How I Built the 12″ DIY Hammer Subwoofer Box from GSG Audio & Home Theater Gurus

[Applause] [Music] so [Music] so for this build I decided to go with it the dayton audio ultimax 12 inch subwoofer of parts express as you can see it came packaged very nice it was nice and cozy inside all that cardboard and it was legit heavy as i unpacked i noticed it looked really nice that carbon fiber cloth cap was beautiful [music] here we are i pack the amp in the amp came in a smaller box i was very careful when i opened it because i didnt know what to expect and once i opened it i found the packaging was awful the power cord was just sitting on top there was just a random piece of thin foam and the amp actually sat on its side not even flush with the box so i was actually surprised it came all in one piece here are some of the items I will be using in the build but some of these items I didn't end up using but are good to have just in case here is the denim insulation purchased to go in the box to avoid resonance as i found out early the box was packed very very well by gsg thank you it took a while to get it open but once i got it open and the styrofoam started things flow a little better but one thing i would say the biggest takeaway from the early stages of this build was the fact the product came from gsg very well protected and its good to have an extra pair of too hands to help you in case things get a little heavy now when i tear open through this box i get more and more excited because i want to build this so badly but as you can see again very well packed super cool [Music] okay so what i did was i individually took out each piece and put it down to see i had everything just part i needed in case something didn't come through or in case something was missing i wanted a whole gift i having an inventory of what I would become against [Music] so [Music] and in this shot I noticed that the home theater guru decal is etched on the center piece and I found that super rad a huge shout out to home theater grooves for merging this great design [Music] here the pieces are put up and ready to go and for reference here is a parts list from gsg you can get a pdf of this exact tutorial i'm just going to show it here reference [Music] step one glue port bracket to bottom panel seems easy enough as I apply copious amounts of glue probably too much glue for sure Definitely too much glue rookie mistake I quickly learn what it takes glue right on my first run here so I brush it and you know it probably gets worse but at the same time you have to think more glue is better than not enough glue thats how i go kind of my mistake but in the future make sure not to use too much glue because you're going to be a messy mess like I'm here [Music] now it's time to put pressure on the gate bracket down to the bottom panel I've applied all my strengths and as you can see glue just oozes out I must now tidy up there I'm the rookie cleaning up wrong as I said but this you learn along the way and I learned that early too a lot of glue will make a huge mess two and three glue the left side and the back down as well as the right side down and the back ok i apply more glue on the side of the panel the best advice i can give and the as it should be done is any piece that touches another should have a nice amount of glue on it not too much just brush it on make sure you brush it on both sides so on both the panel and the underside thats something i was curious about but i found it was just better habit to make sure there is li jm applied to any surface that needs glue or that is going to touch and make sure you have your clamps ready because you will need at least eight clamps i would say conservatively its always good to have extra clamps in case you need and it's good to apply pressure very quickly because this glue will dry quickly [Music] here's step three applying the right side down and back make sure it's nice and clamped that way it dries well [ Music] step four is gate lower to gate glue bracket and sides so this piece is actually going to slide into those grooves on the side of the panels [Music] okay step five glue window panel to gate lower and sides when I apply the glue I get it all nice and done because i'm a bit dry it fit a bit and i made sure everything was correct i didn't want it bend you know or anything so everything was cool so i went ahead and it all glued on and got it ready to fit you exactly can see the gluing takes the most time as it is so the main process i think you could say the whole build uses tons of glue here is the center point going in go if you can see that nice logo in the front facing and you take your hammer and just knock it down a bit make sure it's nice and fit now here's something i didn't do and i should have so i should have used a clamp to put pressure on it and this is something that happened affect later and i'll show you when it happens so you won't make the same rookie mistake i did step six glue port inner bulkhead lower and sides here we are, i already did it because i was in front of the camera again uh how embarrassing but essentially the same method glue the back of everything that is going to touch the other part of the wood uh glue it well and then practice pressing k out using clamps now here comes a part that wasn't mentioned in the instructions but is highly recommended by home theater gurus who is putting the denim insulation in from the box to align it with denim insulation so i'm using that 3m 77 make sure you wear a mask I'm not wearing a mask scene in this and I should have been because I inhaled toxic fumes but it makes things really good so denim insulation is a great one to use because it's not as annoying as fiberglass don't use fiberglass, whatever you do make sure to apply a good amount of glue make sure all the pieces are cut especially the last last piece at the end doesn't cover the porthole because then you won't have all the air flowing somewhere so make sure everything is just right cut and you should be fine and the reason we are doing this to avoid excessive resonance step 7 glue the top to the back of the bulkhead and window panel okay here am i the back of the top panel to put on the last jeans insulation make sure the insulation is cut evenly so it wont affect the placement of the top to the rest of the enclosure [music] and more glue make sure there is glue on is every piece that will have glue and don't do that don't do that what i did it just there i just literally put glue on the top of the case that's a big no-no make sure uh just look where you are glueing because I don't and I don't regret it because I wrapped in a in some material but this could be really really bad if that I wouldn't have noticed and rightly left the glue there or keep applying glue to the wrong piece so make sure you are aware of what you are gluing and apply glue as i said on anything that will touch apply it on both sides so apply it to the actual piece going on and adjust it to e on the actual part of the casing it will touch so that way everything is nicely covered with glue too much glue is like i said not a bad thing then not having enough glue so keep that in mind okay so now we go apply pressure to the top of the case er of course my 240 lb frame thats not enough to push it down so i'm going to use a block of wood and a hammer it's just boom boom boom boom eh let's do that take right so what happened here was that it wasn't exactly like that i need some sanding because somewhere along the line there was uh you know a tiny millimeter off somewhere so that can be sanded easily it's not a catastrophe in any way just make sure everything is neatly lined up and you should be good to go sanding and perfecting your box in this scene i apply a flat black primer and paint to the porthole i want the porthole to be this dark if possible i don't want any kind of light wood to show through so i'm taking this precaution and just going forward and i'm just going to go ahead and give it this nice aesthetic make sure you put tape on if you're going to do anything from spraying make sure you tape everything so you where no paint you don't want it to be now one thing i just wanted to let you guys know is the glue inside has dried in 15 to 20 minutes and the exo hydride in about 20.

