TX2275 - Car stereo MTX Audio - Free user manual and instructions

Product Type	2-Channel Class-AB Amplifier
Dimensions	180 × 135 × 52 mm
Power Supply	12V DC (vehicle battery)
CEA2006 Certified Power (2Ω)	2 × 110 W RMS (THD+N ≤ 1%)
CEA2006 Certified Power (4Ω)	2 × 75 W RMS (THD+N ≤ 1%)
CEA2006 Certified Power (bridged 4Ω)	1 × 220 W RMS (THD+N ≤ 1%)
Active Filter - High-Pass (HPF)	12 dB/oct, variable from 50 Hz to 120 Hz
Active Filter - Low-Pass (LPF)	12 dB/oct, variable from 50 Hz to 120 Hz
Signal-to-Noise Ratio (1W)	> 74 dB
THD+N (1W)	≤ 0.18%
Frequency Response (±1dB)	10 Hz - 60,000 Hz
Input Sensitivity Level	200 mV to 6 V
Inputs	RCA (with included high-level adapters)
Speaker Outputs	2-channel binding posts (bridgeable)
Optional Remote Control	EBC-1 (subwoofer level adjustment)
Protection	Thermal and short-circuit (red LED)
Installation	Flat mounting, free ventilation, ground connection and +12V direct to battery
Maintenance and Cleaning	Dry cloth, avoid liquids and abrasive products
Safety	Disconnect battery before installation; fuse within 20 cm of battery
Technical Support	[e-mail] / mtxAudio.fr

Frequently Asked Questions - TX2275 MTX Audio

How to connect the TX2275 amplifier?

Follow these steps: 1) Disconnect the battery ground. 2) Mount the amplifier flat. 3) Connect the power cable (12V) to the battery with a fuse. 4) Connect the ground (GND) to bare metal. 5) Connect the REM wire to the source. 6) Connect the RCA or high-level inputs. 7) Connect the speakers respecting polarity. 8) Reconnect the battery and adjust the gain.

What to do if the Power LEDs do not light up?

Check that the REM connector receives +12V, that the power (12V) is connected and that the ground (GND) is correct. If the battery fuse has blown, replace it after identifying the cause.

How to adjust the gain (sensitivity)?

Turn the GAIN potentiometer to minimum. Increase the source volume to 3/4 of maximum. Raise the GAIN until you hear distortion, then lower it slightly. This adjustment aligns the amplifier's sensitivity with the source.

How to use the active filter (HPF/LPF)?

The X-Over switch can be set to LP (low-pass for subwoofer), HP (high-pass for speakers) or Off (full range). Set the crossover frequency between 50 and 120 Hz according to the speakers used.

How to connect in bridged mode?

Use the positive terminal of channel 1 and the negative terminal of channel 2. The minimum impedance in bridged mode is 4Ω. Make sure the X-Over switch is correctly set.

What to do if the sound is distorted?

The gain may be too high. Lower it. Also check that the RCA cables are not reversed and that the speakers are in phase. If the source is too loud, reduce the volume.

Why does the amplifier go into protection (red LED)?

This may be due to too low impedance (below 2Ω), overheating, or supply voltage too high or too low. Wait for cooling or check the battery and alternator.

Can I use high-level inputs?

Yes, if your source does not have RCA outputs. Use the supplied adapters: connect the speaker wires from the source to the adapters, then plug them into the High Inputs connectors.

How to install the EBC remote control?

The EBC-1 remote control (optional) connects to the Remote port of the amplifier. It allows adjusting the subwoofer level remotely. Follow the instructions provided with the accessory.

What cable gauge to use?

MTX recommends a power cable of 8 to 10 mm². For speakers, use a minimum gauge of 4 mm². The ground must have the same gauge as the power cable.

USER MANUAL TX2275 MTX Audio

2-channel Class-AB Amplifier 660W Peak - 2x75W RMS

TX2450

4-channel Class-AB Amplifier 900W Peak - 4x50W RMS

Designed by MTX in Phoenix, AZ - USA

USA-UK

Thank You!

Thank you for purchasing an MTX Audio TX2 amplifier. Proper installation matched with MTX speakers and subwoofer provide superior sound and performance for endless hours of waking the neighbors. Congrats and enjoy the ultimate audio experience with MTX!

