Product Description
The LX42400 is a high-power dual channel professional PA power amplifier designed for large-scale sound reinforcement systems. It is widely used in auditoriums, stage events, mosques, outdoor shows, and heavy-duty PA installations where high output power, stability, and continuous operation are required.
This amplifier is built using Class H / high-efficiency amplification technology (variant dependent) and is suitable for both low-impedance speaker systems and 70V/100V distributed PA systems.
Key Features
• Dual-channel high-power PA amplifier
• Very high output power suitable for large sound systems
• Class H efficient amplifier design (variant dependent)
• Stable performance under continuous heavy load
• Supports stereo and bridged mono operation
• Balanced XLR and jack input options
• Speakon and binding post speaker outputs
• Built-in protection system (thermal, short circuit, overload, DC)
• Forced air cooling with temperature-controlled fan
• High signal-to-noise ratio for clear audio output
• Front panel gain control for each channel
• Rugged 19-inch rack-mount metal chassis
Specifications
• Product Type: Dual Channel PA Power Amplifier
• Model: LX42400
• Channels: 2 Channel (Stereo / Bridgeable)
• Output Power (Stereo @ 8Ω): ~600W + 600W (variant dependent)
• Output Power (Stereo @ 4Ω): ~850W + 850W (variant dependent)
• Output Power (Stereo @ 2Ω): up to 1200W + 1200W (variant dependent)
• Bridged Output: Up to 2400W – 3200W (variant dependent)
• Frequency Response: 20 Hz – 20 kHz
• Total Harmonic Distortion (THD): < 1%
• Signal to Noise Ratio: > 95 dB (typical range)
• Input Sensitivity: 0 dBu (775 mV) / 1.23 V selectable
• Input Impedance: 10 kΩ unbalanced / 20 kΩ balanced
• Cooling System: Variable speed fan (rear to front airflow)
• Protection: Thermal, DC fault, short circuit, overload, clip limiter
• Power Supply: AC 220–240V, 50/60 Hz
• Mounting Type: 19-inch rack mount
• Application: Large PA systems, stage shows, auditoriums, mosques, outdoor events, professional audio installations

