These compact switchers allow the user to select one of four stereo, unbalanced, line-level audio sources to a single stereo output using solid-state switching to avoid distortion due to dirty switch contacts. A gain control is provides which may be used to adjust the output level. Models are offered with and without a headphone amplifier, which is fed by the same selector switches. A range of mounting accessories is available for the Radio Design Labs EZ-series.
Discontinued
This is similar to the EZ-HSX4; the front panel is the same except that there are no headphone sockets. The rear panel is also similar to the EZ-HSX4, except that there is no switch to select whether the output is fixed or adjustable; the output is permanently controlled by the level control on the front panel.
Inputs: -10dBV nominal, +10dBV maximum, 10 kohms. Level control: Off to +12dB gain. Response: 10Hz-20kHz +\-0.05 dB. Distortion: Better than 0.03% THD+N. Noise: -80dB referred to -10dBV. Crosstalk: -70dB, 1 kHz. Outputs: -10dBV nominal, +17dBV maximum. Power source: 24V DC, 30mA idle, 60mA maximum. Dimensions: 146 x 76mm (w x d). Mounting size: 1/3 rack width.
Included accessories: PS-24AX-UK AC power adapter with UK AC supply contact-pin assembly.
Optional accessories: PS-24AX-EU AC power adapter with Euro AC supply contact-pin assembly.
EZ-HSX4 - 4x1 - With headphone amplifier
Discontinued
The front panel has four switches to select the input source and a rotary control to adjust the output level. Both 6.35mm and 3.5mm stereo jack sockets are provided for the headphone output, which follows the level set by the rotary control. An LED shows the presence of power. The rear has four pairs of RCA (phono) sockets for the four stereo line inputs and a further pair of similar sockets for the line outputs. A switch selects whether the output will be fixed, so the level control on the front panel only controls the headphone output, or adjustable, in which case the level control adjusts the level of both. A locking co-axial connector provides the power input.
Inputs: -10dBV nominal, +10dBV maximum, 10 kohms. Level control: Off to +12dB gain. Response: 10Hz-20kHz +\-0.05 dB, line output; +\- 1.25dB, headphone output, 100 ohms load. Distortion: Better than 0.03% THD+N, line output; 0.1% THD+N, headphone output, 10 mW, 100 ohms load. Noise: -100dB referred to 10mW output, 100 ohms load, headphone output; -80dB referred to -10dBV, unity gain, variable output; -95dB referred to -10dBV, fixed output. Crosstalk: -70dB, 1 kHz. Outputs: -10dBV nominal, +10dBV maximum, fixed output; +17dBV maximum, variable output; 35mW, 100ohms load, headphone output. Power source: 24V DC, 40mA idle, 50mA maximum. Dimensions: 146 x 76mm (w x d). Mounting size: 1/3 rack width.
Included accessories: PS-24AX-UK AC power adapter with UK AC supply contact-pin assembly.
Optional accessories: PS-24AX-EU AC power adapter with Euro AC supply contact-pin assembly.
EZ-AVX4 – 4x1 – Video and audio
Discontinued
The front panel has four push buttons to select one of the four sources. An LED indicates when power is present. The rear panel has four pairs of RCA (phono) sockets for the connection of the audio sources, and pair of similar sockets for the audio outputs. There are five further RCA (phono) sockets for the four composite video inputs and the selected video output. A locking co-axial connector provides the power input.
Audio Inputs: -10dBV nominal, +10dBV maximum, 10 kohms. Response: 10Hz-20kHz +\-0.01 dB. Distortion: Better than 0.02% THD+N. Noise: -80dB referred to -10dBV. Outputs: -10dBV nominal, +10dBV maximum.
Video inputs: 1Vp-p, 75 ohms. Bandwidth: Greater than 350 MHz. Differential gain: 0.1%. Differential phase: 0.1%. Off attenuation: Better than 40dB, 10M Hz. Noise: -90 dB, referred to 1Vp-p video, 75 ohms. Output: 1Vp-p, 75 ohms. Power source: 24V DC, 85mA idle, 100mA maximum. Dimensions: 146 x 127mm (w x d). Mounting size: 1/3 rack width.
Included accessories: PS-24AX-UK AC power adapter with UK AC supply contact-pin assembly.
Optional accessories: PS-24AX-EU AC power adapter with Euro AC supply contact-pin assembly.
EZ-VM22E - Two outputs – Video, VGA, XGA
Discontinued
This is a computer video source selector and distribution amplifier with two inputs. It is aimed at AV applications in such environments as conference rooms, restaurants and clubs where it is necessary to feed more than one computer monitor or projector from a choice of two computers.
The front panel has an LED to indicate power, two 15-pin HD D-sub connectors for the two inputs each with a switch offering a choice of connecting the local monitor and input ID bits, or not. A 'Sync' switch offers a choice between standard TTL or RGBHV 75 ohm video. A third switch selects which input is fed to the outputs. On the rear, power is connected through a locking co-axial connector. Two 15-pin, HD D-sub connectors offer separately buffered outputs for the local monitor and the second monitor or projector. Two trimmers set the equalisation and gain for the second monitor output.
Inputs: VGA to QXGA RGBHV or RGB with combined sync. Gain: 0dB, local monitor output; 0 to +6dB other output). Equalization (peaking): 0 to +8dB at 50MHz. Video bandwidth: Greater than 470 MHz. Output offset: +\- 5mV typical, 75 ohm load. Sync (HV) input: TTL, 500 ohms or video, 0.7V to 5V p-p, 75 ohms. Sync (HV) output: 5V TTL. Sync (HV) propagation delay: Less than 4nS typical. Sync (HV) rise time: Less than 4nS typical. Sync (combined): Output follows input. Power source: 24V DC, 70mA idle, 80mA maximum. Dimensions: 146 x 127mm (w x d). Mounting size: 1/3 rack width.
Included accessories: HD D-sub input cable, PS-24AX-UK AC power adapter with UK AC supply contact-pin assembly.
Optional accessories: PS-24AX-EU AC power adapter with Euro AC supply contact-pin assembly.
EZ-VM24E - Four outputs – Video – VGA, XGA
Discontinued
This is similar to the EZ-VM22E, but with four 15-pin, HD D-sub connectors offering separately buffered outputs. Two trimmers set the equalisation and gain for the second, third and fourth monitor outputs. Specifications and accessories are the same as the EZ-VM22E, except as follows. Power source: 24V DC, 70mA idle, 90mA maximum.