Rockford Fosgate M2-750X5 M2 750 Watt 5-Channel Element Ready™ Amplifier
Rockford Fosgate M2-750X5 M2 Series 750 Watt 5-Channel Full-Range Class-D Element Ready Marine Amplifier
A marine grade 750W 5-channel Full-Range Class-D amplifier delivering 100W x 4 plus 350W x 1 at 2-ohm (CTA-2006 rated). Features independent front, rear, and subwoofer channel crossover control, Continuously Variable Punch EQ, variable infrasonic filter, C.L.E.A.N. gain calibration, Rollback Protection, NOMAD speaker protection, RLC remote level control, Auto-Sense turn-on, RCA pass-free conformal coated circuit board, and 2/4/5 channel input selection. Backed by a 2 year warranty.
Product Overview
The Rockford Fosgate M2-750X5 is a 750W 5-channel Full-Range Class-D marine amplifier from the M2 Element Ready series, providing a complete single-amplifier solution for powering both marine speakers and a subwoofer from the one unit. Rated continuous power is 50W x 4 plus 200W x 1 at 4-ohm, or 100W x 4 plus 350W x 1 at 2-ohm (CTA-2006, less than 1.0% THD+N). Dynamic power via PowerCube reaches 114W x 4 plus 426W x 1 at 2-ohm, and 234W x 2 bridged at 4-ohm on the full-range channels.
The M2-750X5 provides fully independent crossover control for the front, rear, and subwoofer channels, each with their own high-pass and low-pass crossover adjustments at 12dB/octave Butterworth (50Hz-250Hz) plus a variable infrasonic filter on the subwoofer channel (15Hz-40Hz). A 2/4/5 channel input selection switch enables flexible integration with source units providing different numbers of RCA outputs. Three dedicated sets of RCA and high-level inputs cover front, rear, and subwoofer channels separately. C.L.E.A.N. (Calibrated Level Eliminates Audible Noise) provides independent input and output clip indicators for each channel group. A Continuously Variable onboard Punch EQ delivers up to 18dB of bass boost at 45Hz for the subwoofer channel.
The circuit board is conformal coated against dust and water, and the UV stable powder coated cast aluminium heatsink provides environmental protection. Zinc nickel-plated marine grade brass connection terminals resist corrosion. Auto-Sense turn-on removes the need for a dedicated remote wire, with a RAP bypass switch available. An RLC remote level control is included for in-cabin subwoofer volume adjustment. Rollback Protection and NOMAD speaker protection are active throughout. RATS tested and optimised using AudioGraph PowerCube.
Features & Benefits
Complete 5-Channel Marine System in One Amplifier: The M2-750X5 powers front speakers, rear speakers, and a subwoofer from a single unit, making it a space-efficient solution for full marine audio builds without the need for two separate amplifiers.
Independent Crossover Control for Each Channel Group: Front, rear, and subwoofer channel groups each have independent high-pass and low-pass crossover controls at 12dB/octave Butterworth (50Hz-250Hz), plus the subwoofer channel adds a variable infrasonic filter (15Hz-40Hz). This level of independent control across all channels is not available on the M2-200X2 or M2-500X1 separately.
2/4/5 Channel Input Selection Switch: The input selection switch allows the M2-750X5 to integrate with source units providing 2, 4, or 5 channels of RCA output, reducing the need for Y-cables or signal splitting in installations where the source unit has fewer RCA outputs.
Continuously Variable Punch EQ - Up to 18dB at 45Hz: The onboard Punch EQ provides up to 18dB of continuously adjustable bass boost at 45Hz on the subwoofer channel, allowing output to be tuned to the acoustic environment without a separate EQ or DSP.
Variable Infrasonic Filter - 15Hz to 40Hz Tunable: The subwoofer channel infrasonic filter is tunable from 15Hz to 40Hz at 12dB/octave, providing precise low-frequency protection across different subwoofer drivers and enclosure types.
C.L.E.A.N. Technology - Per-Channel Clip Monitoring: C.L.E.A.N. provides dedicated input and output clip indicators for the front, rear, and subwoofer channels independently, enabling accurate gain calibration across all five channels without carrying distortion over into adjacent channels.
RLC Remote Level Control Included: The included RLC remote level control allows subwoofer output volume to be adjusted from the helm or seating position without accessing the amplifier.
Rollback Protection, NOMAD, and Conformal Coated PCB: Rollback Protection dynamically manages output to prevent thermal stress on the output devices. NOMAD provides real-time protection against shorted speaker wires and dangerously low impedances. The conformal coated circuit board protects against dust and water ingress at the PCB level.
