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Build Your Own Subwoofer

michael posted more than 11 years ago | from the rock-the-house dept.

Hardware 232

Gerard J. Pinzone writes "Here's a page that details the construction of a homebrew subwoofer." Another in a long line of "You can, but should you?" projects.

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I remember... (0)

jigma (470246) | more than 11 years ago | (#4304990)

the days when you HAD to build your own car.

fp (-1, Offtopic)

Anonymous Coward | more than 11 years ago | (#4304991)

yipiee!

Hebrew Subwoofer? (0, Flamebait)

benjcorey (516769) | more than 11 years ago | (#4304992)

I thought it said build your own hebrew subwoofer!

Re:Hebrew Subwoofer? (0)

Anonymous Coward | more than 11 years ago | (#4305012)

OY..OY-OY..OY..OY-OY

Re:Hebrew Subwoofer? (0, Flamebait)

idontneedanickname (570477) | more than 11 years ago | (#4305092)

Actually, you were correct, this unique subwoofer translates all tones into hebrew, adding known hebrew sounds such as 'ch' 'kch' 'schlkk' and all this in real time! You can easily flash the firmware to add the arabic package which includes many eastern languages.

Re:Hebrew Subwoofer? (1, Offtopic)

sinserve (455889) | more than 11 years ago | (#4305278)

Arabic is just ONE language, but the arabic writing is used by Farsi and most of the Paki/Afghan languages.

Re:Hebrew Subwoofer? (0, Offtopic)

MaxVlast (103795) | more than 11 years ago | (#4305323)

How is what you said inconsistent with what he said?

Case only. (2, Interesting)

Anonymous Coward | more than 11 years ago | (#4304994)

He only built the enclosure ... I was expecting a 50Mb AVI of the guy winding the coil and magnetising the magnets.

Re:Case only. (0)

Anonymous Coward | more than 11 years ago | (#4305114)

Right, I was somewhat disappointed as well. It is a nice enclosure though. Must be a slow news for nerds night.

Re:Case only. (1)

DetrimentalFiend (233753) | more than 11 years ago | (#4305207)

I too was dissapointed. I thought he would at LEAST mangle some existing sub to make it 40" or something crazy like that.

Re:Case only. (4, Informative)

Syre (234917) | more than 11 years ago | (#4305233)

He didn't even build a good case, as far as can be told by that article. Maybe a good looking case, but if he didn't design the cabinet using simulation software, it's very unlikely that it's a good sounding case.

In case you're thinking of a similar project, a good page with all kinds of information and links for designing and building your own subwoofers that actually sound good is here [scrounge.org] .

Here [wssh.net] is a page of freeware loudspeaker design software and links to more. And another such page of speaker design software is here [tripod.com] .

Amazing! (5, Funny)

dotgod (567913) | more than 11 years ago | (#4305002)

I used a router to cut all of the circles

I just want to see how he hacked a router to do that.

Kidding...I'm not that much of a geek.

Re:Amazing! (-1, Troll)

Anonymous Coward | more than 11 years ago | (#4305170)

By posting this on Slashdot, you've made it quite clear that you ARE that much of a geek. Chances are you're a closet homosexual, as well.

Good rule of tumb (-1, Redundant)

Anonymous Coward | more than 11 years ago | (#4305003)

Just because you can...

Does not imply you should...

Re:Good rule of tumb (0)

Anonymous Coward | more than 11 years ago | (#4305011)

Tumb! [colophon.com]

home made. (5, Funny)

DarkHelmet (120004) | more than 11 years ago | (#4305005)

Ooooh, for a moment when they said "Build your own subwoofer," I thought they meant out of spare parts at home.

I would have loved to see him try to build one out of parts of a microwave, stove, dishwasher, and drying machine while using a fridge to house it.

See what happens when you have old episodes of MacGyver on tape?

Re:home made. (1)

mrmag00 (200868) | more than 11 years ago | (#4305027)

bah, MacGyver would have done it with 2 rubber bands in a pencil. I pity your lack of cunningness.

Re:home made. (0)

Anonymous Coward | more than 11 years ago | (#4305041)

and a pencil... always proofread. and then preview...

