Dunavin’s OTop 8 build
Re: Dunavin’s OTop 8 build
Woofer spacers
Nothing a little belt sander can't fix
Could not be happier with the progress tonight! I test fit the pieces and everything fits reaaal nice!
Actually fit so good, i was able to pick it up as seen here.
I will have to do a bit of clean up on the edges were the woofer holes meets the horn. Nothing a Dremel tool can do.
Should look like a could of speaker boxes tomorrow.
I set these down and put some 5 lbs weights on them, but they slid PL works really good
Nothing a little belt sander can't fix
Could not be happier with the progress tonight! I test fit the pieces and everything fits reaaal nice!
Actually fit so good, i was able to pick it up as seen here.
I will have to do a bit of clean up on the edges were the woofer holes meets the horn. Nothing a Dremel tool can do.
Should look like a could of speaker boxes tomorrow.
2 - OTop8
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
Re: Dunavin’s OTop 8 build
A few more photos.
Test fit all the driver hardware, before glueing the top and bottoms, glued top, bottom and horn sides. I did the horn to side braces after the fact, so I could trim to fit.
Tacked on the skill saw guide and trimmed off the horn sides, not as smooth as I was hoping for, should if used a better blade, nothing some wood filer and black paint can’t fix. And finally test fit the sides! Starting to look like something!
Test fit all the driver hardware, before glueing the top and bottoms, glued top, bottom and horn sides. I did the horn to side braces after the fact, so I could trim to fit.
Tacked on the skill saw guide and trimmed off the horn sides, not as smooth as I was hoping for, should if used a better blade, nothing some wood filer and black paint can’t fix. And finally test fit the sides! Starting to look like something!
- Attachments
-
- D0D31614-A119-4E1F-A551-23469DACF037.jpeg (46.85 KiB) Viewed 133722 times
-
- E3083830-52E7-4E00-BF67-2F11A4DBE031.jpeg (37.75 KiB) Viewed 133722 times
-
- A2F04F92-39B5-48CC-A5B2-15E2983E2912.jpeg (29.92 KiB) Viewed 133722 times
-
- D7009DB4-CB34-458C-85B6-440E46816FD1.jpeg (39.9 KiB) Viewed 133722 times
-
- EAA23AE5-42A6-4EC5-A965-6CCCE005B1E7.jpeg (32.36 KiB) Viewed 133722 times
-
- 9C5BE1AE-CAF9-416B-AD7F-5DEB3FB3D8AB.jpeg (41.51 KiB) Viewed 133722 times
-
- AE063D61-58EA-4344-AF22-B71A6AD3B2DE.jpeg (28.58 KiB) Viewed 133722 times
-
- 40161737-ADAE-431F-96AE-797F85CB5207.jpeg (64.46 KiB) Viewed 133722 times
2 - OTop8
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
Re: Dunavin’s OTop 8 build
I enjoy the pictures, looks really good. Wish I had a table saw with a sled.
Advanced Concepts Underground Audio
Re: Dunavin’s OTop 8 build
Awwwwww heck yeahhhhhh!!!
Coming together with a swiftness
Coming together with a swiftness
Build in process - 2 WH6, one Alpha 6a loaded, one PRV Audio 6MB250-NDY loaded
Two 2x6 shorty SLA Pro's
One T39, 16", 3012LF loaded
Tall AutoTuba, 20" wide, 2x 8" MCM 55-2421
TruckTuba, 8½" wide, 2x 8" MCM 55-2421
Two 2x6 shorty SLA Pro's
One T39, 16", 3012LF loaded
Tall AutoTuba, 20" wide, 2x 8" MCM 55-2421
TruckTuba, 8½" wide, 2x 8" MCM 55-2421
Re: Dunavin’s OTop 8 build
Thanks!
You should make your own sled! There are a ton of how to videos out there. Those rails are just “T slot” rails from McMaster Carr, and some 1/4 -20 bolts with plastic knobs that have a 1/4-20 insert, so I can hold stuff down.
It was really cheap to make and it’s getting pretty beat up, so I don’t feel bad about making a new one… mostly from scraps I already have.
2 - OTop8
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
Re: Dunavin’s OTop 8 build
Ugh, nothing like a deadline to kick things into high gear.
I have a minimum amount of Birch though so I really have to measure like three times and make sure I’m making the right cuts.