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So it dries pretty fast so all you need to do you have to move a little soon this is something you have to move at a good pace because once something is set it goes for too good so don't forget to fit yourself as you do each step so that nothing dries up too fast step 8 glue front bulkhead to inner bulkhead so for this part you are going to apply glue around the front of the bulkhead uh make sure not to put too much glue around the porthole because you don't want it cattle l glue to get into the porthole and you ruin that nice paint job just done but at the same time you will need to apply a good amount of glue because this is a very important piece to the puzzle this is true if you mess up, this is not the case becomes a good thing so make sure it has enough glue on just go through that and never come off apply the glue evenly with your glue brush and like i said be careful with that porthole because you wont get any glue want to drip down there and ruin things so just apply it evenly and apply it that way throughout the shot when you put the top of the other baffle everything is nice and covered with glue and it will be just perfect and if you line it up make sure it's lined up nice and even because uh that's just going to create more work for yourself later when sanding after you put the front shot on make sure you clip it that way mt there is pressure and it dries evenly on the actual case wipe off any excess glue and you are ready to go sand sanding was fun it was a bit tiring but i enjoyed doing it and i made the box absolutely perfect you want that perfectly smooth surface you don't want any ripples or anything like that especially if you are going to paint it with like duratex or exahide you want that perfect smoothie finish no ripples no blemishes no excess glue none of that stuff all that stuff can come loose in this part which is sanding and i use orbital sander then we got painting what i did was i painted the front and back baffled in an exo skin that later we found out exo height is best rolled up not sprayed so very very be careful when buying this paint because it made us really sad about this thing was hiding the spray gun it was just bad all around but d th finish came out good i actually really liked it however in future if i go spray any of these will be duratex so remember exohide is not good for spray Shooting this thing is not a good situation but overall for my first try to this ever i felt i did a good job ok guys i hope you enjoyed the build it was my first build so i hope you guys can take it easy with the comments um ii had some issues and i had some few obstacles i had to go through but overall i had a great time building this box this episode will only focus on the actual build of the box so i know you are probably wondering why he put the subwoofer and the amplifier and the finish and everything I'm going to keep that because in two weeks we're going to look for the best subwoofer edition diy subwoofer and the hammer is going to be the subwoofer we will be measuring test and of course on h et reviewing so stay tuned two weeks before the second part of this continues saga of the hammer by gsg audio and designed by home theater gurus shout again to home theater gurus and gsg for composing great fun really cool project for me to do this do it thanks guys and we'll see you in two weeks to finish this sub uh

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