Inspired by the HEDD AMT headphones, I thought I'll make pair of my own.
It'll be a slow start for sure; I have other projects that needs to be finished first.
I'm not a novice when it comes to DIY AMTs, although this AMT will have different pleat depths in order get a decent bass response together with mids and trebles.
To get that right will definitely be a challenge.
Other challenges are the weight, HEDD's headphones weighs over 700 grams, and the comfort.
So, any initial thoughts?
It'll be a slow start for sure; I have other projects that needs to be finished first.
I'm not a novice when it comes to DIY AMTs, although this AMT will have different pleat depths in order get a decent bass response together with mids and trebles.
To get that right will definitely be a challenge.
Other challenges are the weight, HEDD's headphones weighs over 700 grams, and the comfort.
So, any initial thoughts?
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Check out ESS’s 422H headphones. They sound fantastic and priced very well.
ESS 422H AMT Hybrid Headphones
ESS 422H AMT Hybrid Headphones
Yes, but being hybrids they don't pose that much of a challenge; they're are just AMT tweeters with mid/bass dynamic drivers.
The HEDD way is to vary the AMT pleats's depths and widths to get full range FR.
To do this I'll make a number of membranes with different pleat depth and width, measure their respective FRs and then combine the findings into one membrane.
Here's a tweeter AMT membrane in the making from my work with SLAM:
First step though is to get some magnets: 15x4x4, 20x5x5 and 10x6x6.
With 0.5 mm clearance on each side (back and front), they will fit for membranes with depths 3, 4 and 5 mm respectively.
There's now an acronym for these headphones: SHAM, Solhaga's Head AMt.
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I will go for a two-way system anyway, at least to start with.
That way I can get the mechanics right; model the 3D printed parts and so on.
So, anyone that have any suggestion for a suitable driver?
It does't have to extend that far; I expect the AMT to take over at 300 Hz or so.
I intend to build a headphone pre-amplifier, so the impedance can be quite low.
That way I can get the mechanics right; model the 3D printed parts and so on.
So, anyone that have any suggestion for a suitable driver?
It does't have to extend that far; I expect the AMT to take over at 300 Hz or so.
I intend to build a headphone pre-amplifier, so the impedance can be quite low.
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