Rockford Fosgate T800-4adPower 800 Watt Class-ad Full-Range 4-Channel Amplifier
The Power T800-4ad is a 4-channel amplifier that combines the sound quality characteristics of a Class-A design with the efficiency of a Class-D in one remarkable package, offering high fidelity in a full-range configuration. • This model replaced by the T1000-4ad
Highlights
- 2-Year Warranty
- 24dB/octave crossover
- MOSFET power supply
- 2/4 channel input switch
Key specs
Full specs- Number of Channels
- 4
- Total Power (Sum of Rated Power)
- 800 Watts RMS
- Rated Power (RMS Continuous Power)
- 150 Watts x 4 @ 4-Ohm 150 Watts x 4 @ 2-Ohm 200 Watts x 4 @ 1-Ohm 300 Watts x 2 @ 4-Ohm Bridged 400 Watts x 2 @ 2-Ohm Bridged
- Dynamic Power (PVC/PowerCube®)
- 177 Watts x 4 @ 4-Ohm 0° Res 219 Watts x 4 @ 2-Ohm 0° Res 235 Watts x 4 @ 1-Ohm 0° Res 350 Watts x 2 @ 4-Ohm Bridged 410 Watts x 2 @ 2-Ohm Bridged
- Bridgeable
- Yes
- Frequency Response
- 20Hz to 20kHz +/-1dB
- Input Sensitivity
- 150 mV to 4 V
- Circuit Topology Class
- Class AD
Key specs
Full specs- Number of Channels
- 4
- Total Power (Sum of Rated Power)
- 800 Watts RMS
- Rated Power (RMS Continuous Power)
- 150 Watts x 4 @ 4-Ohm 150 Watts x 4 @ 2-Ohm 200 Watts x 4 @ 1-Ohm 300 Watts x 2 @ 4-Ohm Bridged 400 Watts x 2 @ 2-Ohm Bridged
- Dynamic Power (PVC/PowerCube®)
- 177 Watts x 4 @ 4-Ohm 0° Res 219 Watts x 4 @ 2-Ohm 0° Res 235 Watts x 4 @ 1-Ohm 0° Res 350 Watts x 2 @ 4-Ohm Bridged 410 Watts x 2 @ 2-Ohm Bridged
Highlights
Overview- 2-Year Warranty
- 24dB/octave crossover
- MOSFET power supply
Overview
Key features
- 2-Year Warranty
- 24dB/octave crossover
- MOSFET power supply
- 2/4 channel input switch
- 4 Gauge power/ground connectors
- Audiophile grade speaker connections
- MOSFET output stage
- Punch EQ2
- Differential Inputs
- NOMAD
- MEHSA3
- CTA-2006 Compliant
More info
The T800-4ad combines sound quality characteristics of Class-A designs with efficiency of a Class-D in one remarkable package. Superior sound quality is possible through the implementation dynamic switching frequency control. The addition of Constant Power circuitry produces optimized output at a range of impedances. Rockford Fosgate created Class-bd for brute power to run low frequency subwoofers, and now Class-ad offers high fidelity in a full-range configuration.
Technologies

Punch EQ2
In the early 70's, Jim Fosgate studied the acoustical properties of automobiles. Utilizing a real-time analyzer
Differential Inputs
Differential input circuitry measures the voltage of both the (+) and (-) input signal. The circuitry subtracts
NOMAD
NOMAD is a "real time" analog computer that protects your amplifier from shorting speaker wires and ...

MEHSA3
MEHSA3 reduces MOSFET temperatures, lowers distortion, increases durability and prolongs the output device life

CTA-2006 Compliant
Power ratings on Rockford Fosgate amplifiers conform to CTA-2006 industry standards. These guidelines mean your
DSM
DSM - An industry-leading manufacturing process, DSM utilizes high-speed robotics, high-quality 1% tight-tolerance
Engineered In The USA
[av• uh•tahr -noun] 1. an embodiment or personification, as of a principle, attitude, or view of life 2. a

Constant Power
Music and speakers have a dynamic relationship. As the frequency of music varies, so does the impedance of the

Class-AD
Rockford Fosgate's AD topology brings out high efficiency bd amplifier design to a full range application.
Specs
Specifications
| Number of Channels | 4 |
| Total Power (Sum of Rated Power) | 800 Watts RMS |
| Rated Power (RMS Continuous Power) | 150 Watts x 4 @ 4-Ohm 150 Watts x 4 @ 2-Ohm 200 Watts x 4 @ 1-Ohm 300 Watts x 2 @ 4-Ohm Bridged 400 Watts x 2 @ 2-Ohm Bridged |
| Dynamic Power (PVC/PowerCube®) | 177 Watts x 4 @ 4-Ohm 0° Res 219 Watts x 4 @ 2-Ohm 0° Res 235 Watts x 4 @ 1-Ohm 0° Res 350 Watts x 2 @ 4-Ohm Bridged 410 Watts x 2 @ 2-Ohm Bridged |
| Bridgeable | Yes |
| Frequency Response | 20Hz to 20kHz +/-1dB |
| Input Sensitivity | 150 mV to 4 V |
| Circuit Topology Class | Class AD |
| Efficiency (average) | 80% @ 4-Ohm 75% @ 2-Ohm 75% @ 1-Ohm |
| Total Harmonic Distortion (THD+Noise) | 4-Ohm: <1.0% 2-Ohm: <1.0% |
| Signal Input | Front Channels: 1 RCA pair Rear Channels:1 RCA pair |
| Signal Output | n/a |
| Tone Controls | Front Channels: Treble: 0dB to +12dB @ 12kHz Bass: 0dB to +18dB @ 45Hz Rear Channels: Treble: 0dB to +12dB @ 12kHz Bass: 0dB to +18dB @ 45Hz Function depends upon crossover setting (LP/AP/HP) |
| Crossover Controls | Front Channels: High-Pass (HP): 50Hz-500Hz @ 24dB/octave Butterworth Low-Pass (LP): 50Hz-500Hz @ 24dB/octave Butterworth Rear Channels: High-Pass (HP): 50Hz-500Hz @ 24dB/octave Butterworth Low-Pass (LP): 50Hz-500Hz @ 24dB/octave Butterworth |
| Remote Controls | Optional Remote PEQ (overrides rear channel built-in Punch EQ) |
| Visual Indicators | Power (Blue LED) Thermal (Red LED) Protect (Yellow LED) |
| Power Wire Gauge | 4 AWG |
| Power Input Connector | Block |
| Speaker Wire Gauge | 8 AWG to 16 AWG |
| Speaker Output Connector | Block |
| Cooling | Convection |
| Operating Voltage | 9 - 16 VDC |
| Recommended Fuse (not included) | 100 A |
| Average Current Draw (13.8V Music) | 40 A |
| Max. Current Draw (13.8V Sinewave) | 80 A |
| Suggested Alternator | 75 A |
| Dimensions (H x W x D) | 2.14 x 8.14 x 13.66 (in) 5.42 x 20.68 x 34.69 (cm) |
| Shipping Weight | 13.2 Lbs. (5.98 Kg.) |
Reviews (0)
—
No average rating yet
No written reviews are live yet. Signed-in customers can submit one below.
No written reviews are live for this item yet.
Installation resources
Wiring diagrams
Support
Return Authorization
If you bought this product from Onkar Electronics, use the Contact Us page on the Onkar Electronics website and we will help with return authorization and warranty support. If you purchased it from another dealer, contact that authorized dealer first for return assistance.
Popular Questions
No FAQs available











