Firefl y™ Tube Direct Box
True to the Music
®
Radial Engineering Ltd.
4
MAKING CONNECTIONS
Before making connections, always ensure all levels are turned down or equipment is turned
off. This will help you avoid turn-on transients that could harm more sensitive components
such as tweeters from being damaged.
Connect the power supply to the Firefl y. This mid-cable supply is equipped with a 4-pin XLR
connector at one end and a universal IEC connector at the other end. The power supply will
accept input voltages from 100V to 240V thus enabling the Firefl y to be used in countries around
the world. It comes with the appropriate power cable to comply with local electrical systems.
Start by setting theTRIM A & B controls and the LOW-CUT fi lter fully counter-clockwise to the
7 o’clock position (minimum setting). Set the DRAG control about halfway to the 12 o’clock
position and ensure the ON button is set to the inward position. Set the master LEVEL control
to the 2 o’clock position.
MIN
MAX
MIN
MAX
TRIM-A
TRIM-B
MIN
MAX
LOW CUT
DRAG
MIN
MAX
LEVEL
Cable connections are made at the rear panel. Connect the instrument to INPUT-A using a
standard ¼” guitar cable. Connect the XLR output to your mixing desk or preamp using a
standard XLR cable. Make sure the three rear panel recessed switches are in the outward
position by checking with a tweaker or small screwdriver.
Test at low volume
You are now set to start testing audio. Always test at a low volume fi rst before turning up. This
will help you avoid loud transients from damaging more sensitive components. Turn up the gain
on your mixing desk or preamp to a low level. Set the input SELECT button to input-A. The LED
will illuminate to show you which input is active. Slowly increase the input TRIM-A until you
reach a comfortable listening volume. If you like, plug in your second instrument and adjust
the TRIM-B to match. Simply depress the AB selector switch to toggle between instruments.
