Introduction; Feature List; Control Elements; The Front Panel - Alto MACRO 830 User Manual

1. INTRODUCTION

Thank you very much for expressing your confidence in
Professional Stereo Amplifier . With the MACRO 830/1400/2400 you have acquired an extremely musical and fle-
xible High Power Amplifier which is based on many years of experience and findings in amplifier technology and is
used through the world in the renowned studios. The MACRO 830/1400/2400 is used for professional output of stage
stereo at three levels of power, with excellent performance. Output power can be adjusted at the user's demand,
and the sound quality and protecting circuit are both sophisticated.
The front panel presents you with 6 LEDS (Power LED, Protection LED, Clip & Signal LED for both channels) and
2 Level Controls (for both channels), you can operate this unit more precise and easier. The Output Connectors are
Speak-on jacks, and the binding post terminals are used for better matching. Before connecting this unit into your
sound system, please make sure it is powered down to prevent any electric shock.

2. FEATURE LIST

£»
Sophisticated protecting circuits protect the machine from improper tampering
£»Input matching allows collection with any preamplifier
£»Excellent frequency echo and sound quality
£»High fidelity and low noise
£»Balanced XLR and 1/4" TRS Input Connectors
£»Output Connectors are speak-on jacks, and the binding post terminals are used for better matching
£»Output power can be switched between stereo , parallel and bridged
£»High-speed and low noise fan for releasing heat. When the temperature rises, the fan automatically switches to high-
speed, it re-back to normal speed at other times to reduce power consumption
£»Indicator for the output balance, as well as status indicators of SIG and CLIP. When there is any signal (>100mV),
the SIG LED lights up. When there is overload, the CLIP LED lights up. If anything abnormal happens to the
circuits, the CLIP LED will be continuously on, with no action from the circuits. This helps the user to determine
which status it is in.
£»White aluminum panels with acrylic presents an artistic and trendy look
£»Solid and durable, can be mounted into a cabinet
£»Manufactured under ISO9001 certified management system

3. CONTROL ELEMENTS

3.1 The Front Panel

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MACRO2400
R R
LTO
POWER POWER
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1. Mains Switch
This switch turns on and turns off the unit by controlling both phases.
2. Power LED
This Power LED lights up when the unit is powered up.
3. Clip LED
The Clip LEDs light up when distortion reaches or exceeds 0.5% approximately, which means the unit is being
driven by excessively high signal source, and you'd better adjust the level control until these LEDs re-eliminated.
Signal Indicator
These Signal Indicators light up when the output is more than 100mV.
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PROFESSIONAL HIGH POWER STEREO AMPLIFIER
PROT PROT CLIP CLIP SIG SIG CLIP CLIP SIG SIG
ON ON
OFF OFF
CH-A CH-A CH-B CH-B
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¡¶ LTO products by purchasing our MACRO 830/1400/2400
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