/diy/ - Do It Yourself

>>1572842
Looks gay af

Have fun losing your hearing

>>1572843
Losing hearing? Hahahaha, sure bud. MANY people listen to louder systems and haven't lost their hearing. Looks are subjective, but you have fag on your mind a lot it seems. Have you come out to your parents yet?

>>1572842
Looks rather small. Do those drivers have a 1mm excursion or what?

>>1572844
so you are saying that shit box and 4 subs can't hit 120db?

>>1572849
20mm smartass ;)

>>1572842
>sealed
Ew.
I can't stand inefficiency and loss of extension, especially in a mobile setup where efficiency is actually a real consideration

>>1572853
Oh, no, it'll be in the 150s EASY. Maby 160 if its hitting HARD on its fb (34hz). But, people with 160+dB cars are still able to hear.

>>1572860
Sealed??? No dumbass. Look at the port on the side of the box. Also, sealed DOES have a lower roll of, therefore, having a higher extension

>>1572860

>>1572860
The only time I would ever get near a sealed enclosure is when making a 4th order bandpass. Thats about it.

>>1572863
>that tiny ass enclosure is actually ported
Wait you're even more retarded than I thought lol
Pic related, you're even MORE retarded than I thought.
I build and design cabinets and speakers all day

>>1572867
>tiny
Ok m8, sure.
That fucking pic XD. Ive never seen someone that cant extend the low end of a fucking sealed! What are you using a pyle sub? KEK

>>1572869
>extend the low end
>destroying your headroom like this
Yes, you are retarded
>yeah man lets just do +18db at 20hz this will totally work

>>1572867
Also, nice google search.

>>1572871
Here, have a pic of some subs I made
10cu ft each tuned to 14hz, 18 in drivers with 6000w amp, I made two for my theater room

>>1572871
>same size enclosure turned and ported
Lol God please delete this thread, please

>>1572873
Damn bro, thats sick af. I wanna hear that mf. Where you from?

>>1572873
And here are the left and right mains I made

>>1572875
Las Vegas
It literally shakes the entire house, the floor shakes up and down at like 11hz

>>1572874
Sealed enclosures have a lower dB loss. They are more accurate and are MUCH better for SQ. They are nice to an extent; im going for SPL, therefore, ported it is. My ported enclosure wont have the dB of a sealed at that low, but my peak is 3x higher. I want that damn peak.

>>1572876
Slick af
>>1572877
Holy shit dude, dope. You only have L & R or do you have more?

>>1572877
Im from Tennessee, its pretty quiet here... used to hear thumping at ever corner, but no one has any money...

>>1572874

¯\_(ツ)_/¯

>>1572881
If you have an opening to a car trunk a sealed box operates sort of like a 4th order band pass. For people with small trunks, sealed makes more sense, and can provide similar performance. This is the big issue with making subs in a car, since the car itself will amplify and attenuate different frequencies.

>>1572878
Its gonna sound like farts my guy
>>1572880
It's a 7.2 setup, probably gonna tear it all down soon desu, I spent like 5k making this entire home theater from scratch and I dont even like or watch movies, I've watched literally two movies since I built it years ago.
It was fun to make it tho.

>>1572876
That's some fucking incredible work. What all tools did you use to build this, I've wanted to get into building boxes but don't have many tools. I want to build a larger CNC router so I can make some interesting pieces

>>1572884
It rolls off faster, duh, but it extends further
Are you braindead?
It takes one look at this pic >>1572867 to understand what's going on
Yes it's a steeper slope for roll off in ported enclosures, but you gain SO much dB down low that you're still literally 10 times more efficient while the sealed is just moving and making no dB

>>1572890
Basic mathematics disagrees with you.
Even you disagree with you.
>ported rolls off faster
>also somehow extends farther

If it rolls off faster that means the end of the line will stop before the sealed enclosure. Therefore... nvm. You are too retarded to understand. You were very retarded in the beginning, however I agree with the last statement. That's why I don't care about sealed enclosures. The only time I use sealed is in a home theater system for the small 10" sub or so. That's only when dealing with SQ. Some people perfer it. Idk why.

>>1572891
I'd much rather have a single 10" in a ported enclosure, than two 10s in a sealed.

