RT604 - Car stereo MTX Audio - Free user manual and instructions

Product Type	4-Channel Class-AB Amplifier
Output Power (RMS)	4 x 90 W @ 2 Ω, 4 x 60 W @ 4 Ω, 2 x 180 W bridged @ 4 Ω
Frequency Response	20 Hz - 30 000 Hz (±1 dB)
Signal-to-Noise Ratio	> 80 dB (1 watt)
Distortion (THD+N)	≤ 1 % (1 watt)
Active Filters	High-Pass (HPF) and Low-Pass (LPF) 12 dB/oct, variable from 40 to 400 Hz
Input Sensitivity (RCA)	100 mV to 6 V
High-Level Inputs	Yes, with included adapters
Power Supply	12 V DC (vehicle battery)
Power Consumption	Not specified
Dimensions (L x W x H)	364 x 180 x 55 mm
Weight	Not specified
Built-in Protection	Thermal and short circuit (flashing red light)
Status Light	Solid red (power on), flashing red (protection)
Fuse	Internal, replace with fuse of same rating
Bridged Mode	Yes, minimum impedance 4 Ω
Installation	Flat mounting, good air circulation, disconnect battery before
Maintenance	Clean with a dry cloth, do not use chemical products
Brand	MTX Audio
Model	RT604
Category	Car audio amplifier

Frequently Asked Questions - RT604 MTX Audio

How to adjust the gain (sensitivity) of the amplifier?

Turn the GAIN potentiometer to minimum (counterclockwise). Set the source volume to 3/4 of maximum with a dynamic song. Increase the gain until you hear distortion, then reduce it by one notch.

What to do if the amplifier does not turn on?

Check that the REM connector receives +12V, that the +12V power is present, that the ground is good, and that the fuse is not blown. Replace the fuse if necessary.

How to connect speakers in bridged mode?

Use the right (+) and left (-) terminals (channels 1 and 2 or 3 and 4). The minimum impedance in bridged mode is 4 ohms. Do not go below.

What does the flashing red light mean?

The flashing red light indicates thermal protection or short circuit. Turn off the amplifier, let it cool down, check the connections, then turn it back on.

How to connect a source without RCA outputs?

Use the included high-level adapters. Connect the speaker wires from the source to the adapters, then insert these adapters into the HLI connector of the amplifier.

What is the minimum impedance of the speakers?

In stereo: 2 ohms per channel. In bridged mode: 4 ohms.

How to adjust the high-pass or low-pass filter?

Set the switch to HPF for high-pass or LPF for low-pass. Adjust the cutoff frequency (40 to 400 Hz) with the corresponding potentiometer. In the FULL position, no filter is active.

Can I use a fuse of a different rating?

No, always replace the fuse with one of the same rating. A higher-rated fuse may damage the amplifier or cause a fire.

How to get a good ground connection?

Scrape the vehicle's sheet metal (remove paint) for metal-to-metal contact. Use a screw and nut. The ground should be as short as possible and of the same gauge as the power cable (10 mm²).

What to do in case of distorted sound?

Lower the source volume, reduce the GAIN setting on the amplifier. Also check that the speakers are in phase and that the impedance is correct.

USER MANUAL RT604 MTX Audio

4-Channel Class-AB Power Amplifier

1080W MAX

Designed by MTX in the USA

www.mtxaudio.com

www.mtxaudio.eu

Introduction

Thank you for purchasing an MTX Audio Hi-Performance amplifier. Proper installation matched with MTX speakers and subwoofoers provide superior sound and performance for endless hours of waking the neighbors, slam-min' your friends or flat out stomping wanna-be players. Congrats and enjoy the ultimate audio experience with MTX!

