Univox PLS-X

The next generation of loop drivers

Univox PLS-X1, X3 and X5 are the most efficient professional loop drivers available. A combination of high voltage, high current and strong long-lasting casing make our loop amplifiers unparalleled in the world.




For small rooms




For medium size rooms




For large rooms and auditoriums

Great sound

PLS-X loop drivers are equipped with a low frequency masking filter for voice enhancement and produces an amazingly clear sound.

Smaller and lighter

The units are only 1U high and 1⁄2 widths, making it possible to mount two drivers in one single 19″ rack mount. Weight is reduced by using significantly less copper and other metals than other loop drivers.

No fans needed

The electronic transformer gives 93% efficiency, compared to conventional transformers where the waste is 8-9 times higher. No internal fans are needed as there is no power leakage. Cooling is due to efficient design. This also prevents dust accumulation and noise, as well as prolonging the products life span.

Environmentally friendly

The reduced use of copper together with the highly efficient and energy saving design, leaves a much smaller carbon footprint. The PLS-X and SLS Class D Tech series are the most environmentally friendly loop amplifier drivers in the world.

The self-diagnostic system

The self-diagnostics will indicate which systems are operational and which are not. The built-in signal generator can be used to set just the output level if a different signal source is not available.

Enhanced metal loss compensation

Since different types of metals and their distances to the loop cable effect the sound, different types of compensation might be needed. The X-series is equipped with a unique Parametric MLC (Metal Loss Correction) to fine tune for the effects of metal loss.

Dual Action AGC

Univox was the first to include Dual Action AGC (Automatic Gain Control). When sudden and sharp sounds are suppressed, the Dual Action AGC lets the sound return immediately, compared to other products which take up to 40 seconds to regain the previous sound level.

Front control panel

All controls are placed on the front panel, which makes the driver easy to adjust, also when mounted in a rack.

Voice alarm system

The voice alarm system input overrides all other input signals and the 100 V input makes it possible to connect voice alarms from 100 V speakers directly to the amplifier.