Rockford Fosgate R2-500X4 4 Channel Amplifier- 75x4 @ 4-Ohm, 125x4 @ 2-Ohm, 250x2 @ 4-Ohm Bridged - Open Box

The R2 models were developed for car audio fanatics that want a reliable amplifier – with all the power and performance you’ve come to expect from Rockford Fosgate – at an economical price. Rockford Fosgate amplifiers are renowned world-wide for being “under rated,” easily surpassing all specifications, and most importantly, generating more power than their ratings. These 3rd generation of Prime Series amplifiers are refined with the latest Rockford Fosgate technology for easy setup and configuration, making them perfect for use with factory audio or custom aftermarket systems.

• Balanced Differential Inputs with RCA Pass Through Outputs
• High Level Input Capable
• Auto-Sense bypass switch for vehicles with RAP (Retained Accessory Power)
• Features C.L.E.A.N. Set-up
• 2/4 Channel Input Selection Switch
• Front and Rear Variable Input Gain adjustment level
• Top Mounted Control Panel
• Short Circuit & Over Current Protection
• CEA-2006 Compliant & CE Compliant
• Cast aluminum heat sink
• Full Range Class-D
• Rollback Protection
• Fully Adjustable 12 dB/octave High and Low pass Butterworth Crossovers
• 1 Year WarrantyBalanced Differential Inputs with RCA Pass Through Outputs
• High Level Input Capable
• Auto-Sense bypass switch for vehicles with RAP (Retained Accessory Power)
• Features C.L.E.A.N. Set-up
• 2/4 Channel Input Selection Switch
• Front and Rear Variable Input Gain adjustment level
• Top Mounted Control Panel
• Short Circuit & Over Current Protection
• CEA-2006 Compliant & CE Compliant
• Cast aluminum heat sink
• Full Range Class-D
• Rollback Protection
• Fully Adjustable 12 dB/octave High and Low pass Butterworth Crossovers
• 1 Year Warranty

General Specifications

CEA-2006 Compliant

CEA-2006 Power Rating
75W x 4 @ 4Ω
≤1.0% THD+N

Cta-2006 Compliant

Number of Channels

4

Total Power
(Sum of Rated Power)

500 Watts

Rated Power
(RMS Continuous Power)

75 Watts x 4 @ 4Ω
125 Watts x 4 @ 2Ω
250 Watts x 2 @ 4Ω Bridged/Mono

Dynamic Power
(PVC/PowerCube®)

90 Watts x 4 @ 4Ω
160 Watts x 4 @ 2Ω
300 Watts x 2 @ 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

Efficiency (average)

Total Harmonic Distortion (THD+Noise)

4Ω: <1.0%
2Ω: <1.0%

Signal Input

Front Low-Level: 4 RCA
Front High-Level: 4-Pin Molex
Rear Low-Level: 4 RCA
Rear High-Level: 4-Pin Molex

Input Switch: 2/4 Input
(works for RCA/hi-level inputs)

Signal Output

Low-Level: 2 RCA
(Pass-Thru active with RCA or Hi-Level input)

Tone Controls

No

Crossover Controls

Front High-Pass:
50 Hz - 250 Hz @ 12dB/Octave Butterworth

Front Low-Pass:
50 Hz - 250 Hz @ 12dB/Octave Butterworth

Rear High-Pass:
50 Hz - 250 Hz @ 12dB/Octave Butterworth

Rear Low-Pass:
50 Hz - 250 Hz @ 12dB/Octave Butterworth

All-Pass: Yes

Remote Controls

No

Visual Indicators

Power/Protect
C.L.E.A.N. In
C.L.E.A.N. Out (front)
C.L.E.A.N. Out (rear)

Power Wire Gauge

4 AWG

Power Input Connector

Compression Terminal Block

Speaker Wire Gauge

8 AWG

Speaker Output Connector

Compression Terminal Block

Cooling

Convection

Heatsink

Operating Voltage

9 - 16 VDC

Recommended Fuse
(not included)

80 A

Average Current Draw (13.8V Music)

Max. Current Draw (13.8V Sinewave)

59 A

Suggested Alternator

Dimensional Diagram

Dimensions (H x W x D)

1.9" x 6.8" x 10.1"
(4.9 cm x 17.3 cm x 25.5 cm)

Shipping Weight