>>1572889
A circular saw with a guide to cut the 4x8s up, a shitty 50 dollar table saw to make bracing, sketchup and winisd to design and calculate the box, jigsaw and router to make ports and driver openings, 18ga nail gun and a shit ton of clamps to build the enclosure.
It's really not that hard, just a grand invested in tools and some time to get comfortable.
I made a build thread on avsforums but I cant find it
Here's a sub I made for my friends 64 impala

>>1572893
Not gonna lie, thats fuckin dope man. I use the exact same stuff. I just don't use my $50 table saw bc its NEVER strait lol. Imma get a new one soon. Maybe a big fucker that will cut bigger sheets. Once you have all the tools, most of the money is spent on just the wood

>>1572891
Wow dude epic post, good luck on your future builds, I'm praying for you.

>>1572894
Yeah my table saw is entirely useless for making cuts, I literally only use it for making 2 inch wide bracing strips.
I use a circular saw and a rip guide for every real cut.

>>1572894
I buy 4 sheets together. Once i got half off, the lady that rang me up markson as 4'×8' 1/2" sheets instead of the normal 3/4" sheets.

>>1572895
Thx ig... lol. Idk how it was an epic post. But it was something.

>>1572893
Thanks, the box in my car I calculated in winisd, then figured up the dimensions without cad. It was just a simple MDF box, no bracing or anything. It looks kind of shitty but works well, no leaks (save a very small corner to let the box breathe). I've got some time on a table saw, miter, jigsaw, and circular saw, but I've yet to use a router (but I have a shitty tiny CNC router).

I originally wanted a ported enclosure in my trunk, but after building said enclosure I couldn't get it past the fucking lip on the trunk (if I'd assembled it while in the trunk it would've fit). I'm happy with my sealed box though, and it saved a lot of space.

I've been meaning to build indoor boxes though, mostly for the fun of it, and maybe getting some better than store bought quality.

>>1572901
>didnt fit in the trunk after making it
Legit tragic, I would have cut the fucker in half and glued it back inside lol

>>1572909
I still have the box in my closet, a testament to my failure, has the flared port installed and everything, might use it for something some day, or maybe sell it to someone with a bigger car, it's tuned for....20-24hz iirc, going lower made the box impossibly big. It was designed around a Rockford fosgate sub (which is in my sealed box now)

As far as gluing that shit, I wanted to have it removable, for when I eventually build something better, I was young, had little money, and not many tools.

>>1572842
But why?
To annoy everybody around the ghetto with terrible music?

>>1572911
I pretty much just aim for 30-35hz in a car and size the port so that I dont exceed a set air speed limit.
Going lower than 30hz the box gets way too big

>>1572918
Ya, learned that one the hard way, box was...3-5 cu ft for a 12in sub

>>1572842

turn it down, jamal

>>1572876

that looks great, im impressed

>not building a mass loaded 12th order compound horn
Do you even GET LOUD, bro?

>>1572955
I got some khorns, close enough?

>>1572962

Very nice, the transient response and high efficiency of a front loaded horn is really great. Difficult to design a practical package once you want 28 hz in an open area, since the solution takes all the space in 2 vans, still worth it for that "horn sound" and sheer volume of air they can move.

>>1572967
horns for life my brother, once I got into them I can't stand to buy any other speaker type, direct radiators are for plebs
just the massive gain in headroom you get from 100+dB/w is worth it

>>1572853
What he's saying is you don't have a clue and you shouldn't talking shit on things you don't understand.

>>1572860
>muh overthrown and torn surround...

>>1572887
How u power the amp?

>>1572860
>I need that one note thump, fuck everything else

>>1572873
Wanna know how I can tell you live alone?

>>1573212
?
>>1573216
Wall outlet
>>1573224
No? A properly designed ported enclosure is flat and accurate with good extension
>>1573225
How?

>>1573507
>How?
Because you're a trip and everything is archived.

>>1572914
bumping this question

>>1573538
No, bc its fun, and its my hobby. Not an ooga booga jamal, just like my music.

>>1573224
>one note thump
A proper box wont have that effect unless you are going ONLY for numbers, which im not.

>>1572887
It seems a little to large for a dayton sub...

