1.888.955.6000
 
 
1-888-955-6000
crutchfield.com
Crutchfield

MTX Road Thunder RT604

4-channel car amplifier — 60 watts RMS x 4

Zoom
  • MTX Road Thunder RT604

    Front

  • MTX Road Thunder RT604

  • MTX Road Thunder RT604

Crutchfield OMC logo
We don't check this item for fit or compatibility.
Item# 236RT604
 

Review Summary

DISCONTINUED
 
This item is no longer available to purchase.
 
Contact us for other options
 
Call   Email   Chat
 
 
 
 
 

Our take on the MTX Road Thunder RT604

by Buck Pomerantz
MTX

My system has plenty of power. Who needs an amp?

You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.

An MTX Road Thunder amp puts your music up front and in your face — in a great way. You won't stop smiling when you finally hear all the musical details and and feel the awesome bass that your old system just couldn't reproduce.

4-channel workhorse
The RT604 4-channel amp will get your whole car rockin' with 60 watts RMS to each of your front and rear speakers. Or, if you choose, you can switch the amp over to 2-channel mode to drive a pair of subs with 180 watts RMS each. You'll find the built-in high- and low-pass filters useful in matching the amp to your particular speakers or subs.

Reliable performance
When the beat gets hot during heavy play, this amp's inner works stay cool by shedding heat efficiently through a tough, extruded aluminum top cover and heatsink assembly. This Road Thunder amp features speaker-level inputs, which come in handy if you're hooking it up to a factory radio.

Highlights:

  • 4-channel car amplifier
  • 60 watts RMS x 4 at 4 ohms (90 watts RMS x 4 at 2 ohms)
  • 180 watts RMS x 2 bridged (4-ohm stable in bridged mode)
  • CEA-2006 compliant
  • frequency response: 20-30K Hz
  • Class AB amp technology
  • variable high- and low-pass filters (40-400 Hz, 12 dB/octave)
  • preamp and speaker-level inputs
  • fuse rating: 30A x 2
  • 8-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 14-3/8"W x 2-1/8"H x 7-1/8"D
  • warranty: 5 years (free repair or replacement for 2 years; prorated replacement for years 3 through 5)
  • Our 60-day money-back guarantee
 

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
Performance
RMS Power Output (Watts x Channels)
Loading...
60 x 4
Peak Power Output (Watts x Channels)
Loading...
N/A
Power at 2 Ohms (Watts x Channels)
Loading...
90 x 4
Bridged Power (Watts x Channels)
Loading...
180 x 2
Minimum Impedance Bridged
Loading...
4
Minimum Impedance Unbridged
Loading...
2
Best Frequency Response
Loading...
20-30k Hz
THD at Rated RMS Power
Loading...
1%
Signal to Noise Ratio
Loading...
80 dB
Input Voltage
Loading...
14.4v
Features
Amplifier Class
Loading...
AB
Low-Pass Crossover Frequency
Loading...
40-400 Hz
Low-Pass Slope (dB/octave)
Loading...
12 dB/oct
High-Pass Crossover Frequency
Loading...
40-400 Hz
High-Pass Slope (dB/octave)
Loading...
12 dB/oct
Bass Boost
Loading...
No
Bass Boost Frequency
Loading...
N/A
Fan Cooled
Loading...
No
Fuse Rating
Loading...
60
Speaker Level Inputs
Loading...
Harness
Preamp Outputs
Loading...
No
Width (inches)
Loading...
14-3/8
Height (inches)
Loading...
2-1/8
Depth (inches)
Loading...
7-1/8
Parts Warranty
Loading...
5 Years (3-5 Prorated)
Labor Warranty
Loading...
5 Years (3-5 Prorated)
Product Research
What's in the box?

