Rockford Fosgate R2-750X5 Prime Series 5-Channel 100W RMS x 4 at 2-Ohms + 5th Channel 350W RMS x 1 at 2-Ohms, Class-D Full Range Car Amplifier
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What's Inside?
- • 5-Channel Class-D Full-Range Car Amplifier
- • (3) 7" Speaker input harnesses
- • (4) 3/4" Screws
- • (2) 1/2" Screws
- • (5) Flat washers
- • Nut
- • 3mm Allen Hex key
- • Wired Remote Level Control module
- • 16' Remote cable (RJ-25 connector on both ends)
- • Certificate of Performance
- • Rockford Fosgate contact information
- • Owner's Manual
Why Choose Rockford Fosgate R2-750X5 5-Channel Amplifier?
One Amp That Runs Your Whole System
This 5-channel full-range Class D amplifier packs your front, rear, and subwoofer power into one compact chassis, so you do not need multiple amps cluttering your ride. With flexible 5-channel, 4-channel, or 3-channel configurations, it adapts easily whether you are building a full system or upgrading step by step. Add in CEA-2006 certified ratings, and you know the power you are getting is real, tested, and consistent.
Clean Power Across Every Speaker
You get 50W x 4 RMS for your full-range speakers, strong bridged options when you want more output, and a dedicated sub channel pushing up to 350W RMS for solid low-end performance. The Class D architecture keeps everything efficient and cool while still delivering punchy, clean sound. With independent control for front, rear, and sub channels, you can fine-tune your entire soundstage exactly how you like it without guessing.
Built for Real Installs and Real Bass Control
This amplifier is also packed with tuning tools that make real-world setups way easier to dial in. Adjustable crossovers, variable infrasonic filtering, and Punch EQ bass boost give you full control over how your system responds, from tight mids to deep, controlled bass. The included remote sub level control lets you adjust bass on the fly from the driver's seat, while auto turn-on support and multiple input options make installation flexible in almost any vehicle.
Frequently Asked Questions (FAQ)
- • Why does the amplifier have no power?
Check the fuse, battery connection, ground, and power cable. Loose terminals or a poor ground can prevent the amplifier from turning on properly.
- • Why does it keep going into protection?
Check for shorted speaker wires, incorrect impedance, overheating, or weak power connections. Make sure the speaker load is within its limits.
- • Why does the sound cut out at high volume?
Low voltage, overheating, excessive gain, or an unsuitable speaker load can cause shutdowns. Check the power supply and amplifier settings carefully.
- • Why do I hear a whining noise through the speakers?
Whining is often caused by grounding or signal interference. Check the ground connection and keep signal cables separated from power wiring.
- • Why is one channel not producing sound?
Check the RCA inputs, speaker wiring, gain controls, and source output. Swap channels to see whether the problem follows the input or speaker.
- • Why does it get very hot during use?
Some heat is normal, but excessive temperature may indicate poor ventilation, high output, or an incorrect load. Allow adequate airflow around the unit.
- • Can I run my entire system from this amplifier?
Yes, a five-channel design can power multiple speakers and a subwoofer. Match the speaker impedance and power requirements to each channel.
- • Why does the audio sound distorted?
Distortion can come from excessive gain, clipping, or an unsuitable speaker load. Lower the gain and check the source and amplifier settings.
- • Why does the subwoofer sound too quiet?
Check the subwoofer gain, crossover, RCA signal, and speaker wiring. Incorrect settings or a weak input signal can reduce bass output.
- • What should I check if it suddenly stops working?
Inspect the fuse, power, ground, speaker wiring, and signal connections. Look for loose or damaged cables and check the protection indicator.
- Number of Channels : 5
- Frequency Response : 20-20000 Hz
- Amplifier Class : D
- Fuse Rating : 120 A
Features:
- All-in-One 5-Channel Full Range Power Design: Integrates front, rear, and dedicated subwoofer amplification into a single Class D chassis, delivering a complete system solution with flexible 5-channel, 4-channel, or 3-channel configurations for versatile audio builds.
- CEA-2006 Certified Performance Standards: Tested under standardized conditions to ensure accurate RMS power and signal-to-noise ratings, allowing reliable comparison of amplifier performance across different systems and brands.
- Flexible Power Output Across All Channels: Delivers 50W x 4 RMS at 4Ω for full range channels with up to 200W x 2 bridged, plus a dedicated sub channel delivering up to 350W RMS at 2Ω for strong low-frequency performance.
