I wanted to describe something I worked on improving on the the new horn CD transition from 1" to rectangular. I was reading about waveguides and the benefits of using an oblate spheroidal shape, so I made an aluminum template which I used to form the curve. the throat was cut to 0.707" entry and drilled out with a 1" forstner bit. Some additional removal was needed to get the curve in, which ends right before the mid ports. As this is entirely experimental I am hoping this will help not hinder the HF response.
update
Hi all,
Its been a while since I worked on this project, took a break from speaker building to spend time with family, also enjoying the unity horns after getting the crossovers dialed in. I have ordered extra drivers I need and hopefully will have everything soon to put these beasts together. Remaining work is polishing horns, fitting drivers, finishing the back panels and wiring.
-NJ
Hi all,
Its been a while since I worked on this project, took a break from speaker building to spend time with family, also enjoying the unity horns after getting the crossovers dialed in. I have ordered extra drivers I need and hopefully will have everything soon to put these beasts together. Remaining work is polishing horns, fitting drivers, finishing the back panels and wiring.
-NJ
It would take a while and make your hands tired, but a "nibbling tool" might be a safer way to do it without damaging the driver.
https://www.google.com/url?sa=t&source=web&rct=j&url=http://www.adelnibbler.com/&ved=0ahUKEwiwguPctcDKAhUOx2MKHf3WC-oQFgh1MAw&usg=AFQjCNG5-h6_BZIsp-mhV_bdmREYpEwoGA&sig2=jUorObTuFvFr5pucbi7wHw
https://www.google.com/url?sa=t&source=web&rct=j&url=http://www.adelnibbler.com/&ved=0ahUKEwiwguPctcDKAhUOx2MKHf3WC-oQFgh1MAw&usg=AFQjCNG5-h6_BZIsp-mhV_bdmREYpEwoGA&sig2=jUorObTuFvFr5pucbi7wHw
Or worse, long term! I attribute my arthritis mostly to the probably many hundreds of hours spent nibbling away sheet brass, alum., copper of various thickness up to the tool's max to make all manner of electronics, and especially slot car chassis, parts over right at five decades before my hands said ENOUGH, ALREADY!
GM
Well folks, I decided finally to get these assembled after staring at them for a year wasting space in the basement. I am starting with assembling the main cabinets with the 15", 10" drivers and adding a baffle to mount Dayton PS220-8's to create a sealed enclosure for them where the horns will be eventually be - until/if/when I get around to finishing the horn sections. Looking forward to setting up a simple notch filter in MiniDSP / Harsch crossover.
Finished with 8" fullrange drivers
They are finally assembled with Dayton 8 inch fullrangers in place of the synergy horn, for now. I reconfigured the minidsp and measured with REW, did a few tweaks. They sound great. Now, to cleanup the mess, it never ends...
They are finally assembled with Dayton 8 inch fullrangers in place of the synergy horn, for now. I reconfigured the minidsp and measured with REW, did a few tweaks. They sound great. Now, to cleanup the mess, it never ends...
Attachments
Construction video, comments
I found this video clip I recorded back when I was constructing these cabinets.
Don't build anything like these unless you are not planning on moving them. They are "semi" portable - meaning I will need a block and tackle and a Semi to get these out of the basement. I contemplated making the bass cabinets separate and now am regretting not doing that to some extent.
I found this video clip I recorded back when I was constructing these cabinets.
Don't build anything like these unless you are not planning on moving them. They are "semi" portable - meaning I will need a block and tackle and a Semi to get these out of the basement. I contemplated making the bass cabinets separate and now am regretting not doing that to some extent.
Here is a video I posted on these demonstrating them:
https://www.facebook.com/nathaniel.jones.927/videos/1403189779768512/
https://www.facebook.com/nathaniel.jones.927/videos/1403189779768512/
Well, as fate has it, we are moving. The moving company is going to have fun with these...
Project update
Hi all,
Since we moved I was able to get these setup and tuned somewhat. I took advantage of PE sale on Dayton D250-P compression drivers, and installed the horn sections without the mid or woofer drivers for now. I set the minidsp up with crossover points at 70hz and 1200hz, and the lower pair of tens cut the highs at 250 hz, similar to a 2.5 way. The best sound to date on this system!
Hi all,
Since we moved I was able to get these setup and tuned somewhat. I took advantage of PE sale on Dayton D250-P compression drivers, and installed the horn sections without the mid or woofer drivers for now. I set the minidsp up with crossover points at 70hz and 1200hz, and the lower pair of tens cut the highs at 250 hz, similar to a 2.5 way. The best sound to date on this system!
Attachments
Project update
Installed the mid-range and mid-woofers onto the horns, and getting them assembled now. a few hours of wet sanding and polishing the horns made a difference in the appearance. Next step is wiring the amps and configuring the minidsp.
Installed the mid-range and mid-woofers onto the horns, and getting them assembled now. a few hours of wet sanding and polishing the horns made a difference in the appearance. Next step is wiring the amps and configuring the minidsp.
Attachments
- Status
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