Download owner's manual

  • 4-Channel amplifier
  • Four 30A ATO fuses (two installed)
  • Two 11" Speaker level input harnesses
  • Four 3/4" Self-tapping screws
  • 4 Flat washers
  • 3mm Allen wrench
  • 2.5mm Allen wrench
  • Instruction manual (English/ French/ Spanish/ German/ Italian/ Portuguese/ Dutch/ Russian/ Finnish/ Polish)

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Features
Controls
Connections
Warranty

Features

CEA-2006 Compliant: CEA-2006 is a system of testing and measurement methods for mobile audio amplifiers. This voluntary standard advocates a uniform method for determining an amplifier's RMS power output and signal-to-noise ratio. The criteria for measuring power uses a DC input voltage of 14.4 volts and the RMS power output is measured into a 4-ohm load, with 1% or less Total Harmonic Distortion plus noise (THD+N), and at a frequency range of 20 Hz to 20,000 Hz when applicable. Signal-to-Noise ratio is measured in weighted absolute decibels (dBA) at a reference of 1 watt into 4-ohms. CEA-2006 allows consumers to compare car amplifiers and receivers on an equal basis. The MTX Road Thunder RT604 under CEA-2006 regulations is rated at 60 watts RMS x 4 channels with an 80 dBA signal to noise ratio.

2-Ohm Stable: The RT604 is capable of handling load impedances down to 2-ohms in stereo; the amplifier is rated at 90 watts RMS x 4 channels into 2-ohms with no more than 1% THD+N.

Bridgeable: The front and rear sections of the amp are independently bridgeable; the bridged output is 180 watts x 2 channels at 4-ohms (or 180 watts x 1 and 60 watts x 2 if only one half of the amp is bridged).

Protection Circuits: The RT604 provides Thermal and Short-circuit protection.

Controls

Gain: The front and rear sections of the amp have independent gain controls. Each rotary knob is continuously variable from 100 mV to 6 V.

Crossovers: The crossovers are also independent for the front and rear amplifiers:

  • Mode: front and rear 3 position switches; High Pass, Low Pass, Full Range
  • High Pass: front and rear rotary controls; 40 Hz to 400 Hz
  • Low Pass: front and rear rotary controls; 40 Hz to 400 Hz

Connections

Power/Ground/Turn-On Connections: The RT604 features set-screw terminals for the Power, Ground and Remote turn-on leads. The Power and Ground terminals will accommodate up to 4 gauge wire, the Remote turn-on terminal will accept up to 8 gauge wire.

Speaker Connections: The amplifier is equipped with four set-screw speaker terminals. The terminals will accommodate up to 8 gauge speaker wire.

Line Level Inputs: MTX recommends using the front and rear RCA type line-level inputs if possible.

Speaker Level Input: Use the included front and rear speaker level input harnesses if the connected radio has no preamp outputs.

Fuse: The amplifier is equipped with two ATO type 30 amp fuses; they're located under a cap on the bottom panel.

Warranty

5 Year Warranty Terms: This product carries a 5-Year Prorated Warranty with the following terms:

  • Years 1-2: Products found to be defective in materials or workmanship during the first two years will be, at Mitek's option, repaired or replaced by Mitek at no charge. The warranty period does not renew, but continues on from the original date of purchase.
  • Years 3-5: The purchase price of an item which becomes defective after the first two years and prior to the end of the warranty period will be prorated and credited toward the purchase of a new MTX product. The amount of proration is determined by dividing the original purchase price by the number of months in the warranty period (60), then multiplying the result by the number of months remaining in the warranty period.
 
Review this product
Great Gear Giveaway rewards card

Submit a review and you will be entered to win a $150 gift card

Crutchfield Great Gear Giveaway Official Sweepstakes Rules

MTX Road Thunder RT604 Reviews

Average Customer Review:

1 people say:

Review this product:

Thanks for taking the time to share your experiences about this product. Please be sure to focus your comments on the product itself. Read our Review Guidelines for more information.

Your email won't be visible. Please use the email address that is associated with your order.
(e.g., JohnD) Your review will be signed using the display name and location
(e.g., Charlottesville, VA)

Click on a star to rate the overall product on a scale of 1-5
1500 characters left
Attach a YouTube Review
Crutchfield Video Review Guidelines
  • Only submit videos that you made or are authorized to use.
  • Do not submit videos that contain music, video or visuals that are copyrighted and belong to someone else.
  • Please see our Review Guidelines for more information.
500 characters left
500 characters left
Filter by rating:
5 out of 5

MTX Road Thunder RT604

Written By MTX Road Thunder RT604, Queens, NY on Tuesday, April 23, 2013
Crutchfield Customer Review (What's this?)
 