>>1572843
>>1572844
>>1572853
>>1572861

Damage on the hearing system depends not on db alone but also on the frequency of the tone you retards.
Anything sub 100Hz woun't do anything with your hearing.
But 5000Hz @ 120db will make you deaf. (and it would be extremely painful)

>>1572887
>>1572873
>14Hz tuning
kinda silly because the hearing scope ends at 20Hz.
It's also silly because music/movies often don't contain any music information down there. It can't be heard so it gets filtered out.
This thing would make sense when fed by a bass octaver dsp to generate audio signals in that region.

>7.2
>not watching movies at all
Exactly the reason why I don't have a 7.2. I build my speakers as a music setup, because I'd hardly watch movies.
7.2 systems aren't great for music. 2.0 or 2.1 is the way to go.

>18" 6kw
A 21" PA driver would have been the size to go. They are also a lot more efficient so you don't need to drive them with 6kw to get the same pressure.
21" drivers are hard to get though.

I like your craftmansship!
If I had no neighbors, I'd go for a 2x18" sealed setup.

Tip: get one of these physical bass shaker things that you can mount on a chair or couch. They are neat.

>>1572843
my guy, low frequencies dont damage hearing like hi pitched screeching sounds

>>1572962
jelly. would love to build a pair of khorns or la scala some day. there are plans out there.

pic is my latest build, just a simple floorstander with some cheap PA drivers

>>1573552
>wont have that effect unless you are going ONLY for numbers, which im not
>>1573507
>A properly designed ported enclosure is flat and accurate with good extension
4 subs in a ported ported box that's grossly undersized. Sure buddy.

>>1573666
Visaton BG-20, I can smell that from here.
Great efficiency per watt, built lots of speakers with them.
Wouldn't use them for hifi though. Eg. the SICA 1100 sounds a lot more complete.

>>1572898
those bastards at the mdf factory started printing bar codes on the side of it now.

no more inadvertent sales.

>>1573609
Yup. Agree.

>>1573700
How is it grossly under sized? Fucking retard. I'm glad you don't know how to do the most basic of research.

>>1573840
Ikr its bs. That's why if you have a paper tag you simply rip it off. Always bring a small slit of 80 grit sandpaper in case they have it printed on.

>>1573729
ha yeah it's the bg20, this is a test build with cheaper drivers while i work on my finishing ability.

they go low but basically don't extend past 10 kHz which is fine for a house party but not for critical listening.

pic related is REW measurements on/off axis. no stuffing in them right now hence the lumpy buttom end.

Since we're posting enclosures I'll contribute. 3.2 cubic feet tuned to 32hz. Driver is an Adire Audio Shiva MK4. It's tucked under a bed because trying to use it as a table resulted in the dented dustcap. The entire thing is almost 20 years old at this point.

>>1572842
looks great reminds me of this one.
https://www.youtube.com/watch?v=ciGiOlui52Y

>>1574026
that enclosure has got to be double, if not triple the internal volume of OPs. That's going to make all the difference. A tiny box with a huge port is a fart box. On the flip side, a huge box with a tiny port makes a strange noise I can only describe as "chuffing". I used to build a lot of enclosures using a pair of 8" subs as acoustical guinea pigs.

>>1573930
>research anon's photo
OK, let me just set aside an hour to play detective.

>>1573553
it's tuned to 16hz lol
https://my.mixtape.moe/pfzksa.wpr
>>1573619
music and movies def contain content below 20hz, ESPECIALLY movies
Explosions????
Also, it's called infrasonics, and it's a large part of the movie experience.
You must feel the explosion, not just hear it, and that requires a lot of dBs below 20hz.

i'm aware, 7.2 was installed with movies in mind, it's a HOME THEATER after all, it has a 120 inch screen.

PA drivers aren't designed to produce infrasonics, anything below like 30hz is removed from prosound setups due to the insane amount of power that would be wasted trying to reproduce such frequencies, which aren't even necessary for 99.9% of live music.

I don't want a bass shaker, I want the sound to shake my seat enough to where I don't need one, hence the infrasonic tune and 6kw of power.
I want to make two more of them 2bh...