Specifications :

4-Channel Class-AB Amplifier
- CEA2006 certified Power Output :

• 90 watts RMS x 4-channel at 2 ohm and THD+N ≤1%
• 60 watts RMS x 4-channel at 4 ohm and THD+N ≤1%
• 180 watts RMS x 2-channel at 4 ohm and THD+N ≤1%

Crossover:

• High pass 12dB/act variable from 40Hz to 400Hz
• Low pass 12dB/oct variable from 40Hz to 400Hz
• Signal-to-Noise Ratio (1 watt): >80dB
• THD+Noise (Distortion) (1 watt): ≤ 1%
  Frequency Response (± 1dB) : 20Hz - 30000Hz
  Maximum Input Signal : 6V
  Maximum Sensitivity: 100mV
• Dimensions : 364mm x 180mm x 55mm
  High level inputs

Control Panel

Control Panel :

Gain Control (GAIN): The gain control matches the input sensitivity of the amplifier to the source unit being used. The operating range varies from 100mv to 6V.

Adjusting the gain

1. Turn the gain control on the amplifier all the way down (counter clockwise).
2. Turn up the volume control on the source unit to approximately 3/4 of maximum.
3. Adjust the gain control on the amplifier until audible distortion occurs.
4. Adjust the gain control down until audible distortion disappears.
5. The amplifier is now calibrated to the output of the source unit.

2 Low-Pass High-Pass X-Over Switch (X-OVER):

In "LPF" position, the active low pass (LP) x-over is turned on In "HPF" position, the active high pass (HP) x-over is turned on In "FULL" position, the x-over is turned off

3 High Pass X-Over Frequency Control (HPF):

Used to select the desired high-pass (HP) x-over frequency. The frequency is adjustable from 40Hz to 400Hz..

4 Low Pass X-Over Frequency Control (LPF) :

Used to select the desired low-pass (LP) x-over frequency. The frequency is adjustable from 40Hz to 400Hz..

RCA Inputs (LOW INPUT): These RCA inputs are used with source units that have RCA or Line level outputs.

(Source units need a minimum level of 100mV output for proper operation of the amplifier).

MTX recommends only high quality twisted pair cables (such as StreetWires) to decrease the possibility of radiated noise entering the system.

PowerOn/Protection LED - The LED illuminates red when the amp is switched on. When the amps is in short circuit or thermal protection, the LED is blinking.

8 Speaker level inputs (HLI):

This input will allow the amplifier to operate from source units with speaker-level outputs. Output speaker leads from the source unit should be tied directly to the wire harness provided with the amplifier.

Note : When speaker level inputs are used, a remote turn on wire must used to switch the amplifier on and off.

(+12V) Power Terminal : This is the main power input for the amplifier and must be connected directly to the positive terminal of the vehicles battery for proper operation. Use caution when installing (+12) power cable in the vehicle. Avoid running this cable parallel with RCA cables, antennas, or other sensitive equipment due to massive currents that can induce noise into the audio system. It is also very important to have a tight, secure connection for maximum performance. MTX recommends using 10mm^2 power wire with the MTX RT60.4 amplifier.

Remote Terminal (REM) : The amplifier can be turned on by applying 12 volts to this terminal. Typically this voltage is supplied by a wire from the source unit marked "remote" or "power antenna".

Ground Terminal (GND): A proper ground is required for your amplifier to operate at peak performance. A short ground cable the same diameter as the power cable should be used to attach the ground terminal directly to the chassis of the vehicle. Always remove paint, dirt or debris to expose bare metal where the ground will be attached.

Speaker Terminals (SPEAKER) : Connect speakers to these terminals. Observe speaker polarity throughout the system. Improper phase can result in loss of bass response and/or poor overall sound quality.

Bridge Mode : When bridging the amplifier, use the right positive terminal and the left negative terminal only.

Warning : do not bridge the amplifier with an impedance lower than 4 ohm.

Fuse (FUSE) : When fuse blow, replace them with the same value. Never use a higher rated fuse!

Caution : fuses are located under the amp.

Owner's Manual - RT60.4

Installation & Mounting

MTX recommends your new Thunder amplifier be installed by an Authorized MTX retailer. Any deviation from specified installation instructions can cause serious damage to the amplifier, speakers and/or vehicles electrical system. Damage caused from improper installation is NOT covered under warranty. Please verify all connections prior to system turn on!

