Important Remark; Introduction - Ecler MPA4-80 Bedienungsanleitung

1. IMPORTANT REMARK

Congratulations! You are the owner of a carefully designed and manufactured equipment.
We thank you for having purchased our MPA4-80 or MPA6-80 power amplifier.
It is VERY IMPORTANT that you read this manual before connecting the amplifier in order
to obtain its maximum performance.
We recommend our authorised Technical Services whenever any maintenance task
should be needed so that optimum operation shall be achieved.

2. INTRODUCTION

The MPA4-80 amplifier station consists of four 77W/4 amplifiers, which can be
configured through a set of switches found on the rear panel. This allows multiple amplification
setups useful in many situations, for example:
Four mono amplifiers for four different mono inputs.
When setup this way, the MPA4-80 is able to amplify four different audio signals, each one having a
dedicated volume control.
Four mono amplifiers for one common mono input.
The amplifier operates now with just one input signal for all amplifiers, but preserves the ability to
control each channels volume independently. This setup is useful when distributing signals to
different zones.
Four mono amplifiers for one common stereo input.
This setup is similar to the previous example but the input is now a stereo signal. The amplifier adds
both stereo channels together converting them into a mono signal.
Two stereo amplifiers for two different stereo inputs.
Each stereo channel offers a dedicated volume control. Useful for addressing two zones with two
different stereo signals.
Two stereo amplifiers for one common stereo input.
This setup is similar to the previous example but the input is now a single stereo signal which is fed
to both amplifiers.
Two bridged amplifiers for two different mono inputs.
Now you get a typical stereo amplifier configuration. With a bridged amplifier you obtain doubled
output power with a load of at least 8.
Two bridged amplifiers for a common mono input.
The MPA operates now with a single mono signal for two mono amplifiers, each one with its own
volume control
Two bridged amplifiers for a common stereo input.
This setup is similar to the previous example but the input is now a stereo signal. The amplifier adds
both stereo channels together converting them into a mono signal.
Two mono amplifiers and one bridged amplifier for one common mono input.
Useful for bi-amplified setups, with two amplifiers for mid-range speakers and tweeters and a third
(bridged) amplifier for a subwoofer. (This amplifier does not include any filtering)
4