Re:home made. (-1)

handybundler (232934) | more than 11 years ago | (#4305136)

Actually he could manage to fit a small subwoofer IN a pencil. Such by using the two rubberbands in an Isobaric Driver configuration by mounting the rubber bands at either ends of the hollowed out pencil. Once the rubber bands are in place, wire them in parallel so as not to create any deficiency in signal apportionment to the drivers (rubber bands). Remember, the Isobaric configuration is a 'push-push' driver arrangement. If a person were to wire in series, the signal drop from one driver to the next would cause mass amounts of low level distortion in the rubber bands.

I think it's a perfect idea for nerds who have pocket protectors and MP3 players and want a little bass to make the experience a little more aural.

Re:home made. (0)

Anonymous Coward | more than 11 years ago | (#4305197)

well, you have old hard drives lying around, yes? There was that guy at CMU who made speakers out of drives. [cmu.edu]

(it was already on /.! please dont resubmit, you *know* they wont realise they already did this story!)

Re: MacGyver (4, Funny)

Metallic Matty (579124) | more than 11 years ago | (#4305285)

Ooooh, for a moment when they said "Build your own subwoofer," I thought they meant out of spare parts at home.

Actually, he meant, out of parts taken from another subwoofer...

See what happens when you have old episodes of MacGyver on tape?

MacGyver could break out of a turkish prison with a straw and a toothpick...

They really are good (1, Redundant)

YahoKa (577942) | more than 11 years ago | (#4305006)

They are pretty simple to build and for $80 you can have a subwoofer that will make your whole body shake. I've seen it done.

Re:They really are good (0)

Anonymous Coward | more than 11 years ago | (#4305077)

You mean lick the wires?

Re:They really are good (0)

Anonymous Coward | more than 11 years ago | (#4305317)

Yeah, it will make your whole body shake and sound like shlt too.

how is this news? (1)

dcstimm (556797) | more than 11 years ago | (#4305008)

How is this news? I like the article on how to do it, but I people have been building subs for a long long time. You can go to radioshack and buy everything you need to build a good sub. Optimus is not the greatest but Im sure you can get the encloserment and then go to a good speaker shop to buy a 12" sub speaker. Plus the 4 gage wire and blah blah blah.

Oh well. Cool article!

Re:how is this news? (2)

EastCoastSurfer (310758) | more than 11 years ago | (#4305229)

I agree about the how is this news part. Building enclosures is nothing new and by itself isn't terribly interesting. Now an article on how someone fit some obscene amount of subs into a tiny foreign car would have been much more interesting. I still remember running the numbers to see if we could fit 4 12inch subs in my friends nissan 240sx back when I was into that kind of stuff :)

should you ?? 'working with hands' bias on slashdo (0)

Anonymous Coward | more than 11 years ago | (#4305009)

imagine if someone said 'should you write an xxxxx'
where xxxxx is some computer software thing. now
since this project uses wood and screws and drills,
slashdotter is gonna think 'oh my god! how do they do that'
but to people who do that sort of thing all the time,
this project is as though a throw-away perl script.


given a little basic wood and wood tool knowledge
this is not a humungous project (unlike
all the stuff that gets plastered
on freshmeat and slashdot every day, like
KDE, gnome, debian, redhat, and hundreds of
other projects that take inordaintely more
time than this project did)

lol wot a crock of shit (-1, Flamebait)

narkotix (576944) | more than 11 years ago | (#4305020)

mod me down but thats wot i think this article is. besides...what an UGLY looking box....looks like a 50's style washing machine or something

Re:lol wot a crock of shit (-1, Flamebait)

Anonymous Coward | more than 11 years ago | (#4305039)

Where's yours, big nuts?

Not a Subwoofer (5, Insightful)

iamjim (313916) | more than 11 years ago | (#4305016)

This is some guys expierence making an ENCLOSURE. I got excited, wrapping a cone w/ wire, finding a good permenant magnet. NOPE - This is something that MANY MANY people have done. It is making a subwoofer that would be the challenge. Then again, making a proper enclosure isn't easy...