Also, I'm well aware of prosound drivers, I have 5 lab15 drivers and built 4 cabinets tuned to 33hz for my downstairs setup, they are to supplement my Khorns with bass heavy music.

>>1573700
Why are you replying to me? I'm not the OP
I'm right btw

>>1572860
What's wrong with sealed? Honestly, I don't know. I thought the were supposed to be more accurate and tighter.

I get confused with sound. It's complex and things like rolloff I don't understand.
Bad enough decibels are a logarithmic measurement. Any links that I can learn from?
>>1572860
>loss of extension
Is this referring to how much the subwoofer itself can move?

>>1572876
Jealous af. Looks fantastic not to mention you actually calculated the space required.

>>1572842
Will for sure do the job (a loud boom-boom-boom-bobo-boom-boom-boom), but why does it take so long building this simple box?

>>1572918
>air speed limit
???
>>1573525
Kek. I was going to say because no wife/gf would want the house shaking and the noise.
>>1574022
Why do you have a Pringles can under there?

>>1574206
Ignore my Pringles question,I just read the filename lol
Still, that doesn't look very convenient.

>>1574193
>What's wrong with sealed?
It takes 10x more drivers to get the same output as sealed at less than 20hz
way way way more power needed, way way way more drivers needed.
sure it's more "accurate". there's no port delay, but it's honestly not that big of a deal.

>>1574195
read sites like diyaudio and avsforums, you'll learn a lot

loss of extension as in frequency extension, excursion would be subwoofer movement

ty fur the compliments my friend

>>1574206
i think i used 30m/s as my upper limit for car audio but honestly man I can't really remember
I know I can tolerate a higher port speed with more cuffing in a car than in a home environment since the noise floor of a car is super fucking high and you wont hear it anyways, plus size is a restraint for ports in a car so you can't get insane with port size or it takes up half the damn cabinet kek

>>1574229
output as ported* god damn i need to spell check my shit

>>1574022
>>1574208
It's obviously a drug stash spot

>>1574231

its his homemade fleshlight

this is /diy/ afterall

>>1574240
pringles fifi???

>>1573551
>Not an ooga booga jamal, just like my music.
So exactly what’s the difference?

You like music so I get to listen to your music... And feel it in my vehicle and home. I get to experience it being my property values down all at 3am.

Hey I like pussy. Can I come into your home and fuck your wife at 3am?

>>1573525
Because no wife/gf would ever let you build that in your kitchen. Jesus man, get a cuck she’d like a real man, or at the very least invest in a drop cloth. I don’t care how niggery the linoleum is.

Anyway, nice work, even for a tripfag.

>>1574140
>it's tuned to 16hz lol
. . . .

>>1574208
It's aligned in such a way that I can grab the can and put it back without looking. The bed is memory foam and doesn't need box springs, so it sits directly on the plywood, saving about 8 inches of depth. The hooks are 3d printed & placed so if I butt the can against both 2X4s and the plywood, it's aligned and positioned correctly. I can slide the can on and off those hooks completely blind and not get triggered that I might have just tossed garbage on a carpet that's a bitch to maintain. This is how a clean freak /diy/'s a small garbage can.
>inb4 autism

>>1574395
it's pretty common in home audio setups. You got the audio guys who sperg out and spend hundreds to tape rocks to their RCA connections and thousands on RCA cables that are held inches over the floor on little vibration dampening feet to make sure the rocks don't jiggle; and you've got the ones that go full retard on enclosures, turning entire basements into speaker boxes tuned super low in case they need to commune with whales or want low flying aircraft to feel the bass too.

>>1574494
so much this.

>>1574243
Kek
>>1574229
Thanks
>>1574489
I stand corrected 10/10 anon
>>1574494
>in case they need to commune with whales
Top kek

>>1574229
Forgot to ask, did you go to school for this and how did you get into the field?

>>1574567
no school I just really like audio and spent a shit ton of time reading and making stuff

Whats a good place to start into making basic speaker boxes?

I know how to woodwork, but I'm more curious about calculating how big an enclosure needs to be for a speaker, or how to 'tune' a port for a specific frequency.

>>1574981
check out Kirby Meets Audio on youtube, Troels Gravesen's webpage, diysubwoofers, diyaudio

>>1575045
Cheers mate

>>1573609
For you