Devastator LFE build thread - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 16 Old 03-16-2020, 11:36 AM - Thread Starter
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Devastator LFE build thread

Title says it all.
I'm using a lavoce 21",,powered by 1 channel of an fp14000.
Hopefully I've scraped the relevant plan information from the devastator thread as it seems like it is full of variations. If anyone happens to have a more concise plan for the lfe I'd appreciate having it.
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post #2 of 16 Old 03-16-2020, 07:18 PM
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Quote:
Originally Posted by rockironwebb View Post
Title says it all.

I'm using a lavoce 21",,powered by 1 channel of an fp14000.

Hopefully I've scraped the relevant plan information from the devastator thread as it seems like it is full of variations. If anyone happens to have a more concise plan for the lfe I'd appreciate having it.


Latest version of the LFE is found here.
Devastator 21" Finalizer HCR 48"25.5"x34" 16Hz Tune (an optimized LFE)


This, and other versions can be found linked in the first post of the Index thread.

Chris
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post #3 of 16 Old 03-16-2020, 07:21 PM - Thread Starter
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Much appreciated!
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post #4 of 16 Old 03-17-2020, 12:08 PM
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Quote:
Originally Posted by rockironwebb View Post
Title says it all.
I'm using a lavoce 21",,powered by 1 channel of an fp14000.
Hopefully I've scraped the relevant plan information from the devastator thread as it seems like it is full of variations. If anyone happens to have a more concise plan for the lfe I'd appreciate having it.
Welcome to the club of LFE builders..... you are gonna love it....


Juju
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Sub List: 1- Red Five Mini Devastator 18" w/460HO, 1- Red Five Devastator LFE 21", 1- BOSS platform [The Hideaway Theater], 1- 21" "Marty" tuned to 20Hz, 1- 18" "Marty" tuned to 17Hz
Wish List: Anthology http://www.speakerdesignworks.com/Anthology_1.html

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post #5 of 16 Old 03-19-2020, 04:06 AM - Thread Starter
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I was able to get going on making cuts. Every time I build a very large sub I vow that I'm going to buy a high end fence system for the large panel cuts but I never get around to it. I'll end up using 2.5 sheets of MDF just because I like to cut my large side panels at the same time. I put 2 full sheets on the saw horses, get them lined up perfect and run a couple of screws to secure them together. I then use a super straight 1x8 as a guide and a circular saw to cut both sheets at the same time. (I also vow to buy a track saw but it hasn't happened yet)
This takes care of 2 identical cuts and also leaves the remaining sheets to be manageable for the table saw.
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post #6 of 16 Old 03-19-2020, 08:08 AM
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Quote:
Originally Posted by rockironwebb View Post
I was able to get going on making cuts. Every time I build a very large sub I vow that I'm going to buy a high end fence system for the large panel cuts but I never get around to it. I'll end up using 2.5 sheets of MDF just because I like to cut my large side panels at the same time. I put 2 full sheets on the saw horses, get them lined up perfect and run a couple of screws to secure them together. I then use a super straight 1x8 as a guide and a circular saw to cut both sheets at the same time. (I also vow to buy a track saw but it hasn't happened yet)
This takes care of 2 identical cuts and also leaves the remaining sheets to be manageable for the table saw.
If you don't want the cost of a tracksaw (I have an interesting setup developed by a guy years ago under the 'Eurekazone' name), then a clamp on aluminum cutting guide is well worth it. Trying to do this with a piece of lumber is going to be frutstrating! And if you are really serious, take diagonal measurements to make sure you are laid out square.
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post #7 of 16 Old 03-19-2020, 09:34 AM
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I have used an 8 foot level from harbor freight clamped to the board. Works pretty well.
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post #8 of 16 Old 03-21-2020, 07:51 AM - Thread Starter
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I just went with the jigsaw for my baffle cut out. I figured since the driver was hidden there was no need to break out the router and make a jig to get it perfect.
A problem I've had with certain jigsaws is they pile up sawdust onto the line I'm trying to cut, so I like to set up a fan to blow away the dust and keep my line visible.
To get my line I set a screw dead center,, I use a flat metal ruler that has a hole at the end. I mark and drill my radius point just big enough for a sharpie to fit through and pivot the rule around.
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post #9 of 16 Old 03-21-2020, 07:52 AM - Thread Starter
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Don't forget to caulk as you go. I have learned this the hard way.
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post #10 of 16 Old 03-22-2020, 04:01 PM
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Do you have more pictures and impressions?

This is the way...
Stormbreaker | WI HT Meet Thread | The Devastator Index | Dual Mini Devastator Build
7.2.4 | A3070 | XLS 1502 | 3000DSP | 2x Aphex 124A | 2x Bic EV15 | 7x Bic FH6 LCR | 2x Bic FH65-B | Epson 5010e | 120" DIY AT Screen | 2x Mini Devastators
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post #11 of 16 Old 03-22-2020, 08:58 PM
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Quote:
Originally Posted by rockironwebb View Post
I just went with the jigsaw for my baffle cut out. I figured since the driver was hidden there was no need to break out the router and make a jig to get it perfect.
A problem I've had with certain jigsaws is they pile up sawdust onto the line I'm trying to cut, so I like to set up a fan to blow away the dust and keep my line visible.
To get my line I set a screw dead center,, I use a flat metal ruler that has a hole at the end. I mark and drill my radius point just big enough for a sharpie to fit through and pivot the rule around.

I picked up a new dewalt 20v jigsaw recently. It has a jet of air that blows sawdust away from the blade. I think its my favorite new feature.

Chris
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post #12 of 16 Old 03-23-2020, 04:25 AM
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I picked up a new dewalt 20v jigsaw recently. It has a jet of air that blows sawdust away from the blade. I think its my favorite new feature.

Chris
Is it a constant jet of air or in intervals?

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Video Image: JVC RS500- Sony UBP-800X- Chromecast- 125" wide 16x9 white over black spandex screen
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post #13 of 16 Old 03-23-2020, 04:37 AM
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Is it a constant jet of air or in intervals?

It’s constant.

Chris


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post #14 of 16 Old 03-23-2020, 04:41 AM
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It’s constant.

Chris


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Wow, that's very handy! I do struggle with impaired vision due to sawdust building on my cut line. Will you provide a model# or link to your jigsaw.

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post #15 of 16 Old 03-23-2020, 04:48 AM
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Wow, that's very handy! I do struggle with impaired vision due to sawdust building on my cut line. Will you provide a model# or link to your jigsaw.

Speaking of visibility, it shines a light on the line too.

https://www.dewalt.com/products/powe...l-only/dcs334b

Mine was actually a birthday present from my fiance. She isn’t thrilled about the giant subwoofers, but still supports my hobby, lol.

Chris


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post #16 of 16 Old 03-24-2020, 12:33 PM
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Your build thread has been added to the Devastator Index

This is the way...
Stormbreaker | WI HT Meet Thread | The Devastator Index | Dual Mini Devastator Build
7.2.4 | A3070 | XLS 1502 | 3000DSP | 2x Aphex 124A | 2x Bic EV15 | 7x Bic FH6 LCR | 2x Bic FH65-B | Epson 5010e | 120" DIY AT Screen | 2x Mini Devastators
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