Verum Audio - Exciting high performance DIY planar

As a bilingual working (with very slow progress and no real impetus) on two other languages intermittently, I agree that you really shouldn't worry too much about what you say so long as people understand where you're coming from, accent or no. People here know you're a cool dude and that you're genuine about the hobby, so aces to ya.

On another note, holy f**k that's an impressive array of stuff. If you choose to go at this manually (in the strictest sense of the word), then you'll have some serious upper-body strength to fall back on if anyone talks crap about your stuff

 

*mumbles something about heat treatment while shaking hammer at the forge*

 

@Lyer25 - it's 0,8mm of steel. You could bend it with 1 finger if you have appropriate lever.
@Taverius - yep, I need to perform annealing before bending. And then hardening after bending.

 

I assume I can loosen the tension by bending it if the grip is too tight for my big head?

 

No, you can't. Hardened steel cannot be deformed after hardening. But in construction of Verum 1 possibility to change tension force is envisaged. Unscrew top nut - and here you go, several fixed positions to choose from.

 

tempering after hardening. But why start with it springy? Turn it into springy after forming?

Refer internet: heat treatment of steel

Or just ask @Taverius.

 

Then I hope it's wide enough. The Abyss even at it's widest wasn't enough so I had to bend it a bit. Several audeze got the same tough love because they clamped way to hard for my liking. LCD-4 got its carbon fiber headband molested to improve comfort. Hopefully you have some big pumpkins for trial.

 

You can't really sell fully annealed sheet steel.

The realities of the production process aside, its too soft and deforms plastically way too easily.

Also its worse than that, as hardening is change in temperature over time dependant and can't be precisely controlled due to things like how liquids change phase in contact with superheated metal, and also the thickness of the material (inside cools slower and will be softer).

So first you anneal to soften, then you form, then you harden more than you need, then you soften again till its just right.

Though for headband you might be able to condense in one step, it's thin enough.

This has been an emergency blacksmith ramble, we now return to your scheduled programme.

 

This episode of Forged in Fire brought to you by SBAF...

Seriously though, interesting info (IMO) if slightly off topic...thanks!

 

And so good to know we have an emergency blacksmith on hand

 

The metallurgist in me wants to find just the right temperature cooling profile in order to achieve the strength to flexibility ratio you want (i.

The mechanical engineer in me says that's all too fickle and time consuming, so find the simplest heat treatment or purchase pre-treated, then use tooling to create ridges in the band to adjust the tension.

 

Its (heavily) dependent on the orientation of the piece and currents in the fluid, because any red-hot metal immersed in fluid for quenching will be entirely covered in leidenfrost effect film boiling.

At least with any fluid I have access to, who knows what neat shit @Garuspik has access to.

 

Oh, I've made 6 attempts till I've managed to receive headband parts with exact resilience I need.
And now a paper with detailed technological process where heat treatment is described is one of the most precious design documents

 

I bet that beats trial and error, one by one, hands down!



.

 

I tried water and oil, but such thin and long pieces of metal were deformed heavily. So I make hardening in vacuum. I think this is called vacuum furnace in English.

 

Wow, so the heat treatment profiling was actually cheaper than a mechanical solution? I would have thought the time required for heat treatment would be more than the machining costs.

What's the order of operations here... buy the steel, cut/stamp out the bands, bend to shape, then heat treat?

 

@Garuspik, If it's not trade secret (seriously consider that!) then I guess that a lot of us would luuurve a video of the manufacturing process.

 

I know I'd like to see that.

 

I have to say out of everything there is to be read in this hobby, @Garuspik your thread is by far my favorite. Keep up the excellent work! Looking forward to more updates from you and bits an pieces of your manufacturing process both past and present!

An a question, maybe a refresher as it's been a while since I read past posts.

But how many pads variants do you have out there atm? An what effect do you feel each has on the overall sound.

 

3 variants. Difference - as usual with planars, pad rolling affects region above 1 khz. So I mus choose between darker full bodied sound with rather narrow sounstage or brighter pads with wide soundstage but with less presence.