Technical Specs
| Specification | Detail |
|---|---|
| SKU | M2-750X5 |
| Number of Channels | 5 (4 full-range + 1 subwoofer) |
| Total Power | 750W |
| Rated Power - 4-ohm (CTA-2006, less than 1.0% THD+N) | 50W x 4 + 200W x 1 |
| Rated Power - 2-ohm (CTA-2006, less than 1.0% THD+N) | 100W x 4 + 350W x 1 |
| Rated Power - 4-ohm Bridged (CTA-2006) | 200W x 2 (full-range channels) |
| Dynamic Power - 4-ohm (PowerCube) | 70W x 4 + 241W x 1 |
| Dynamic Power - 2-ohm (PowerCube) | 114W x 4 + 426W x 1 |
| Dynamic Power - 4-ohm Bridged (PowerCube) | 234W x 2 (full-range channels) |
| Circuit Topology | Full-Range Class-D |
| Bridgeable | Yes (full-range channels) |
| Frequency Response | 20 Hz - 20 kHz |
| THD + Noise | Less than 1.0% at 4-ohm and 2-ohm |
| Input Sensitivity | Low-Level: 150mV - 4V / High-Level: 450mV - 12V |
| Signal Input | Front: 2 x RCA + 4-Pin Molex / Rear: 2 x RCA + 4-Pin Molex / Sub: 2 x RCA + 4-Pin Molex |
| Input Selection | 2/4/5 Channel Switch |
| Tone Controls | Punch EQ: 0 to +18dB at 45Hz (Continuously Variable, Sub channel) |
| Front High-Pass Crossover | 50 Hz - 250 Hz at 12dB/Octave Butterworth |
| Front Low-Pass Crossover | 50 Hz - 250 Hz at 12dB/Octave Butterworth |
| Rear High-Pass Crossover | 50 Hz - 250 Hz at 12dB/Octave Butterworth |
| Rear Low-Pass Crossover | 50 Hz - 250 Hz at 12dB/Octave Butterworth |
| Sub Low-Pass Crossover | 50 Hz - 250 Hz at 12dB/Octave Butterworth |
| Sub Infrasonic Filter | 15 Hz - 40 Hz at 12dB/Octave Butterworth (Variable) |
| Remote Controls | Yes (RLC Remote Level Control included) |
| Auto-Sense Turn-On | Yes (with RAP bypass switch) |
| Power Wire Gauge | 4 AWG |
| Power Input Connector | Compression Terminal Block |
| Speaker Wire Gauge | 8 AWG |
| Speaker Output Connector | Compression Terminal Block |
| Terminals | Zinc Nickel-Plated Marine Grade Brass |
| Cooling | Convection |
| Heatsink | UV Stable Powder Coated Cast Aluminium (Focused Mass) |
| Circuit Board Protection | Conformal Coated |
| Operating Voltage | 9 - 16 VDC |
| Recommended Fuse (not included) | 120A |
| Max Current Draw at 13.8V Sinewave | 71A |
| Visual Indicators | Power/Protect / C.L.E.A.N. In / C.L.E.A.N. Out (Front, Rear, Sub) |
| Dimensions (H x W x D) | 49 x 173 x 285mm (1.9 x 6.8 x 11.2 inch) |
| Shipping Weight | 2.78kg |
| CTA-2006 Compliant | Yes |
| Quality Testing | RATS (Rockford Automated Testing System) |
| Warranty | 2 Years |
Compatible With / Goes Well With
The M2-750X5 suits marine watercraft and powersports applications requiring a single-unit 5-channel amplifier solution for speakers and a subwoofer. The 2/4/5 channel input switch makes it compatible with a wide range of source units. For higher output marine amplification, refer to the M5-1500X5.
Goes Well With:
- PMX-1 - Rockford Fosgate Punch marine media receiver, a clean source unit pairing for the M2-750X5 in a full marine audio build
- M2-8H - M2 series 8 inch Color Optix marine horn speakers, powered by the four full-range channels of the M2-750X5
- M2WL-8 / M2WL-8B - M2 series wake tower speakers for powering via the full-range channels of the M2-750X5
- M210S4B / M212S4 - M2 series marine subwoofers driven by the dedicated 350W subwoofer channel of the M2-750X5
- M5-1500X5 - Higher output M5 series 5-channel marine amplifier for builds requiring more power across all channels
- RFW4R / RFW4B - Rockford Fosgate 4 AWG marine amplifier wiring kits (red or black) matched to the M2-750X5's 4 AWG power wire requirement
Frequently Asked Questions
What is the difference between the M2-750X5 and the M5-1500X5?
