Rockford Fosgate Power T400-4 400 watt multi channel amplifier

by Rockford Fosgate

Product Details

• Product Dimensions: 13.7 x 8.1 x 2.1 inches ; 8 pounds
• Shipping Weight: 21 pounds (View shipping rates and policies)
• Shipping: Currently, item can be shipped only within the U.S.
• ASIN: B0012Q9976
• Item model number: T400-4
• Average Customer Review: 4.7 out of 5 stars  See all reviews (7 customer reviews)
• Amazon Best Sellers Rank: #8,162 in Electronics (See Top 100 in Electronics)

Product Description

Amazon.com Product Description

The T400-4 amplifier is perfect for front/rear fading stereo systems or when dedicated amplification is required between front stage speakers and rear subwoofer(s). Thanks to the Dynamic Thermal Management, the small chassis design ensures it can be installed in any location--like under front seats.

Rockford Fosgate Power Series Amplifiers Power > Size. These compact amps deliver the same gut wrenching power as its big brother, but their chassis designs are up to 40% smaller. DTM (Dynamic Thermal Management) allows efficient heat transfer that minimizes physical size and enables installs under seats and other compact areas when abundant power is required.

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400 Watt 4-Channel Amplifier. Click to enlarge.

Perfect for front/rear fading stereo systems or when dedicated amplification is required between front stage speakers and rear subwoofer(s). Click to enlarge.

Small chassis designs with serious power. Click to enlarge.

T400-4 Features

• 2/4 channel switch
• 24dB/octave crossover
• 4 Gauge power/ground terminals
• Audiophile grade speaker connections
• MOSFET output stage
• MOSFET power supply

CEA-2006
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.

Differential Inputs
Differential input circuitry measures the voltage of both the (+) and (-) input signal. The circuitry subtracts the voltage common to both conductors (noise) resulting in only the clean signal. This allows only clean signal to enter the amplifier.

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

Dynamic Thermal Management
Heat is often inefficiently dissipated across a heatsink causing "hot spots". Rockford Fosgate engineers have developed an award winning cooling design called DTM. This patent pending design seamlessly manages the output of power supply temperatures, while evenly distributing the excess heat across the entire amplifier.

MEHSA³
MEHSA³ (Maximum Efficiency Heat Sink Application--gen. 3) reduces MOSFET temperatures, lowers distortion, increases durability and prolongs the output device life span.

NOMAD
NOMAD (Non Multiplying Advanced Decision) is a "real time" analog computer that protects your amplifier from shorting speaker wires and dangerously low speaker impedances.

Punch EQ2
In the early 70's, Jim Fosgate studied the acoustical properties of automobiles. Utilizing a real-time analyzer and pink noise, he would graph out the acoustical characteristics of each car he tested. Jim discovered three problems that were common to all cars: a midbass hump between 100-275Hz, a steep roll-off of high frequencies from 2kHz up to 20kHz, and reduced bass response below 50Hz.

The Punch EQ on-board equalization circuit helps correct for these acoustical deficiencies in the listening environment. When set to Low-Pass(LP) operation, it becomes a variable Bass Boost. When set to High-Pass (HP) operation, it acts as a variable Mid-Bass and Treble Boost. When set to All Pass (AP) operation, both Bass and Treble frequencies are boosted.

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

TO-247 MOSFETs
Rockford Fosgate amps use custom TO-247 MOSFETs. These have 60% more metal tab area for more power capacity, lower impedance and improved heat dissipation over traditional TO-220 MOSFETs found in competitor amps.

TRANS·ana
Trans·ana (TRANS conductance Active Nodal Amplifier) simplifies the signal path of the amplifier allowing the signal to travel through the amplifier at a lower voltage. The result is greater reliability and exceptional sound quality.