Next time get the title of the article right!

Re:Not a Subwoofer (2, Insightful)

Mononoke (88668) | more than 11 years ago | (#4305040)

I got excited, wrapping a cone w/ wire, finding a good permenant magnet.
That's the driver. I believe he is talking about making a subwoofer, which would imply the use of the device at lower frequency ranges of human hearing.

A driver, no matter what size it is, is not a subwoofer. Subwoofers can be made with a single 12" driver, with four 18" drivers, or even a 30" driver.

No, he doesn't tell you how to make a driver.

Re:Not a Subwoofer (0)

Anonymous Coward | more than 11 years ago | (#4305121)

i always thought a subwoofer referred to a driver whose purpose was to reproduce the low bass. you're an ass anyways.

Lacking a bit.. (1)

nukey56 (455639) | more than 11 years ago | (#4305019)

I was hoping this would talk a little more about the mechanical aspects of building the actual driver, instead of being mostly a guide to fitting a sub into a box. Or am I just missing something?

Re:Lacking a bit.. (1)

Mononoke (88668) | more than 11 years ago | (#4305059)

I was hoping this would talk a little more about the mechanical aspects of building the actual driver, instead of being mostly a guide to fitting a sub into a box. Or am I just missing something?
Yes, you are missing something. A driver is not a subwoofer. I have 12" drivers in subwoofers. I have 15" drivers that are not in subwoofers.

A subwoofer is a combination of driver and enclosure designed for greatest efficiency and flattest frequency response at frequencies from 80Hz on down.

Re:Lacking a bit.. (0)

Anonymous Coward | more than 11 years ago | (#4305133)

you're an ass.

Another article (1)

sagi (314445) | more than 11 years ago | (#4305024)

Here's another guide [slashdot.org] for building your own subwoofer.

Re:Another article (1)

sagi (314445) | more than 11 years ago | (#4305038)

Sorry - the correct URL [overclockers.com.au] .

Check out Hometheaterforum.com (5, Informative)

sdo1 (213835) | more than 11 years ago | (#4305026)

The DIY section on HTF [hometheaterforum.com] is filled with people doing DIY subs.

The DIY section on avsforum [avsforum.com] also has some info.

DIY subwoofers [diysubwoofers.org] is another place to start.

In fact a google search [google.com] yields about 16,000 results with the words "DIY" and "subwoofer".

Which brings me to...

Is this really news?

-S

Subwoofers are a cool DIY project (1)

Snarfangel (203258) | more than 11 years ago | (#4305030)

Subwoofers are one of the few things that home audio do-it-yourselfers can build that is at least somewhat cost-effective in terms of material, effort, and result (well, maybe planar ribbon loudspeakers, though the lines of magnets might be a bit of a pain). Put a nice, massive driver and bandpass filter into a well-dampened box of appropriate volume and spousal approval and you'll have something that not only adds to the depth of music, but will also give you a martini "shaken, not stirred" during your James Bond movie marathon. :)

you know (2)

Squarewav (241189) | more than 11 years ago | (#4305032)

its not that uncommon to build your own stereo equipment, people have been doing it for as long as there was stereos. In fact most car stereo junkies I know of build their own speaker boxes as it is much cheaper then paying someone else to do it and chances are will look better as it matches the look of your car. Had the guy made his own speaker I would be impressed

For More Homebrew Goodness... (2, Interesting)

DonnarsHmr (230149) | more than 11 years ago | (#4305037)

There is a strong and thriving community of DIY audio enthusiasts. I myself built my own tube preamp, interconnects, and power amp. Try http://www.speakerbuilding.com/ for information about building speakers. For broader information, go to http://www.stereophile.com and click on "Links 2 Die 4" (the l337-ness is theirs, not mine) and then on the DIY link.

Uh, who gives a crap? (0)

Anonymous Coward | more than 11 years ago | (#4305048)

WTF does this have to do with anything intresting?

Re:Uh, who gives a crap? (-1, Offtopic)

povman (610505) | more than 11 years ago | (#4305081)

Do you know what stfu means?

