Whirlwind ISO1 User manual

ISO1
www.whirlwindusa.com
6 3
9 2 4 6 5 0 1 9 3 2
Made In USA
ISO1
®
Single channel line level
transformer isolation
Use with both ¼” and XLR
connectors
Insert in line to combat hum and
noise in audio signals
Convert unbalanced audio
signals into balanced lines for
long cable runs
1:1 turns ratio input to output
+20 dB max signal level

www.whirlwindusa.com
®
The Whirlwind ISO1 is a high quality line level audio
transformer device. Use it on console outputs, amplifier
input feeds or any line level signal for transformer isolation
and ground lifting to overcome buzz and hum problems. Use
it as a balancer to convert between balanced XLR and
unbalanced 1/4” signals. The ISO1 uses Whirlwind's TRSP-
600L transformer with a frequency response of ±1 dB from 20
to 20 kHz at +20 dBm input level.
IN AND OUT JACKS
Either of the two input and output connectors, XLR or ¼” TRS
jack (Tip = Pin 2, Ring = Pin 3) can be used for connection to
line level signals. The two input jacks are connected in
parallel with each other, as are the two output jacks. Use
only one connector on each side at a time.
GROUND LIFT SWITCH
This switch disconnects the ground between the input
connectors and the output connectors when set to the LFT
position. The ground is connected through when the switch is
in the GND position.
Whirlwind Music Dist., Inc.
99 Ling Road
Rochester NY 14612
Whirlwind will, at its
option, repair or replace
the unit. This warranty does
not cover damage resulting
from abuse, unauthorized
modifications or use of the
product in unintended
applications.
This product is warranted
to be free of defects in
materials or workmanship
to the original purchaser
for a period of 3 years from
the date of purchase.
Should warranty service be
required, return the unit
postage paid along with the
original sales receipt to: