Devastator V1 Build In Detail - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 19 Old 11-09-2019, 01:41 PM - Thread Starter
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Devastator V1 Build In Detail

Main goal of this build thread is to lay out the build process in detail with tons of pics. I have already completed the build and now putting it all together. Might take some time but should be done soon.

First off, Devastator as the name suggests produces devastating bass and is one of the best subs I have had. If you want a sub that hits you straight in chest and produces oh so so clean bass, this is it. Now here is amazing part about all this. When it comes to producing roaring bass, it delivers. It just does it so very well. I haven't had many subs in my HT journey but I have had 5 different ones and Devastator outshines them by miles. Plus I tinker a lot to get the sound I want and Dev V1 delivers and delivers plenty with great satisfaction. I call Dev V1 the MidBass monster. Will post more impression as we move along.

So that out of the way, I have build so far 2 Dev V1. Made some mistakes and also made one bad build and realized half way thru and stopped it and started another one from scratch. When I decided that I wanted to build it, I realized that there weren't many build thread on it and specifically a thread that could go in detail on how to put it all together for someone who doesn't have much expertise like me in building subs. I have built 1 sub from scratch before and created the thread with intention to help others to built their first DIY sub. Here is the link that thread. https://www.avsforum.com/forum/155-d...ld-newbie.html. I was looking for similar thread but couldn't find one. What I did have though is great support for guys like @Red Five , @superkyle , @a77cj7 and others from main thread but a very very special thx to @hd0823 . Thx to him, I discovered Devastator sub. Plus He was very helpful in the whole build process. We had many phone conversations/txts and he's just genuinely a very good person.

Finally, special thx to @LTD02 for bringing this amazing sub to our life. Even the build thread I linked above is his design that he shared with me The guy is just super talented

So now the Build Thread Starts.

I'm not going to cover what material to buy. You can find all that info on the main thread's first post here https://www.avsforum.com/forum/155-d...l#post57227752. Scroll down to where the cut sheet is.
Note: If you are using Plywood instead of MDF, the cut list will be just a tiny different as highlighted in RED the in post linked above. So keep that in mind. I decided to go with plywood instead of MDF because I wanted to use R3 Kreg jig. This tool costs only $30.00 but speeds up the whole process. Some here didn't even use any clamp throughout the build process because of Kreg jig. I did use the clamp though in certain cases but Kreg jig just made it much quicker to move to next step.

Tools:
1 - R3 Kreg jig
2 - Kreg screws

2 - Circular Saw + Circular Saw guide (see PA460 guide for detail on it if you aren't sure which one to get).
3 - Glue (attach image or link here)
4 - Gloves (https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1 )
5 - Driver: LaVoce SAN214.50 21" Neodymium Subwoofer 8 Ohm https://www.parts-express.com/lavoce...8-ohm--293-732
NOTE: Search for coupon on main thread on it and use it to get discount

This is a 21" driver. Its BIGGGGG.




There are many approaches you can take to build it but the one I took seems to be the simplest one and has been used by many.

Step 1: Cut all the pieces and label them according to how its labeled in 1st post of original thread. This will help find the pieces. NOTE: the cut list has many 2x4 small pieces. Again 2x4 pieces.. I didn't realize that they were 2x4 pieces and I cut them using plywood which trust me was a LONGGGG process since I had to make sure of width and height. Don't make that mistake. You just need to go buy 2x4 and just work on the length based on the cut sheet. Here I'm shoing pieces cut for 2 Devs.



Step 2: Attach Top and Back pieces. When attaching pieces, make sure that they are all 90 degrees with each other. Use L Shape Scale if you have to make sure they are all 90 degrees (https://www.amazon.com/Timiy-Stainle...3332901&sr=8-5. I got mine from Home depot. Always use Kreg to first screw the pocket holes in one of the piece. In this case, since top piece is going to sit on top of bottom, screw the pocket holes on top piece that connect to bottom.




Continue ....
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Last edited by harrisu; 11-10-2019 at 12:30 PM.
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post #2 of 19 Old 11-09-2019, 02:00 PM - Thread Starter
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post #3 of 19 Old 11-09-2019, 02:01 PM - Thread Starter
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post #4 of 19 Old 11-09-2019, 02:02 PM - Thread Starter
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post #5 of 19 Old 11-10-2019, 04:27 PM
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All you 21" driver guys are making me feel insecure with lil' 18 drivers.
I may have to jump on the wagon here
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post #6 of 19 Old 11-11-2019, 02:10 AM
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I'm in. This is exactly what I'll be needing in a month from now . Keep it coming !

What does your total sub setup look like ? Are you only running 2 Dev V1's ? Just asking, because I will.
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post #7 of 19 Old 11-11-2019, 02:47 AM
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Hey @harrisu which plywood did you use?

