Availability
Audio Isolation Devices
SOTAbeams Inline Audio Ground Loop Isolator
SOTAbeams Inline Audio Ground Loop Isolator can solve some audio problems caused by RF on the line. This is passive audio transformer device that breaks the ground loop that may be contributing to RFI in your receive audio. Here are the particulars: •Ideal for connecting portable devices including smartphones, tablets and laptops to external sound gear •In-line dual isolation transformer eliminates hum, buzz and other noise caused by ground loops, while providing protection to the portable device •Stereo in and out Input: 1 x 3.5 mm male stereo plug Output: 1 x 3.5 mm female stereo jack •Isolation transformer housed in a slim, in-line cylindrical metal enclosure for best shielding •Highly flexible cable is terminated with rugged molded connectors with strain reliefs •Input/output impedance: 600 Ohms - perfect for all line level audio devices •Frequency range: 0 - 0.5dB (input to output), 50 Hz - 20 kHz •Distortion: <0.02% @ 1 kHz, 0 dBu •Cable Length: 11 in. (0.3 m)
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$23.99
bhi Ltd Ground Breaker
bhi Ltd Ground Breaker is an audio pass-through, RF blocking device that can solve the unusual dilemma of distorted audio bleed-through cause by RFI. First, you tried to provide a better ground system, wrapping the audio leads round ferrite rings, clamping ferrite beads onto the cables, running your systems on different power supplies, and you have checked the connections. If RF is still getting into the audio, the Ground Breaker may be the final solution. It totally isolates the ground of your accessory audio equipment from those of the radio system. Ground Breaker units come in impedances covering the main values of 10,000 ohm, 600 Ohm and 8 ohm that are used in most audio systems. Line level units can handle up to 100mW and the 8 ohm speaker units can handle up to 500 mW of audio. The Ground Breaker is simple to install. Simply plug the unit into the appropriate socket on your radio and then plug the audio accessory, such as the DSP or powered speaker into the socket on the Ground Breaker. The direction of connection doesn't matter; the unit works both ways with either the radio or the audio unit connected to the socket or the plug. Do not add extensions and try to keep the leads as short as possible to minimize RF pickup off the air. Sometimes, proper grounding of devices doesn't take care of that one nagging, RF bleed-through problem. In that case, use a bhi Ground Breaker audio RF blocking device from DX Engineering.
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$49.99
bhi LLC1 Stereo Line Level Converter
bhi Ltd LLC1 Stereo Line Level Converter enables you to use powered speakers with your EQ20 audio DSP unit. It converts your bhi EQ20 speaker level audio outputs to line level stereo and isolates the EQ20 Class D audio amplifier stage. This enables the connection of the EQ20 to powered speakers, an amplifier, or recording device. Background: The bhi EQ20 uses a Class D amplifier for efficiency and to reduce the need for heavy metal heatsinking. The only down side is that grounds or speaker outputs cannot be connected together as this may cause damage to the amplifier chip, which means that powered speakers cannot connected directly to the speaker outputs of the EQ20. The bhi Line Level Converter LLC1 converts the speaker level audio output of your bhi ParaPro EQ20 audio DSP unit to an isolated RCA line-level audio signal. This isolates the Class D amplifier stage from the line level output connection enabling powered speakers, an amplifier, or a recording device to be used with the bhi EQ20 unit. The LLC1 can handle the output from class D amplifiers designed for driving up to 10 watts into a standard 4 ohm or 8 ohm speaker. Connections: The LLC1 has an audio lead with two RCA phono plugs at one end for connection to the bhi EQ20 unit, and a stereo 3.5mm (1/8 in.) socket at the other end for the connection to powered speakers, an amplifier, or a recording device.
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$62.99