TROUBLE-SHOOTING

SYMPTOM

Amplifier cuts off when driven to high output levels. Overload circuit activated (red LED on).

POSSIBLE CAUSE

Excessive output current is the only thing that can cause the Overload LED to light. There are only a few possible causes:

A damaged speaker cable touching the vehicle chassis, speaker cables or speaker tinsel leads touching each other, or damaged speaker voice coil.

Damaged passive crossover components.

Total speaker impedance is too low causing excessive output current.

Defective output transistor inside the amplifier

SOLUTION

With the speaker wires disconnected from the amp, use an ohmmeter to check for a short from any speaker cable to chassis ground. Check the DC resistance of the speaker's voice coil. It should be close to the speaker's nominal imped- ance specification and should fluctuate when the cone is touched. Visually check each speaker for damaged tinsel leads, or other broken parts. Smell the speaker's magnet area for a burned scent indicating a damaged voice coil.

Visually examine inductors, capacitors and resistors for signs of heat stress, water, or physical damage. Use a soldering iron to touch up connections to the crossover circuit board. Try substituting a different crossover network.

Re-wire speakers to raise the total impedance seen by the amp.

This condition will cause the overload LED to stay lit without speaker wires connected to the amplifier. The amplifier must be returned to an authorized service center for repair.

Authorized Phoenix Gold Service Centers

USA

 

Phoenix Gold Factory

877.745.3782

Canada

 

Trends Electronics

604.988.2966

ZXTi amp manualpg.20

Page 21
Image 21
Phoenix Gold ZX475Ti manual Authorized Phoenix Gold Service Centers

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.