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Rockford Fosgate Power T750X1bd

Compact mono subwoofer amplifier — 750 watts RMS x 1 at 1 to 2 ohms

Item # 575T750X1

Rockford Fosgate's Power Series T750X1bd mono amplifier can drive up to 750 watts RMS into a 1-ohm load, allowing...

Rockford Fosgate's Power Series T750X1bd mono amplifier can drive up to 750 watts RMS into a 1-ohm load, allowing...

Item # 575T750X1

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About the Rockford Fosgate Power T750X1bd

Super-compact, bursting with power

Rockford Fosgate's Power Series T750X1bd mono amplifier can drive up to 750 watts RMS into a 1-ohm load, allowing you to power multiple subs for bigger and better bass. A dual-fan forced air cooling system keeps this sturdy little amp from overheating, so it can play hard for a long time.

Super-compact, bursting with power

Rockford Fosgate's Power Series T750X1bd mono amplifier can drive up to 750 watts RMS into a 1-ohm load, allowing you to power multiple subs for bigger and better bass. A dual-fan forced air cooling system keeps this sturdy little amp from overheating, so it can play hard for a long time.

Rockford Fosgate's high-tech solutions yield more power

This Power Series amplifier actively monitors speaker or sub performance using Rockford Fosgate's Constant Power technology. A subwoofer's impedance naturally fluctuates as it performs. So, just like your cruise control increases the engine's RPM to maintain your car's speed uphill, Constant Power maintains this amp's output by increasing its internal voltage and current when the sub's impedance rises. This results in up to a 25% increase in the amp's total power output, especially in the crucial range below 50 Hz where a sub amp really has to shine.

Rockford Fosgate T750X1bd

T750X1bd control panel with clip lights

Easy to set 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 works like this: play the setup tone on the included test CD, adjust the receiver volume until a red clip light on the amp goes out, then turn the amp gain up until a blue light comes on. It's that simple — your amplifier will be perfectly set to match your receiver's output. When your receiver reaches maximum clean volume, you'll get maximum clean power from your Power amp. At quiet listening levels, you'll hear less background noise and more of your music.

Clip lights monitor distortion

If that blue light turns solid red while you're playing music, the amp's telling you that your source is distorting and you should turn it down, or risk damage to your gear. The optional PLC2 remote level control also doubles as a clip indicator, so you can see from the front seat if your music's clipping and restore pristine sound.

Confused about impedance? Check out our article on matching subs and amps.


Product highlights:

  • mono subwoofer amplifier
  • 500 watts RMS x 1 at 4 ohms (750 watts RMS x 1 at 2 ohms)
  • 750 watts RMS x 1 at 1 ohm
  • CEA-2006 compliant
  • Class BD amplifier technology with Constant Power topology
  • C.L.E.A.N. gain setup system includes clip lights and test tone CD
  • differential input circuitry helps eliminate hum
  • dual-fan forced induction cooling
  • variable low-pass filter (50-250 Hz, 12 dB/octave)
  • switchable subsonic filter (28 Hz, 12 dB/octave)
  • variable Punch EQ (0-18 dB at 45 Hz)
  • optional PLC2 Punch Level Control wired remote with clip light available
More Info:
  • preamp and speaker-level inputs
  • signal-sensing turn-on with speaker-level input eliminates need for remote turn-on lead
  • 8-gauge power and ground leads and a 100-amp fuse recommended — wiring and hardware not included with amplifier
  • no onboard fuses — when installing multiple amps in a system, an additional 100-amp in-line fuse between the distribution block and the amplifier is recommended
  • 8-1/2"W x 1-11/16"H x 4-5/16"D
  • warranty: 2 years (extends to 3 years when purchased with a Rockford Fosgate RFK8, RFK8i, or RFK4D amp wiring kit)
  • Our 60-day money-back guarantee
  • MFR # T750X1BD

What's in the box:

  • Mono amplifier
  • 14" Input harness (4-pin Molex connector to 2 female RCAs)
  • Removable power/ground/remote turn-on plug (installed)
  • Removable speaker output plug (installed)
  • Setup disc CD-ROM
  • Amplifier Quick Setup sheet
  • Certificate of Performance Verification

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Warranty Information


Overview: The Rockford Fosgate Power T750X1bd is an ultra-compact mono-block amplifier. Even though the amplifier is only 8-1/2" x 4-1/4", it puts out a full 500 watts x 1 at 4 ohms, 750 x 1 at 2 ohms, or 750 x 1 at 1 ohm.

