OmniTop 12 build

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Fastskiguy
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Joined: Tue Dec 20, 2011 8:11 pm

OmniTop 12 build

#1 Post by Fastskiguy »

The journey starts! This isn't gonna be fast but hopefully we'll make it all the way :)
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Clef's of Bass
Posts: 60
Joined: Sat Dec 26, 2020 4:21 pm

Re: OmniTop 12 build

#2 Post by Clef's of Bass »

layout looks good!

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Tom Smit
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Joined: Sat Jan 05, 2008 1:24 pm
Location: Sarnia, Ont. Canada

Re: OmniTop 12 build

#3 Post by Tom Smit »

Enjoy your journey!

I have the same earmuffs at work. I like them.
TomS

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Clef's of Bass
Posts: 60
Joined: Sat Dec 26, 2020 4:21 pm

Re: OmniTop 12 build

#4 Post by Clef's of Bass »

Tom Smit wrote: Tue Jan 24, 2023 10:45 pm Enjoy your journey!

I have the same earmuffs at work. I like them.
I use the 3M muffs. Has AM/FM and bluetooth. They get a lot of use during garage/ shop time and yard work.

Fastskiguy
Posts: 176
Joined: Tue Dec 20, 2011 8:11 pm

Re: OmniTop 12 build

#5 Post by Fastskiguy »

I was hesitant to share this picture because it will make any flaw completely unacceptable given the equipment I was able to access....but what the heck, I'm a beginner. Main panels are cut!
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Seth
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Location: Sacramento, California, USA
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Re: OmniTop 12 build

#6 Post by Seth »

:clap:
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

CarterKraft
Posts: 255
Joined: Thu Oct 22, 2020 1:46 pm
Location: DFW

Re: OmniTop 12 build

#7 Post by CarterKraft »

Very nice
Weldon Carter

jimbo7
Posts: 849
Joined: Fri Dec 28, 2012 10:45 am
Location: St. Louis

Re: OmniTop 12 build

#8 Post by jimbo7 »

Compression drivers or tweeters?
BFM builds:
XF212
T24 BP102 24"
2x SLA's 6-5" mids, 9- gt-302's
2x AT 14" MCM 55-2421
TrT 5" MCM 55-2421
AT 18" JBL GTO804
2x OT12 flat array
2x SLA Pro 2-Alpha 6's 2-Goldwoods
2x T39 24" 3012lf
Simplex 10 BP102

Fastskiguy
Posts: 176
Joined: Tue Dec 20, 2011 8:11 pm

Re: OmniTop 12 build

#9 Post by Fastskiguy »

I'm gonna try for that cross firing tweeter array. I made two TLAH and two SLAs so wiring them up should be not terribly different. At least that's the current plan!

Joe

Fastskiguy
Posts: 176
Joined: Tue Dec 20, 2011 8:11 pm

Re: OmniTop 12 build

#10 Post by Fastskiguy »

Is the jigsaw the thing to use cutting out the baffle? Mine tore the crap out of the plywood.....it was a mutiliation. I'm going to give it a bit of bondo or something but whoa! Maybe it's a blade issue? I just used whatever I found rattling around at the bottom of the case, not sure what it was made for (It looked sharp)

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Tom Smit
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Re: OmniTop 12 build

#11 Post by Tom Smit »

A jig saw can be used. A fine-toothed blade will produce better results but will take longer to make the cut, as opposed to a coarse tooth blade. What a bunch of people do is cut about and 1/8" away from the cut line, and then use a powered router to bring the cut to the line by using a guide.
TomS

Fastskiguy
Posts: 176
Joined: Tue Dec 20, 2011 8:11 pm

Re: OmniTop 12 build

#12 Post by Fastskiguy »

Spent some time making a couple of router jigs for circles. These worked pretty well.
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Fastskiguy
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Re: OmniTop 12 build

#13 Post by Fastskiguy »

Tom Smit wrote: Sat Jan 28, 2023 1:10 am A jig saw can be used. A fine-toothed blade will produce better results but will take longer to make the cut, as opposed to a coarse tooth blade. What a bunch of people do is cut about and 1/8" away from the cut line, and then use a powered router to bring the cut to the line by using a guide.
Ah now that is a good idea, thanks :)

Fastskiguy
Posts: 176
Joined: Tue Dec 20, 2011 8:11 pm

Re: OmniTop 12 build

#14 Post by Fastskiguy »

Making faster progressed than planned and...for the most part...it's going well. But the baffle....oh boy, I'm looking forward to taking another crack at this someday on speaker #2. I have a question about the little lip that is shown in the arrows below...should I take a rasp or file or something and trim back the baffle until it is flush with the horn panels and throat reflectors or is that lip OK? Thanks guys :)

Joe
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Bill Fitzmaurice
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Re: OmniTop 12 build

#15 Post by Bill Fitzmaurice »

That lip is far too small to have any effect. Anything less than a quarter wavelength in dimension is invisible to sound waves. A quarter wavelength at 2kHz is 1.9 inches.

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