T800-4ad

Power 800 Watt Class-ad Full-Range 4-Channel Amplifier T800-4ad

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.

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Discontinued
Overview

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.

  • 2/4 channel input switch
  • 24dB/octave crossover
  • 4 Gauge power/ground connectors
  • Audiophile grade speaker connections
  • MOSFET power supply
  • MOSFET output stage
  • 2 Year Warranty
Technologies
CEA-2006 Compliant
CEA-2006 Compliant

Power ratings on Rockford Fosgate amplifiers conform to CEA-2006 industry standards. These guidelines mean your amplifier's ...

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CEA-2006 Compliant
CEA-2006 Compliant

Power ratings on Rockford Fosgate amplifiers conform to CEA-2006 industry standards. These guidelines mean your amplifier's output power ratings are REAL POWER numbers, not inflated marketing ratings.

Class AD
Class AD

This technology allows the amplifier to produce more power with less current draw from the vehicle's ...

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Class AD
Class AD

This technology allows the amplifier to produce more power with less current draw from the vehicle's charging system.

Constant Power
Constant Power

Constant Power is a patented circuit topology that provides instantaneous delivery of output power over varying ...

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Constant Power
Constant Power

Constant Power is a patented circuit topology that provides instantaneous delivery of output power over varying impedance loads.

Punch EQ2
Punch EQ2

Onboard equalizer with up to +18dB @ 45Hz and/or up to +12dB boost at 12kHz.

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Punch EQ2
Punch EQ2

Onboard equalizer with up to +18dB @ 45Hz and/or up to +12dB boost at 12kHz.

DSM
DSM

DSM utilize 1% tight-tolerances improving efficiency of the circuit, decreases cross-talk from other discrete components and ...

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DSM
DSM

DSM utilize 1% tight-tolerances improving efficiency of the circuit, decreases cross-talk from other discrete components and lowers operating temperature.

MEHSA<sup>3</sup>
MEHSA3

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

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MEHSA<sup>3</sup>
MEHSA3

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

NOMAD
NOMAD

NOMAD is a "real time" analog computer that protects your amplifier from shorting speaker wires and ...

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NOMAD
NOMAD

NOMAD is a "real time" analog computer that protects your amplifier from shorting speaker wires and dangerously low speaker impedances.

Balanced Differential Inputs
Balanced Differential Inputs

Differential inputs eliminate noise picked up by signal cables.

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Balanced Differential Inputs
Balanced Differential Inputs

Differential inputs eliminate noise picked up by signal cables.

Engineered In The USA
Engineered In The USA

These Avatars are a personal signature from the Rockford Fosgate team member(s) who designed and engineered ...

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Engineered In The USA
Engineered In The USA

These Avatars are a personal signature from the Rockford Fosgate team member(s) who designed and engineered this fanatic product. This statement illustrates our commitment to being Designed and Engineered in the U.S.A.

Specifications
Recommended Fuse
(not included)
100 A
Average Current Draw (13.8V Music)
40 A
Total Harmonic Distortion (THD+Noise)
4-Ohm: <1.0%
2-Ohm: <1.0%
Efficiency (average)
80% @ 4-Ohm
75% @ 2-Ohm
75% @ 1-Ohm
Frequency Response
20Hz to 20kHz +/-1dB
Operating Voltage
9 - 16 VDC
Suggested Alternator
75 A
Input Sensitivity
150 mV to 4 V
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
Number of Channels
4
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
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)
Power Input Connector
Block
Speaker Wire Gauge
8 AWG to 16 AWG
Visual Indicators
Power (Blue LED)
Thermal (Red LED)
Protect (Yellow LED)
Bridgeable
Yes
Average Current Draw (13.8V Music)
40 A
Total Harmonic Distortion (THD+Noise)
4-Ohm: <1.0%
2-Ohm: <1.0%
Efficiency (average)
80% @ 4-Ohm
75% @ 2-Ohm
75% @ 1-Ohm
Frequency Response
20Hz to 20kHz +/-1dB
Operating Voltage
9 - 16 VDC
Suggested Alternator
75 A
Input Sensitivity
150 mV to 4 V
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
Number of Channels
4
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
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)
Power Input Connector
Block
Speaker Wire Gauge
8 AWG to 16 AWG
Visual Indicators
Power (Blue LED)
Thermal (Red LED)
Protect (Yellow LED)
Circuit Topology Class
Class AD
Support

Return Authorization

Contact the Authorized Rockford Fosgate Dealer you purchased this product from. If you need further assistance, call 1-800-669-9899 for Rockford Customer Service. You must obtain an RA# (Return Authorization number) to return any product to Rockford Fosgate. You are responsible for shipment of product to Rockford.


View Process

Accessories Wiring Wizard

Available Wiring Diagrams

Please consult your amplifier owner's manual for lowest recommended impedance.











































Speaker Polarity

Your woofer may use one of the following to identify (+/-) terminals.

Positive +

Red Post

Purple (4Ω)

Red (8Ω)

Negative -

Black Post

No Dot

No Dot

Speaker Polarity

Your woofer may use one of the following to identify (+/-) terminals.

Positive +

Red Post

Purple (4Ω)

Red (8Ω)

Negative -

Black Post

No Dot

No Dot

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