Both are 5-channel marine amplifiers, but they differ significantly in output and feature set. The M2-750X5 is from the M2 Element Ready series, rated at 100W x 4 plus 350W x 1 at 2-ohm, using Full-Range Class-D topology throughout all channels with conformal coating for environmental protection. The M5-1500X5 is from the premium M5 series, rated at 100W x 4 plus 600W x 1 at 2-ohm using Class-AD on full-range channels and Class-BD on the sub channel, with full IPX6 water intrusion rating, the PRESET feature for UTV kits, and greater than 75% efficiency. Choose the M2-750X5 for a complete, economical single-amplifier marine system; choose the M5-1500X5 for the highest protection rating and maximum subwoofer output.
What does the 2/4/5 channel input selection switch do?
The input selection switch configures the M2-750X5 to work with source units that provide 2, 4, or 5 channels of RCA output. On a 2-channel RCA setting, the front RCA inputs feed all five channels internally with the amp distributing signal appropriately. On 4-channel, front and rear pairs are used independently. On 5-channel, all three RCA input pairs (front, rear, sub) are used separately for full independent control. This removes the need for Y-cables in installations where the source unit has fewer RCA outputs.
Can the M2-750X5 be used to power wake tower speakers?
Yes. The four full-range channels can power wake tower speakers such as the M2WL-8 or M2WL-8B, with the dedicated subwoofer channel handling a marine subwoofer simultaneously. The 100W x 4 at 2-ohm rated output per channel is well matched to M2 series marine speakers in typical on-water listening conditions.
What fuse does the M2-750X5 require and is it included?
The M2-750X5 requires a 120A fuse, which is not included in the box and must be sourced separately. This is a larger fuse than the 80A used on the M2-500X1 and M2-200X2, reflecting the M2-750X5's higher current demand of up to 71A maximum at sinewave. Install the fuse as close to the battery as possible in the 4 AWG power supply line.
Does the M2-750X5 require a dedicated remote turn-on wire?
Not necessarily. The Auto-Sense feature activates the amplifier automatically when it detects a high-level (speaker-level) input signal, removing the need for a dedicated remote wire when integrating with OEM or aftermarket source units without a remote output. A RAP bypass switch is also included for vessels with Retained Accessory Power systems to prevent the amplifier from staying on after the ignition is switched off.
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Description
Rockford Fosgate M2-750X5 M2 Series 750 Watt 5-Channel Full-Range Class-D Element Ready Marine Amplifier
A marine grade 750W 5-channel Full-Range Class-D amplifier delivering 100W x 4 plus 350W x 1 at 2-ohm (CTA-2006 rated). Features independent front, rear, and subwoofer channel crossover control, Continuously Variable Punch EQ, variable infrasonic filter, C.L.E.A.N. gain calibration, Rollback Protection, NOMAD speaker protection, RLC remote level control, Auto-Sense turn-on, RCA pass-free conformal coated circuit board, and 2/4/5 channel input selection. Backed by a 2 year warranty.
Product Overview
The Rockford Fosgate M2-750X5 is a 750W 5-channel Full-Range Class-D marine amplifier from the M2 Element Ready series, providing a complete single-amplifier solution for powering both marine speakers and a subwoofer from the one unit. Rated continuous power is 50W x 4 plus 200W x 1 at 4-ohm, or 100W x 4 plus 350W x 1 at 2-ohm (CTA-2006, less than 1.0% THD+N). Dynamic power via PowerCube reaches 114W x 4 plus 426W x 1 at 2-ohm, and 234W x 2 bridged at 4-ohm on the full-range channels.
The M2-750X5 provides fully independent crossover control for the front, rear, and subwoofer channels, each with their own high-pass and low-pass crossover adjustments at 12dB/octave Butterworth (50Hz-250Hz) plus a variable infrasonic filter on the subwoofer channel (15Hz-40Hz). A 2/4/5 channel input selection switch enables flexible integration with source units providing different numbers of RCA outputs. Three dedicated sets of RCA and high-level inputs cover front, rear, and subwoofer channels separately. C.L.E.A.N. (Calibrated Level Eliminates Audible Noise) provides independent input and output clip indicators for each channel group. A Continuously Variable onboard Punch EQ delivers up to 18dB of bass boost at 45Hz for the subwoofer channel.
The circuit board is conformal coated against dust and water, and the UV stable powder coated cast aluminium heatsink provides environmental protection. Zinc nickel-plated marine grade brass connection terminals resist corrosion. Auto-Sense turn-on removes the need for a dedicated remote wire, with a RAP bypass switch available. An RLC remote level control is included for in-cabin subwoofer volume adjustment. Rollback Protection and NOMAD speaker protection are active throughout. RATS tested and optimised using AudioGraph PowerCube.
