Troubleshooting a System

The key to finding the problem in a misbehaving sound system is to isolate parts of that system in a logical fashion to track down the fault.

Description of the PROTECT system built into all TITAN amplifiers

The diagnostic system will shut down the amplifier, until reset by turning the head unit off, and back on. This state of affairs will be indicated by the front panel PROTECT LED lighting up under the following conditions:

1 - A sort circuit on the loudspeaker leads.

2 - An internal amplifier fault that causes a DC offset on the loudspeaker output.

Should the amplifier go into protect mode, simply disconnect all RCA and speaker leads, while keeping +12 volt, power ground and remote leads connected.

1.Now turn the amplifier back on, and if the diagnostic LED lights, the amplifier has an internal fault.

2.If not, plug the RCA cables back, and reset the amplifier. If it goes into diagnostic now, the fault lies in the input, either with bad cables or source unit.

3.If the amplifier seems fine with RCA cables plugged in, connect the speakers, one at a time, and if one of the speakers or its wiring is faulty, it will activate the diagnostic system.

Amplifier heatsink overheating

The amplifiers will shut down when the heatsink temperature reaches 80 degrees centigrade, and turn back on once the unit has cooled down below that point. Causes of overheating:

1 - Inadequate cooling - relocate or remount to provide better natural airflow over the fins.

2 - Driving high power levels into low impedances - back off on the volume control, and/or make sure you are not loading the amplifier with less than the recommended loudspeaker impedance.

Low output power

1 - Check that level controls have been set up properly.

2 - Make sure that the battery voltage, as measured at the amplifier’s +12 volt and ground terminals, is 11 volts or more. 3 - Check all +12 volt and ground connections.

Fuses blowing

1 - The use of loudspeaker impedances below the recommended minimums will draw more current.

2 - A short on the main +12 volt cable from the battery to the vehicle chassis will cause the main fuse to blow.

3 - If an amplifier fuse blows continually, with only +12 volt, ground and remote leads connected, the amplifier may be faulty.

System does not turn on 1 - Check all fuses.

2 - Check all connections.

3 - Measure the +12 volt and remote turn on voltages at the amplifier terminals. If these are non existent or low, take voltage measurements at fuse holders, distribution blocks, the head unit’s +12 volt and remote leads to localize the problem.

Noise problems

System noise can be divided into two categories, hiss, and electrical interference.

Hiss, or white noise

1 - High levels of white noise usually occurs when amplifier level controls are turned up too high - readjust according to the procedures in section ”Setting up systems after installation for best performance”

2 - Another major problem that can cause excessive hiss, is a noisy head unit - unplug the amplifier input RCA cables, and if the hiss level reduces, the source unit is at fault.

Electrical interference

The inside of an automobile is a very hostile electrical environment. The multitude of electrical systems, such as the ignition system, alternator, fuel pumps, air conditioners, to mention just a few, create radiated electrical fields, as well as noise on the +12 volt supply and ground. Remember to isolate the problem - first unplug amplifier input RCA cables, if the noise is still present, check the speaker leads, if not, plug the RCA’s back, and investigate the source driving the amplifier, one component at a time.

A ticking or whine that changes with engine RPM:

1 - This problem could be caused by radiation pickup of RCA cables too near to a fuel pump or a distributor, for instance, - relocate cables.

2 - Check that the head unit ground is connected straight to the vehicle chassis, and does not use factory wiring for ground.

3 - Try to supply the head unit with a clean +12 volt supply directly from the battery +, instead of using a supply from the in dash wiring/fusebox.

A constant whine:

This type of noise can be more difficult to pinpoint, but is usually caused by some kind of instability, causing oscillations in the system. 1 - Check all connections, especially for good grounds.

2 - Make sure that no speaker leads are shorting to exposed metal on the vehicle chassis.

3 -RCA cables are notorious for their problematic nature, so check that these are good, in particular the shield connections.

TXi10080, TXi6008, TXi4408, TXi15080, TXi4008 specifications

Maxxsonics is a prominent player in the audio industry, and their TXi series amplifiers exemplify the brand’s commitment to high-performance sound. The TXi15080, TXi4408, TXi4008, TXi6408, and TXi7508 are designed to deliver exceptional audio quality for car audio enthusiasts and installers alike. These amplifiers are engineered to provide powerful amplification while ensuring efficiency and flexibility in various applications.

The TXi15080 offers a robust power output, making it ideal for driving multiple speakers or subwoofers. Its high-current power supply and advanced thermal management help maintain performance even under heavy loads, while its compact design allows for easy installation in tighter spaces. With a signal-to-noise ratio that exceeds industry standards, users can expect crystal-clear sound quality.

Moving to the TXi4408, this amplifier is designed with versatility in mind. It features a four-channel configuration that allows it to power both speakers and subwoofers simultaneously. The TXi4408 incorporates a built-in crossover, giving users control over frequency distribution to enhance their sound system’s overall performance. The adjustable gain and bass boost options provide audiophiles with the flexibility to fine-tune their listening experience.

The TXi4008 follows suit with a two-channel design that focuses on delivering high-fidelity audio at lower power levels. This makes it an ideal choice for those who want to improve their factory systems without overwhelming their vehicles’ electrical systems. Its compact footprint makes it easy to install while still producing a powerful output.

For those needing more power, the TXi6408 is a six-channel amplifier that combines high power with flexibility. It includes features such as adjustable crossover settings and a built-in equalizer, which makes it an excellent option for custom audio setups. The TXi6408 is suitable for driving a full-range speaker setup, delivering deep, rich bass alongside clear highs, ensuring a balanced listening experience.

Lastly, the TXi7508 stands out with its high-performance capabilities, boasting an impressive power rating and flexibility for varied setups. Its advanced circuitry is designed to provide greater stability and efficiency, mitigating any risk of distortion even at high volumes. Like its counterparts, the TXi7508 offers extensive configurability, allowing users to adapt their sound systems to their specific needs.

In summary, the Maxxsonics TXi series amplifiers are characterized by their robust power outputs, adaptability to different audio configurations, and user-friendly features that make them an excellent choice for both beginner and seasoned audio enthusiasts. Each model encapsulates the essence of high-quality sound and efficiency, catering to the diverse needs of modern car audio systems.