The HDL 50-A 4K is an active 3-way line array module for large-sized events, indoors and outdoors. It features a sound pressure level of 143 dB SPL with a built-in 8000 W PEAK, 4000W RMS Class-D four-channel amplifier. Equipped with eight best-of-class transducers, it offers excellent playback quality ideal for professional musical applications. The proprietary 90 x 10 degrees 4PATH waveguide with the symmetrical design of the cabinet delivers optimal coverage.

FEATURES

• 8000 Watt power, 4 x onboard amplifiers
• 143 dB max SPL
• RDNet networked management and monitoring
• 48 kHz, 32 bit DSP processing
• 2 x 12” neodymium woofers
• 4 x 6″ neodymium woofer midrange
• 2 x 3” titanium dome neodymium compression drivers
• Remarkably compact and lightweight

The most powerful HDL array ever made by RCF
The 4K amplifier doubles the power of the HDL 50-A to achieve new levels of clarity and absence of distortion. Transducers work at full performance and the SPL output is more than doubled. Furthermore, we improved the power supply section with a tripled current level on fast transients, for a level of detail usually achieved only in high-end studio monitors.

Faster and more powerful
The 4K amplifier is an essential part of HDL 50-A reengineering effort. The 4000 W RMS Class-D power operates at very low impedance producing a quick and detailed transient response, while the high damping factor improves sound quality and detail.

The HDL 50-A 4K power section is tailored to the transducers and the cabinet design to reach excellent efficiency, low distortion and high signal-to-noise ratio. The amplifier module features a solid machined aluminum structure that stabilizes the amplifier during transportation. The control panel on the back adjusts volume, bypass, delay, presets and advanced functions. The signal input preamplifier features a double opto isolation to avoid noise and ground loops.