Features & Benefits
Complete 5-Channel Marine System in One Amplifier: The M2-750X5 powers front speakers, rear speakers, and a subwoofer from a single unit, making it a space-efficient solution for full marine audio builds without the need for two separate amplifiers.
Independent Crossover Control for Each Channel Group: Front, rear, and subwoofer channel groups each have independent high-pass and low-pass crossover controls at 12dB/octave Butterworth (50Hz-250Hz), plus the subwoofer channel adds a variable infrasonic filter (15Hz-40Hz). This level of independent control across all channels is not available on the M2-200X2 or M2-500X1 separately.
2/4/5 Channel Input Selection Switch: The input selection switch allows the M2-750X5 to integrate with source units providing 2, 4, or 5 channels of RCA output, reducing the need for Y-cables or signal splitting in installations where the source unit has fewer RCA outputs.
Continuously Variable Punch EQ - Up to 18dB at 45Hz: The onboard Punch EQ provides up to 18dB of continuously adjustable bass boost at 45Hz on the subwoofer channel, allowing output to be tuned to the acoustic environment without a separate EQ or DSP.
Variable Infrasonic Filter - 15Hz to 40Hz Tunable: The subwoofer channel infrasonic filter is tunable from 15Hz to 40Hz at 12dB/octave, providing precise low-frequency protection across different subwoofer drivers and enclosure types.
C.L.E.A.N. Technology - Per-Channel Clip Monitoring: C.L.E.A.N. provides dedicated input and output clip indicators for the front, rear, and subwoofer channels independently, enabling accurate gain calibration across all five channels without carrying distortion over into adjacent channels.
RLC Remote Level Control Included: The included RLC remote level control allows subwoofer output volume to be adjusted from the helm or seating position without accessing the amplifier.
Rollback Protection, NOMAD, and Conformal Coated PCB: Rollback Protection dynamically manages output to prevent thermal stress on the output devices. NOMAD provides real-time protection against shorted speaker wires and dangerously low impedances. The conformal coated circuit board protects against dust and water ingress at the PCB level.
Technical Specs
| Specification | Detail |
|---|---|
| SKU | M2-750X5 |
| Number of Channels | 5 (4 full-range + 1 subwoofer) |
| Total Power | 750W |
| Rated Power - 4-ohm (CTA-2006, less than 1.0% THD+N) | 50W x 4 + 200W x 1 |
| Rated Power - 2-ohm (CTA-2006, less than 1.0% THD+N) | 100W x 4 + 350W x 1 |
| Rated Power - 4-ohm Bridged (CTA-2006) | 200W x 2 (full-range channels) |
| Dynamic Power - 4-ohm (PowerCube) | 70W x 4 + 241W x 1 |
| Dynamic Power - 2-ohm (PowerCube) | 114W x 4 + 426W x 1 |
| Dynamic Power - 4-ohm Bridged (PowerCube) | 234W x 2 (full-range channels) |
| Circuit Topology | Full-Range Class-D |
| Bridgeable | Yes (full-range channels) |
| Frequency Response | 20 Hz - 20 kHz |
| THD + Noise | Less than 1.0% at 4-ohm and 2-ohm |
| Input Sensitivity | Low-Level: 150mV - 4V / High-Level: 450mV - 12V |
| Signal Input | Front: 2 x RCA + 4-Pin Molex / Rear: 2 x RCA + 4-Pin Molex / Sub: 2 x RCA + 4-Pin Molex |
| Input Selection | 2/4/5 Channel Switch |
| Tone Controls | Punch EQ: 0 to +18dB at 45Hz (Continuously Variable, Sub channel) |
| Front High-Pass Crossover | 50 Hz - 250 Hz at 12dB/Octave Butterworth |
| Front Low-Pass Crossover | 50 Hz - 250 Hz at 12dB/Octave Butterworth |
| Rear High-Pass Crossover | 50 Hz - 250 Hz at 12dB/Octave Butterworth |
| Rear Low-Pass Crossover | 50 Hz - 250 Hz at 12dB/Octave Butterworth |
| Sub Low-Pass Crossover | 50 Hz - 250 Hz at 12dB/Octave Butterworth |
| Sub Infrasonic Filter | 15 Hz - 40 Hz at 12dB/Octave Butterworth (Variable) |
| Remote Controls | Yes (RLC Remote Level Control included) |
| Auto-Sense Turn-On | Yes (with RAP bypass switch) |
| Power Wire Gauge | 4 AWG |
| Power Input Connector | Compression Terminal Block |
| Speaker Wire Gauge | 8 AWG |
| Speaker Output Connector | Compression Terminal Block |
| Terminals | Zinc Nickel-Plated Marine Grade Brass |
| Cooling | Convection |
| Heatsink | UV Stable Powder Coated Cast Aluminium (Focused Mass) |