Re:Uh, who gives a crap? (0)

Anonymous Coward | more than 11 years ago | (#4305178)

No. Enlighten me.

YES, you should (1)

MissMyNewton (521420) | more than 11 years ago | (#4305050)

Every 16 year old with a ride builds his own for his car. You know... boooommm boom boom boom boooommmm

If they can, you can too. (And if you *can't*, please turn in your geek badge right now ;-))

Besides, your (legal, of course) MP3s and Quake III Arena will sound much better with one!

Not too detailed... (4, Informative)

cei (107343) | more than 11 years ago | (#4305056)

Sure, it's great that the guy documented his project so others could replicate it, but it might be more useful if he mentioned how he calculated the optimal port length. Specs on resonance frequency, Vas, power handling, and other things might be nice as well. Or why he chose a ported [audiovideo101.com] sub rather than an isobaric [audiovideo101.com] or sealed [audiovideo101.com] design or something else. Not that there's a correct choice, but knowing a little bit about how and why he made his decisions might help others down the line.

Re:Not too detailed... (0)

Anonymous Coward | more than 11 years ago | (#4305061)

he probably didn't calculate anything, hes just a geek who built a subwoofer based on simple knowledge, it probably works like shit.

Loudspeaker Design Cookbook by Vance Dickason (3, Informative)

mhesseltine (541806) | more than 11 years ago | (#4305139)

I own the 4th and 5th editions of this book, and it has everything you would ever want on enclosure design. You can pick it up from Crutchfield, or I'm sure Amazon, Barnes and Noble, etc. should carry it.

Score -1, clueless (5, Informative)

Anonymous Coward | more than 11 years ago | (#4305063)

People have been doing this for a long time (Building ENCLOSURES, not subwoofers). All those little bassheads that you see going down the street with civics shaking the windows out of your house do it themselves. It's simple and easy, and most companies that sell subwoofers provide very detailed and specific guides (more than that page) about port length for ported boxes, volume calculations, building materials, construction methods, and countless other things. And boy, MDF is a bitch to work with.. you need a carbide blade for the saws, and screws strip SO easily. Not to mention MDF dust is very carcinogenic (search around google) and smells bad. Expect this thing to stink up wherever you put it for a while. Most of the guides are in PDF format (For car audio) from the major sub manufacturers' sites: www.kicker.com [kicker.com] www.rockfordfosgate.com [rockfordfosgate.com] etc Forque (Chester Bochan)

Yes!! You should!!! (3, Informative)

Bobartig (61456) | more than 11 years ago | (#4305082)

Building a sub is a great project. As a single driver speaker, it requires no crossover, and therefore is relatively easy to design/build. Plus, with some careful planning, you can get amazing results.

I've built a couple Subs based around the Shiva Mk II driver this guy used, along with a 250W plate amplifier from partsexpress, and it is amazing. Easily produces useable bass down to 20 hz in a sealed enclosure (F3 of something like 17.3 hz in a 1.7 cu ft. box, if I remember correctly...). An adire sub kit easily rivals subs in the $1000-$1200 range.

Listening to one of these explains why audiophiles don't like those Sat/sub computer multimedia sets, and tend to call them a "bunch of crap". None of them produce any useable bass below 50-60 hz, and a lot of HT systems are designed such that the sub only STARTS playing from those frequencies down.

Having said that, I don't see why this is front page news on /.

Re:Yes!! You should!!! (1)

GigsVT (208848) | more than 11 years ago | (#4305194)

it requires no crossover

How is that? Do you really want your sub trying to produce 10khz tones?

Re:Yes!! You should!!! (2)

EastCoastSurfer (310758) | more than 11 years ago | (#4305255)

I was thinking the same thing. Maybe the original poster meant no crossover internal in the enclosure?

He got the port length wrong, but... (0)

Anonymous Coward | more than 11 years ago | (#4305085)

But, that's OK, considering all that will do is change the tuning frequency..

