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75W x 4 @ 4Ω

Amplifiers with a Power Output Rating of 75-Watts x 4-Channels, 4-Ohm Final Impedance

Amplifiers with a Power Output Rating of 75-Watts x 4-Channels, 4-Ohm Final Impedance

RMS power: This rating of any amplifier is the continuous power rating that an amp is designed to output at a maximum continued volume rating. The RMS power specification is one of two numbers to go by when pairing your speakers with an amplifier, not the only 2 but a good starting point. As an example, a speaker driver with a 75-Watt, or 75W for short, RMS rating should be paired with a seventy-five-watt RMS amplifier. We usually recommend an amp to be over powered by 10% RMS so that the power-plant does not have to work at 100% capacity to get 100-percent efficiency from your speakers. This will keep your amplifier from overheating during long periods of continuous operation.

Ohms: Is the resistance rating of an amp and is the second most important when pairing drivers with amplifiers. A power-plant that is 75W @ 4-ohm might put out 150-Watts @ 2Ω. When purchasing an amplifier, the correct pairing of a speaker’s RMS wattage and Ohm ratings with an amp’s output power rating is absolutely essential.

5 products

  • Alpine KTA-30FW : 4ch x 75W RMS @ 2Ω/4Ω Amplifier Alpine KTA-30FW : 4ch x 75W RMS @ 2Ω/4Ω Amplifier, top view.

    Alpine KTA-30FW : 4ch x 75W RMS @ 2Ω/4Ω Amplifier

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    The KTA-F30W is perfect for when you want to boost your sound system but don’t have the space for a large amplifier. It is compatible with an aftermarket or factory head unit and adds up to 4 times the power over the head unit's original built-in power. The KTA-30FW features Alpine’s exclusive Dynamic Peak Power (DPP) technology which uses a new dynamic power supply design that delivers bursts of power during rigorous musical passages. When the amplifier senses that more power is required, the power supply quickly increases the internal gain level, effectively doubling the power for a significant increase in dynamic range at high music volumes. Specifications Alpine's Class D amplifier circuit w/ Dynamic Peak Power (DPP) 75W RMS x 4 @ 2Ω/4Ω, 14.4V, ≤ 1% THD+N 150W DPP x 4 @ 2Ω/4Ω, 14.4V, ≤ 1% THD+N >85dB S/N (ref. 1W into 4Ω) >0.1% THD (ref. 1W into 4Ω) 20-20kHz Frequency response (+/-1dB) Weather resistant (IP66 rating) OEM-grade connector wire harness Speaker/RCA inputs (selectable, High range=0.5-10V, Low range=0.2-4V) Sound control: Crossovers – Off/HP/LP, Fc=50-400Hz @ -12dB/Oct. (variable); Input gain settings (variable); 2ch/4ch input (selectable) Alpine KTA-30FW Manual

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    $419.99

  • Last One! JL Audio M400/4 : 4ch Marine Amplifier, 4ch x 100W or 75W RMS @ 2Ω or 4Ω JL Audio M400/4 : 4ch Marine Amplifier, top side.

    JL Audio M400/4 : 4ch Marine Amplifier, 4ch x 100W or 75W RMS @ 2Ω or 4Ω - Discontinued

