DIY Subwoofer Build Instructions - 15" Marty Cube for Home Theater - GSG Audio & Stereo Integrity!

[@JilesMcCoy]

Upgrade your Home Theater Here: form.jotform.com/240460421163141 -- Jiles Approved!

[@cbonner1964]

Jules thank you for your videos, you are the king of subwoofer builds and knowledge. I have 1 svs pb 16 ultra and wanted to add either another pb16 or 2 diy subs in the rear off my room. Clean bass with low extensions. Thank you!

[@JilesMcCoy]

Either of those options will bring a Ton of bass. I’ve heard 2 pb16 and they are thunderous!

[@BradFletcher-sg8ft]

Do these compare to the pb16 ultra subs?

[@DGGuaglianone]

Currently planning my first sub box build, flip flops & socks are now at the top of my list on the design.

[@JilesMcCoy]

They are truly a game changer!

[@kevings26]

GREAT work on these Jijles! This build video is going to be really helpful for 1st time GSG Audio kit builders.

[@JilesMcCoy]

Absolutely! I 100% believe that this 15" build is the gateway for all home video enthusiasts to jump into more serious home cinema experiences. At less than $700 a unit the cost is great for the performance. The sweet spot is 2 of these with amplification for around 2k all in. Its outstanding. If you go with 4 it is more bass than 99.999 of all theater owners would ever need. Its a game changer. Everybody out there... what build is next?

[@gelmera]

Is there any benefit of the birch over the MDF

[@JilesMcCoy]

It’s lighter. You can stain it if you want.

[@Clobercow1]

Acoustically, no.

[@Jurmuli]

Nice! I was waiting for this video since the SLQ-15 short of yours. Now waiting for the impressions and measurements! :)

[@JilesMcCoy]

I hope it helps! We are probably a week or so out from the measurement video. I have to fit it in with a full work schedule.

[@dieselsmiths]

I’m not sure assembling a kit would have the same satisfaction level as designing and building an enclosure. Good video full of tips to help others gain some confidence to make that first step. Nice assembly

[@JilesMcCoy]

Depends on the customer. Some folks just want to build, others want to design.

[@greenfamilylights2296]

Impatiently waiting for the demo/ measurement video. I'm following this one closely as it's in the runnings for my next build!

[@JilesMcCoy]

Sneak peeks on the GSG FB group up now.

[@greenfamilylights2296]

I'm following there as well. Highly considering this as my next build!

[@JilesMcCoy]

@@greenfamilylights2296 I am very happy with them!

[@keepitshema]

Is there any freq response measurement of your subs? I am curious.

[@JilesMcCoy]

Can you drop me an email? I think I have a REW measurement still hanging around.

[@ronniehosein7384]

Hi thanks for the video. Have you compaired this to the starke 15" ported and seal. If yes can you share your thoughts. Thanks again

[@JilesMcCoy]

This will have more output on a per unit basis assuming a strong amp is purchased. The cost is much higher though. If you have the cash and want to build you can’t beat the GSG. If you want a bunch of bass nice and easy the Starkes are a good way to go.

[@discostu668]

Have you ever considered using PL adhesive instead, at least for some of the assembly?

[@JilesMcCoy]

I've not. I really don't know anything about that kind of glue.

[@hi-fihaven2257]

One Awesome video Man! I LOVE the build videos. It was great to see your kiddo join the action! I REALLY wish that my house was built as well of those subs! 😎👍👍👍

[@JilesMcCoy]

Thanks!

[@aaronh888]

Do you secure the wire inside the cabinet before putting in the driver? Is there any risk having that vibrate?

[@JilesMcCoy]

I didn’t. I’ve never had an issue.

[@chevron916]

Thanks for the video. Very much enjoyed and equally learned. I live outside of the US, thus am unable to purchase a flat pack from GSG. Well it’s not economical. Thus I am building one(Marty cube 15) by reverse engineering plans and images if have obtained online. - It would be helpful for me if you could tell me me what the internal height of the vent. It appears to be ~50mm(2”). Would you be able to measure end tell me?

[@JilesMcCoy]

Hey, that’s for watching. I don’t have these to measure now fortunately.

[@chevron916]

@@JilesMcCoy oh that’s a shame. Thanks for replying. Given the number of subs you have built, do you build then sell/give away?

[@vegapower454]

How long do you leave the clamps on before you remove them?

[@JilesMcCoy]

I clamp pieces for a couple of hours before moving on.

