LTA Headphones

by Tomislav Liber

A modular, open hardware framework for high-end headphones

View all updates Nov 18, 2020

Additional Design Improvements

by Tomislav Liber

This update continues our look at small design improvements to the headphones not present on the prototypes, but which will be on the production models. As promised last week, the main hinge yoke designs have been finalized, again by utilizing laser cutting to manufacture small, precise metal pieces that can be combined with 3D printed plastics in order to improve the performance and feel of the hinges. These design changes affect both the V1 and V2 3D printed models, but not the V2 CNC machined model.

Hinges - As mentioned in the last week’s update, the 3D printed headband sliders will have M3 grub screws permanently screwed and glued to them for ultimate durability. These screws will then attach onto the V1 and V2 hinge yokes through a specially machined nut and two laser cut stainless steel plates.

The upper plate will be have a dual function. It will be permanently glued into the designed socket on the plastic yoke to provide a perfectly flat, very solid, smooth platform for the bottom of the plastic headband slider to sit on. This will provide very smooth rotation and prevent wear. In addition, it has an aesthetic purpose, as it will be brushed to the exact same surface finish as the stainless steel plates on the sliders themselves presented last week. This stainless steel detail will give the hinge assembly an additional touch of quality.

The bottom plate will be permanently glued into the designed socket on the bottom side of the hinge yoke, providing additional stability to the plastic part in an area of high stress, and providing a flat, smooth platform for the nut to sit on. The nut itself is a specially machined, round slotted nut perfect for such applications. It’s only 2.5 mm high with a 6 mm diameter, so it doesn’t take any more space than a regular screw head would. At the same time, it can be easily removed which eliminates the need to unscrew the grub screw from the slider itself. The nut will be held in place with industrial thread locking adhesive for additional security and the surface between the nut and the stainless steel plate will have damping grease applied to it, to ensure smooth rotating action, similar to that found on volume pots.

Hinge yokes – The LTA V2 3D printed yokes will be additionally mechanically improved with laser cut stainless steel inserts. The purpose of these inserts is to provide extra rigidity to the yokes in the front-back direction relative to the ear cups and to prevent even the slightest deformation during under extreme loads. While the yoke’s carbon fiber reinforced plastic is very durable in itself, adding these steel plates will increase the rigidity by about 40%, depending on the direction of the load, while increasing the weight by less than 10%, so it’s a good trade-off. The cost of production of these steel plates is insignificant as well at less than $1 per unit.

About the Author

Tomislav Liber

TomislavLTA


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$340

LTA V1 SLS Carbon DIY Kit

Includes unique LTA-designed components unavailable elsewhere. Produced using state-of-the-art additive manufacturing technologies and the most advanced materials available in the industry, together with special fasteners required to assemble the headphones, as well as acoustic treatment accessories. We will provide documentation to help you paint your LTA Headphones.


$610

LTA V1-R SLS Carbon Headphones (Pre-built)

A fully built and tested LTA V1 headphone, containing all of the components from the DIY kit. The V1-R is a version with the Elleven Acoustica R1 drivers, original L-cushion ear pads and the LTA cable. The R1 drivers are a perfect choice for those looking for a neutral sound leaning towards an analytical side, with a focus on delivering the highest possible amount of detail and clarity. Headphone parts are meticulously post-processed by hand to one of the offered surface finishing options. Sorry, our pre-built LTA V1-R SLS Carbon Headphones are available to US backers only.


$640

LTA V1-P SLS Carbon Headphones (Pre-built)

A fully built and tested LTA V1 headphone, containing all of the components from the DIY kit. The V1-P is a version with the Elleven Acoustica P1 drivers, original L-cushion ear pads and the LTA cable. The P1 drivers are a perfect choice for those looking for a neutral sound leaning towards a euphonic side, with a slighlty warmer and fuller sound character than the V1-R. Headphone parts are meticulously post-processed by hand to one of the offered surface finishing options. Sorry, our pre-built LTA V1-P SLS Carbon Headphones are available to US backers only.


$500

LTA V2 SLS Carbon (or CNC Machined) DIY Kit

Includes unique, LTA-designed components unavailable elsewhere. Produced, using state-of-the-art SLS and MJF additive manufacturing technologies, out of the most advanced materials available in the industry. (Also available with CNC Machined components!) A full kit, containing special fasteners required to assemble the headphones, a pair of headphone drivers, appropriate high-quality ear pads, and acoustic treatment accessories. We will provide documentation to help you paint your LTA Headphones if you opt for the unfinished, SLS Carbon components.


$650

LTA V2 SLS Carbon Headphones (Pre-built)

A fully built and tested LTA V2 modular headphone, containing all of the components from the DIY kit, including the removable LTA cable. Hinge yokes, frames and headband pieces are meticulously post-processed by hand to one of the surface finishing options available. In addition to that, these components are entirely compatible with all future updates the V2 platform will receive, as well as with the V3 platform, enabling V2 owners to build the V3 model in the future for a considerably smaller investment by reusing more than half of the headphone components. Sorry, our pre-built LTA V2 SLS Carbon Headphones are available to US backers only.


$875

LTA V2 CNC Machined Headphones (Pre-built)

The ultimate version of the LTA V2 modular headphones, containing CNC-machined aluminium components in combination with state-of-the-art, additively manufactured components reinforced with carbon fiber. Designed to showcase materials and build quality that rival considerably more expensive headphones, this model features CNC-machined sliders and ear-cup grills with a satin, brushed finish and an engraved LTA logo. It also includes anodized headband slider sockets and hinge yokes. All CNC-machined components except for the ear-cup grills will be compatible with subsequent LTA Headphones designs, such as the work-in-progress LTA V3. Sorry, our pre-built LTA V2 CNC Machined Headphones are available to US backers only.

Credits

Tomislav Liber

A long-time audiophile, headphone fan and DIY-er, looking for ways to make unique and innovative products.


Tomislav Liber

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