Important Remark; Introduction - Ecler HZA4-120F Manual De Instrucciones

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1. IMPORTANT REMARK

Congratulations! You are the owner of a carefully designed and manufactured equipment. We
thank you for having purchased our HZA4-120F 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 HZA4-120F is a four-channel power amplifier with high impedance (100V line) directly
amplified outputs. Its main features are:
 Internal structure with four separate mono amplifiers, for 4 different mono input signals.
 The FLEXIPOWER technology can be used to link 2, 3 or 4 adjacent channels, adding their
individual power, while operating as a single amplifier channel with a total power equivalent to the
sum of the channels.
 Independent volume adjustment (per channel) through front panel controls.
 Independent (per channel) 0-10 VDC remote volume control, via screw terminals on rear panel.
 SPM 100 Technology - Channel N for direct high impedance amplification (100V line) without
output transformers, which has the following benefits compared to traditional 100V line
amplification with transformers:
o Better frequency response in the low band of the audible spectrum (low frequencies or
bass) because there is no degradation of this part of the spectrum usually due to the
saturation of transformers core.
o Great efficiency.
o Reduced weight.
 Convection cooling, without fan, with the following benefits:
o No background noise.
o Increased reliability.
 "Auto-standby" function: the amplifier automatically switches to standby mode (low consumption
mode) when it remains approximately two minutes without detecting any input signal, then
immediately switches back to normal operating mode when an input signal is re-detected.
 Thermal protection.
 Overload protection.
 "Anticlip" system to protect from saturation due to an excessively high signal level.
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