Jbl Libra 500 – 500 Watts Power Amplifier With Mixer And Usb

JBL Libra 500 – 500 W Mixer Amplifier with USB Playback

The Libra 500 combines three boxes that installed sound usually needs separately — a mixer, a media player and a power amplifier — into one unit rated at 500 watts. It takes microphones, music sources and paging inputs, plays music directly from a USB drive, and drives either conventional low-impedance speakers or a 70 V / 100 V distributed line system. Crown DriveCore technology keeps the amplifier efficient and fanless, so it runs quietly and cool in shops, restaurants, classrooms, houses of worship and small halls.

Key features

• 500 W rated power output (at 4 ohms, 1 kHz)
• Mixer amplifier with microphone, music and paging inputs
• USB playback for background music without a separate player
• Drives 4 ohm and 8 ohm speakers plus 70 V and 100 V line systems
• Crown DriveCore technology for efficient, compact amplification
• Fanless design for silent, low-maintenance operation
• Runs on 240 V AC mains or a 36 V DC supply
• Bass control of plus or minus 10 dB at 100 Hz
• Built-in protection against surges and overloading

One unit instead of a rack of boxes

A typical small venue needs a microphone for announcements, a music source for background playback, and enough amplification to fill the space. Wiring those together from separate components costs rack space, installation time and money. The Libra 500 merges all three functions behind one set of controls: plug in the microphones and sources, connect the speakers, and the system is ready. That simplicity shortens both installation and staff training.

Low-impedance and line systems from one amplifier

Short cable runs to a few nearby speakers suit the 4 ohm and 8 ohm outputs. Larger or spread-out installations — a restaurant with ceiling speakers in several zones, a school corridor, a retail floor — suit 70 V or 100 V line distribution, where many speakers tap off one long run with individual transformers. The Libra 500 supports both approaches from the same unit, so the amplifier does not need to change if the speaker layout grows, and mixed projects can be planned around a single, familiar product.

DriveCore efficiency and fanless running

DriveCore, developed by Crown, replaces hundreds of conventional amplifier components with a single integrated chip. The practical results are an amplifier that is smaller and lighter, draws power efficiently, and produces little heat — which is why the Libra 500 needs no cooling fan. No fan means no fan noise in quiet spaces like worship halls and classrooms, and no fan to fail or clog with dust. Surge and overload protection guards the unit against the electrical knocks that installed equipment inevitably meets.

Power flexibility and everyday operation

The amplifier runs on standard 240 V AC mains at 50/60 Hz, and can also operate from a 36 V DC supply — useful for backup arrangements and portable setups where mains is unavailable or unreliable. A bass control offering plus or minus 10 dB at 100 Hz lets the installer warm up or tighten the low end to suit the room and speakers without adding an external equaliser. USB playback means background music keeps running from a pendrive alone.

For facility managers and integrators who need installed sound that simply works every day, the Libra 500 is a compact, flexible and proven way to power it.