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Unpacking
The Studio 12R box should contain:
1. The mixer itself
2. A packet of literature along with this manual
3. An AC power cable
4. An Alesis warranty card
Please send in your warranty card right away. Your warranty is not registered
with Alesis until the card is returned. Please save your sales receipt as your ultimate proof
of purchase and warranty date. By sending in your warranty card, you will receive the
Alesis First Reflection magazine free of charge, and we will be able to notify you of special
programs and offers from Alesis. Should repair ever become necessary, having the unit
registered will make it faster and easier to obtain service.
Note that the warranty is valid only in the country of purchase; i.e., units purchased in the
United States must be serviced in the United States.
AC power
READ ALL SAFETY WARNINGS IN THE PREVIOUS SECTION OF THIS MANUAL
TO ENSURE SAFE OPERATION OF THIS UNIT. Connect the Studio 12R to the
specified power using the AC cable supplied with the unit. The AC cable is removable. If
the distance to your AC outlet is longer or shorter than the supplied cable, you may
substitute an approved standard NEMA-to-CEE power cable of the correct length, available
from most electronics stores.
Grounding
CONNECT THE STUDIO 12R TO A PROPERLY GROUNDED OUTLET ONLY. DO
NOT USE ADAPTERS WHICH REMOVE THE SAFETY GROUND PROTECTION OR
CUT OFF THE GROUNDING PRONG ON THE POWER CORD. Proper grounding is
essential for user safety and low noise. If you experience 60-cycle hum in your sound
system as a result of different ground potentials between different units in your system,
plug all units into the same AC circuit (if the total power load allows) and make sure other
devices in the system are properly grounded themselves. The Studio 12R features balanced
inputs and outputs, so if it is properly connected to other balanced units, AC ground
potentials will not affect the audio. If you cannot get rid of ground loops, consult a
professional electrician familiar with sound system power designs.
Use clean power
The Studio 12R's internal power supply is designed to filter out most AC line noise.
However, it is still good practice to plug your sound equipment into an AC circuit that is
not shared with lighting dimmers, refrigerators, air conditioning units, or other appliances
that may induce noise into the power system.
Studio 12R Reference Manual
I
NSTALLATION
Installation
7
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