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First DIY project for a guy looking to upgrade - multiple sealed 18s? - Page 20

post #571 of 1005
Great work Gorilla!
post #572 of 1005
Thread Starter 
Quote:
Originally Posted by mjaudio View Post

Great work Gorilla!

Thank you sir!
post #573 of 1005
You are an animal. smile.gif

I've been out in the garage trying to get something done; but my heater crashed and it's 10 degrees in there. You guys in the warm climates suck.
post #574 of 1005
awesome work, if i could find someone to build me 2 dual opposed enclosures that look like yours for my aurasound ns-18s that would be crazy hah, seems like making use of them will be easier then selling them locally.
post #575 of 1005
ok reading through your thread, i am 90% inspired to do my own dual opposed subs, seems much easier then cutting some fancy bracing, and seems like you only need to cut baffles with 2 different diameter circles. lets see how this pans out,

Thank you for your thread! time to maybe get off my ass hah.
post #576 of 1005
Gorilla,

You are both nuts and the man! I read thru the entire thread just now and saw somewhere that you weren't using a HPF. Did you ever start using one or not?
post #577 of 1005
Why would he need a high pass filter?
post #578 of 1005
Just found this thread, as I have not ventured into the DIY area in a while. I made a new thread last night asking opinons on my build, and read this entire thing today.

First off, absolutely fantastic work Gorilla!! Those cabinets look so good. This build really shows the value that can be had in the DIY ventures and has me motivated!
post #579 of 1005
Thread Starter 
Quote:
Originally Posted by ChopShop1 View Post

Just found this thread, as I have not ventured into the DIY area in a while. I made a new thread last night asking opinons on my build, and read this entire thing today.
First off, absolutely fantastic work Gorilla!! Those cabinets look so good. This build really shows the value that can be had in the DIY ventures and has me motivated!

Thank you sir. The DIY value can't be beat if you're willing to put in the work. I will say the more you do the easier/smoother it goes. I will check out your thread as well.
Quote:
Originally Posted by bass addict View Post

You are an animal. smile.gif
I've been out in the garage trying to get something done; but my heater crashed and it's 10 degrees in there. You guys in the warm climates suck.

Heh, a true DIYer would take over the dining room in such circumstances. smile.gif LOL @ 'warm' climate in Philadelphia. I guess i'ts all relative. tongue.gif
Quote:
Originally Posted by ufokillerz View Post

ok reading through your thread, i am 90% inspired to do my own dual opposed subs, seems much easier then cutting some fancy bracing, and seems like you only need to cut baffles with 2 different diameter circles. lets see how this pans out,
Thank you for your thread! time to maybe get off my ass hah.

DO IT! We are here to help. You are welcome to PM me and we can chat to get some ideas together.
Quote:
Originally Posted by spectralman View Post

Gorilla,
You are both nuts and the man! I read thru the entire thread just now and saw somewhere that you weren't using a HPF. Did you ever start using one or not?

All 20 pages? That's a real time commitment, heh. HPF? Heck no. biggrin.gif
post #580 of 1005
Thread Starter 
Update - grills frames, magnets, and fill/compound, done for Box #3. Next up: terminal cutout, sanding, then PAINT!

Too bad I don't have the next round of drivers yet. tongue.gif





post #581 of 1005
I don't want to hijack your thread, Gorilla but I'm REALLY interested in your build. The last DIY subs I made were a pair 320L sonosubs with the TC2000 15's. I've been in contact with NEODan about using the 18HO in one of his Easy Button slot ported boxes. He said to go with the biggest one. How do you think it would compare output-wise with your d.o. design? If you want me to start a new thread, just tell me to.
post #582 of 1005
Thread Starter 
Quote:
Originally Posted by spectralman View Post

I don't want to hijack your thread, Gorilla but I'm REALLY interested in your build. The last DIY subs I made were a pair 320L sonosubs with the TC2000 15's. I've been in contact with NEODan about using the 18HO in one of his Easy Button slot ported boxes. He said to go with the biggest one. How do you think it would compare output-wise with your d.o. design? If you want me to start a new thread, just tell me to.

I'm not familiar with his designs but it should be pretty simple to model in WinISD if you know the size of the enclosure and the tuning point.

Let's assume we're comparing a dual opposed box with 2 drivers that is sealed with a vented enclosure the same size and one driver. A rough guess would put the vented enclosure a few DB higher from the tuning point up to 35-40hz range where the dual opposed will take over. Of course the sealed system will have the ability to extend deeper without compression as well - as well as the ability to handle twice the power due to the two drivers.

