Audibax Pro PA4500T - 19″ 4×500 W Installation Amplifier (Class D, Low-Z/70/100 V)

Audibax Pro PA4500T - 19″ 4×500 W Installation Amplifier (Class D, Low-Z/70/100 V)

The Audibax Pro PA4500T is a 4-channel , 19″ (1U) rackmount installation amplifier designed for PA and background music systems in retail, hospitality, education and corporate environments. Its Class D power stage offers high energy efficiency and lower heat dissipation, with versatile operation in both low impedance (4–16 Ω) and 70/100 V lines. It incorporates Euroblock balanced inputs with per-channel gain control , DIP-switched high-pass filter , status indicators and an auto-standby function , facilitating an orderly, safe and robust deployment in 24/7 installations.

In terms of power, the PA4500T model is specified with 4x500 W nominal power (per channel) and a reference performance of 4x350 W at 8 Ω according to the manufacturer's manual; this allows it to cover everything from constant voltage lines to Low-Z applications with ease and stability.

Main features

• 4 independent channels in a compact 1U/19″ chassis for multi-zone installations.
• Hybrid output : Low-Z (4–16 Ω) and 70/100 V switchable per channel.
• Power : 4×500 W (nominal per channel); reference at 8 Ω: 4×350 W.
• Clean and stable signal : signal-to-noise ratio >80 dB and crosstalk >60 dB.
• Rear controls : gain per channel and high pass filter (70 Hz) by DIP.
• Euroblock balanced inputs (4× channels) for professional integration.
• Speaker outputs via Euroblock with screw for secure wiring in rack.
• Complete protections : short circuit, overload, high temperature, clip and DC; limiter and peak detection .
• Auto-standby and wide power range AC 100–240 V, 50–60 Hz .
• Dimensions and weight : 484 × 420 × 44 mm; 9.8 kg .

Product benefits

• One stage for all : covers low impedance speakers and 70/100 V lines, simplifying design and inventory.
• Quick and tidy installation : Euroblock connectivity on inputs and outputs for clean and secure wiring.
• Reliable 24/7 operation : High-efficiency Class D architecture, protections and automatic standby for extended lifespan.
• Channel control : DIP-based gain and high-pass filter adjustment that speeds up zone balancing.

Use cases

• Retail and shopping centers : ambient music and zone-specific announcements with long runs at 100 V.
• Hospitality and leisure : bars, restaurants, gyms, and hotels that require reliability and minimal maintenance.
• Education and corporate : classrooms, auditoriums and offices with PA and sound reinforcement needs.

Frequently Asked Questions

• How much power does it deliver into 8 Ω? The manual indicates 4x350 W at 8 Ω ; the manufacturer's website indicates 4x500 W as the nominal power. For technical specifications, we recommend citing both values ​​with their sources.
• Do you have DSP or network control? The PA4500T focuses on analog installations with rear gain and DIP switches; for DSP and IP control, see the MA DSP series.
• Can it work with 70/100 V and Low-Z? Yes, it supports 70/100 V and 4–16 Ω per channel.

Description for projects

4-channel Class D installation amplifier in 19″/1U rack ; Low-Z (4–16 Ω) and 70/100 V operation; rated power 4×500 W and reference at 8 Ω: 4×350 W ; balanced Euroblock inputs (4 channels) with gain per channel and high-pass filter by DIP; protections (short circuit, overload, temperature, clip and DC), limiter and peak ; auto-standby ; Euroblock outputs with screw ; power supply AC 100–240 V, 50–60 Hz ; dimensions 484 × 420 × 44 mm ; weight 9.8 kg .