    1 Available for pickup

    M-Series 4-Channel Class-D Full-Range Marine-Grade Amplifier, 75-Watts x 4-Channel @ 4-Ohm This tiny amplifier packs a serious full-range punch, delivering a staggering 100W to each of its four channels into 2Ω (14.4V, 1% THD). The breakthrough that makes this much power possible in such a small chassis is JL's NexD™ ultra-high-speed switching design, which allows for full bandwidth Class D operation with extremely low distortion and outstanding efficiency. Use the M400/4 in combination with JL's M600/1 monoblock to build a 1000W amplification system to power four satellites and a subwoofer... and fit the whole thing under a seat. Or, use the M400/4 by itself to power two satellites, plus a subwoofer. With M-Series amplifier, the possibilities are endless. The M400/4 includes a 12dB / octave filter for each channel bank, which can be configured as a low-pass or high-pass filter and offers continuously variable cutoff frequency selection from 50-500Hz. With the addition of an HD-RLC remote level control (sold separately), the amplifier's Ch. 1 & 2 level or overall level can be directly controlled from a remote location. This marine amplifier features white and gray powder-coat finishes, a gasketed cover for the controls and stainless steel hardware for durability in the marine environment. Specifications @ 4 Ω 75 W RMS x 4 @ 2 Ω 100 W RMS x 4 Bridged @ 4Ω 200 W RMS x 2 Frequency Response 12 Hz - 22 kHz (+0, -1dB) S/N Ratio, referred to highest rated power >104 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth) S/N Ratio, referred to 1 W >84 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) Damping Factor @ 4 Ω >150 / 50 Hz Damping Factor @ 2 Ω >75 / 50 Hz THD+N @ Rated Power <1% @ 2 Ω per Ch. Input Voltage Range @ RCA Inputs 100 mV - 4 V RMS Min.Copper Power / Ground Wire Gauge 4 AWG wire Fuse Rating 40 A (AFS, AGU or MaxiFuse™) Filter Mode(s) Low-Pass or High-Pass Filter Slope(s) 12 dB/octave Filter Frequency Range 50 Hz - 500 Hz Detented, Calibrated Filter Freq. Potentiometers Yes Filter Defeat Function Yes Remote Level Control Optional (HD-RLC) Remote Level Modes 2 or All channels Channel Input Mode Switch Yes (2/4 ch.) Pass-Through Preamp Output Buffered Source Channel Selection for PreOuts Yes JL Audio M400/4 Manual

    1 Available for pickup

    $649.99

  • JL Audio XDM1000/5 : 5ch Marine Amplifier, 75W x 4ch + 600W @ 2Ω JL Audio XDM1000/5 : 5ch Marine Amplifier, settings section.