Are you space limited or fund limited? If fund limited, ported/vented will give you the most output for your buck, but if you can afford to double the drivers/power, there are advantages to doing so.
post #583 of 1005
Thread Starter 
Box #3 has the terminal cutout done and is ready for paint. I actually painted a few of the sides with a flat black paint as a base coat and it doesn't look too bad! A few more coats of this and it would actually look pretty decent on it's own. The paint is still drying in the pictures so a bit blotchy but you get the idea.


post #584 of 1005
hmm looking at the wood i had previously cut out, looks like i can make my sub (4 pieces front and back faces ) 23" wide, 26" high thats the size of the front baffles i previously made, and i have the baffle pieces and everything else for (11 pieces baffle )21.5 x 24.5, just have to figure out how deep i want it for and rip a few pieces. just have to decide if i want to get off my ass, 2 gallons of duratex sitting here too that i hope is still good.

bought a plunge cut saw, 2 of them in fact, that i've been waiting to use.

any suggestions on how deep i would want to go? plugging drivers into winisd doesn't tell me anything hah, not too good with that i guess. the only thing i've never been too comfortable with is my router, all those rpm's still has me scared or something.

would you consider making more cuts to your baffles to lessen the weight?
post #585 of 1005
Thread Starter 
My box is 23w x 25h x 28d and nets around 7 cubic feet so you will need somewhere around the same depth.

Check out the FAQ I wrote last week:
http://www.avsforum.com/t/1443078/new-to-diy-faqs-in-here

As for cutting holes in the baffles I assume you meant the bracing? That is possible, but I'm not too concerned about weight.
post #586 of 1005
Quote:
Originally Posted by Gorilla83 View Post

My box is 23w x 25h x 28d and nets around 7 cubic feet so you will need somewhere around the same depth.
Check out the FAQ I wrote last week:
http://www.avsforum.com/t/1443078/new-to-diy-faqs-in-here
As for cutting holes in the baffles I assume you meant the bracing? That is possible, but I'm not too concerned about weight.

thanks, i will probably make it around 30d minus probably 1/16th or 1/8th of a inch however much my blade takes off. , since i have 2 sheets of 3/4" thick 5'x5' baltic birch that have been sitting around since last year, i pray it isn't warped yet. probably 24x26x30, its not that much bigger then yours, and my drivers take up way more space! do you think it will work out ok? or should i aim for something thats deeper, say 32" etc, Thanks!

i will probably put more bracing in mine, mainly because i have them previously cut out already for the most part. probably 3 braces instead of your 2 and lighten then up a bit

my biggest question is that with dual opposed, is there a specific distance between the motors? i ask because the drivers i plan to use are 12" deep from mounting point to back of motor if thats what you call it.

also if one driver was 1/4" off in terms of mounting on the baffle, would it matter asides from aesthetics?

will read your faq later on, i mean i do ok with diy its more about being lazy. i actually did parts of 1 sealed box, but gave up halfway due to too many projects, now i know patience and dry fitting is the key!

sorry if i am thread jacking, let me know if you wanted me to message you instead!
post #587 of 1005
Thread Starter 
Quote:
Originally Posted by ufokillerz View Post

thanks, i will probably make it around 30d minus probably 1/16th or 1/8th of a inch however much my blade takes off. , since i have 2 sheets of 3/4" thick 5'x5' baltic birch that have been sitting around since last year, i pray it isn't warped yet. probably 24x26x30, its not that much bigger then yours, and my drivers take up way more space! do you think it will work out ok? or should i aim for something thats deeper, say 32" etc, Thanks!
i will probably put more bracing in mine, mainly because i have them previously cut out already for the most part. probably 3 braces instead of your 2 and lighten then up a bit
my biggest question is that with dual opposed, is there a specific distance between the motors? i ask because the drivers i plan to use are 12" deep from mounting point to back of motor if thats what you call it.
also if one driver was 1/4" off in terms of mounting on the baffle, would it matter asides from aesthetics?
will read your faq later on, i mean i do ok with diy its more about being lazy. i actually did parts of 1 sealed box, but gave up halfway due to too many projects, now i know patience and dry fitting is the key!
sorry if i am thread jacking, let me know if you wanted me to message you instead!

You can use the box volume calculator in the boxnotes program - there is a link in the FAQ document. It will take dimensions and convert to a usable internal net volume. I'm not sure what volume your drivers require, but if you stay within the recommended range by the manufacturer you should be good. If your drivers are 12" deep and your box depth you are planning is around 30" you will be fine.
post #588 of 1005
Quote:
Originally Posted by ufokillerz View Post

thanks, i will probably make it around 30d minus probably 1/16th or 1/8th of a inch however much my blade takes off. , since i have 2 sheets of 3/4" thick 5'x5' baltic birch that have been sitting around since last year, i pray it isn't warped yet. probably 24x26x30, its not that much bigger then yours, and my drivers take up way more space! do you think it will work out ok? or should i aim for something thats deeper, say 32" etc, Thanks!
i will probably put more bracing in mine, mainly because i have them previously cut out already for the most part. probably 3 braces instead of your 2 and lighten then up a bit
my biggest question is that with dual opposed, is there a specific distance between the motors? i ask because the drivers i plan to use are 12" deep from mounting point to back of motor if thats what you call it.
also if one driver was 1/4" off in terms of mounting on the baffle, would it matter asides from aesthetics?
will read your faq later on, i mean i do ok with diy its more about being lazy. i actually did parts of 1 sealed box, but gave up halfway due to too many projects, now i know patience and dry fitting is the key!
sorry if i am thread jacking, let me know if you wanted me to message you instead!

