Guitar Pedalboard IO Enclosures – TRS, XLR & Power

This is a set of modular-style IO enclosures I designed for my pedalboard. Each part mounts underneath the board and helps cleanly route audio and power connections.

These are partial enclosures — backs are open to make wiring easier and reduce print time. You mount them directly using M3 brass inserts and standard 3mm bolts (8mm length).

📦 Included STL Files (5)

1. XLR_Dual_Power_Deep.stl

   Dual XLR output + IEC (computer-style) power socket

   ➤ With extended rear section behind power (approx. 58mm depth)

2. XLR_Dual_Power_Flat.stl

   Same layout as above

   ➤ No rear extension behind power (flush with XLRs, 26.5 mm depth)

3. XLR_Dual_Only.stl

   Dual XLR out enclosure with no power socket

   ➤ Great if you already have power handled elsewhere

4. TRS_Single_Input.stl

   Mountable enclosure for a single locking TRS jack (mono or stereo input)

5. Power_Lid_Rect_Hole.stl

   A simple lid (rectangle with center hole) to optionally hot glue on to the deep power enclosure

🛠️ Recommended Print Settings

• Layer height: 0.2 mm (used for all loops)
• Infill: 15% is more than enough
• Supports: Only where needed (under connector cutouts, but I think I printed as-is)
• Material: PLA or PETG recommended (I used PETG)
   

🔩 Mounting Info

• M3 brass inserts are used in the printed mounting holes (heat-set or press-fit)
• 3mm bolts, 8mm long — used to mount connectors (like XLR/TRS) and fasten enclosures to your pedalboard
• All necessary holes are pre-designed — just drop in the insert and you’re good to go

🔌 Parts I Used

The XLR and TRS connectors used in this build are the exact ones I personally purchased and installed, all available from Sweetwater. You can find the links below. The power socket was something I had lying around at home, so I’m not sure where to get the exact same one

• 1/4" TRSF Panel Mount Connector

  https://www.sweetwater.com/store/detail/WCQFC--whirlwind-wcqfc-letter-c-labeled-1-4-trsf-panel-mount-connector

• Switchcraft E3MSCB Panel Mount XLR Male Connector

  https://www.sweetwater.com/store/detail/XLRMPanConSw--switchcraft-e3mscb-panel-mount-xlr-male-connector

   

💡 Notes

• These are meant to be screwed underneath a pedalboard, not full desktop enclosures
• The design makes wiring fast and flexible — access everything from the front, no need to close the back
• Lid is optional and only for the deep power version — you can glue it in or leave it open