| Circuit Board Protection | Conformal Coated |
| Operating Voltage | 9 - 16 VDC |
| Recommended Fuse (not included) | 120A |
| Max Current Draw at 13.8V Sinewave | 71A |
| Visual Indicators | Power/Protect / C.L.E.A.N. In / C.L.E.A.N. Out (Front, Rear, Sub) |
| Dimensions (H x W x D) | 49 x 173 x 285mm (1.9 x 6.8 x 11.2 inch) |
| Shipping Weight | 2.78kg |
| CTA-2006 Compliant | Yes |
| Quality Testing | RATS (Rockford Automated Testing System) |
| Warranty | 2 Years |
Compatible With / Goes Well With
The M2-750X5 suits marine watercraft and powersports applications requiring a single-unit 5-channel amplifier solution for speakers and a subwoofer. The 2/4/5 channel input switch makes it compatible with a wide range of source units. For higher output marine amplification, refer to the M5-1500X5.
Goes Well With:
- PMX-1 - Rockford Fosgate Punch marine media receiver, a clean source unit pairing for the M2-750X5 in a full marine audio build
- M2-8H - M2 series 8 inch Color Optix marine horn speakers, powered by the four full-range channels of the M2-750X5
- M2WL-8 / M2WL-8B - M2 series wake tower speakers for powering via the full-range channels of the M2-750X5
- M210S4B / M212S4 - M2 series marine subwoofers driven by the dedicated 350W subwoofer channel of the M2-750X5
- M5-1500X5 - Higher output M5 series 5-channel marine amplifier for builds requiring more power across all channels
- RFW4R / RFW4B - Rockford Fosgate 4 AWG marine amplifier wiring kits (red or black) matched to the M2-750X5's 4 AWG power wire requirement
Frequently Asked Questions
What is the difference between the M2-750X5 and the M5-1500X5?
Both are 5-channel marine amplifiers, but they differ significantly in output and feature set. The M2-750X5 is from the M2 Element Ready series, rated at 100W x 4 plus 350W x 1 at 2-ohm, using Full-Range Class-D topology throughout all channels with conformal coating for environmental protection. The M5-1500X5 is from the premium M5 series, rated at 100W x 4 plus 600W x 1 at 2-ohm using Class-AD on full-range channels and Class-BD on the sub channel, with full IPX6 water intrusion rating, the PRESET feature for UTV kits, and greater than 75% efficiency. Choose the M2-750X5 for a complete, economical single-amplifier marine system; choose the M5-1500X5 for the highest protection rating and maximum subwoofer output.
What does the 2/4/5 channel input selection switch do?
The input selection switch configures the M2-750X5 to work with source units that provide 2, 4, or 5 channels of RCA output. On a 2-channel RCA setting, the front RCA inputs feed all five channels internally with the amp distributing signal appropriately. On 4-channel, front and rear pairs are used independently. On 5-channel, all three RCA input pairs (front, rear, sub) are used separately for full independent control. This removes the need for Y-cables in installations where the source unit has fewer RCA outputs.
Can the M2-750X5 be used to power wake tower speakers?
Yes. The four full-range channels can power wake tower speakers such as the M2WL-8 or M2WL-8B, with the dedicated subwoofer channel handling a marine subwoofer simultaneously. The 100W x 4 at 2-ohm rated output per channel is well matched to M2 series marine speakers in typical on-water listening conditions.
What fuse does the M2-750X5 require and is it included?
The M2-750X5 requires a 120A fuse, which is not included in the box and must be sourced separately. This is a larger fuse than the 80A used on the M2-500X1 and M2-200X2, reflecting the M2-750X5's higher current demand of up to 71A maximum at sinewave. Install the fuse as close to the battery as possible in the 4 AWG power supply line.
Does the M2-750X5 require a dedicated remote turn-on wire?
Not necessarily. The Auto-Sense feature activates the amplifier automatically when it detects a high-level (speaker-level) input signal, removing the need for a dedicated remote wire when integrating with OEM or aftermarket source units without a remote output. A RAP bypass switch is also included for vessels with Retained Accessory Power systems to prevent the amplifier from staying on after the ignition is switched off.
