CI-2RR
Jensen...The Worlds Finest Audio Transformers
CI-2RR Two channel ground isolator
•
•
•
•
Eliminates hum and buzz caused by ground loops
Extended frequency response from 10 Hz to 40 kHz
Less than 2° phase deviation at 20 Hz
Plug and play easy to use – no power required
Dimensions
( FRONT )
L
IN
R
L
OUT
R
4.32”
(109.7mm)
( BOTTOM )
The Iso-Max® CI-2RR is a passive two channel audio ground isolator
designed to eliminate hum and buzz caused by ground loops in the most
demanding audio systems.
The unbalanced stereo design begins with gold RCA connectors to ensure
optimal signal transfer. These are housed in a rugged steel enclosure that is
fitted with screw-down flanges for easy installation in racks, under shelves
or attached to cabinetry. The magic inside comes from two high performance Jensen Transformers that deliver pristine audio from 10 Hz to 40 kHz
with less than 1 dB of deviation, less than 0.05% harmonic distortion and
less than 2° phase shift at all frequencies. The transformer is shielded in a
mu-metal can to protect against external magnetic fields and prevent “spectral contamination” due to ultrasonic and RF interference. This assures your
music will be faithfully delivered without distortion, coloration or artifact no
matter what the program material or signal level.
These features makes the CI-2RR the perfect choice for 2 channel audiophile systems, home theater, Hi-Z recording sound cards, car audio and any
other unbalanced audio signal.
3.63”
(92.2mm)
( TOP )
.75”
(19mm)
2”
(50.8mm)
( REAR )
2.6”
(66mm)
.710”
(18.0mm)
1.45”
(36.8mm)
Applications
CI-2RR in a HI-FI system
Connect the CI-2RR in between your
preamp and power amp to eliminate noise
without affecting the signal quality. The
CI-2RR’s exceptional frequency response,
phase accuracy and signal handling makes
it perfect for high-end 2 channel systems.
CI-2RR in a home theater
Combining video and audio together in
home theater setups can often lead to
noise. The Iso-Max CI-2RR solves the problem by isolating the video playback system
from the multi-channel audio system,
eliminating the hum and buzz caused by
ground loops and DC offsets.
Jensen Transformers Inc., 9304 Deering Ave. Chatsworth, CA 91311
P: (818) 374-5857 F: (818) 374-5856 [email protected]
CI-2RR in a your car
Car audio enthusiasts know the challenges
of ground hum polluting their audio.
Turning up the volume only amplifies the
problem. Isolating the radio/receiver from
the power amp eliminates buzz caused by
ground loops. The CI-2RR does it perfectly
without affecting the performance.
jensen-transformers.com
CI-2RR
Jensen...The Worlds Finest Audio Transformers
1.0
THD at FIXED INPUT LEVELS
THD+N (%) vs FREQUENCY (Hz)
1.0
THD at FIXED FREQUENCIES
THD+N (%) vs INPUT LEVEL (dBU)
+19 dBu
0.1
0.1
20Hz
30Hz
+10 dBu
0.01
0.01
50Hz
+4 dBu
0.001
20
200
REFERENCE LEVEL RESPONSE
2K
20K
0.001
AMPLITUDE (dB) vs FREQUENCY (Hz)
+1
-25
-20
-15
-10
-5
DEVIATION FROM LINEAR PHASE
-0
+5
+10
+15
+20
+25
DEVIATION (Deg) vs FREQUENCY (Hz)
+5
+4
REF
+3
-1
+2
-2
+1
0
-3
-1
-4
-2
Low frequency data
augmented with use of
Hewlett-Packard 332A
Frequency Synthesizer
-5
-3
-4
-6
0.2
2
20
200
2K
PARAMETER
20K
200K
CONDITIONS
Input impedance, Zi
1 kHz, +4 dBu, test circuit 1
Insertion loss
1 kHz, +4 dBu, test circuit 1
Magnitude response, ref 1 kHz
Deviation from linear phase (DLP)
Distortion (THD)
-5
20
MINIMUM
TYPICAL
MAXIMUM
47.0 kΩ
48.6 kΩ
50.0 kΩ
0.82 dB
1.0 dB
20 Hz, +4 dBu, test circuit 1
-0.15 dB
-0.03 dB
±0.0 dB
20 kHz, +4 dBu, test circuit 1
-1.0dB
-0.70 dB
±0.0 dB
20 Hz to 20 kHz, +4 dBu, test circuit 1
+1.4/-0°
±2.0°
1 kHz, +4 dBu, test circuit 1
<0.001%
20 Hz, +4 dBu, test circuit 1
Maximum 20 Hz input level
1% THD, test circuit 1
Common - mode rejection ratio (CMRR)
200
0.04%
+17 dBu
60 Hz, test circuit 2
Zi
IN
Zi
85 dB
Allowable source impedance
(output impedance of device driving the ISO-MAX input)
0
600 Ω
Allowable load impedance
(input impedance of device loading the ISO-MAX output)
10 kΩ
47 kΩ
Allowable load capacitance
(cable & input capacitance loading the ISO-MAX output)
0
50 pF
100 pF
input
3 m (10’)
8 m (25’)
output
1 m (3’)
3 m (10’)
0°C
any input to any output shield or any shield to case, 60 Hz
OUT
Zo
47k
SS
600
4.65 kΩ
Input to Output Voltage Difference*
600
95 dB
1 kHz, test circuit 1
operation or storage
Test Circuit 1:
Test Circuit 2:
3 kHz, test circuit 2
Temperature range
20K
0.10%
+19 dBu
Output impedance, Zo
Optimal cable length
2K
IN
OUT
47k
SS
2 kΩ
70°C
24 V RMS
34 V peak
All levels are input unless noted, +4 dBu = 1.23 V RMS
All minimum and maximum specifications are guaranteed. Unless noted
otherwise, all specifications apply at
25°C. Specifications subject to change
without notice. All information herein
is believed to be accurate and reliable,
however no responsibility is assumed
for its use nor for any infringements of
patents which may result from its use.
No license is granted by implication or
otherwise under any patent or patent
rights of Jensen Transformers, Inc.
*IMPORTANT NOTE: THIS PRODUCT IS NOT INTENDED FOR USE IN CIRCUMSTANCES WHERE THE DC OR PEAK AC VOLTAGE
BETWEEN INPUT AND OUTPUT CONNECTIONS EXCEEDS 34 VOLTS OR WHERE ITS FAILURE COULD CAUSE INJURY OR DEATH.
Jensen Transformers Inc., 9304 Deering Ave. Chatsworth, CA 91311
P: (818) 374-5857 F: (818) 374-5856 [email protected]
jensen-transformers.com