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Isolators

These products provide transformer isolation between two powered devices, helping to eliminate buzz and hum from ground loops.

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Radial IC-1
R800 1031 00

Balanced XLR Line Isolator

The IceCube is an ideal problem solver for today's AV technicians and audio engineers, providing an easy way to insert an isolation transformer into the signal path to remove hum and buzz from ground loops, with a ground lift switch for additional noise reduction. Simply connect it between any two line-level devices, such as a mixer and a powered speaker, or a crossover and a power amp. The IceCube will eliminate ground loop noise without limiting the audio bandwidth or introducing phase shift, and it can handle hot signal levels without distortion.

Specifications

Audio circuit type Passive, transformer based
Transformer Custom made Eclipse
Number of channels One channel
Frequency response 20Hz - 20kHz (±1dB)
Gain 0dB / -5.7dB 10K / 600 Ω Load
Clip level 25dBu
Total harmonic dirstortion <0.0006% @ 1KHz / -10dBu
Intermodulation dirstortion 0.002% @ -10dBu
Input impedance 8.66k Ohms with 10k Ohms load
Output impedance 600 Ohms, nominal
Equivalent input noise 110dBu
Maximum input 15dBu
Power Passive, no power required

(For full specifications see manufacturers product site under "links" tab)

 

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Radial Twin-Iso
R800 1024 00

Two Channel Line Level Isolator

The Twin-Iso provides a simple and professional way to remove hum and buzz from ground loops by inserting it between any two pieces of balanced audio equipment. It comes equipped with two premium Jensen transformers that deliver exceptional frequency response from 20Hz to 20kHz, with low distortion and the ability to handle high signal levels without saturation - ensuring that the signal integrity of your audio is always maintained. Connect the Twin-Iso between any line-level audio devices, including consoles, amp racks, remote towers, and recorders, and remove ground loops in an instant.

Specifications

Audio circuit type Passive line-level isolation, transformer based
Transformer Jensen transformer
Number of channels 2 channels (dual mono)
Frequency response 10Hz - 50kHz (±1dB)
Dynamic range 135dB
Total harmonic dirstortion 0.001% @ 1kHz / +4dBu output
Phase deviation 37° @ 20Hz; 0.5° @ 100Hz
Input impedance 600 Ohms, balanced
Output impedance 600 Ohms, balanced
Maximum input +21dBu @ 1kHz
Power Passive, no power required

(For full specifications see manufacturers product site under "links" tab)

 

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Radial Pro-Iso
R800 1150 00

+4dB to -10dB Converter and Isolator

The passive design begins with 100% discrete components throughout. A set & forget level control lets you attenuate the input signal to prevent it from overloading the destination device. Output connections include a stereo pair of ¼" connectors, a set of RCAs and a mini 3.5mm (1/8") for interfacing to a mini recorder or lap-top computer. Transformer isolation helps eliminate hum and buzz caused by ground loops while eliminating stray DC currents from flowing.

Specifications

Audio circuit type Passive, transformer based
Transformer Radial transformer
Number of channels 2 channels (dual mono)
Frequency response 20Hz - 18KHz (+0dB/-3dB)
Dynamic range 130dB
Total harmonic dirstortion 0.005% @ 1kHz
Phase deviation 3° @ 20Hz; 1.5° @ 100Hz
Input impedance 1.3k Ohms
Output impedance 1.9k Ohms
Common mode rejection ratio -76dB
Maximum input +20dBu @ 1kHz
Power Passive, no power required

(For full specifications see manufacturers product site under "links" tab)

 

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Radial LX8
R800 8200 00

Rackmount Line-Level Splitter & Isolator

The Radial LX8 is designed specifically to manage balanced signal splitting in professional audio systems. The single rack space design begins with a 100% passive circuit which means it does not require any power to operate. Inside, each of the eight channels is equipped with a premium Jensen® JT-123-SLPC transformer that is able to handle transients in excess of +26dB at all frequencies right down to 20Hz without audible distortion. This results in an accurate signal transfer with minimal phase shift or distortion. When used in larger systems, you benefit from significantly lower noise, making the LX8 the best choice for any demanding multi-channel audio system.

Specifications

Audio circuit type Passive transformer based line level splitter
Transformer Jensen JT-123-SLPC
Number of channels 8 channel 3-way splitter
Frequency response 20Hz - 18kHz (+0dB/-0.1dB)
Dynamic range 140dB
Total harmonic dirstortion 0.003% @ 1kHz
Phase deviation 0.4° @ 20Hz; 0.2° @ 100Hz
Input impedance 600 Ohms, balanced
Output impedance 600 Ohms, balanced
Common mode rejection ratio -85dB @ 60Hz
Maximum input +24dBu @ 20Hz; +26dBu @ 1kHz
Power Passive - no power required

(For full specifications see manufacturers product site under "links" tab)

 

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Radial StageBug SB-6
R800 0160 00

Passive Stereo Line Isolator

The SB-6 helps remove noise from two channel audio systems, stereo guitar racks, and pedalboards. Two on-board isolation transformers provide a flat frequency response from 20Hz to 20kHz, while removing hum and buzz from ground loops. Dual ground lift switches help further reduce noise, and a -15dB pad allows you to handle high volume outputs without distortion. When using the SB-6 before a set of powered speakers or guitar amplifiers, a polarity reverse switch corrects frequency cancellation and ensures both speakers play back in phase with one another. The SB-6 is completely passive with no need for power, so it's easy to insert into any system to remove noise quickly.

Specifications

Audio circuit type Passive, transformer based
Transformer Ecilpse custom
Gain -2dB
Frequency response 20Hz - 20KHz (±1dB)
Dynamic range >140dB
Total harmonic dirstortion <0.0008% @ 1kHz
Phase deviation >5° @ 30Hz
Input impedance Varies with Load
Output impedance 600 Ohms
Maximum input >+25dBu
Power Passive, no power required

(For full specifications see manufacturers product site under "links" tab)

 

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Radial J-Iso
R800 1025 00

Stereo +4dB to -10dB converters and isolator

The passive design begins with 100% discrete components throughout. A set & forget level control lets you attenuate the input signal to prevent it from overloading the destination device. Output connections include a stereo pair of ¼" connectors, a set of RCAs and a mini 3.5mm (1/8") for interfacing to a mini recorder or lap-top computer. Transformer isolation helps eliminate hum and buzz caused by ground loops while eliminating stray DC currents from flowing. Construction begins with 14 gauge steel throughout utilizing Radial's unique bookend construction. This creates a protective zone around the connectors and controls for added durability. The steel construction also assists by shielding the transformers from outside magnetic fields. Inside, the J-Iso features an innovative I-beam skeletal insert that makes it virtually impossible to torque the PC board. This reduces potential stress which could cause premature solder joint failure.

Specifications

Audio circuit type Passive, transformer based
Transformer Jensen JT-11-YMPC
Number of channels 2 channels (dual mono)
Frequency response 20Hz - 20KHz (+0dB/-1.5dB)
Dynamic range 130dB
Total harmonic dirstortion 0.001% @ 1kHz
Phase deviation 1° @ 20Hz; 0.5° @ 100Hz
Input impedance 1.3k Ohms, balanced
Output impedance 200 Ohms, unbalanced
Common mode rejection ratio -58dB
Maximum input +20dBu @ 1kHz
Power Passive, no power required

(For full specifications see manufacturers product site under "links" tab)

 

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