Distance for the motors is pretty much enough room for them to vent properly if they have pole vents.
post #589 of 1005
Quote:
Originally Posted by Gorilla83 View Post

Box #3 has the terminal cutout done and is ready for paint. I actually painted a few of the sides with a flat black paint as a base coat and it doesn't look too bad! A few more coats of this and it would actually look pretty decent on it's own. The paint is still drying in the pictures so a bit blotchy but you get the point.

How about a sexy closeup of those terminals!
post #590 of 1005
Thread Starter 
Quote:
Originally Posted by popalock View Post

How about a sexy closeup of those terminals!

Right now box #3 just has a 3 x 3 7/8" cutout hole in it, no terminals yet. smile.gif

BTW the cutout openings are 1 3/4" from the rear baffle and 1" up from the bottom.
Edited by Gorilla83 - 12/10/12 at 12:53pm
post #591 of 1005
Quote:
Originally Posted by popalock View Post

How about a sexy closeup of those terminals!

Lulz. You know we're a bunch of HT nerds when I hear statements like that. biggrin.gif
post #592 of 1005
Quote:
Originally Posted by bass addict View Post

Lulz. You know we're a bunch of HT nerds when I hear statements like that. biggrin.gif

Haha, I didn't even think of that till you said something. Definitely a comment my wife would have raised an eyebrow to...lol

Rilla's 4th box is near complete! Just need to cut the terminal and give it a good sanding. I'll let him do all of the finishing work...


Edited by popalock - 12/10/12 at 5:20pm
post #593 of 1005
Comparison still going down this weekend?
post #594 of 1005
Thread Starter 
Quote:
Originally Posted by gpmbc View Post

Comparison still going down this weekend?

Yes it is, can't wait! biggrin.gif
Quote:
Originally Posted by bass addict View Post

Lulz. You know we're a bunch of HT nerds when I hear statements like that. biggrin.gif

Austin and I are probably some of the worst offenders, heh.
Quote:
Originally Posted by popalock View Post

Haha, I didn't even think of that till you said something. Definitely a comment my wife would have raised an eyebrow to...lol
Rilla's 4th box is near complete! Just need to cut the terminal and give it a good sanding. I'll let him do all of the finishing work...

You are the MAN! It will get the Gorilla/Duratex finish next week. cool.gif
post #595 of 1005
Thread Starter 
Why, what's this??? I'm officially tapped out of play funds for a bit, but I'm well prepared for when the next 4 drivers arrive. biggrin.gif

NOM NOM NOM



post #596 of 1005
lol you are a crazy man
post #597 of 1005
Nice Gorilla!! I'll be interested to see how it does for you. I really like mine.
post #598 of 1005
Ohhh man. Rockin'!
post #599 of 1005
Thread Starter 
Quote:
Originally Posted by Sibuna View Post

lol you are a crazy man

Haha, I guess my wife would agree with you. Sadly though there are many on here way worse than I. biggrin.gif

Quote:
Originally Posted by gpmbc View Post

Nice Gorilla!! I'll be interested to see how it does for you. I really like mine.
Quote:
Originally Posted by Scott Simonian View Post

Ohhh man. Rockin'!

A couple notes - I did a quick power up and check last night:
1) The amp arrived very well packaged and protected. The exterior box was a little beat up but inside it was unscathed.
2) The box/amp/contents stink like cheap Chinese tools. biggrin.gif
3) I powered up and checked both channels briefly with one driver (4 ohm stereo) and it WORKS! I was kind of expecting it not to, haha. We will see how it holds up once pushed hard, but I tested it to around half gain carefully as I didn't want to smoke my 900RMS rated driver with 4400 watts going to it, haha.
4) The initial power up puts the fans at full tilt for a few seconds and OMG they are loud. Once backed down to idle not too awful though, on par with a stock EP4000 I suppose. I'm planning on moving the amp to my amp closet where my Crown sits though - I'm not a big fan of fan modding amps.
post #600 of 1005
Quote:
Originally Posted by Gorilla83 View Post

Why, what's this??? I'm officially tapped out of play funds for a bit, but I'm well prepared for when the next 4 drivers arrive. biggrin.gif
NOM NOM NOM


Nice!! Glad the amp arrived working. Now it is time for 4 more drivers!!smile.gif
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