Radial Engineering TWIN-ISO
Radial Twin Isolator

TWIN-ISO

The Radial Twin-Iso is a balanced 2-channel, line-level isolator that has been specifically developed for professional touring systems as a means to eliminate hum and buzz caused by ground loops when interfacing various equipment such as two consoles, remote towers and drive racks.

Central to the Twin-Iso is the use of world-renowned Jensen audio transformers. These assure the very best signal transfer without distortion caused by saturation or phase shift. All connections are balanced XLR following the AES standard with pin-1 ground and pin-2 hot. To add versatility, a polarity reverse switch is provided for each channel to ensure absolute phase is maintained throughout the audio signal path.

As with all Radial products, the Radial Twin-Iso features a rugged 14-gauge steel construction for maximum durability and to stand up to the rigors of pro-touring. The unique book-end design provides a protective zone for the switches while the full bottom no-slip pad provides plenty of ‘stay-put’ for more active stages. A unique skeletal design features welded I-beam construction, making it impossible to torque the internal PC board, reducing the opportunity for cold solder joints to develop due to outside stress. This unique design also permits up to eight Twin-Isos to be rack-mounted using the Radial J-Rak in just two 19” rack spaces.

Features:

• Isolated XLR connectors to eliminate chassis groundpotential.
• Pair of Jensen audio transformers provide 100%isolation to eliminate hum and noise causing ground loops.
• Military spec PC board with full surface ground planeto reduce susceptibility to RF noise.
• High grade switches - ensure long life and reliableperformance.
• 14-gauge steel welded I-beam construction makes itvirtually impossible to torque the PC board.
• Twin-Iso Input and Output Panels
• LIFT- Ground 'Push to lift' switch lifts pin-1 forboth 'INPUT-1' and 'INPUT-2'.
• INPUT-1 - 600 Ohm balanced input, female XLRconnector, AES standard with pin-1 ground and pin-2 hot.
• INPUT-2 - 600 Ohm balanced input, female XLRconnector, AES standard with pin-1 ground and pin-2 hot.
• Book-end design creates a protective zone around theswitches & connectors – indestructible 14-gauge steel construction.
• Full no-slip rubber bottom pad provides mechanicalisolation, electrical insulation and prevents unit from sliding around.
• Heavy-duty baked enamel finish for excellentdurability and great looks for years!
• OUTPUT-2 - Isolated 600 Ohm balanced male XLR outputconnector; AES standard with pin-1 ground and pin-2 hot.
• 180 - Polarity Reverse phase reverse switch for'OUTPUT-2'.
• OUTPUT-1 - Isolated 600 Ohm balanced male XLR outputconnector; AES standard with pin-1 ground and pin-2 hot.
• 180 - Polarity Reverse phase reverse switch for 'OUTPUT-1'.

Specifications:

• Input impedance: 716 Ohms
• Insertion loss: 1.6dB (w/600 Ohm load)
• Voltage gain: -1.6dB
• Deviation from linear phase: +.03/-0° (20 Hz to 20kHz, 0 dBu)
• Frequency response: 10Hz to 80kHz
• Distortion (THD): <0.001% (1kHz, +4 dBu)<0.025% (20kHz, +4 dBu)
• Maximum signal handling: +20.5dBu (20Hz, 1% THD)
• Common-mode rejection ratio (CMRR): 94dB (60Hz)
• Output impedance: 116 Ohms
• Size (H x W x D): Size (H x W x D): 2” x 3.25” x 5”
• Weight: 1.95 lbs / .9 kg
• Construction: 14-gauge steel chassis & shell,baked enamel finish
• Warranty: 3 years on device, 20yrs on Jensen transformers

Our Part #  TWIN-ISO