- Advanced Class D Efficiency Architecture: Engineered for high output with reduced heat generation, allowing compact design efficiency while maintaining consistent audio performance under demanding conditions.
- Independent Front Rear and Sub Channel Control: Separate gain, crossover, and frequency adjustments for each section allow precise tuning of sound staging, balance, and subwoofer response.
- Adjustable Active Crossover System: 12dB per octave Butterworth crossovers with selectable high-pass, low-pass, and full-range modes provide accurate frequency separation for clean system integration.
- Variable Infrasonic Filter Protection: Subwoofer channel includes 15Hz to 40Hz adjustable infrasonic filtering to eliminate ultra-low frequencies that can distort output or damage subwoofer components.
- Punch EQ Bass Enhancement Control: Dedicated subwoofer EQ delivers up to 18dB of bass boost centered at 45Hz for deeper, more impactful low-frequency performance.
- Remote Sub Level Control Convenience: Included wired controller allows real-time adjustment of subwoofer output from the driver’s seat for quick tuning on the fly.
- Auto Turn-On Signal Detection: Smart activation system enables amplifier startup via speaker-level signal detection or traditional remote turn-on wiring depending on installation setup.
- Heavy Duty Power and Ground Connectivity: Nickel plated 4-gauge compatible terminals with secure set-screw design ensure stable power delivery and long-term installation reliability.
- Dedicated RCA and Speaker Level Inputs: Multiple input options with balanced differential RCA design and speaker-level harness compatibility support OEM and aftermarket integration.
- Flexible Mounting Orientation Design: Supports vertical horizontal or inverted installation with optimized cooling performance when mounted in horizontal position for thermal stability.
Specifications:
- CTA-2006 Compliant
- Number of Channels: 5
- Total Power (Sum of Rated Power): 750 Watts
- Rated Power (RMS Continuous Power)
- 50 Watts x 4 + 200 Watts x 1 @ 4Ω\
- 100 Watts x 4 + 350 Watts x 1 @ 2Ω
- 200 Watts x 2 + N/A @ 4Ω Bridged/Mono
- Dynamic Power (PVC/PowerCube®)
- 70 Watts x 4 + 241 Watts x 1 @ 4Ω
- 114 Watts x 4 + 426 Watts x 1 @ 2Ω
- 234 Watts x 2 + N/A @ 4Ω Bridged/Mono
- Bridgeable: Yes
- Frequency Response: 20 Hz - 20 kHz
- Input Sensitivity
- Low-Level: 150 mV - 4 V
- High-Level: 450 mV - 12 V
- Circuit Topology Class: Class-D
- Total Harmonic Distortion (THD+Noise)
- Front/Rear 4Ω: <1.0%
- Front/Rear 2Ω: <1.0%
- Sub 4Ω: <1.0%
- Sub 2Ω: <1.0%
- Signal Input
- Front Low-Level: 2 RCA
- Front High-Level: 4-Pin Molex
- Rear Low-Level: 2 RCA
- Rear High-Level: 4-Pin Molex
- Sub Low-Level: 2 RCA
- Sub High-Level: 4-Pin Molex
- Input Switch: 2/4/5 Input (works for RCA/Hi-Level inputs)
- Signal Output: N/A
- Tone Controls: 0 to +18 dB @ 45 Hz
- Crossover Controls
- Remote Controls: Yes
- Power/Protect
- C.L.E.A.N. In
- C.L.E.A.N. Out (front)
- C.L.E.A.N. Out (rear)
- C.L.E.A.N. Out (sub)
- Power Wire Gauge: 4 AWG
- Power Input Connector: Compression Terminal Block
- Speaker Wire Gauge: 8 AWG
- Speaker Output Connector: Compression Terminal Block
- Cooling: Convection
- Operating Voltage: 9 - 16 VDC
- Recommended Fuse (not included): 120 A
- Average Current Draw (13.8V Music)
- Max. Current Draw (13.8V Sinewave): 71 A
- Dimensions (H x W x D)
- 1.9" x 6.8" x 11.2" (4.9 cm x 17.3 cm x 28.5 cm)
- UPC: 780687355845
- Weight: 8
- Authorized Internet Dealer
Warranty: 2 Year(s) Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for replacement within 2 Year(s) from the original date of purchase with proper return authorization.
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The CLEAN feature is a really a huge help to get the best audio possible from the amp and the speakers. I’m still waiting for the sub, so I can’t talk about the lows coming from the amp yet, But with the speakers, they really sound better now since I got this amp as an upgrade
