The digital power amplifier PA-4300DX is a transformer-less 4-channel power amplifier with 4 x 300 watts or 2 x 600 watts power sharing performance according to IEC 268-3 in a 1U housing with a power supply of 230VAC and a backup power supply of 24VDC.
The low weight of only approx. 6.5 kg makes transport easier for fully equipped 19“cabinets (no on-site reconstruction necessary!) and enables a „one-man service“ for the installation and maintenance of the powerful system.
Each power amplifier module has a separate audio input. Each of these inputs can be assigned its own LF signal. In addition, each amplifier module has its own switching power supply. In case of failure of e.g. a power amplifier block or a switching power supply, the remaining amplifier channels are thus not affected by the failure (stand-alone design).
The power amplifier has floating and transformer less 4 x100V direct outputs without the need for an output transformer.
On the rear of the power amplifier there are error indicators and control contacts: REMOTE, STAND-BY, FAULT-GND, FAULT-OUT and 2 x ground.
The power amplifier has various protection circuits such as short circuit protection, DC voltage protection, overload protection as well as protection against HF interference, fan monitoring with automatic switching off of the system in the event of impairment.
An active standby circuit ensures low power consumption. When fully operated, the power amplifier has an efficiency of over 90% and is therefore particularly energy efficient.
The power amplifier has a fault output via potential-free contact.
LED displays provide information about signal and operating states, such as Signal-In and Protect.
Four thermo-controlled fans ensure effective cooling of the amplifier with unrestricted continuous operation and full performance.