Quote:
---
The ports are 4" and flared from Madisound. They came with a short tube to connect them, but it wasn't long enough. I went to Home Depot and bought some 4" schedule 20 (the thin stuff) pvc and 4 schedule 20 4" couplings. I realized after sealing the sub up that I had mismeasured the ports and made them too long. But, after emailing Patman in panic, he assured me that the only thing that would change would be the tuning frequency.
---

So much for frequency response..

He built a bass tube not a subwoofer! (2)

Mustang Matt (133426) | more than 11 years ago | (#4305086)

That's nothing special is it?
You can buy your own plans for tubes or boxes all over the place.

A subwoofer is the actual speaker which he just popped into place right?

You can even download software to help you download dimensions:
subwoofer enclosure software [tripod.com]

Re:He built a bass tube not a subwoofer! (1)

Mononoke (88668) | more than 11 years ago | (#4305102)

A subwoofer is the actual speaker which he just popped into place right?
Wrong. That's the driver. The 'Subwoofer' is the combination of driver and enclosure.

A driver is nothing until you put it in an enclosure.

Re:He built a bass tube not a subwoofer! (0)

Anonymous Coward | more than 11 years ago | (#4305140)

you're still an ass!

Re:He built a bass tube not a subwoofer! (0)

Anonymous Coward | more than 11 years ago | (#4305271)

if i ever meet you, I'M GOING TO KICK YOUR ASS lalalalalalalala

What about free-air subwoofers? (2)

Mustang Matt (133426) | more than 11 years ago | (#4305163)

They have no enclosure!

Regardless, why is this a big deal? I used to build boxes back in high school. They usually sounded awful but not always. Just had to get them sealed up and calculate the dimensions properly.

I had two JL 10W1's that sounded pretty good for a relatively cheap speaker.

Re:What about free-air subwoofers? (2)

EastCoastSurfer (310758) | more than 11 years ago | (#4305267)

They have no enclosure!

Not exactly. Free air subs just don't have to be boxed, but they still need an enclosure. Most of the time these are used in cars and the trunk actually becomes the enclosure.

Good=Loud? (2, Informative)

shoemakc (448730) | more than 11 years ago | (#4305088)

There's more to building quality speakers then just mounting drivers in a box: particularly with ported designs. Building a sub with controlled, tight bass is the challenge; anyone can build a deafening "rumble box".

-Chris

Re:Good=Loud? (1)

rob-fu (564277) | more than 11 years ago | (#4305261)

In high school I messed around with this stuff. My metric on how good the bass was depended upon how much I itched my nose -- the vibration made my nose itch uncontrollably. The more itching, the better the bass.

Buy an iSub and sound stix. (2)

crovira (10242) | more than 11 years ago | (#4305089)

given the low price for a system these days and the crap sound you'll get if you do it wrong, buy an iSub and a couple of sound stix at the Apple store and save yourself a couple of years of apologising for the crappy looking cabinets.

Re:Buy an iSub and sound stix. (1)

foo12 (585116) | more than 11 years ago | (#4305108)

You're a bit confused: the SoundStix are the two satellites plus the sub. The iSub itself it made to work in conjunction with the built-in speakers on the old, CRT iMacs, the built-in speakers on the eMac, and Apple's add-on, amplified speakers. The industrial design of the subs are the same, but the specs aren't.

What is missing (5, Insightful)

divide overflow (599608) | more than 11 years ago | (#4305090)


This isn't even a good explanation for how to create a subwoofer enclosure. It is completely missing any information on the critical variables that describe the attributes of the low frequency driver as well as the procedure for designing the enclosure and crossover network to work with the driver to produce an optimized system. You can't just throw any old speaker into a given enclosure and expect a decent result. If you don't design the enclosure around the Thiele-Small parameters for the driver you put in it you are basically throwing the driver into a pretty box and ignoring the most important factors...how the completed system will perform.

And I wouldn't be a good slashdotter if I didn't mention are several computer programs that help with the design of speaker systems. They are really helpful for designing a subwoofer. I used such a program to design the subwoofer in my car.

Poor chap (0)

Anonymous Coward | more than 11 years ago | (#4305238)

This poor chap must have thought "I don't need no stinking math, for a living I'll build custom subwoofer enclosures and sell them!" Now you're telling him he needs math for that too.

