User manual

CONTROLS:
ISOLATION TRANSFORMER UNIT
Pro Co Sound
225 Parsons Street | Kalamazoo, MI 49007
800-253-7360
www.procosound.com »
PARALLEL LINE IN/OUT:
Male and female 3-pin XLR-type connectors wired in parallel
to two 3-conductor 1/4” (6.3mm) phone jacks accepts signal
from low-impedance (0 ohm nominal) line-level source
to provide simple connection and loop through for any
combination of XLR connectors and 2- or 3-conductor phone
plugs. Input impedance (with 600 ohm load on ISO OUT):
approx. 680 ohm.
ISO OUT:
Male 3-pin XLR-type connector or 3-conductor 1/4” (6.3mm)
phone jack provides oating transformer-isolated low-
impedance output to feed line-level input. Recommended
load impedance: 600 ohm.
GND/LIFT:
GND position connects pin 1 (and jack sleeve) of LINE IN/
OUT to pin 1 (and jack sleeve) of ISO OUT. LIFT position
“oats” ISO OUT. Used to reduce hum and buzz by eliminating
ground loops and providing proper grounding for various
conditions.
IT1
APPLICATION INFORMATION
UNBALANCED OR
ELECTRONICALLY
BALANCED SOURCE
REQUIRING ISOLATION
1/4" (6.3mm)
2- or 3-COND.
PHONE PLUGS
XLR
FEMALE
BALANCED OR
UNBALANCED LOAD
MIXER
EQUALIZER
POWER AMP
CROSSOVER
P
ARALLE
L
LINE IN/OUT
ISO
OU
T
G
ND
LIFT
ISO
OU
T
MIXER
EQUALIZER
POWER AMP
CROSSOVER
KEYBOARD
MIXER
EQUALIZER
CROSSOVER
ISOLATED
BALANCED OR
UNBALANCED
LOAD
1/4" (6.3mm)
2- or 3-COND.
PHONE PLUGS
XLR
FEMALE
XLR
MALE
SIGNAL PATH
MICROPHONE CABLE (Balanced)
PATCH CABLE (Balanced/Unbalanced)
INSTRUMENT CABLE (Unbalanced)
IT1 PARALLEL LINE IN/OUT
IT1 ISO OUT
OUTIN
BASIC IT1 HOOKUP