Installation – Aphex 188 Eight Channel Mic Preamp User Manual
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188
Installation
3.1 UNPACKING AND INSPECTING
Your Aphex product was carefully inspected and packaged at the factory prior to shipment.
The carton and packing materials are designed to protect the unit during shipment, but you
should inspect the carton and its contents for signs of physical damage before use. It is your
responsibility to file a damage claim with the shipper. We encourage you to save the original
packing materials in case you should ever need to ship this unit out for servicing.
3.2 MOUNTING
The Model 188 occupies 1RU (45mm or 1.75 inches) of a standard EIA equipment rack. Allow
at least an additional 3” to 4” of depth for connectors. Place the Model 188 in the desired rack
space and secure with the cushioned rack screws or equivalent hardware. Don’t position the
Model 188 directly above power amplifiers or power supplies that produce strong hum fields
or heat.
A word on rack mounting and ventilation
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The 188 requires adequate vented air space for proper cooling. What is adequate depends on
the ambient temperature, proximity of other heat producing equipment, and whether the air is
moving or still. It is always best to err on the safe side.
We recommend at least one free rack space be allowed between each 188. The space between
units may be filled with perforated filler panels, but we recommend against solid panels as they
will restrict air flow. In severe cases, such as very hot climates or tight, unventilated closets, a
rack-top exhaust fan may be required to keep the air moving. One of the best ways to know if you
have adequate ventilation for a stack of 188’s is to feel if the top unit’s chassis is substantially
hotter then the bottom unit. If so, you should provide better ventilation.
Ground Loops
The Model 188 uses a standard IEC power cord with a voltage range of 80 -280 VAC. The
appropriate mains plug for each country is normally shipped with each unit. However, if you
must install or replace the plug use the correct wiring code as follows
USA
IEC/Continental
Black = Live
Brown = Live
White = Neutral
Blue = Neutral
Green = Ground
Yellow/Green = Earth
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Aphex Model 188