Commerical cylindrical subs (1)

rudib (300816) | more than 11 years ago | (#4305098)

Well, if you ain't that much of a DIY guy, you can buy such (not actually sonosub, but much sturdier) cylindrical subwoofers from SV subwoofers [svsubwoofers.com] . The latest PC+ series is already given praise over Home Theater across the web. And the CS Ultra series is... Well... Check for yourself [hometheaterhifi.com] ! :)

Oh, and they are an Internet sale only company - you buy subwoofers directly from them, there are no other dealers between you and them.

And I don't own a SVS ... yet ^_^ (and neither do I work for them)

Re:Commerical cylindrical subs (1)

tang (179356) | more than 11 years ago | (#4305299)

I own the 20-39 pci (its 39 inches tall and is tuned to 20hz). The best sub I've owned hands down, it uses little space, since its so tall, and is awesome for home theater, and it's very musical too, altho I tend to keep it turned down pretty low due to my taste in music.
I can recommend one 200%.

That is just a box (0)

Anonymous Coward | more than 11 years ago | (#4305100)

He did not build a sub, he built a box. There is a big difference. If anyone is interested in a custom made sub, do a web search, Richard Clark built a sub with a diameter of over 50 inches.

nuttin special (1, Insightful)

Skal Tura (595728) | more than 11 years ago | (#4305110)

There isn't anything special on making a woofer by yourself, first i thought that the dude made the element by himself but naawh... You really don't need much skill to make a subwoofer, just some maths and a little skills to make the casing. If you have proper tools it shouldn't even take long for an experienced woofer builder. With experienced i mean knowing the little tips & tricks to avoid hazzle and problems. tho, that woofer probably sounds nice but there isn't anything special... i wonder where ./ is going with news like this, do they wanna do a news report when i assemble my next woofer? lol Or perhaps some of my other projects like liquid cooling to make cpu run at -15 to -10 celsius degrees, or perhaps mobo box sized server... NOTE TO MODDERS: I didn't want to troll but there simply isn't any idea to report stuff like this, there isn't anything special on making a subwoofer by yourself.

Mislead and then let down by /. yet again! (1)

Nemith (114402) | more than 11 years ago | (#4305119)

When i first read the title to this story, I said to myself, "Wow, some guy actually hacked together some magnets and other supplies and built his own subwoofer!" But it's just an enclosure!

Wow, so what he built his own enclosure. This is common practice in both home and car audio and hardly worth the post on /.

I build an enclosure for 2 subwoofers for my car when I was 16 years old. It's not hard, and there are many MANY pages just like this one out on the web.

Another in a long line of "You can, but should you?" projects.
Well if you can handle power tools, and a couple of simple caculations to get the right enclosure and port size for your subwoofer, then HELL YES! I still have mine in my car that are custom fit, and sounds better than the cheap enclosure i had before. I even used pvc pipe as the ports :P

wow, staggers the mind! (1)

Meowharishi (550240) | more than 11 years ago | (#4305122)

Imagine a beowulf cluster of these!! hooo-yeah baby!! uh uh uh love that pussy!!

Ha! That's nothing! (3, Informative)

Noose For A Neck (610324) | more than 11 years ago | (#4305130)

Just take a gander at the king of all subwoofers [mit.edu] they made out of an old hard drive motor at MIT!

Re:Ha! That's nothing! (1)

HeyZuess (35885) | more than 11 years ago | (#4305147)

Now that is building a subwoofer!!

Wait, but ... (3, Funny)

daTimster (588551) | more than 11 years ago | (#4305132)

... where are the Lego guys?

wow! that's amazing! (-1, Troll)

Anonymous Coward | more than 11 years ago | (#4305145)

michael actually said something sensible, logical, and non-childish on the /. front page! that's just plain amazing!

Might as well build a waveguide (1)

flyneye (84093) | more than 11 years ago | (#4305157)

might as well get 15' of 10" PVC put a 10" woof appr.2/3 the way down(go get specs yourself) and get bass to stir your guts.

