Phoenix Gold ZXM500.4i

One of the most versatile four-channel amplifiers on the market.

The ZXM500.4i continues the success story of the popular ZXM500.4 model, offering even better performance, easier installation and wider compatibility – all in the same extremely compact body. The amplifier, further refined in response to consumer requests, uses Class D technology and delivers clean power in all operating situations.

New in the ZXM500.4i model

• Selectable load resistors – optimal power and perfect compatibility even with the car's original system.
• Quick connectors – fast and secure power and signal connections
• 20 V high-level input – easy integration into OEM systems
• Auto Start / Remote Trigger – choose automatic or manual start

The innovations make the ZXM500.4i amplifier even more versatile and installer-friendly.

What artificial load?

In some car models, the factory-installed car stereo mutes when an aftermarket amplifier is added to the speaker line and the stereo detects that there is no longer a speaker (resistor) in the speaker line. The ZXM500.4i eliminates the problem and allows you to select a six-ohm load, which prevents the stereo from muting.

The ZXM500.4i can also automatically turn on when it receives a speaker-level signal, eliminating the need for a separate excitation cable.

Specifications

• Class D four-channel amplifier
• 4 x 125W RMS @ 2Ω
• 4 x 80W RMS @ 4Ω
• 2 x 250 W RMS @ 4 Ω bridged
• Frequency response: 20 Hz – 20 kHz
• Signal-to-noise ratio: >90 dB
• Possibility to bring the input signal on two or four channels
• THD: <0.3%
• Class D efficiency ensures maximum power with minimal heat generation and minimal distortion.

Features

• Separate crossover filters for both channel pairs
• High / low pass filters: 40-400Hz / 12dB/oct
• Excellent signal-to-noise ratio and suppression of possible FM interference
• Short-circuit, thermal, over- and undervoltage protection
• LED status displays
• Automatic start from high-level output

Compact design

• Very small size for easy installation
• Surface mount components for reliability
• Improved EMI shielding to protect vehicle electronics
• Quick connectors for quick installation
• Dimensions: 165 × 83.1 × 34.8 mm