Trouble-Shooting

SYMPTOM

POSSIBLE CAUSE

SOLUTION

No output and Power-on	No battery, ground, or remote
LEDs are off	connection

Verify that the B+, B-, and remote turn-on terminals are properly connected and that the headunit is turned on. Use a DC voltmeter to check for 12 volts between the ground terminal and the B+ terminal. Also, check between the ground terminal and the remote turn-on terminal.

Blown or melted power fuse	Use an ohmmeter to verify that the fuse has
	continuity between its ends. Disconnect the main
	B+ cable from the battery and the inputs of all
	devices in the system (including capacitors). Use
	an ohmmeter to check for a short between the
	power cable system and the vehicle's chassis.
	Correct any short and install a new fuse. Replace
	only with the same rating and type of fuse.

No output and power-on	No signal from the head unit or
LEDs are on	previous signal processor

Use an AC voltmeter to check for voltage at the headunit or processor's preamp outputs. The level should fluctuate with peaks in the music. An analog gauge works well for this test.

Faulty input signal cables	Use an AC voltmeter to check for voltage at the
	signal cables' outputs. Try substituting different
	signal cables.
Faulty speaker or speaker cables	Try substituting another speaker or cables.

Distorted sound	Clipped input signal feeding the
	amplifier or signal processor

Make sure the headunit and all other components are not producing a clipped signal. Most head- units clip their own output above 7/8 volume. Distorted signals coming into the amp will sound distorted at any input sensitivity setting.

	Amplifier or signal processor's input	Lower input sensitivity (counterclockwise).
	sensitivity too high	Setting the sensitivity too high causes distortion.
		Distortion causes speakers to rapidly overheat
		and can result in speaker failure.
Amplifier cuts off when	Poor ventilation	Check for a poor mounting location that allows
driven to high output		hot air to be re-circulated within the heatsink.
levels. Thermal protection		Check for blocked input or exhaust openings.
circuit activated (yellow
LED on).

Total speaker impedance is too low causing excessive heat.

Re-wire speakers to raise the total impedance seen by the amp. Minimum impedance is 2 ohms bridged or 1 ohm stereo.

ZXTi amp manualpg.19

ZX475Ti specifications

The Phoenix Gold ZX475Ti is an impressive car amplifier designed to deliver high-quality audio while being user-friendly and versatile. This amplifier is part of Phoenix Gold’s reputation for outstanding performance and craftsmanship, promising an exhilarating listening experience for audiophiles and casual listeners alike.

One of the standout features of the ZX475Ti is its power output. It delivers a robust 75 watts RMS per channel at 4 ohms, and when bridged, it can push 150 watts RMS. This level of power ensures deep, rich sound and the ability to drive more demanding speakers effectively. The amplifier is equipped to handle higher volumes without distortion, a crucial factor for those who want to push their audio system to its limits.

The design of the ZX475Ti is not only aesthetically pleasing but also functional. It features a compact and lightweight chassis, making it easy to install in various vehicle setups. The amplifier is built with high-quality components, which are crucial for longevity and reliability. Its sturdy construction ensures it can withstand the rigors of automotive environments.

Equipped with advanced technologies, the ZX475Ti includes a variable high-pass and low-pass crossover. This enables users to tune their sound system according to personal preferences, optimizing frequencies for different types of music or specific listening conditions. Additionally, the amplifier boasts a bass boost feature, allowing for enhanced low-frequency output, which is especially beneficial for genres that rely heavily on bass.

Moreover, the ZX475Ti incorporates a thermal and short-circuit protection system. This technology provides peace of mind during extended use, as it protects the amplifier from overheating or damage, prolonging its lifespan. The installation of the amplifier is facilitated further by its high-level inputs, which allow it to be connected to factory systems without requiring line-level converters.

In summary, the Phoenix Gold ZX475Ti stands out for its powerful audio output, customizable sound options, and robust construction. Whether you're a professional installer or a car audio enthusiast, the ZX475Ti provides the features needed to create a dynamic and satisfying listening experience in your vehicle. With its blend of performance, quality, and user-friendly features, the ZX475Ti remains a compelling choice in the competitive world of car amplifiers.