- Specifications :

TX2275 TX2450

• 2-channel Class-AB wide range amplifier
• CEA2006 certified Power Output :
• 2x110W RMS @2Ω and THD+N ≤ 1%
• 2x75W RMS @4Ω and THD+N ≤ 1%
• 1x220W RMS bridged @4Ω and THD+N ≤ 1%
  Crossover:
• High pass 12dB/oct, variable from 50Hz to 120Hz
• Low pass 12dB/oct, variable from 50Hz to 120Hz
• Signal-to-Noise Ratio (1 Watt): > 74dB
• THD+Noise (Distortion) (1 Watt): ≤ 0,18%
  Frequency Response (± 1dB) : 10Hz - 60000Hz
  Maximum Input Signal: 6V
  Maximum Sensitivity: 200mV
• Dimensions : 180x135x52mm
  High level inputs

• Optional EBC remote control (EBC-1)

• 4-Channel Class-AB wide range amplifier

• CEA2006 certified Power Output :
• 4x75W RMS @2Ω and THD+N ≤1%
  -4x50W RMS @4Ω and THD+N ≤1%
• 2x150W RMS bridged @4Ω and THD+N ≤1%
  Crossover:
• High pass 12dB/oct, variable from 50Hz to 120Hz
• Low pass 12dB/occt, variable from 50Hz to 120Hz
• Signal-to-Noise Ratio (1 Watt): > 73dB
• THD+Noise (Distortion) (1 Watt): ≤ 0,2%
  Frequency Response (± 1dB) : 10Hz - 60000Hz
  Maximum Input Signal: 6V
  Maximum Sensitivity: 200mV
• Dimensions: 220x135x52mm
  High level inputs
• Optional EBC remote control (EBC-1)

- Settings, Power and Speaker connections :

TX2275

TX2450

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 200mV output for proper operation of the amplifier).

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

2 Gain Control (Gain): The gain control matches the input sensitivity of the amplifier to the source unit being used. The operating range varies from 200my 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.

X-Over Switch (X-Over):

In "LP" position, the active low pass (LP) x-over is turned on. Use this position for subwoofer application.

In "HP" position, the active high pass (HP) x -over is turned on. Use this position for speaker application.

In "Off" position, the x-over is turned off. The amp is in wide range mode.

X-Over Frequency Control (Frequency): Used to select the desired x-over frequency. The frequency is adjustable from 50Hz to 120Hz.
5 Speaker level inputs (High Inputs): 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 be used to switch the amplifier on and off.

External Bass Control Port (Remote) - The Subwoofer Level Control Remote (EBC) plugs directly into this port, while the EBC itself can be placed anywhere in the vehicle for on demand bass adjustments. Attention, the EBC is optional. You can purchase it separately (Reference : EBC-1).
1 PowerOn LED (Power): The LED illuminates green when the amp is switched on.
Protection LED (Protec.) : The LED illuminates red when the amp is in short circuit or thermal protection.
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.
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".
(+12V) 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 (+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 8 10mm^2 power wire with the MTX TX2275 and TX2450.
Speaker Terminals (Speaker Output): Connect speakers to these terminals. Ensure correct polarity, positive-to-positive (+ / +) and negative-to-negative (- / -) . Reversing the polarity strongly degrades the bass level and the sound quality.

Bridge Mode :

TX2275 : When bridging the amplifier, use the Ch.1 positive terminal and the Ch.2 negative terminal only.

TX2450 : When bridging the amplifier, for the two first channels, use the Ch.1 positive terminal and the Ch.2 negative terminal only. For the two following channels, take the Ch.3 positive terminal and the Ch.4 negative terminal.