1. Disconnect the vehicle's negative battery cable.

2. Determine the mounting place for your MTX amplifier. Keep in mind there should be sufficient air flow for proper cooling. Mark the mounting holes from the amplifier to be drilled. Before drilling make sure all vehicle wires, gas lines, brake lines and gas tank are clear and will not interfere with installation. Drill the desired holes and mount the MTX amplifier.

3. Install a positive (+) power cable from the vehicle's battery through the firewall using a grommet or firewall bushing to avoid cable damage from sharp edges of the firewall. Run the cable through the interior of the vehicle and connect it to the amplifier's (+12V) terminal. Do Not connect to the battery at this time. Note : Use only proper gauge wire for both positive and negative connections.

4. Install a circuit breaker or fuse within 20cm of the battery. This effectively lowers the risk of severe damage to you or your vehicle in case of a short circuit or accident. Make sure the circuit breaker is switched off or the fuse is taken out of the fuse holder until all connections are made. Now connect your positive power cable to the positive battery terminal of the battery.

5. Grounding - Locate a proper ground point on the vehicle's chassis and remove all paint, dirt or debris to reveal a bare metal surface. Attach the ground wire to that contact point. Connect the opposite end of the ground wire to the (GND) terminal on the MTX amplifier.

6. Connect a Remote Turn-on wire from the source unit to the MTX amplifier's (REM) terminal. If the source unit does not have a dedicated Remote Turn-on lead, you may connect to the source unit's Power Antenna lead.

7. Connecting signal cables to the amplifier : There are two ways to supply the signal to your MTX amp.

8. To get maximum performance, we suggest connecting a high quality RCA to the corresponding outputs at the source unit and inputs of the amplifier.

9. If a source unit is being used without RCA outputs, use the included high-level amplifier's speaker terminals using the right gauge speaker wire.

10. Connect your speakers to your MTX amplifier's speaker terminals using the right gauge speaker wire. Bridged channels can drive a 4 ohm minimum load for max power.

11. Double check all previous installation steps, in particular, wiring and component connections. Once verified, reconnect the vehicle's negative battery cable, turn the circuit breaker on or place the fuse in the fuse holder.

Note : Gain Levels on the amplifier should be turned all the way down (counter clockwise) before proceeding with adjustments.

Troubleshooting

Problem

Cause

Solution

No LED indication No +12V at remote connection Supply +12V to terminal

No +12V at Power connection Supply +12V to terminal

Insuffcient ground connection Verify ground connection

Blown power fuse Replace fuse

Power LED on, no output Volume on source unit off Increase volume on source unit

Speaker connections not made Make speaker connections

Gain control on amplifier off Turn up gain

Signal processing units off Apply power to signal processor

All speakers blown Replace speakers

Output distorted Head unit volume set too high Lower head unit volume

Amplifier gain set too high

Lower amplifier gain

Balance reversed

RCA inputs reversed

Speakers wired L + R reversed

Reverse RCA input

Wire speakers with correct orientation

Bass is weak

Not using MTX woofers

Speakers wired out of phase

Buy MTX woofers

Wire speakers with correct phase

Blowing fuses

Amplifier defective

Excessive output levels

Return for service

Lower the volume

Introduction:

MTX woofers no son usados

Compra woofers MTX

Owner's Manual - RT60.4

Wire speakers with correct orientation

(lewy z sprawym)

MTX is proud to be an American Audio Company.

MTX is a proud member of Mitek Corp high quality consumer audio product lines.

MiTek

Corporation

AUDIO

STREETWIRES

Designed and Engineered by Mitek in Phoenix - AZ, USA

Assembled in PRC

© 2011 Mitek. All rights reserved

MTX, COUSTIC, XTANT, STREETWIREs and RoadTHUNDER

are registered trademarks of Mitek

Due to continual product development, all

specifications are subject to change without notice

Mitek-MTX

4545 East Baseline Rd. Phoenix, AZ 85042, USA