Even better! Again, SB seems to have better sensitivity and higher Le which suite passive design well.
Been outta hifi scene for a while, missed this project too.
So Next project some phonebooth sized?
Im thinking to relax 2019 summer too, started this thing 2018
So Next project some phonebooth sized?
Im thinking to relax 2019 summer too, started this thing 2018
Hi, sorry to say that I have no plans bubbling in my head. Perhaps a second pair of these for my elder son.
I 100% agree with you., it's the worst instructions ever, a complete horror show.
I bought 2 x FA122 plate amps almost two years ago to replace my failed Digidesign/PMC amps and still cannot work out how to get a simple 2 way config with a crossover at 3khz to get them going.
Wasted my money and learnt my lesson.
I had an opprotunity for some indoor measurements again and some fine tuning of dsp. The room is unfortunately quite problematic with hard walls and strong modes. However they sound really good, two ears and brains will get accustomed to room acoustics better than a single mic!
Hypex FA123 amp/dsp boards have had power on for some 3½ years now, without problems.
Hypex FA123 amp/dsp boards have had power on for some 3½ years now, without problems.
LR2 version with a little different eq settings and different Y-scale
Picture story of the project here https://photos.app.goo.gl/6AYTfK2GbPwogdbw6
Picture story of the project here https://photos.app.goo.gl/6AYTfK2GbPwogdbw6
Did you manage to kill those high frequency resonances with the PEQ or the high order crossover? Looks really nice. The end grain in particular is to die for.
Cone resonances of midrange? Felt pads on edges of cone and some eq of first peak. Acoustic response is more like Duelund/elliptic at 3kHz which is fine. And because the ball is tilted, on-axis is actually almost 10deg off. The dip at 14kHz varies a lot with angle too, typical for cheap coaxials. Original MR18 uses silk dome, but my final version has aluminium.
I must work on this still, and on WM delay settings to get better match. Problem for that is indoor measurements... even indoor ground plane doesn't give clean impulse with gating long enough. Several different measurement setups are needed, but I don't know when that's possible...
I must work on this still, and on WM delay settings to get better match. Problem for that is indoor measurements... even indoor ground plane doesn't give clean impulse with gating long enough. Several different measurement setups are needed, but I don't know when that's possible...
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I've been thinking about next speaker project for next spring-summer... I feel like it should be dsp-active 3-way with coaxial MT, again.
Coaxials have unmatched directivity characteristics vertically with no comb filtering and time alignment corruption. This gives them best possible imaging and uniform sound enywhere in the room. Woofer xo around Schröder 400Hz with capable closed box woofer(s) and that's it. Speakers will be a gift for my eldest son who likes heavy metal, so bass quality is very important too. I will discuss the size and shape limits with him and me might make boxes himself. Hypex FA series dsp-amps.
So - 5-6" or 10-12" mid? I'd like to try a pro coaxial this time... with 2x12" woofers? Baby slim version of Taipuu?
Coaxials have unmatched directivity characteristics vertically with no comb filtering and time alignment corruption. This gives them best possible imaging and uniform sound enywhere in the room. Woofer xo around Schröder 400Hz with capable closed box woofer(s) and that's it. Speakers will be a gift for my eldest son who likes heavy metal, so bass quality is very important too. I will discuss the size and shape limits with him and me might make boxes himself. Hypex FA series dsp-amps.
So - 5-6" or 10-12" mid? I'd like to try a pro coaxial this time... with 2x12" woofers? Baby slim version of Taipuu?
If you haven't seen the Bitches Brew by Perry Marshall, I highly recommend checking it out. Not a cheap project, but the parts and assembly are top notch. Your project and his are both serious inspirations for my own designs.
Check new PHL 2534Mdn from tlhp. Flat suspension coax with flat magnetic system to get better cone and compression driver alignment.
A link to my new thread, Big coaxial 3-way
https://www.diyaudio.com/community/threads/big-coaxial-with-rcf-cx12n251.393313/#post-7203199
https://www.diyaudio.com/community/threads/big-coaxial-with-rcf-cx12n251.393313/#post-7203199
Here are the speakers at their end user's room today five years from finishing. The TV is 50".
Room has concrete walls so low modes are terribly strong and also positioning is restricted. But they look nice and sound good. No need for subwoofers, but notice how different is the low bass of left vs. right speaker.
Room has concrete walls so low modes are terribly strong and also positioning is restricted. But they look nice and sound good. No need for subwoofers, but notice how different is the low bass of left vs. right speaker.
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The Hypex FA123 of the R speaker broke recently. No visible injuries on caps but most likely it is on SMPS which is integrated on NC122MP board. Fortunately I have another pair with two years younger FA123 so I swapped them and revised firmware and settings. Old boards were covered with grey fabric, now they are on top of it for better cooling.
I set WM xo a bit lower to 200Hz, MT is still 3kHz, both LR2. I measured new settings first lying on the floor/mic on floor to get xo and EQ right. Then room response side by side at R location.
I set WM xo a bit lower to 200Hz, MT is still 3kHz, both LR2. I measured new settings first lying on the floor/mic on floor to get xo and EQ right. Then room response side by side at R location.
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