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DIY sub - Page 3

post #61 of 112
Quote:
Originally Posted by niners View Post

Sounds like the dsp mini has more flexibility.

Where is the best place to buy one?

Get the balanced version.... $175.00 shipped ( that was with 4way advanced plugins )
post #62 of 112
Thread Starter 
Looks like I am back to the drawing board on a woofer. What box size is required for the 21 inch mach 5 and can I run the same set up?
post #63 of 112
that sucks, but isn't going to stop you.

the css trio12 looks pretty good.
http://www.creativesound.ca/details.php?model=TRIO12

it appears to actually be a better driver than the other one (xbl and shorting rings, should be very clean) but you will need TWO drivers @ $159 each.

with the two twelve's you can make the cab slender and taller and/or you can go with a cube and mount one driver on the front/back and one pr on the left/right side, whatever works out to six cubic feet net. this will cancel out all vibrations. you could even put the pr's on the front/back and the 12's on the sides if you like the look of the big pr's staring at you.

you will probably lose a couple of db at 20 with the dual 12" option because of how you will wire the amp, but pick them back up up high because their sensitivity is higher.

edit: the 21" FTW (specs seem to have changed again), but it still looks like it wants a really large ported cab, 14 cubic feet or so. not the best choice for 6 cubic feet. it will actually produce less bass at 20hz then the other options.
LL
post #64 of 112
Thread Starter 
Quote:
Originally Posted by LTD02 View Post

that sucks, but isn't going to stop you.

the css trio12 looks pretty good.
http://www.creativesound.ca/details.php?model=TRIO12

it appears to actually be a better driver than the other one (xbl and shorting rings, should be very clean) but you will need TWO drivers @ $159 each.

with the two twelve's you can make the cab slender and taller and/or you can go with a cube and mount one driver on the front/back and one pr on the left/right side, whatever works out to six cubic feet net. this will cancel out all vibrations. you could even put the pr's on the front/back and the 12's on the sides if you like the look of the big pr's staring at you.

you will probably lose a couple of db at 20 with the dual 12" option because of how you will wire the amp, but pick them back up up high because their sensitivity is higher.

edit: the 21" FTW (specs seem to have changed again), but it still looks like it wants a really large ported cab, 14 cubic feet or so. not the best choice for 6 cubic feet. it will actually produce less bass at 20hz then the other options.


With the attached record I should be able to build a cube I assume with 2 of the woofers and 2 apr12's. Is that correct
post #65 of 112
i was simply suggesting swapping the drivers and keeping all else the same as suggested earlier including the 18" ae passives.
post #66 of 112
Thread Starter 
I will give it a try. I think ordering the kit and another woofer is the cheaper deal. I can keep the plate amp for something else.

Going to order this week
post #67 of 112
Quote:
Originally Posted by niners View Post

I will give it a try. I think ordering the kit and another woofer is the cheaper deal. I can keep the plate amp for something else.

Going to order this week

The kit dosent come with the AE 18" PRs...
post #68 of 112
Thread Starter 
Quote:
Originally Posted by Jay1 View Post

The kit dosent come with the AE 18" PRs...

Wouldn't. I use the 12 inch based on the record of dual 12's or did I miss something.

My thoughts was the 2-12's, 2 -12 ae's in a 6 cubic ft box.
post #69 of 112
"My thoughts was the 2-12's, 2 -12 ae's in a 6 cubic ft box."

My thoughts was the 2-12's, 2 -18 ae's in a 6 cubic ft box.
post #70 of 112
Thread Starter 
If that would work better I am game. I am new to this and will take the input provided.
post #71 of 112
Thread Starter 
Would the 15 apr's from creative with the two trio 12's produce the same
post #72 of 112
You're making this too complicated for your self....


Quote:
Originally Posted by Jay1 View Post

Build two of these

http://www.creativesound.ca/details.php?model=Quartet12
post #73 of 112
Thread Starter 
Quote:
Originally Posted by Jay1 View Post

You're making this too complicated for your self....

No doubt! The only thing i've bought is the plywood so far.

I need to make a decision this week.

I would prefer one box if possible though. With the mach 5 out I think the css12 is two separate or the one box with two subs with the dual apr's15's.

