Custom 3.5mm TRS Y-Splitter Cable for Timecode & Scratch Audio

Custom 3.5mm TRS Y-Splitter Cable for Timecode & Scratch Audio

Posted by CHENGJIAXIN on

One 3.5mm Input, Two Independent Signal Channels

For professional camera and audio workflows, a standard 3.5mm Y-splitter is not always enough. When different signals need to be routed through the Tip and Ring channels independently, the internal wiring must match the specific application.

For this custom cable, the customer required a right-angle 3.5mm TRS male connector connected to two straight 3.5mm TRS female sockets, with each female socket carrying an independent channel rather than a duplicated stereo signal.

The final configuration was designed for a compact camera-rig setup where timecode and scratch microphone audio are routed through separate channels.

Custom Wiring for Independent Channel Routing

The key requirement was the channel assignment:

  • Tip / Left Channel → Timecode
  • Ring / Right Channel → Scratch Microphone
  • The two female sockets are wired as independent channels
  • The two outputs do not simply duplicate the same stereo signal 

This customized wiring allows the two connected sources to use separate signal paths through the 3.5mm TRS connection.

The wiring configuration was confirmed with the customer before production to ensure it matched the intended microphone and timecode workflow. 

Color-Coded Female Outputs

To make the two channels easier to identify during production, the customer requested different housing colors for the female connectors.

  • Left / Tip Channel: Black housing
  • Right / Ring Channel: Red housing

The red housing provides a quick visual reference for the scratch microphone channel, helping reduce the chance of connecting the two sources to the wrong output during a fast-paced shooting setup.   

Compact Right-Angle Design

The cable uses a right-angle, non-locking 3.5mm TRS male connector on the camera side and two straight 3.5mm TRS female sockets on the output side.

With a final total length of 20 cm including the connectors, the cable provides a compact connection between the camera and external audio/timecode sources while helping keep the rig organized.

Alvin’s Cables also offers customized cable lengths and connector configurations for professional camera and production equipment. 

Final Custom Specifications

Specification

Custom Configuration

Cable Type

3.5mm TRS Y-Splitter / Custom Audio Cable

Plug A

Right-Angle 3.5mm TRS Male

Plug B

2 × Straight 3.5mm TRS Female

Wiring

Independent Tip / Ring Channels

Tip / Left Channel

Timecode

Ring / Right Channel

Scratch Microphone

Left Output Housing

Black

Right Output Housing

Red

Cable Color

Red

Total Length

20 cm / 7.9 in, including connectors

 

 

Built for Professional Camera Workflows

This project demonstrates how a conventional connector combination can be adapted to a specific production workflow through custom wiring, connector selection, and physical identification.

At Alvin’s Cables, custom cable projects can be configured around the equipment, connector type, pinout, cable length, and application requirements. Each custom request is reviewed for connector compatibility, wiring requirements, and production feasibility before manufacturing.

Every cable is also tested before shipping to check for issues such as short circuits and potential breakdown problems.

Need a custom audio, timecode, power, or camera cable?
Send us your equipment models, connector requirements, wiring/pinout, cable length, and any reference photos or diagrams. Our team can review the requirements and help develop a cable for your specific production setup.

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