Stereo Audio/Video Distributor-1x4-Phono Jacks

The RDL FP-AVDA4 is an ultra-compact, all-metal consumer audio/video distribution amplifier designed to route one video source and one stereo audio source to four destinations. Its phono-jack connections support straightforward integration with unbalanced audio and video equipment, while unity audio gain, wideband video response, and output isolation provide professional-quality distribution in a compact enclosure.

Ideal Use Cases

This model is suited to systems that need the same stereo audio and video signals delivered to four separate outputs. It can serve consumer audio/video distribution installations, equipment demonstrations, monitoring arrangements, and other applications built around phono-jack connectivity. The combination of four video outputs and four stereo audio output pairs keeps both program elements together while avoiding the need to split signals with passive adapters.

The FP-AVDA4 is particularly appropriate when space is limited. Its enclosure measures only 1.20 inches high, 3.25 inches wide, and 6.41 inches long, allowing it to fit into compact equipment areas while retaining all-metal construction.

Why Choose This Model

The FP-AVDA4 combines a clear 1×4 distribution layout with defined audio and video performance. The video section uses a phono-jack input rated for 1 V p-p and provides four phono-jack outputs. Its 75-ohm video input and output architecture is complemented by a wideband response that is flat to 10 MHz.

For stereo audio, two input phono jacks accept an unbalanced -10 dBV signal. Eight output phono jacks provide four stereo output pairs. Unity gain preserves the nominal incoming level through the distribution path, while output isolation greater than 45 dB helps separate the four connected output feeds.

Installation and Integration

Connections are organized around phono jacks, making the unit compatible with systems that use this common consumer audio/video connector format. Connect the stereo source to the two audio inputs and the video source to the 1 V p-p video input. The corresponding four stereo pairs and four video outputs can then be connected to the destination equipment.

The audio input presents a 10-kilohm bridging impedance. Each audio output has a 150-ohm impedance and is specified to drive 10-kilohm lines. The video section uses 75-ohm input and output connections. These stated impedances should be considered when selecting cables and connected equipment.

Power is ground-referenced 24 Vdc at 60 mA. The recommended power supplies are the PS-24AS for the USA and the PS-24AX for international use; the power supply is not included. The specified ambient operating range is 0°C to 55°C.

Performance Highlights

• Audio frequency response extends from 20 Hz to 40 kHz within ±0.25 dB.
• THD+N is below 0.05%, with a typical value of 0.01% at 1 kHz.
• IMD is specified below 0.02%.
• Headroom is greater than 18 dB.
• Crosstalk is better than 75 dB from 20 Hz to 20 kHz, with a typical value below -90 dB at 1 kHz.
• Noise is specified below -85 dB relative to -10 dBV.
• Video differential gain is 0.1%.
• Video differential phase is 0.1 degree, measured at 10% and 90% APL.

The audio output level is listed as 10 dBV, and the audio path operates at unity gain. Together with the published distortion, frequency-response, noise, and crosstalk figures, these specifications provide concrete performance criteria for system planning.

What Makes It Different

Unlike a basic passive splitter, the FP-AVDA4 is a powered distribution model with specified output isolation, defined audio drive capability, and four dedicated sets of audio/video outputs. It handles the complete stereo audio and video signal set in one compact device rather than requiring separate audio and video distribution units.

Its combination of a flat-to-10-MHz video path, 20-Hz-to-40-kHz audio response, phono-jack connections, and all-metal construction distinguishes it as a focused solution for consumer-format connections where documented professional performance is required.

Final Assessment

The RDL FP-AVDA4 provides a space-efficient way to distribute one stereo audio and video source to four outputs. It offers dedicated phono-jack connections, unity audio gain, greater-than-45-dB output isolation, 75-ohm video paths, and published audio and video performance measurements. For installations based on unbalanced -10 dBV audio and 1 V p-p video, it delivers a clearly specified 1×4 distribution platform in an ultra-compact metal enclosure.