Re:Might as well build a waveguide (1)

GigsVT (208848) | more than 11 years ago | (#4305201)

At a couple frequencies.

That tube is only going to resonate at a few frequencies that are harmonics of each other. Yeah, you will hit one certain spot really really hard, but other frequencies will be attenuated.

Re:Might as well build a waveguide (1)

flyneye (84093) | more than 11 years ago | (#4305279)

well yeah,figure up the specs for something around 32hz and throw on bachs toccatta and fugue.bumpin the eq around the freq. you tuned the waveguide to kinda helps.(course most folk would be happy with somethin around 50hz,but hey make it go mooooo)
i got another tuned woof plan that puts a 15" in the top of an openhead drum and tunes by filling drum with water till its where you want it.of course you could split hairs all day but this really is projects for experementation. if you want audiophile go spend the money.

moljnir! (5, Interesting)

StandardDeviant (122674) | more than 11 years ago | (#4305165)

One 26 inch home-brew subwoofer, coming right up! [mit.edu] . They built it with the driver from an ancient hard drive. For those not up on Norse mythology, moljnir (several spellings seen) was the unstoppable hammer of the gods, carried by Thor himself. I'd say a building-shaking sub comes pretty close to that description. ;-)

Hmmm (2)

zeno_2 (518291) | more than 11 years ago | (#4305171)

This is an article on how to build a sub box, not the speaker itself. Many people build their own sub boxes, this is a pretty nice one from what I can see, but its not much different then whats in the trunks of many people across the world today..

more like... (0)

Anonymous Coward | more than 11 years ago | (#4305174)

you can, but why fucking bother?

sigh.

sometimes DIY is not better. if your time is worth $50 an hour, spend it better buying one if it takes more than an hour to make one. don't be a jerkoff.

You Have Got To Be Kidding Me (2)

thelizman (304517) | more than 11 years ago | (#4305193)

You call this news? Is SlashDot that hard up (or worse, flaccid) that this page worthy of being posted?

There are many fine sites out there with information on building subwoofer enclosures. While the construction of this one was fairly robust and adequate, the design will likely have a very poor response. There are too many no-no's here to cover for a SlashDot comment. Y'all should try some real sites for a start:

  1. teamROCS Technical [teamrocs.com]
  2. The World Famous Eddie Runner and Installer.com's Tech Pages [installer.com]

Upcoming Article On Slashdot (0)

Anonymous Coward | more than 11 years ago | (#4305204)


CD Racks - Methods and practices of mounting on walls.

Re:Upcoming Article On Slashdot (0, Flamebait)

fishnuts (414425) | more than 11 years ago | (#4305246)

Without the essential instructions on finding studs to mount to, of course.

this is*BOOOOOMMMMM* sweet! (1)

drik00 (526104) | more than 11 years ago | (#4305208)

This is *BOOOOOMMMMM*cool cool, I think *BOOOOOMMMMM* i'm gonna try it *BOOOOOMMMMM* for my home *BOOOOOMMMMM* theatre!! The low end *BOOOOOMMMMM* would add a *BOOOOOMMMMM* lot to the experience *BOOOOOMMMMM* .

J *BOOOOOMMMMM*

*BOOOOOMMMMM*

Wouldn't this design inherently suck? (3, Interesting)

sakusha (441986) | more than 11 years ago | (#4305210)

I'm no acoustic engineer, but it seems you'd have to do some calculations to make sure the resonant cavity matches up to the speaker. I don't see any evidence that he's done any calculations whatsoever. How would you go about determining the optimal size and shape of the cabinet? Or does it not matter on such low freqs?

Wouldn't this design inherently suck? (2, Funny)

Anonymous Coward | more than 11 years ago | (#4305223)

What? Do you think this is for listening to MUSIC or something?

Re:Wouldn't this design inherently suck? (0)

Anonymous Coward | more than 11 years ago | (#4305224)

Who cares? Electronics are so cheap now, he just pumps up the power, gets a bigger driver, whatever. They want it NOW, and they want MORE.

Do you really picture a snotty 18 year old ricer breaking out the HP calculator and a piece of paper?

