Control: A wired Remote Level Control (RLC) is included, allowing you to remotely control the output level of the amplifier. The remote has a rotary dial, and comes with mounting hardware and a 16½' cable.
- Width: 1.2" (2" including the mounting flanges)
- Height: 0.92"
- Depth: 1.57" (2.375" including knob and wiring)
Auto Turn-on Switch: When using speaker level inputs, this switch can be set to On and the amp will turn on when it senses an input signal (DC offset on the left front input). When using the RCA inputs a remote turn-on wire must be connected.
Power Terminals: The power and ground terminals are nickel-plated set-screw terminals, and will accommodate up to 4-gauge wire. The set screws are tightened/loosened with the included 3mm hex key.
Fuses: The amplifier does not have on-board fuses. A 120-amp fuse should be placed on the power wire within 18" of the battery.
Remote Turn-On Terminal: The remote turn-on terminal is a nickel-plated set-screw terminal that will accommodate up to 8-gauge wire. The set screw is tightened/loosened with the included 3mm hex key.
Speaker Terminals: The speaker terminals are nickel-plated set-screw terminals that will accommodate up to 8-gauge wire. The set screws are tightened/loosened with the included 3mm hex key.
RLC: The RJ-25 jack is for connecting the included wired remote control.
RCA Input Jacks: There are three pair of RCA input jacks for the front, rear, and subwoofer channels. The balanced differential inputs are nickel-plated to resist signal degradation caused by corrosion.
Speaker Level Inputs: There are ports for the three included speaker input harnesses, front, rear, and sub. If speaker level inputs are used, nothing should be connected to the RCA jacks.