Thanks,
Femi

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post #8 of 19 Old 11-11-2019, 04:01 AM
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Looking good!

Theater: JVC RS540U, 2.35:1 142" screen, Onkyo RZ1100, Panasonic UB820, Outlaw Audio M2200 Monoblock x3, Klipsch RF7II, RC64II, RS62II, 5800CII x4 Atmos, PSA V3611 Subwoofer x2.
2 Channel: Parasound P6, Parasound A23+, Rega Planar 6 with Ortofon 2M Bronze, Klispch La Scala II, Behringer NX6000D, B&C 21DS115-4 powered Devastator V1 x2.
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post #9 of 19 Old 11-11-2019, 06:44 AM
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Thanks for posting the thread, it is on the Index

Stormbreaker | WI HT Meet Thread | The Devastator Index | Mini Devastator Build
You can always turn it down, but you can only turn it up so much (before you run out of power, excursion or structural integrity).
7.1.4 | 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 #10 of 19 Old 11-11-2019, 07:00 AM
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Looking good! Did you integrate your V1’s with your PA460’s or are you running them by themselves?

SPEAKERS: 3 x DIYSG 1099's LCR; DIYSG HTM 6's and 8's surround; 4 x RSL C34E's atmos.
SUBS: 4 x UM18-22 Mini Marty's and 2 x 21DS114-4 Devastators
SIGNAL CHAIN: Denon X4400; Minidsp 2x4 HD; 2 x Jensen Iso Sub 2RX; 3 x NX6000d.
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post #11 of 19 Old 11-11-2019, 12:45 PM - Thread Starter
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Quote:
Originally Posted by SpinMonster View Post
All you 21" driver guys are making me feel insecure with lil' 18 drivers.
I may have to jump on the wagon here
specially when the drivers arn't that expensive. Go for it

Quote:
Originally Posted by jorisdriesen View Post
I'm in. This is exactly what I'll be needing in a month from now . Keep it coming !
What does your total sub setup look like ? Are you only running 2 Dev V1's ? Just asking, because I will.
Hmmm I really didn't pay much attention to that part. But it'd fluctuate based on what type of plywood/MDF you get. The one I bought was like $44.00 each so 3 of them. 5-6 bottle of Loctitle PL3 glue, tons of paper towels , Driver of your choice, 2x4...... So all in all, it can get up to 600.00 but bigger chunk of that is the driver. The material cost is ~160-180. But if you build 2 boxes then its less because for 1, you need 3 sheet and for 2 you need 5 sheets. 3rd sheet can be shared to build 2nd one. Hope this helps
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post #12 of 19 Old 11-11-2019, 12:48 PM - Thread Starter
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Quote:
Originally Posted by lawdogx View Post
Looking good! Did you integrate your V1’s with your PA460’s or are you running them by themselves?
These Devs give so much punchy midbass that I really don't need PA460 anymore. PA 460 + Mini Marty (UXL18) though is definitely a great combo if Devs are not in picture. I like the bass quality of Devs so much that I don't want to dilute it with any other subs. That's why, I think I'm just going to sell my GSG Mini Marty soon .
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post #13 of 19 Old 11-11-2019, 12:52 PM - Thread Starter
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Hey @harrisu which plywood did you use?

Thanks,
Femi
First one I built, I bought sheet from hope depot. 2nd one from Lowes. I have the pic from Home Depot. For Lowes one, get the best plywood they have

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post #14 of 19 Old 11-11-2019, 01:05 PM - Thread Starter
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Quote:
Originally Posted by Kothoga View Post
Looking good!
Thx. A lot more to come

Quote:
Originally Posted by jorisdriesen View Post
I'm in. This is exactly what I'll be needing in a month from now . Keep it coming !

What does your total sub setup look like ? Are you only running 2 Dev V1's ? Just asking, because I will.
Yep. Running together. I'll have a detail post on how I'm running them including FR/waterfall..... in one of my reserved post. Short description: room is sealed 22x12x8 and MLP is 46" from back wall. Subs are on each side of back wall. I get great FR @ MLP but not so good for 2nd seat. I guess I"ll be building 2 Mini Marty and put them on front stage. Damn so addicting once you know you can build them . @Red Five can elaborate more on this but these subs have some crazy particle velocity. Sitting this close to subs does weird things to body. You feel pretty much all the frequencies on your body (assuming you are on suspended floor). Mind you that this is just running them 8dB hot. I do have a plan to run them like 13-14 dB just to see what they make me feel. Also, when I tried to integrate BOSS platform https://www.avsforum.com/forum/19-de...y-theater.html which is @trhought baby (thx for that budd) with Mini Marty, I was having a bit hard time. This is because with Mini Marty, I wasn't getting these TR until I ran them like 12dB+. With Devs, TR is of no issue. Tons of it specially when you are placing them close to MLP. Mind you that they are not NF. Far from it but close enough. Since Devs provide all the TR I need in 30-100Hz region, I cross over BOSS @25Hz with a 10dB boost @20hz and get all the wobbles I want from BOSS. BOSS is some sick stuff. Really awesome work done by @trhought . I consider BOSS as one of major game changer in my room. I could get what it does for me if I ran my system like 15dB hot + 10dB of boost @ 20Hz. Plus the whole house used to shake. Mini Marty + UXL18 is a crazy combo for LOW Bass if you have no issue cranking bass high. Tons of low low bass but nothing like Devs midbass punch. Will post details on scenes and the impact of them (more to come)

