More progress on speaker is posted in original thread:
https://www.diyaudio.com/community/threads/cheap-and-fast-ob-literally.249984/post-6971724
They are almost completed and will be delivered tomorrow. 🙂
https://www.diyaudio.com/community/threads/cheap-and-fast-ob-literally.249984/post-6971724
They are almost completed and will be delivered tomorrow. 🙂
A review of the Signature 50 speakers that I designed for LSA just came out.
https://www.tonepublications.com/review/the-lsa-signature-50-speakers-2/
https://www.tonepublications.com/review/the-lsa-signature-50-speakers-2/
The new slot loaded dipole speakers have been delivered. They look great.
More info here:
https://www.diyaudio.com/community/threads/cheap-and-fast-ob-literally.249984/page-21#post-6971724
More info here:
https://www.diyaudio.com/community/threads/cheap-and-fast-ob-literally.249984/page-21#post-6971724
I hope the side pannels are removable, otherwise its will be pain to mount the woofers.
Looking forward to the progress.
Looking forward to the progress.
Yes, hence the square drive head screws that fasten them to the ledger strips. Otherwise the drivers would be almost impossible to install. The other way would be to make the woofer manifold removable but we decided to glue that to the baffle for the stiffest structure.
It is not as big or imposing as I thought it would be. In person, it is quite compact and very livable in size and presence. Takes up 12in x 14in of floorspace and is 45in tall. I need to stain this before I go too much farther because once I install the drivers, the activation energy to remove them and do the stain and finsih work is tremendous.
"Activation energy" - somehow, I know what you mean.
When I look at them, my mind want to put a top on the woofer "half", then you can set any type of speaker on top, keeping the unique OB bass. Including the upper structure as-is, but assembled with a baseboard. I like the removable baffle, encouraging to try different "top" drivers / sets via easy swap-out.
When I look at them, my mind want to put a top on the woofer "half", then you can set any type of speaker on top, keeping the unique OB bass. Including the upper structure as-is, but assembled with a baseboard. I like the removable baffle, encouraging to try different "top" drivers / sets via easy swap-out.
Yes, the “tops” you can try out are limitless. Could even be a large 8in full range driver. Or a small DML, or a large single planar, etc. This was a prototype and as such, I am not fully committed to choice of mid range of mid bass driver yet. I am exploring 5FE100 vs 6FE100. Both excellent drivers. I can also see a single TB W5-2143 as being very nice too.
When I referred to it as "monstrous" I meant its likely sound impact. Obviously it's a svelte looking unit. 😉
I applied a cost of boiled linseed oil. The color and depth looks great. I was hoping to achieve an antiqued mahogany finish and I think this is going to work out well.
#000 steel wool sanding and then second coat of BLO. Let dry for 45min and wipe off. I’ll repeat this again tomorrow and that should be the final finish with 3 coats of BLO. The finish looks deeper and deeper with each coat. After the oil has been wiped off a few hours later I rub it down with brown paper bags crumpled up into a ball for a buff.
Great work X! Looking forward to seeing the final measurements…compact floor print indeed!
Best,
Anand.
Best,
Anand.
Thanks, Anand. I’m getting closer to installing the 8 woofers and taking a frequency sweep. This is going to tell us a lot about how to approach the crossover frequency, slope and what to set the sensitivities of the mid and tweeter. Someone wants me to take a sweep with and without the wings. I can tell you, the wings make a big difference on the lower frequency.
That someone is me, but no pressure.
I'm curious because I am a bit far from building my own open baffle, and you have everything ready, including the measuring setup!
What I'd do as tests is remove the wings and use them to test extending the front baffle. For me this is the Zen of OB: driver and only front baffle, minimal support for standing, driver not near edge.
I'm curious because I am a bit far from building my own open baffle, and you have everything ready, including the measuring setup!
What I'd do as tests is remove the wings and use them to test extending the front baffle. For me this is the Zen of OB: driver and only front baffle, minimal support for standing, driver not near edge.
Last bit of sanding down with #000 steel wool dipped in BLO. This is the final coat and I should be done with the finish work now. Install drivers tomorrow!