Great amp, gets warm though
Pros:
setup was easy great sound and power priced right
Cons:
gets hot need a set of Allan keys to setup amp.
Was this review helpful?    Yes | No
 

Add accessories for the MTX Road Thunder RT604

You'll need an amp wiring kit to install your new amplifier, as wiring is not included. See all categories & accessories

T-Spec 8PK Installation Kit 8-gauge amplifier wiring kit — includes speaker wire
5 people say
Your Price: $59.99
Add to Cart
Kicker PK8 8-gauge amplifier power wiring kit
Your Price: $79.99
Add to Cart
Rockford Fosgate RFK8i 8-gauge amplifier power and signal wiring kit
27 people say
Your Price: $74.99
Add to Cart
Rockford Fosgate RFK8 8-gauge amplifier power wiring kit
4 people say
Your Price: $64.99
Add to Cart
EFX 8-gauge Amplifier Wiring Kit Power and signal connections for your new amp
150 people say
Your Price: $49.99
Add to Cart
T-Spec 16-gauge Speaker Wire Black/white jacket — priced per foot
9 people say
Your Price: $0.69
Add to Cart
T-Spec 12-gauge Speaker Wire Black/white jacket — priced per foot
17 people say
Your Price: $1.99
Add to Cart
Stinger PRO Series 16-gauge Speaker Wire Black jacket — priced per foot
37 people say
Your Price: $0.39
Add to Cart
T-Spec 2-Channel RCA Patch Cables Available in 7 different lengths (20-foot)
14 people say
Your Price: $20.99
Add to Cart
5 people say
Your Price: $29.99
Add to Cart
44 people say
Your Price: $9.99
Add to Cart
T-Spec Capacitor 1.5-farad capacitor with red LCD meter
4 people say
Your Price: $79.99
Add to Cart
Bojo Trim Panel Tools Set of 6 pry tools — helps remove interior and exterior trim and door panels
42 people say
Your Price: $24.99
Add to Cart
Pro.Fit Wire Worm Installation tool helps route wiring through tight spaces
25 people say
Your Price: $12.99
Add to Cart
Metra Crimp Tool and Connectors Package contains crimp tool and over 150 pieces
10 people say
Your Price: $19.99
Add to Cart
S&G Wire Cutter/Stripper Tool Cuts and strips 12- to 22-gauge wire
12 people say
Your Price: $19.99
Add to Cart
S&G Tool Aid 87650 Door Trim and Panel Removal Tool
64 people say
Your Price: $9.99
Add to Cart
Skewdriver Pro SPK4042 Ratcheting straight and offset screwdriver set with 40 bits (Skewdriver Pro with ratchet handle, pictured)
7 people say
Your Price: $49.99
Add to Cart
Bojo Trim Panel Tools Set of 6 pry tools — helps remove interior and exterior trim and door panels
1 person says
Your Price: $29.99
Add to Cart
DEI Heat Shrink Tubing Black 4-foot length (Assortment)
4 people say
Your Price: $24.99
Add to Cart
Your Price: $69.95
Add to Cart

Why choose SquareTrade?

The #1-Rated Protection Plan

Thousands of people have reviewed SquareTrade Protection Plans — and made us #1.

5-Day Service Guarantee & Free Shipping

We'll repair or replace your item in five business days or less after we've received it, or your plan is free. And, as always, we pay for all shipping.

Protection from Normal, Everyday Use

Repairing your average mechanical or electrical failure can cost as much as buying a new device. With SquareTrade, you're covered — including parts and labor.

3 Year Protection Plan
3 Year Protection Plan
Your Price: $26.99
Add to Cart

For a more in-depth review and enhanced detailed information on the MTX Road Thunder RT604, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_236RT604/MTX-Road-Thunder-RT604.html ).

Get live, personalized service from an expert

Crutchfield Advisor: Hi there.

Crutchfield Advisor: We're happy to answer questions or provide additional info about this item.

Advisors also available at 1-888-600-3963