Class BD: The amplifier features Rockford Fosgate's proprietary Class bd technology, which is more efficient than typical Class AB amplifiers, with lower distortion than Class D amps. Class AB amps typically have 20-60% efficiency, with the remaining power generating heat. Class bd amps are 75-80% efficient, creating more power to drive your speakers, and less creating heat.

Constant Power: Rockford Fosgate uses a patented circuit design to gain up to 25% more output power. Constant Power actively increases the voltage and current in direct relationship to the rise and fall of music signals to provide additional power.

Fan Cooled: The T750X1bd features extruded aluminum heat sinks and dual fans to keep the amp running cool. Dual Fan Forced Induction pulls in fresh air, which pulls heat off of the MOSFETs, and directs airflow into the exhaust channel and out of the amplifier. Since the top and bottom heat sinks are decoupled, the top remains cool to the touch. When installing, you should leave at least 2-3" of clearance around the ends of the amplifier to optimize air flow to the fan intake and exhaust vents.

C.L.E.A.N. Technology: Using Rockford's C.L.E.A.N. (Calibrated Level Eliminates Audible Noise) technology, you can easily and precisely set up the amplifier levels to eliminate distortion from damaging your speakers. Simple LED indicators are used, instead of test equipment, to identify signal clipping at both the input and output, and to match the audio source to the amplifier.


Top Mounted Controls: The T750X1bd features easy-to-reach controls on the top panel of the amplifier. These rotary controls can be set with a small screwdriver (not included). The controls include:

  • Input Level: This rotary control lets you match the output of the audio source to the amplifier.
  • Punch EQ: The Punch EQ eliminates frequency shift with boost. It functions as a 0 to +18dB variable Bass Boost at 45Hz.
  • Frequency: The Butterworth crossover is internally set to Low Pass, and the cutoff frequency is constantly variable between 50Hz and 250Hz with a slope of 12dB/octave.
  • Infrasonic Filter: The 2-way switch lets you engage (or turn off) the built-in Infrasonic Filter. The filter has a fixed cutoff frequency of 28Hz, with a slope of 12dB/octave. The Infrasonic Filter cuts out frequency below 28Hz that cause distortion, and are difficult for speakers to reproduce.

LED Indicators: The amplifier has three LED indicators on its top panel:

  • Input Clip Indicator: The input clip indicator works in conjunction with the audio source's volume knob. It will illuminate red when the audio source reaches its clipping point.
  • Output Clip Indicator: The output clip indicator works in conjunction with the amplifier's input level knob. It will illuminate red when the output level has reached the clipping point. When setting the level using test tones, you should adjust the output level until the LED glows blue. If setting the output level using music, the LED should glow blue with only an occasional red indication.
  • Power/Protect: The Power LED illuminates blue when the unit is turned on. If the LED turns yellow, a short circuit or too low of an impedance has been detected at the speaker connections. If the LED turns red, the amp has overheated and has shut down.


Left Side of Amplifier:

  • Remote Punch Level Control: This RJ45 jack lets you plug in the optional PLC2 Punch Remote Level Control. The control needs to be switched to the ON position in order to use the remote level control.
  • Inputs: The 4-pin Molex connector works with the supplied RCA Input Harness. The amp will accept signals from either high-level (speaker) or low-level (RCA) sources. If connected to a high-level input signal, the amp's auto turn-on feature is active.
Note: For high-level input, you can either splice RCA plugs onto the source unit's speaker wires, or cut the RCAs off of the supplied input harness and splice on speaker wires from the source unit using the standard wire color code (white=left, gray=right).

Right Side of Amplifier:

  • Power/Remote Terminals: The amplifier's Power, Ground, and Remote terminals are located in a separate plug-in quick connector. The connector has compression terminals that will accept up to 8-gauge wire. When utilizing a high-level input signal, the auto turn-on feature is active, and the Remote terminal can be used as an output to turn on/off up to two additional amplifiers or other accessories. A small screwdriver (not included) is required to tighten/loosen the compression terminals. Once the wires are installed in the quick connector, the connector can be plugged into the amplifier.
    • Note: The amplifier has no built-in fuses. It is recommended that a 100A fuse be placed on the power wire about 18" from the battery.
  • Speakers: The speaker output has removable compression terminals that will accept up to 10-gauge wire.