    JL Audio XDM1000/5 : 5ch Marine Amplifier, 75W x 4ch + 600W @ 2Ω

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    XDM-Series Five-Channel Class-D Marine-Grade Amplifier, 75-Watts x Four-Channels @ 4-Ohm and 600-Watt Mono @ 2-Ohm The XDM1000/5 delivers up to 1000W of clean power and is ideal for an audiophile-grade, subwoofer + four satellite system. With this potent powerhouse, you can drive two pairs of quality component speaker systems with plenty of clean power (75W x 4 @ 4Ω), while also generating a stout 600W of power for a subwoofer system. The technology that makes this much power possible in such a small chassis is JL-Audio's high-speed NexD switching amplifier design. Suitable for car or boat installations, the XDM1000/5 is built with marine-grade materials and features an exclusive, dual-mode input filter for noise-free performance in boats or cars. Automatic turn-on capability (via signal sensing or DC-offset sensing) is also onboard for easy factory system upgrades. The XDM1000/5 includes a 12dB / octave high-pass filter for one main channel pair, a 12dB octave high-pass or bandpass filter for the other main channel pair, plus a variable slope low-pass filter for its subwoofer channel. All three filters offer continuously variable cutoff frequency selection from 50-500Hz. This amplifier's filters can also be configured as a true 3-way crossover, with a low-pass filter for the subwoofer channel, a bandpass filter on Ch. 3 & 4, and a high-pass filter on Ch. 1 & 2. An "x10" multiplier switch on the Ch. 1 & 2 high-pass filter allows its cutoff frequency to be adjusted from 50-500Hz or 500-5000Hz. With the addition of an optional HD-RLC or MHD-RLC (water-resistant) remote level controller (each sold separately), you have the ability to adjust the level of all amplifier channels or just the subwoofer channel directly from the driver's seat or helm. Finished in a sleek, black powder-coat, all controls are protected beneath a gasketed, removable top cover for easy access. Specifications Main Channels @ 4 Ω 75 W RMS x 4 @ 14.4V Main Channels @ 2 Ω 100 W RMS x 4 @ 14.4V Main Channels - Bridged @ 4Ω 200 W RMS x 2 @ 14.4V Subwoofer Channel @ 4 Ω 400 W RMS x 1 @ 14.4V Subwoofer Channel @ 3 Ω 500 W RMS x 1 @ 14.4V Subwoofer Channel @ 2 Ω 600 W RMS x 1 @ 14.4V Subwoofer Channel @ 1.5 Ω N/A Main Channels @ 4 Ω 60 W RMS x 4 @ 12.5V Main Channels @ 2 Ω 90 W RMS x 4 @ 12.5V Main Channels - Bridged @ 4Ω 180 W RMS x 2 @ 12.5V Subwoofer Channel @ 4 Ω 360 W RMS x 1 @ 12.5V Subwoofer Channel @ 3 Ω 480 W RMS x 1 @ 12.5V Subwoofer Channel @ 2 Ω 600 W RMS x 1 @ 12.5V Subwoofer Channel @ 1.5 Ω N/A Frequency Response (Main Channels) 12 Hz - 22 kHz (+0, -1dB) Frequency Response (Subwoofer Channel) 10 Hz - 1 kHz (+0, -1dB) S/N Ratio, referred to highest rated power (Main Channels) >104 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth) S/N Ratio, referred to 1 W >84 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) Damping Factor @ 4 Ω >150 / 50 Hz Damping Factor @ 2 Ω >75 / 50 Hz THD+N @ Rated Power (Main Channels) <1% @ 2 Ω per Ch. THD+N @ Rated Power (Subwoofer Channels) <1% @ 2 Ω per Ch. Input Voltage Range @ RCA Inputs 200 mV - 4 V RMS Min.Copper Power / Ground Wire Gauge 4 AWG wire Fuse Rating 80 A (AFS, AGU or MaxiFuse™) Filter Mode(s): Channels 1 & 2 (front) High-Pass only Filter Slope(s): Channels 1 & 2 (front) 12 dB/octave Filter Frequency Range: Channels 1 & 2 (front) 50 Hz - 5 kHz Filter Mode(s): Channels 3 & 4 (rear) High-Pass or Bandpass Filter Slope(s): Channels 3 & 4 (rear) 12 dB/octave Filter Frequency Range: Channels 3 & 4 50 Hz - 500 Hz Filter Mode(s): Subwoofer Channel Low-Pass only Filter Slope(s): Subwoofer Channel 12/24 dB/octave Filter Frequency Range: Subwoofer Channel 50 Hz - 500 Hz Detented, Calibrated Filter Freq. Potentiometers Yes Filter Defeat Function Yes Infrasonic Filter: Subwoofer Channel none Remote Level Control Optional HD-RLC or MHD-RLC (water-resistant) Remote Level Modes Sub Ch. or All Channels Channel Input Mode Switch Yes (2/4/6 ch.) Pass-Through Preamp Output None Source Channel Selection for PreOuts N/A Height (H) 2.05 in / 52 mm Width (W) 14.73 in / 374 mm Depth (D) 7.09 in / 180 mm JL Audio XDM1000/5v2 Manual

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    $999.99

  • JL Audio XDM400/4 : 4ch Marine Amplifier, 100W/75W x 4ch @ 2Ω/4Ω. JL Audio XDM400/4 : 4ch Marine Amplifier, settings section.

    JL Audio XDM400/4 : 4ch Marine Amplifier, 100W/75W x 4ch @ 2Ω/4Ω

    Pre-Order Today!