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

Installation & Mounting :

MTX recommends your new amplifier be installed by an Authorized MTX retailer. Any deviation from specified installation instructions can cause serious damage to the amplifier, speakers and/or vehicle's 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 head unit to the MTX amplifier's Remote terminal. If the head unit does not have a dedicated Remote Turn-on lead, you may connect to the head unit's Power Antenna lead.
7. Connect RCA cables from the head unit to the MTX amplifier's RCA inputs. Run all signal cables away from vehicle wiring, computers and power cables. If cables must be crossed do so at a 90^ angle. Use only high quality RCA cables to decrease radiated noise from entering the system.
8. Connect your speakers to the MTX amplifier's speaker terminals using proper gauge wire.
9. 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

Power LED is off No +12V at remote connection Supply +12V to terminal

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

Insufficient ground connection Verify ground connection

Blown power fuse Replace fuse and try to understand why

Blown amp Return for service

3 LEDs are flashing red Speaker load is too low Remove the speaker(s)
The amp is in thermal protection Wait for the amp to cool down
Input tension is too high or too low Check your battery and your alternator
3 LEDs are solid red, Volume on head unit off Increase volume on head unit

but no output

Speaker connections not made Make speaker connections

Gain control on amplifier set to minimum

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

Speakers wired reversed

RCA inputs reversed

Reverse RCA input

Bass is weak

Speakers wired out of phase

Not using MTX woofers

Buy MTX woofers

Blowing fuses

Excessive output levels

Amplifier defective

Return for service

Wire speakers with correct orientation

Wire speakers with correct phase

Lower the volume

- Stay Tuned - Technical support :

mtxaudio.eu

[e-mail]

twitter.com/MTXEurope

facebook.com/MTXEurope

Installation examples :

Installation n°1: 3-Channel system. Compo system @ front + subwoofer/ enclosure @ back.

Installation n°2 4-Channel system Compo system @ front + coaxials @ back.

Installation n°3: 5-Channel system. Compo system @ front + coaxials @ back + subwoofer/enclosure system @ back

Installation n°4:
3-Channel system
with multiple amps.
Compo system @ front
+ dual subwoofer/enclosure system @ back

Recommended subwooers/enclosures: TR12-04, TR12AV, RTE12AS, RTF10AS, RT12AT, RT10AS, RT12AV
Recommended speakers: any TR/TRC/TRS speakers, any TX2 speakers, any TX4 speakers, any RTC/RTS speakers

FR

Merci!

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Einbaubeispiele :

Invertas as saidas RCA

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Exemplos de instalacao :

Instalacao n°3:
Sistema 5 canais
Sistema vias seperadas @ frente ^+ coaxiais @ traseira
+ subwoofer/caixa @ traseira

Instalacao n°4:
Sistema 3 canais
com multiplos amplificadores
Sistema vias seperadas @ frente ^+ duplo subwoofer/caixa
@traseira
Subwooers/caixas recomendadas:TR12-04,TR12AV,RTE12AS,RTF10AS,RT12AT,RT10AS,RT12AV Altifalantes recomendados:TR/TRC/TRS,TX2,TX4,RTC/RTS

IT

Grazie!

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mtx-audio.de

[e-mail]

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facebook.com/MTXEurope

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Exemple instalare :

Instalarea n°1:
Sistem 3 canale.
Difuzoare component
sistem @ fata +
subwoofer @ spate.

Instalare n°3:
Sistem 5 canale.
Difuzoare component system @ fata + difuzoare coaxiale @ spate + Subwoofer @ spate

Instalarea n°4:
Sistem 3 Canale cu mai multe amplificatoare. Difuzoare component sistem @ fata + subwoofer dublu @ spate
Subwoofer/ incinte recomandate:TR12-04,TR12AV, RTE12AS,RTF10AS,RT12AT,RT10AS,RT12AV Difuoroare recomandate:TR/TRC/TRS,TX2,TX4,RTC/RTS

SP

Introduccion:

Thank you for purchasing an MTX Audio TX2 amplifier. Proper installation matched with MTX speakers and subwoofer provide superior sound and performance for endless hours of waking the neighbors. Congrats and enjoy the ultimate audio experience with MTX!

- Specificaciones :

TX2275 TX2450

MTX woofers no son usados

Compra woofers MTX

Fusibles dañados

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facebook.com/MTXEurope

Installation n°2 4-Channel system Compo system at the front ^+ coaxials at the back.

MTX is proud to be an American Audio Company since 1971.

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

Designed and Engineered by Mitek in Phoenix - AZ, USA - Assembled in Korea. © 2016 Mitek. All rights reserved. MTX is a 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