Now is not the time for a mistake
Edit.. I also had played with cut list to make sure I was maximizing T39 width for the four sheets of 5’x 5’ birch I bought. With the scraps I have plus the full sheets, I should be able to get two 20” cabs. Was previously planning on two 18” wide. Not sure if that’s a audible difference, but every inch counts I suppose.
2 - OTop8
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
-
- Posts: 8325
- Joined: Fri Nov 27, 2009 11:37 am
- Location: New Braunfels, TX
Re: Dunavin’s OTop 8 build
Excellent work! Looking good.
6 - T39 3012LF
4 - OT12 2512
1 - T24
1 - SLA Pro
2 - XF210
"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."
Re: Dunavin’s OTop 8 build
Thanks Bruce!
2 - OTop8
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
Re: Dunavin’s OTop 8 build
I know there were some other threads and people who built them. However, I don't recall whether there was an actual build thread that went along with any of them. It may be you're right! (my memory is failing too LOL)
Edit to add: Just did a more thorough search and didn't find a single one. Joe! You're the first! By the way, did you decide to take on using the adjustable top hat's?
Edit to add: Just did a more thorough search and didn't find a single one. Joe! You're the first! By the way, did you decide to take on using the adjustable top hat's?
Build in process - 2 WH6, one Alpha 6a loaded, one PRV Audio 6MB250-NDY loaded
Two 2x6 shorty SLA Pro's
One T39, 16", 3012LF loaded
Tall AutoTuba, 20" wide, 2x 8" MCM 55-2421
TruckTuba, 8½" wide, 2x 8" MCM 55-2421
Two 2x6 shorty SLA Pro's
One T39, 16", 3012LF loaded
Tall AutoTuba, 20" wide, 2x 8" MCM 55-2421
TruckTuba, 8½" wide, 2x 8" MCM 55-2421
Re: Dunavin’s OTop 8 build
I wish I was the 1st, but this guy built a pair along with some T48s. I messaged him and he’s loving them.
viewtopic.php?f=30&t=25234&start=45
I really wanted to go for the fatal pro drivers, but that would have been some serious cash.
Seth, I thought about the adjustable top hats, they would have been cool, but they are actually hard to find now and I figured it was one more thing to break.
Anyway thanks for the comments! These are lots easier than DR200s
viewtopic.php?f=30&t=25234&start=45
I really wanted to go for the fatal pro drivers, but that would have been some serious cash.
Seth, I thought about the adjustable top hats, they would have been cool, but they are actually hard to find now and I figured it was one more thing to break.
Anyway thanks for the comments! These are lots easier than DR200s
2 - OTop8
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
Re: Dunavin’s OTop 8 build
I just read that thread! Thanks Grey Owl for commenting on it! That thread became first for reading when I logged in.J_Dunavin wrote: ↑Mon Apr 11, 2022 10:44 pm I wish I was the 1st, but this guy built a pair along with some T48s. I messaged him and he’s loving them.
viewtopic.php?f=30&t=25234&start=45
TomS
Re: Dunavin’s OTop 8 build
Practiced cutting out the throat reflectors tonight, not fun but I think I have a decent path for cutting the 65 deg angle.
Also glued the sides on! Looks like a box now… all down hill after these throat pieces.
Also glued the sides on! Looks like a box now… all down hill after these throat pieces.
2 - OTop8
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
Re: Dunavin’s OTop 8 build
Don't try this at home kids! I made the large angle cut by flipping the piece up 90deg and then tilting the blade over 25 deg. I made the pieces larger than i needed and made this cut first as i had to make several passes. Then i came back, measured the distance to the other cut and made it since it can easily be made with the fence.
I also cleaned up the inside corners where the back plate doublers are going.
I also cleaned up the inside corners where the back plate doublers are going.
2 - OTop8
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
Re: Dunavin’s OTop 8 build
Real nice fit. Looks great
Build in process - 2 WH6, one Alpha 6a loaded, one PRV Audio 6MB250-NDY loaded
Two 2x6 shorty SLA Pro's
One T39, 16", 3012LF loaded
Tall AutoTuba, 20" wide, 2x 8" MCM 55-2421
TruckTuba, 8½" wide, 2x 8" MCM 55-2421
Two 2x6 shorty SLA Pro's
One T39, 16", 3012LF loaded
Tall AutoTuba, 20" wide, 2x 8" MCM 55-2421
TruckTuba, 8½" wide, 2x 8" MCM 55-2421