    XDM-Series Four-Channel Class-D Marine-Grade Amplifier, 100-Watts x Four-Channels @ 2-Ohm or 75-Watts x 4-Channels @ Four-Ohm The ultra-compact XDM400/4 packs a serious full-range punch, generating a whopping 100-watts to each of its four channels into 2-ohms (14.4V, 1% THD). The technology that makes this much power possible in such a compact chassis is our advanced NexD high-speed switching design, which permits full bandwidth Class-D operation with extremely low distortion and remarkable efficiency. Suitable for car or boat installations, the XDM400/4 is built with marine-grade materials and features an exclusive, dual-mode input filter for noise-free performance in boats or cars. Automatic turn-on capability (via signal sensing or DC-offset sensing) is also onboard for easy factory system upgrades. Combine the XDM400/4 with our XDM600/1 monoblock to build a stunning 1000W amplification system to power four satellites and a subwoofer... and fit the whole thing under a seat or deck. Or, use the XDM400/4 by itself to power two satellites, plus a subwoofer.  The XDM400/4 includes a 12dB / octave filter for each channel bank, which can be configured as a low-pass or high-pass filter and offers continuously variable cutoff frequency selection from 50-500Hz. With the addition of an optional HD-RLC or MHD-RLC (water-resistant) remote level controller (each sold separately), you have the ability to adjust the level of all amplifier channels or just the rear channels directly from the driver's seat or cockpit. Finished in a sleek, black powder-coat, all controls are protected beneath a gasketed, removable top cover for easy access. Specifications @ 4 Ω 75 W RMS x 4 @ 14.4V @ 2 Ω 100 W RMS x 4 @ 14.4V Bridged @ 4Ω 200 W RMS x 2 @ 14.4V @ 4 Ω 60 W RMS x 4 @ 12.5V @ 2 Ω 90 W RMS x 4 @ 12.5V Bridged @ 4Ω 180 W RMS x 2 @ 12.5V Frequency Response 12 Hz - 22 kHz (+0, -1dB) S/N Ratio, referred to highest rated power >104 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth) S/N Ratio, referred to 1 W >84 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) Damping Factor @ 4 Ω >150 / 50 Hz Damping Factor @ 2 Ω >75 / 50 Hz THD+N @ Rated Power <1% @ 2 Ω per Ch. Input Voltage Range @ RCA Inputs 200 mV - 4 V RMS Min.Copper Power / Ground Wire Gauge 4 AWG wire Fuse Rating 40 A (AFS, AGU or MaxiFuse™) Filter Mode(s) Low-Pass or High-Pass Filter Slope(s) 12 dB/octave Filter Frequency Range 50 Hz - 500 Hz Detented, Calibrated Filter Freq. Potentiometers Yes Filter Defeat Function Yes Remote Level Control Optional HD-RLC or MHD-RLC (water-resistant) Remote Level Modes 2 or All channels Channel Input Mode Switch Yes (2/4 ch.) Pass-Through Preamp Output Buffered Source Channel Selection for PreOuts Yes Filter Mode(s) Low-Pass or High-Pass Filter Slope(s) 12 dB/octave Filter Frequency Range 50 Hz - 500 Hz Detented, Calibrated Filter Freq. Potentiometers Yes Filter Defeat Function Yes Remote Level Control Optional HD-RLC or MHD-RLC (water-resistant) Remote Level Modes 2 or All channels Channel Input Mode Switch Yes (2/4 ch.) Pass-Through Preamp Output Buffered Source Channel Selection for PreOuts Yes JL Audio XDM400/4v2 Manual

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    $649.99

  • JL Audio XDM700/5 : 5ch Marine Amplifier, 75W x 4ch + 300W @ 2Ω JL Audio XDM700/5 : 5ch Marine Amplifier, top side.

    JL Audio XDM700/5 : 5ch Marine Amplifier, 75W x 4ch + 300W @ 2Ω

    Pre-Order Today!

