RTT8P - Speaker MTX Audio - Free user manual and instructions

Product Type	Powered subwoofer (bass tube)
Brand	MTX Audio
Model	RTT8P
Amplifier Type	Class-D mono
Maximum Power	420 W
RMS Power	140 W
Subwoofer Diameter	20 cm (8 inches)
Dimensions (W x H x D)	25.5 x 26 x 48 cm
Power Supply	12 V DC (terminal +12V, ground GND, remote REM)
Recommended Cable Gauge	6 mm² 100% copper
Audio Inputs	RCA (0.1 V to 4 V) and high level (High Level Input)
Sensitivity Adjustment (Gain)	0.1 V to 4 V
Remote Control	EBC (External Bass Control) included
Thermal Protection	Red LED (Prot.) lights up in case of overheating
Power Indicator	Red LED (PWR) on when the amplifier is operating
Installation	Recommended by a specialized installer; disconnect battery before
Cooling	Free air in front of the amplifier section
External Fuse	Mandatory, within 20 cm of the battery
Cleaning	Soft dry cloth; avoid chemical products
Country of Origin	Not specified (estimated: United States)

Frequently Asked Questions - RTT8P MTX Audio

How to connect the power of the MTX RTT8P?

Connect the power cable (+12V) directly to the positive battery terminal via a fuse placed within 20 cm of the battery. Use a 6 mm² copper cable. The ground (GND) must be connected to the vehicle's bare metal with a high-quality contact.

Where to connect the Remote (REM) wire?

The Remote wire connects to the 'REM' terminal of the amplifier and to the 'Remote' or 'Power Antenna' output of your audio source. It allows turning the amplifier on and off with the source.

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

Turn the GAIN potentiometer to minimum (counterclockwise). Raise the source volume to 3/4 of maximum. Slowly increase the GAIN until you hear distortion, then reduce it one notch. This aligns the amplifier's sensitivity with the source.

What to do if the protection LED (Prot.) lights up red?

The protection LED indicates amplifier overheating. Turn off the system and let the amplifier cool down. Make sure air circulates freely around the amplifier section.

How to use the high level input (High Level Input)?

If your source does not have RCA outputs, use the supplied adapters. Connect the speaker wires from the source to the adapters, then insert the adapters into the 'High Level Input' connector of the amplifier.

What is the EBC (External Bass Control) for?

The EBC control, supplied with the amplifier, allows adjusting the subwoofer level from the front seats of the vehicle. Plug it into the EBC (EBC Remote) port of the amplifier.

What cable gauge to use for power and ground?

MTX recommends using 6 mm² 100% copper cable for power (+12V) and ground (GND) connections. The ground should be as short as possible.

Can I install the MTX RTT8P myself?

MTX recommends hiring a specialized installer. Improper installation can damage the product, speakers, or the vehicle's electrical system. If you do it yourself, follow the instructions in the manual carefully.

What is the maximum and RMS power of the RTT8P?

The maximum power is 420 W and the RMS power is 140 W. The amplifier is Class-D mono.

How to clean the MTX RTT8P speaker?

Use a soft dry cloth to dust the speaker. Avoid solvents, abrasive products, or chemical cleaners that could damage the finish.

USER MANUAL RTT8P MTX Audio

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RTT8P

20cm (8") Class-D Powered Tube - 140W RMS - 420W Peak Designed by MTX in Phoenix, AZ - USA

Thank You!

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

Specifications :

• Powered vented tube enclosure
• Mono block class-D amplifier
• Subwoofer: 20cm (8")
• Amplifier Max Power: 420W
  • Amplifier RMS Power : 140W
  • High and low level inputs
  • EBC (External Bass Control) remote included
  • Dimensions : 25,5x26x48cm

Control Panel on the Amplifier :

Power +12V REM GND 4 Protection Power 5 Input Ch.1 Ch.2 6 7 Gain 4V - 0.1V High Level Input Left Right 8 9 EBC Remote

1 Power Terminal (+12V): 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 (+12V) 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 a minimum of 6mm2 full copper power wire with the MTX RTT8P.
2 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".
3 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.
4 Protection LED (Prot.) : When the amp is in thermal protection, the LED turns to red.
5 PowerOn LED (PWR.) : The LED illuminates red when the amp is switched on.
6 RCA Inputs (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 RCA cables to decrease the possibility of radiated noise entering the system.
7 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 4V. 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.

Speaker level inputs (High Level Input) : 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.

9 Remote bass control port (EBC) : use this port to connect the optional MTX EBC. It allows you to control the output level siting at the front of the car.

Installation & Mounting :

MTX recommends your new MTX RTT8P to 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 turn on your system!

1. Disconnect the vehicle's negative battery cable.
2. Determine the mounting place for your MTX RTT8P. Keep in mind there should be sufficient air flow for proper cooling.
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 (+12V) terminal (1). Do Not connect to the battery at this time.

Note : Use only proper gauge wire for both positive and negative connections.

1. 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 circuitbreaker 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.
2. 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 amplifier (3).
3. Connect a remote turn-on wire from the source unit to amplifier remote terminal (2). If the source unit does not have a dedicated Remote Turn-on lead, you may connect to the source unit's Power Antenna lead.
4. Connecting signal cables to the amplifier: There are two ways to supply the signal to your MTX RTT8P.

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

- If a source unit is being used without RCA outputs, use the included high-level amplifier's speaker terminals (8) using the right gauge speaker wire.

1. 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.

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MX®

AUDIO

MTX is proud to be an

American Audio Company since 1971.

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

MiTek Corporation

Designed and Engineered by Mitek in Phoenix - AZ, USA

Assembled in PRC. © 2017 Mitek. All rights reserved.

MTX is a registered trademark of Mitek.

Due to continual product development, all specifications are subject to change without notice.

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