Warranty Information

Warranty Terms: Rockford Fosgate Power-series amplifiers carry a two year warranty, when purchased from an Authorized Rockford Fosgate Dealer.

Extended Warranty Offer: Rockford Fosgate offers a one-year extended warranty (for a total of 3 years) when the amplifier is installed using a matching Rockford Fosgate installation kit, such as the RFK8 or RFK8i.

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Customer Q&A

Crutchfield asked: Why did you buy this?
Recommended by Crutchfield staff [ Jeff  Jul 18, 2018 ]
Have had very good results from Rockford amplifiers, especially the punch, and power series. [ Paul  Jun 08, 2018 ]
It has the necessary power requirements for my sub. [ Phillip  May 10, 2018 ]
Small size [ joseph  Feb 05, 2018 ]

5 questions already asked

My alternator is rated at 135A, this amp wants 100A. My local audio shop insists itâ??s safe for and wonâ??t damage my alternator. Is this true?
[ Marshall  Jun 12, 2019 ]
3 answers
It depends on the state of your battery, really. If you drain your battery down to a very low state then start your car, most of the alternator current will go to recharging that dead battery. If you then start adding more loads like bumping a subwoofer and cranking the AC you could strain your alternator. It probably won't break but this kind of behavior will lower its lifespan and possibly cause other electrical systems to have lower voltage, causing them to turn off or go into a reset condition.
[ Bryce  Jun 19, 2019 ]
I installed a 2 farad capacitor with the amp..any surges will pull off of that instead of the alternator
[ BRIAN  Jun 19, 2019 ]
Running amps makes your alternator work harder. Meaning it wears out faster. As for damage I doubt it. Ask an auto mechanic, they'd know more about it than someone who sells car audio. I use a 60 amp fuse on mine and it works fine. Depends on what you're running.
[ robert  Jun 19, 2019 ]
would this be sufficient to replace the amp in an alpine plv-7 ?
[ abrob  May 17, 2018 ]
2 answers
The built in amplifier is a 500 watt rms. The true power of the T750X1BD for the one I purchased is 1069 watts @ 1 ohm. 539 @ 4 ohms. If the built in amplifier is removable to access the subwoofer connecting wires or if you use jumper wires from the existing amp ports, this amplifier would be more than sufficient.
[ austin  Jun 03, 2018 ]
This amplifier hits hard..straight out of the box is 1082 watts @ 1 OHM...Well worth the money
[ BRIAN  Jun 03, 2018 ]
Would this be efficient for 2 Alpine SWR 12D2â??S ? Wired Dow to 2 ohms? Or would they be under powered?
[ Chris  Feb 23, 2018 ]
1 answer
We recommend powering a subwoofer with at least 70% of the top RMS it can handle. This is for best sound quality. That being said, you can still power two of those subwoofers with this amp; just won't get the all the clarity and performance the subs are built to produce. Also, you can contact an advisor on 1-800-324-9695 or through our online chat for a personal recommendation on an amp for your subwoofers. My Bio:
[ Paul  Mar 05, 2018 ]  Staff
Will this amp be good for 2 pioneer ts-sw3002s4 svc 4 ohm I have them wired down to 2ohms when I test the wires they show 2.5ohms I have a alpine mrv-f500 on them now and I have to turn it up all the way to get any real bass out of them?
[ Matthew  Dec 30, 2017 ]
1 answer
Yes. You'll get up to 750 watts RMS from the Rockford T750X1BD amplifier (375 RMS per sub) when you wire the two 4Ohm subs in parallel (for the 2 Ohm final load). The Pioneer are rated for up to 400 RMS each so, this is a quality match for them.
[ Ryan  Jan 05, 2018 ]  Staff
How would this perform with a single kicker comp xv cvx102. 600rms 1200 peak?
[ Pat  Nov 21, 2017 ]
2 answers
With the T750X1BD, its power ratings are under sold. My build sheet says @ 1 ohm it's over 1k watts. So, if purchased, wire sub to 4 ohms and it it will do excellent.
[ austin  Jun 03, 2018 ]
It's a decent match. You can wire the dual 2 Ohm coils in parallel to present the final 1 Ohm load to the amplifier. This will glean up to 750 watts RMS from the amp which is more than the Kicker is rated to handle (600 RMS). So, you'll just need to be sure to set the amplifier gain properly (always recommended) to ensure you do not blow out the sub. I hope that helps. My Bio:
[ Ryan  Nov 29, 2017 ]  Staff

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