    XDM-Series Five-Channel Class-D Marine-Grade Amplifier, 75-Watts x Four-Channels @ 4-Ohm and 300-Watt Mono @ 2-Ohm The XDM700/5 is ideal for a complete audiophile-grade, subwoofer + four satellite system, and fits comfortably in just about any vehicle or vessel. With this incredible little amplifier, you can drive two pairs of quality component speaker systems with plenty of clean power (75W x 4 @ 4Ω), while also generating a solid 300W of power for a subwoofer system. The technology that makes this much power possible in such a small chassis is JL-Audio's high-speed NexD switching amplifier design. Suitable for car or boat installations, the XDM700/5 is built with marine-grade materials and features an exclusive, dual-mode input filter for noise-free performance in boats or cars. Automatic turn-on capability (via signal sensing or DC-offset sensing) is also onboard for easy factory system upgrades. The XDM700/5 includes a 12dB / octave high-pass filter for one main channel pair, a 12dB octave high-pass or bandpass filter for the other main channel pair, plus a variable slope low-pass filter for its subwoofer channel. All three filters offer continuously variable cutoff frequency selection from 50-500Hz. This amplifier's filters can also be configured as a true 3-way crossover, with a low-pass filter for the subwoofer channel, a bandpass filter on Ch. 3 & 4, and a high-pass filter on Ch. 1 & 2. An "x10" multiplier switch on the Ch. 1 & 2 high-pass filter allows its cutoff frequency to be adjusted from 50-500Hz or 500-5000Hz. With the addition of an optional HD-RLC or MHD-RLC (water-resistant) remote level controller (each sold separately), you have the ability to adjust the level of all amplifier channels or just the subwoofer channel directly from the driver's seat or helm. Finished in a sleek, black powder-coat, all controls are protected beneath a gasketed, removable top cover for easy access. Specifications Main Channels @ 4 Ω 75 W RMS x 4 @ 14.4V Main Channels @ 2 Ω 100 W RMS x 4 @ 14.4V Main Channels - Bridged @ 4Ω 200 W RMS x 2 @ 14.4V Subwoofer Channel @ 4 Ω 180 W RMS x 1 @ 14.4V Subwoofer Channel @ 3 Ω 240 W RMS x 1 @ 14.4V Subwoofer Channel @ 2 Ω 300 W RMS x 1 @ 14.4V Subwoofer Channel @ 1.5 Ω N/A Main Channels @ 4 Ω 60 W RMS x 4 @ 12.5V Main Channels @ 2 Ω 90 W RMS x 4 @ 12.5V Main Channels - Bridged @ 4Ω 180 W RMS x 2 @ 12.5V Subwoofer Channel @ 4 Ω 180 W RMS x 1 @ 12.5V Subwoofer Channel @ 3 Ω 240 W RMS x 1 @ 12.5V Subwoofer Channel @ 2 Ω 300 W RMS x 1 @ 12.5V Subwoofer Channel @ 1.5 Ω N/A Frequency Response (Main Channels) 12 Hz - 22 kHz (+0, -1dB) Frequency Response (Subwoofer Channel) 10 Hz - 1 kHz (+0, -1dB) S/N Ratio, referred to highest rated power (Main Channels) >104 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth) S/N Ratio, referred to 1 W >84 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) Damping Factor @ 4 Ω >150 / 50 Hz Damping Factor @ 2 Ω >75 / 50 Hz THD+N @ Rated Power (Main Channels) <1% @ 2 Ω per Ch. THD+N @ Rated Power (Subwoofer Channels) <1% @ 2 Ω per Ch. Input Voltage Range @ RCA Inputs 200 mV - 4 V RMS Min.Copper Power / Ground Wire Gauge 4 AWG wire Fuse Rating 60 A (AFS, AGU or MaxiFuse™) Filter Mode(s): Channels 1 & 2 (front) High-Pass only Filter Slope(s): Channels 1 & 2 (front) 12 dB/octave Filter Frequency Range: Channels 1 & 2 (front) 50 Hz - 5 kHz Filter Mode(s): Channels 3 & 4 (rear) High-Pass or Bandpass Filter Slope(s): Channels 3 & 4 (rear) 12 dB/octave Filter Frequency Range: Channels 3 & 4 50 Hz - 500 Hz Filter Mode(s): Subwoofer Channel Low-Pass only Filter Slope(s): Subwoofer Channel 12/24 dB/octave Filter Frequency Range: Subwoofer Channel 50 Hz - 500 Hz Detented, Calibrated Filter Freq. Potentiometers Yes Filter Defeat Function Yes Infrasonic Filter: Subwoofer Channel none Remote Level Control Optional HD-RLC or MHD-RLC (water-resistant) Remote Level Modes Sub Ch. or All Channels Channel Input Mode Switch Yes (2/4/6 ch.) Pass-Through Preamp Output None Source Channel Selection for PreOuts N/A Height (H) 2.05 in / 52 mm Width (W) 10.23 in / 260 mm Depth (D) 7.09 in / 180 mm Net Weight 6.15 lb / 2.79 kg JL Audio XDM700/5 Manual

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    $899.99

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