Quote:
Originally Posted by Red Five View Post
Thanks for posting the thread, it is on the Index
Thx. I was going to ping you when I had some decent info posted but I guess now that its part of index, I have to make all this info even faster

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post #15 of 19 Old 11-11-2019, 01:22 PM
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For those curious concerning the TR on a Devastator - https://www.avsforum.com/forum/113-s...-response.html The Devastators have roughly double the particle velocity versus a direct radiator for a given amount of power input. The thread is regarding TR and MBMs, but particle velocity is the main topic at hand. The Devastators have a more substantial particle movement over a wider bandwidth versus a ported enclosure. The ported box will have strong particle velocity around the tuning frequency of the vent, the Devastator will have it around the vent and all over the mid bass Peak velocity for the front horns will be in the 10m/s to 15m/s range.
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Stormbreaker | WI HT Meet Thread | The Devastator Index | Mini Devastator Build
You can always turn it down, but you can only turn it up so much (before you run out of power, excursion or structural integrity).
7.1.4 | 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 #16 of 19 Old 11-11-2019, 06:07 PM
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Quote:
Originally Posted by harrisu View Post
Thx. A lot more to come


Yep. Running together. I'll have a detail post on how I'm running them including FR/waterfall..... in one of my reserved post. Short description: room is sealed 22x12x8 and MLP is 46" from back wall. Subs are on each side of back wall. I get great FR @ MLP but not so good for 2nd seat. I guess I"ll be building 2 Mini Marty and put them on front stage. Damn so addicting once you know you can build them . @Red Five can elaborate more on this but these subs have some crazy particle velocity. Sitting this close to subs does weird things to body. You feel pretty much all the frequencies on your body (assuming you are on suspended floor). Mind you that this is just running them 8dB hot. I do have a plan to run them like 13-14 dB just to see what they make me feel. Also, when I tried to integrate BOSS platform https://www.avsforum.com/forum/19-de...y-theater.html which is @trhought baby (thx for that budd) with Mini Marty, I was having a bit hard time. This is because with Mini Marty, I wasn't getting these TR until I ran them like 12dB+. With Devs, TR is of no issue. Tons of it specially when you are placing them close to MLP. Mind you that they are not NF. Far from it but close enough. Since Devs provide all the TR I need in 30-100Hz region, I cross over BOSS @25Hz with a 10dB boost @20hz and get all the wobbles I want from BOSS. BOSS is some sick stuff. Really awesome work done by @trhought . I consider BOSS as one of major game changer in my room. I could get what it does for me if I ran my system like 15dB hot + 10dB of boost @ 20Hz. Plus the whole house used to shake. Mini Marty + UXL18 is a crazy combo for LOW Bass if you have no issue cranking bass high. Tons of low low bass but nothing like Devs midbass punch. Will post details on scenes and the impact of them (more to come)


Thx. I was going to ping you when I had some decent info posted but I guess now that its part of index, I have to make all this info even faster
Great to hear you're enjoying your BOSS harrisu.....long time no hear Yes, it's about 6-7 times harder to produce passive TR via PV than it is by using the subwoofer directly to provide natural TR to the body directly like BOSS technology is providing. And, for equivalent TR from PV, the SPL can get quite loud and the house and occupants will usually protest As well as the wallet....it gets quite expensive to produce SPL into the single digits.
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post #17 of 19 Old 11-12-2019, 04:46 PM
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Quote:
Originally Posted by SpinMonster View Post
All you 21" driver guys are making me feel insecure with lil' 18 drivers.
I may have to jump on the wagon here

Sounds imminent
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8hz ULF TR for the masses and the Cashless. Like a BOSS


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post #18 of 19 Old 11-12-2019, 07:16 PM
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Originally Posted by Gorilla Killa View Post
Sounds imminent


Or Eminence.

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post #19 of 19 Old 11-12-2019, 07:21 PM
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Quote:
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Sounds imminent
Quote:
Originally Posted by a77cj7 View Post
Or Eminence.
You are both correct.
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