Dynacord Professional Power Amplifiers manual LX Series, ultra light weight power amplifiers

LX Series

LX Series

ultra light weight power amplifiers

LX1600 • LX2200 • LX3000

Xa 4000

•high-efficiency Class-H design

•switching power supply

•extremely light and compact

•30% dynamic headroom

•very high 2 ohm stability

•complete package of protective circuits

•dynamic audio limiter

•precise raster pots on front panel

•constant gain with 32dB

SWITCHING POWER

SUPPLY TECHNOLOGY

The combination of an analogue class-H design with a state-of- the-art switching power supply has made possible the creation of a professional power amplifier delivering up to 2 x 1500 watts into 4 ohms with excellent audio specifications but weighing only

8.7kg. Even complex loads as low as 2 ohms can be driven safely. Amp racks containing several LX power amplifiers for active multi-way use are therefore ultra-compact and lightweight.

CLASS - H TECHNOLOGY

With this technology, two different power supply rails are permanently available internally to the power

amplifier blocks. For most of the program material, the lower opera- ting voltage is able to reproduce the audio signal flawlessly; however, as soon as there are dynamic peaks, the amplifier switches internally and at high speed to the higher supply voltage.

Since for long periods the power amplifier blocks are operating with the lower supply voltage, there is considerably less power dissipation than with conventional class AB power amplifiers, which also means considerably less waste heat.

SAFETY CIRCUITS

The complete LX series is equipped with protections against overheating, overloading, short-circuits, DC and HF as well as a Back-EMF protection.

With the Soft Start system, the power outputs are switched on via a relay when a safe operational state has been reached and a power-up delay prevents the mains fuses being triggered.

German engineering. Manufactured in accordance with the Bosch Production System (BPS) in Straubing, Germany.

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