PreMax™ Preamp and EQ
True to the Music
®
Radial Engineering Ltd.
4
MAKING CONNECTIONS
As with all audio equipment, always ensure levels are turned down and equipment is turned
off before making any connections or inserting the PreMax into a 500 series power rack. This
common practice ensures turn-on transients will not damage more sensitive components such
as tweeters.
Slide your PreMax module into the 500 series power rack until the card-edge on the board is
fi rmly seated into the slot connector on the main board. Care should be taken when inserting
the module to maintain correct alignment of the card-edge with the connector. After inserting
the PreMax into your 500 series rack, secure it using the supplied machine screws to ensure it
does not accidentally become dislodged during use. To prevent damage to the power rack, do
not over-tighten the mounting screws.
Most 500 series racks are equipped with balanced XLR connectors. When you insert the
PreMax into your 500 series rack it will automatically route the rear panel XLR connections to
the module’s input and output. This is augmented with ¼” TRS connectors if using the PreMax
in a Radial Workhorse 500 series power rack. The PreMax follows the AES standard with pin-2
(+) hot, pin-3 (-) cold. Most devices are wired this way but older vintage equipment should be
checked to confi rm compatibility with AES standards.
Connect a microphone or direct box to the PreMax input using a standard XLR patch cable. If
you are using a condenser microphone or active direct box, turn on the 48V phantom power.
The switch is recessed to prevent accidental turn on. Use a small screw driver or paper clip to
push in the switch. A red LED will illuminate when phantom power is active.
Rear panel mic input and line output.
Radial Workhorse 500 rack.
INPUT
OMNIPORT
FEED
LINK
1
OFF
OFF
CARD SLOT 1
OUTPUT
OUTPUT
INPUT
Connect the line-level output of the PreMax to your audio system so that you can audition the
PreMax. We recommend that you fi rst listen to the PreMax on its own before combining with
effects or other signal processors until you have had a chance to familiarize yourself with the
preamp and equalizer functions. Using your own voice to test is best, as it gives you a familiar
starting place.
g
g
