Enhanced Sound for Your VW T4: New Speaker Adapters for the Dashboard

We are excited to introduce our latest speaker adapters for the VW T4 with a soft dashboard. These adapters enable a direct alignment of the midrange and tweeters toward the listener, ensuring an unaltered audio experience.
Free Download Until February 28, 2025
Until February 28, 2025, we offer you the opportunity to download the print files for the speaker adapters for free. Starting March 1, 2025, the download will be available for 10 euros.
No 3D Printer? No Problem!
For those who do not own a 3D printer, we offer the finished speaker adapters in our shop.
Technical Details for 3D Printing
- Print Volume: At least 165 x 165 x 165 mm
- Wall Lines: Minimum of 4
- Infill: Grid pattern with at least 15%
- Recommended Slicer: Orca
- Layer Height: 0.16 - 0.2 mm
- Material: ASA, PC, or ABS
Why Direct Speaker Alignment?
Direct alignment of midrange and tweeters toward the listener offers several advantages:
- Direct Sound Path: Minimizes distortion and ensures clear audio reproduction.
- Directional Effect: Increases sound energy towards the listener for a balanced sound.
- Avoidance of Phase Issues: Reduces unwanted reflections and interference.
- Improved Stereo Imaging: Allows for more precise localization of instruments and vocals.
- Reduction of Sound Coloring: Prevents unnatural sound alterations caused by reflections.
With our speaker adapters, you will enjoy an optimized audio experience in your VW T4.
For more information and to download, visit our website.
Related products

If you want to improve the sound in your vehicle in a targeted way, these speaker adapters for the dashboard offer a practical solution. By aiming the speakers towards the passenger compartment, playback of midrange and treble in particular can be improved. The speaker adapters are manufactured unfinished and are made of black polycarbonate plastic. Speaker adapters for the dashboard – painting The adapters can be painted. Solvent-based paints or acetone should be avoided, as these can attack the polycarbonate. Use of acrylic paints is recommended. For an even surface finish, pre-treatment with filler is recommended. Speaker adapters for the dashboard – wrapping Alternatively, the adapters can be wrapped with different materials. Depending on the desired look, e.g. textiles or synthetic leather are possible. Technical information: Maximum diameter of the speaker mount: approx. 104 mm Diameter of the pass-through: approx. 94 mm Tested with speaker: Ground Zero GZTF 4.0X, 100 mm, 2-way coax Scope of delivery: 1 × speaker adapter 100 mm, left 1 × speaker adapter 100 mm, right Please note: 1. The speaker adapters are available in two versions – suitable for soft or hard dashboard. Please select the correct variant. 2. No speakers are included. Installation: The adapters are fastened from below through the existing openings in the dashboard: – soft dashboard: 2 × M4 screws – hard dashboard: 4 × M4 screws (Screws not included) Installation guide: A detailed guide is available in the Delta Garage Wiki.
Available, delivery time: 1-3 days

The speaker adapter suitable for VW T4 with soft dashboard (100 mm) is provided as a digital download. The download includes detailed STL, OBJ and 3MF files as well as notes for processing in the slicer. The project consists of two parts (left and right). 3D printing requirements Minimum build volume: 165 × 165 × 165 mm Wall lines: at least 4 Infill: grid, at least 15% Recommended print settings Slicer: Orca Layer height: 0.16–0.2 mm Material: ASA, PC or ABS Note on the digital product This item consists exclusively of digital 3D printing files. No physical product will be delivered. Disclaimer for 3D printing files The provided 3D printing files are made available by Delta Garage UG (haftungsbeschränkt). No liability is accepted for damage arising from the use or inability to use the files. This includes, among other things, damage to the 3D printer, material loss, malfunctions, faulty print results or failure to achieve a successful print. The user is responsible for checking before use whether the files are suitable for their 3D printer, the selected material and the intended application. No specific function, suitability or durability is warranted. By purchasing and downloading, the user expressly agrees to these conditions and indemnifies Delta Garage UG (haftungsbeschränkt) against any claims arising from the use of the files.