[@finster78]

Curious if you preferred the Wagner for the duratex or if you preferred the cheap harbour freight gun with the small compressor you used in the devastator build. Which was easier to apply and which gave the best finish. Thanks.

[@JilesMcCoy]

The Wagner gave a better coat for me but its way harder to use.

[@finster78]

Ok thanks. I’m reluctant to use the roll on duratex since I don’t want to take the chance on roller marks, but I only have a small hotdog compressor like yours, so I’m left with either the Wagner or cheap harbour freight gun options. Thanks for the info.

[@Myinnerthoughts-88]

What would be your reason to put insulation in a ported box..gsg told me the box didnt need it

[@JilesMcCoy]

There is a long thread on the gsg Facebook group. Go check that out.

[@Myinnerthoughts-88]

I don't have fb

[@JilesMcCoy]

@@Myinnerthoughts-88 You might want to join up if you want to chat about the GSG stuff.

[@cbonner1964]

Mr Jules do u recommend Dayton subs or stereo integrity’s subs for cleaner bass? That for your expertise 😊🔇

[@JilesMcCoy]

You will be good with either one. Buy the one that works best in your box and your application.

[@finster78]

Sorry and how much glue did you use for both builds. Would the 1 gallon jug be overkill.

[@JilesMcCoy]

I used just a bit more than 1 of the medium bottles per sub.

[@finster78]

Perfect thanks. I’ll get 2 of the larger 32oz bottles then which should even give me some left over.

[@psyphonyxaudio]

Going to get a snack for this one =)

[@JilesMcCoy]

Maybe needs an intermission too.

[@EverythingHomeTheater]

Yayyy! Shorts and sandals approved build. Hehe

[@JilesMcCoy]

Always!

[@daferdztv3684]

i see him like an elephant but moving like a turtle

[@nathanjohnson614]

Great Job on the build. Can't wait for the next video on these! I'm eager to know what you think of these compared to other subwoofers you have experienced in your space.

[@JilesMcCoy]

Coming soon!!!

[@nathanjohnson614]

@@JilesMcCoy I can't wait! I really like your approach to reviewing stuff in your own space. I'm super interested in how you would compare these to the other GSG builds you have made and tested, as well as the Starke Sound SW15 you reviewed recently. Specifically, I am searching for reviews about when smaller subwoofers are adequate for reference level movie sound after having tried larger subwoofers in the same room. I don't want to buy huge subwoofers just to turn them down and only ever use 10% of their power. 😄 In your opinion, are these SQL-15 Marty Cubes "Enough" for you in your room after having experienced the 18" and 21" offerings from GSG?

[@JilesMcCoy]

@@nathanjohnson614 Hey, 4 of them are enough for sure. 2 are enough for anyone outside of the home theater crowd.

[@gelmera]

Can you do a video showing setup of Subwoofer-->AMP-->AVR and how you optimize for your room?

[@JilesMcCoy]

Sure. I have covered many of those in the past but I can do something up to date. The optimization is the hard part!

[@Chahtawarrior31]

Nice job!

[@JilesMcCoy]

Thanks!

[@1Sparkygod]

Good too see you at the show, btw.

[@JilesMcCoy]

You too!

[@edub8803]

Sorry if I missed it, but about how much did these cost to build?

[@JilesMcCoy]

I am working on that video :-) Slowly but surly!

[@fozybearlaplante5108]

A little tip when gluing your front piece use some table salt it will help stop it from moving around when clapping

[@JilesMcCoy]

Thanks for the tip!

[@magnuswf]

Could course sand/gravel do the same or does salt dissolve in the glue which is important?

[@fozybearlaplante5108]

I've only used salt. Never tried sand or gravel I do believe the salt is the better option. @@magnuswf

[@embp1647]

I really want to see the measurements!!!! thanks.

[@1Sparkygod]

I most definitely what a pair of those!

[@JilesMcCoy]

These are super good!

[@brian69frmovale76]

So basically this just confirms that my box is perfect 👌

[@JilesMcCoy]

Awesome!

[@randallross3036]

Great video! I don't need these (I have two mini-martys in the theater) but I want them lol!!! Maybe I need them for 'backup' in my living room system. 🤔... Yeah, that's how I can justify them ha ha ha

[@JilesMcCoy]

The heart wants what the heart wants...

[@johnhaywood1706]

How to make contact

[@JilesMcCoy]

Contact with which thing?

[@GrimmReapa]

Two or four zip ties in the holes of the upper part of the sub gasket would help take the sub out of the box.

[@JilesMcCoy]

Thats how I usually install subs too!

