Rockford Fosgate T750X1bd Power 750W Mono Amp
Power 750-watt Class-bd mono amplifier with Constant Power
$549.99
Overview
The Rockford Fosgate T750X1bd is a Power Series Class-bd mono amplifier rated at 500 watts x 1 into 4 ohms and 750 watts x 1 into 2 ohms or 1 ohm. Patented Constant Power boosts output across varying impedance loads, with C.L.E.A.N. clip indicators, a 50–250 Hz low-pass, and a 28 Hz infrasonic filter. Dual-fan cooling and optional PLC2 remote bass control suit serious subwoofer systems.
Product details
Power Class-bd mono output
Rockford Fosgate rates the T750X1bd at 500 watts x 1 into 4 ohms and 750 watts x 1 into 2 ohms or 1 ohm. Frequency response is 20 Hz to 230 Hz (±1 dB). Class-bd topology with patented Constant Power is designed to hold output as impedance shifts with excursion and temperature. Average efficiency is listed above 85%.

Controls and protection
A 50 Hz to 250 Hz low-pass at 12 dB/octave Butterworth and a fixed 28 Hz infrasonic filter shape the sub signal. Bass boost runs 0 to +18 dB at 45 Hz. C.L.E.A.N. input and output clip LEDs help set gains. Differential inputs with high-level auto turn-on, remote-out when using high-level inputs, and optional PLC2 Punch Level Control support flexible installs. Dual extruded heat sinks and dual-fan cooling manage heat under load.

Wiring checklist
Power wire gauge is 8 AWG with a recommended 100 A fuse not included. Speaker wire gauge is 10 AWG on detachable compression terminals. Chassis size is about 1.6 by 4.3 by 8.3 inches. A subwoofer and the optional PLC2 remote are sold separately. Confirm 1-ohm stability and electrical upgrades before connecting a low-impedance load.
Key features
- Power Series Class bd mono amplifier with 750 watts total rated power
- Five hundred watts at 4 ohms or 750 watts at 2 ohms and 1 ohm loads
- Patented Constant Power designed to hold output as impedance shifts
- Low pass crossover from 50 Hz to 250 Hz with 28 Hz infrasonic filter
- Bass boost from zero to plus 18 dB at 45 Hz for subwoofer tuning
- C.L.E.A.N. input and output clip detection LEDs for accurate gain setup
- Dual fan cooled extruded heat sinks in a compact Power Series chassis
- Optional PLC2 Punch Level Control remote sold separately for dash bass
Specifications
| Weight | 3.44 lbs |
|---|---|
| Dimensions | 8.3 × 4.3 × 1.6 in |
| Channels | Mono |
| Brand | Rockford Fosgate |
| Model | T750X1bd |
| SKU | T750X1BD |
| Product type | Amplifier |
| Total Power | 750 Watts |
| Rated Power (RMS) | 500 W x 1 @ 4 ohm; 750 W x 1 @ 2 ohm; 750 W x 1 @ 1 ohm |
| Circuit Topology Class | Class BD |
| Bridgeable | No |
| Frequency Response | 20 Hz – 230 Hz +/-1 dB |
| Efficiency | >85% average |
| Input Sensitivity | 150 mV to 12 V |
| THD+N | <1.0% @ 4 ohm, 2 ohm, and 1 ohm above 35 Hz |
| Tone Controls | Bass 0 to +18 dB @ 45 Hz |
| Crossover Controls | Low-Pass 50-250 Hz @ 12 dB/oct; Infrasonic 28 Hz @ 12 dB/oct |
| Remote Controls | Optional PLC2 Punch Level Control |
| Power Wire Gauge | 8 AWG |
| Speaker Wire Gauge | 10 AWG |
| Recommended Fuse | 100 A (not included) |
| Operating Voltage | 9 – 16 VDC |
| Dimensions (H x W x D) | 1.6" x 4.3" x 8.3" (4.1 x 10.8 x 21.1 cm) |
| Shipping Weight | 3.44 lbs (1.56 kg) |
Important notes
- Recommended 100 A fuse is not included; install one at the battery.
- PLC2 remote bass knob is optional and sold separately.
- Confirm 1-ohm speaker load stability and vehicle electrical capacity before connecting.
- Subwoofer and wiring kit are sold separately.
What's in the box
- (1) T750X1bd mono amplifier
- Mounting hardware
- Configurable input harness (RCA and speaker-level inputs)