Like a friend of mine told me, about building your own hi-fi enclosures, even if you only have a woofer, if you pump up the power the highs will eventually come out of there.

My opinion. (-1, Flamebait)

Anonymous Coward | more than 11 years ago | (#4305211)

I'd like to shove that fucking woofer so far up this guy's ass he's REALLY going to feel the bass!

Nothing personal. I'd like to do it to all of you asshole creeps that just have to be the center of attention with your fucking moronic boom fucking boom boom. Have a nice day. Jackass.

There is one trick to doing this right (4, Informative)

Dr. Spork (142693) | more than 11 years ago | (#4305214)

This guy is obviously a pretty weak hardware hacker. I say "obviously" because if he knew what he were doing, his construction page would be covered with formulas about material desity, air volume, port circumferance, port length, and many other tuning-related issues. It look to me like this guy thought of a design that seemed right a priori, bought a driver, and started cutting. Pathetic!

This has to be the worst Slashdot how-to ever. There is absolutely nothing geeky about doing it blind like this, especially considering how much information is available about doing it the right way. So kids, don't do this at home; do better!

This is truly pathetic (0)

Anonymous Coward | more than 11 years ago | (#4305240)

With the knowledge that I'm being redundant, this is perhaps one of the most irrelevant things I have ever seen on Slashdot. I would rather see nothing at all than a link on how to build a speaker cabinet. Nerds and powertools do not mix.

Sure, I could just stop viewing Slashdot, but I would miss the thousands of asinine comments that make me feel like a normal person. Instead, I have chosen to join the ranks of people who actually believe that anyone else on the Internet gives a damn what they think.

Ladies and Gentlemen, Slashdot has reached a new low (and not just because I've finally posted a comment).

Re:This is truly pathetic (0, Troll)

Crusty Oldman (249835) | more than 11 years ago | (#4305260)

Just so they understand that they really suck: I agree with you!

Re:This is truly pathetic (0)

Anonymous Coward | more than 11 years ago | (#4305281)

So where is IAgreeWithThisPost [slashdot.org] when you need him?

Why... (0)

Anonymous Coward | more than 11 years ago | (#4305252)

Why is it that almost every article I read has 70-bazillion (rough estimate) comments complaining that the article isn't news? What's the point of that? You're obviously not accomplishing anything by posting, because you'll inevitably come back the next day and find 10 more articles that you don't consider news.

Re:Why... (0)

Anonymous Coward | more than 11 years ago | (#4305274)

Welcome to /.!

I think I'll keep my JBL SB-5 (2)

Openadvocate (573093) | more than 11 years ago | (#4305288)

I think I'll keep my JBL SB-5. I can deliver all those sounds that you can't hear but feel. :) A cool device with 4 speakers inside where they are facing eachother 2 by 2 in 3 chambers. PDF tech doc [jblproservice.com] .

I have built subs for my car, but the only problems is that even when you get the sizes calculations right, it just doesn't always sound right. So this time I have settled with a pre-built one, the advantage here was the I tried a few in my car to find the one that sounded right in my car.

Too bad more highschoolers dont read /. (5, Funny)

NeoSkandranon (515696) | more than 11 years ago | (#4305302)

about 300 people out of my 1400 member highschool could have gotten alot out of this article..or rather the comments. they all seem to be of the mind that you can throw a pair of 15" subs in a plywood box and throw it in the back of your car, and then they wonder why it sounds like an amplified fart when the bass hits.

Acoustic suspension (3, Interesting)

Alien Being (18488) | more than 11 years ago | (#4305309)

In the 20 or so years that i've been listening to them, subs which use relatively small, high-excursion drivers in a sealed enclosure have been the best, especially for percussion. They need more power, but it's worth it.

Ported subs just don't seem to have the *punch*, and it's tiring to listen to music which has a lot of info near the resonant freq of the port.

The last line on the website. (0)

Anonymous Coward | more than 11 years ago | (#4305315)

What was it the last line on their website said?
Something about it controlling his pacemaker and a a heavy load on the machine could be fatal to the webmaster?.
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