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T400-4 Specifications

Number of Channels:	4
Rated Power:	60W x 4 @ 4-Ohms RMS 100W x 4 @ 2-Ohms RMS 200W x 2 @ 4-Ohms bridged RMS 2-Ohms x 2 bridged Stable
Total Power:	400 Watts
Dynamic Power:	Front Channels 90 Watts x 2 @ 4-Ohms 0 degrees Res 154 Watts x 2 @ 2-Ohms 0 degrees Res Rear Channels 90 Watts x 2 @ 4-Ohms 0 degrees Res 154 Watts x 2 @ 2-Ohms 0 degrees Res
Bridgeable:	Yes
Efficiency (average):	69% @ 4-Ohm 68% @ 2-Ohm
Crossover Controls:	Front High-Pass (HP): 50-500Hz 24dB/octave Butterworth Front Low-Pass (LP): 50-500Hz 24dB/octave Butterworth Rear High-Pass (HP): 50-500Hz 24dB/octave Butterworth Rear Low-Pass (LP): 50-500Hz 24dB/octave Butterworth
Tone Controls:	Front Channels - Punch EQ Treble: 0dB to +12dB @ 12kHz Bass: 0dB to +18dB @ 45Hz Rear Channels - Punch EQ Treble: 0dB to +12dB @ 12kHz Bass: 0dB to +18dB @ 45Hz
Signal Input:	Front Low level: 1 RCA pair Rear Low level: 1 RCA pair
Signal Output:	n/a
Power Input Connector:	Block
Power Wire Gauge:	4 AWG
Speaker Output Connector:	Screw terminal barrier strip
Speaker Wire Gauge:	8 AWG to 18 AWG
Heat Sink Type:	Cast aluminum
Cooling:	Convection
Remote Controls:	Optional Remote Punch EQ (overrides built-in Punch EQ)
Visual Indicators:	Power Thermal Protect
Circuit Topology Class:	Class A/B
Frequency Response:	20Hz to 20kHz +/- 1dB
Shipping Weight:	11.90 Lbs. (5.39 Kg.)
Dimensions (HxWxL):	2.14 x 8.14 x 13.66 (in) 5.42 x 20.68 x 34.69 (cm)

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Thirty Years of Rockford Fosgate

Rockford Fosgate products have been designed and engineered in Tempe, Arizona since the beginning. Rockford's 30 year reputation is grounded in engineering and manufacturing some of the finest audio products in the world. The company's no-compromise approach has yielded patented iconic products such as the Punch EQ, Punch 45 amplifier and the 3Sixty integrated signal processor. Today, Rockford's new products push the performance envelope even further. Each new product is a step forward--they sound bigger, they play louder, and run longer. Rockford never settles for "good enough."

The 2010 product line represents the company's core philosophy. Rockfords new amplifiers, speakers and subwoofers have raised the bar on the competition.

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What's in the Box

Rockford Fosgate Power T400-4 400-watt multi-channel amplifier, Mounting Hardware, User's Manual

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On a Tighter Budget?

For those seeking a more affordable multi-channel amplification solution, Rockford offers the Punch Series P400-4 and the Prime Series R300-4.

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Power Series Multi-Channel Amplifiers

Rockford Fosgate offers a 600-watt model in addition to this 400-watt model.

Rockford Fosgate Power T600-4 600 watt multi channel amplifier	Rockford Fosgate Power T400-4 400 watt multi channel amplifier

Product Description

Rockford Fosgate Power T400-4 400 watt multi channel amplifier

Customer Reviews

Most Helpful Customer Reviews

3 of 3 people found the following review helpful:

5.0 out of 5 stars All the power you need! 4.8 rating overall, July 26, 2009

By 

alaskanseminole "alaskanseminole" (San Antonio, Texas) - See all my reviews

I upgraded my Punch P200 2-channel amp and I have zero regrets. In fact, I wish I had this amp all along! This is one STRONG Amplifier!! There is more power here than I need, that's for sure. I have the rear channels running in mono on 2 ohms and it pushes my Punch 10" sub to perfection. The front side is running in stereo on 4 ohms pushing four Fosgate 5X7s. The sound is super clean and LOUD!

Only Con: While the amp is very stylish looking, it has no connector covers to conceal wiring like the P200-2. That would have made this amp a solid 5 star for me. Instead I'm giving it a 4.8.

Bottom Line: After 20 years of Fosgate loyalty I'm thoroughly impressed with this Amp!

3.0 out of 5 stars Its alright, February 10, 2012

By 

Jr from KC - See all my reviews

Amazon Verified Purchase

This review is from: Rockford Fosgate Power T400-4 400 watt multi channel amplifier (Electronics)

4 Channel amp is good just not what i expected... had then hooked up to 2 6.5 inch front door rockford fosgate speakers and 2 6x9 rear deck rockfordfosgate speakers. They sound good dont get me wrong but not what i expected for the price

5.0 out of 5 stars NOTHING COMPARES, January 17, 2012

By 

stizzle399 - See all my reviews

Amazon Verified Purchase

This review is from: Rockford Fosgate Power T400-4 400 watt multi channel amplifier (Electronics)

I have this amplifier running Infinity 609cs in the front of my car and Infinity 629I in the rear. This is the best sounding system i have ever heard. Easily beats out the Bose system in my Tahoe. These speakers pound with this amp. I would recommend getting a good cable such as: Monster Standard THX-Certified Speaker Cable, and a good amp kit such as: Kicker 09ZCK8 Z-Series. This amp never gets hot and is fully tunable. Defiantly worth the money!!!