[@raghavendrak919]

Boss...How did you manage to create such an EPIC...Never Ending Video...? All you managed is to Assemble couple of Boxes...and took 100Min of my life..GeeZ Good Video...but ....wayyy toooooo lengthy....

[@JilesMcCoy]

The video is really for those that plan to do the build and want to see every step in detail. I have a shorter version that is more on any overview. Thanks for watching!

[@TimpBizkit]

Quadruple baffle? As long as you don't need to move house I suppose.

[@JilesMcCoy]

The struggle is real heavy!

[@JosephTongret]

Let me know when you're ready for my shipping address 🤣

[@JilesMcCoy]

Once that money transfer goes through! ;)

[@McCallisterhomestead21]

A-TEAM

[@JilesMcCoy]

100%

[@anthonysilva5015]

Went thru the comments to see if someone got it... dammit, if only I seen this video 4 months ago... lol

[@rasranger7829]

15inch Orion the bass would go to 30hz

[@JilesMcCoy]

An orion driver?

[@Silent-Lucidity]

You're my twin!

[@JilesMcCoy]

Twins!!

[@jacobpadilla2676]

A team

[@JilesMcCoy]

100%

[@dennisanderson1338]

"A" Team

[@JilesMcCoy]

100%

[@احمدرضایی-ج6ك]

⚽️

[@JilesMcCoy]

Baller!

[@Paulscole3]

I PITTY THE FOOL!

[@JilesMcCoy]

Thanks for watching!

[@Paulscole3]

@@JilesMcCoy You do know I said that in reply to your A-team comment?

[@unsung7603]

This video should come with a health warning, please wear suitable footwear, not flip flops, Sorry Jiles love your channel and build videos as I've learnt a lot, but the flip flops...just no 🤦‍♂lol

[@JilesMcCoy]

The dogs have got to breathe!

[@amanteapasionado6836]

All that and no demo 🤨🤨

[@JilesMcCoy]

Watch the other video and you can see all the measurements.

[@6rippin]

Couldn't finish watching your video. Music was too annoying. I don't know why people add music. U can't cater to all. A basic beat would play to all. Not a slide whistle on red bull. My opinion. If I mute, I can't hear what your saying. I lasted 23 mins. Good enough 😂

[@JilesMcCoy]

Thanks for trying!

[@parttime9070]

Next time thin your product..

[@JilesMcCoy]

I know,,, I am so lazy about that sometimes. Worked out great though!

[@apexpredator_jku]

These boxes are just over engineered. Like all the gratuitous bracing...that is just totally unnecessary. It's not load bearing. You're not dancing on top of these things. A couple of wood dowels would be plenty enough. The home theater community can learn a lot from the car audio guys. Those folks are doing ridiculous bandpass enclosures with 16 18" subs weighing 100+ lbs each with insane neodymium motors doing 160 db inside of a Chevy Tahoe and don't use a fraction of the bracing being used for these single sub I've seen X- Games half pipes that have less bracing.

[@JilesMcCoy]

Rhw reason these are designwd like this is because lessons have been learned.

[@parkersgarage4216]

I agree fully, if you put 2 window braces and corner gussets it's not going anywhere. U wanna get real crazy go w 3 windows. U gotta think when your paying almost 600 for a box. You gotta give something elaborate looking. Normal people simply dont know any better is all. Normal people probably think you need this kind of box. It's completely unnecessary plain and simple.

[@philipdagariero5383]

Because they have to overcompensate to justify why they're charging $320-500 for $30 worth of MDF so they can pay off the CNC machine. I should know, I design 4th & 6th order bandpass enclosures for the mobile audio world. I could understand the copious amounts of bracing if you were in the lanes competing for SPL where a 10th of a decibel could be make the difference but even then, you're treading on rebar and pouring concrete into an vehicle but for a home theater set up... there's no logical explanation for the need for that much bracing. I challenge anyone making these videos to prove me wrong.

[@parkersgarage4216]

@@philipdagariero5383 couldnt agree more, its completely unecessary and like you mentioned justifiication. then they try to make you think you need an elaborate box so they can sell you one. rather than you build your own for far far less money. and yes i bet 1 sheet of mdf was used in the design. actually youd be surprised to know this box costs 560 bucks lol. insane isnt it, i wonder if that includes shipping lmao. god i hope so lol

[@carrizzle9586]

If you put in less bracing they'll have to charge less money💰. You guys have to get with the program. 😂

[@electengin820]

Stop beating around the bush so much.

[@JilesMcCoy]

It’s a long build process… I have a much shorter version posted too.