Would the sound be that much better from the two boxes
post #74 of 112
Two boxes placed in different locations have advantages of smoother in room response, and IMO better sounding integration with your mains.

The single sub will have an overall output advantage. You cannot do the design LTD described with two 15" PRs, you need the 18"s from AE.

You seem to be having trouble grasping the concept of these custom designs, which makes the kit an even better choice.
post #75 of 112
Thread Starter 
Quote:
Originally Posted by Jay1 View Post

Two boxes placed in different locations have advantages of smoother in room response, and IMO better sounding integration with your mains.

The single sub will have an overall output advantage. You cannot do the design LTD described with two 15" PRs, you need the 18"s from AE.

You seem to be having trouble grasping the concept of these custom designs, which makes the kit an even better choice.

I appreciate your support for sure as I learn more about diy.

Based on your response I am going to go with the single with 2 drivers and the AE 18's. I have one last likely stupid question.

I assume the 6 cf is the end result meaning I have to subtract the driver volume from the actual enclosure?

Thanks for all your help
post #76 of 112
Quote:


I assume the 6 cf is the end result meaning I have to subtract the driver volume from the actual enclosure

Yes, and any bracing you include. You would also gain back a minor amount of volume by placing stuffing (fiberglass, polyfil, etc) inside the cabinet. You can calculate the bracing here:

http://www.hometheatershack.com/foru...me-calculator/
post #77 of 112
"Based on your response I am going to go with the single with 2 drivers and the AE 18's. I have one last likely stupid question.

I assume the 6 cf is the end result meaning I have to subtract the driver volume from the actual enclosure?"

yeah, that's right, but there is a little wiggle room. if you don't hit exactly, it won't change things very much. try to error on the side of going too big vs. going too small.

and don't feel bad about feeling confused. i guarantee that for every question that you ask that "feels stupid", there are ten guys reading your post who will be glad that you asked because they have the exact same question.
post #78 of 112
Thread Starter 
So I am going to pull the trigger on the dual css 12's however one last question. They are rated at 350 rms would i be able to use the ep4000?

Based on all the materials I figure this build will be about 1k for everything.

do you think it would out perform a purchased sub in that price range
post #79 of 112
Thread Starter 
I really want to build my first DIY sub but also want to get your thoughts on whether the proposed is goign to out perform a purchased 1.2k unit or are there better options for a 6 CF enclousure

2 - css trio 12's
2 - AE PR 18's
1 - ep4000
1 - DSP mini
post #80 of 112
Thread Starter 
It's been awhile but I am back on track.

I purchased the wood and amp.

However I think I might have an issue with the ep4000 as it seems to have weird connections on the back. Maybe xlr.

Is there anyway to convert to normal rca
post #81 of 112
Quote:
Originally Posted by LTD02 View Post

and don't feel bad about feeling confused. i guarantee that for every question that you ask that "feels stupid", there are ten guys reading your post who will be glad that you asked because they have the exact same question.

I second, probably more like 25 guys are glad you're asking questions!
post #82 of 112
Quote:
Originally Posted by niners View Post

I really want to build my first DIY sub but also want to get your thoughts on whether the proposed is goign to out perform a purchased 1.2k unit or are there better options for a 6 CF enclousure


2 - css trio 12's

2 - AE PR 18's

1 - ep4000

1 - DSP mini

Dump the MiniDSP and EP4000 and pick up the iNuke 3000DSP. I picked mine up at Guitar Center for $339 after 15% off coupon.
post #83 of 112
Quote:
Originally Posted by niners View Post

It's been awhile but I am back on track.
I purchased the wood and amp.
However I think I might have an issue with the ep4000 as it seems to have weird connections on the back. Maybe xlr.
Is there anyway to convert to normal rca

No problem, get the balanced version and the Rane website has wiring charts for you. Not sure who posted them
post #84 of 112
Quote:
Originally Posted by niners View Post

It's been awhile but I am back on track.
I purchased the wood and amp.
However I think I might have an issue with the ep4000 as it seems to have weird connections on the back. Maybe xlr.
Is there anyway to convert to normal rca

No problem, get the balanced version and the Rane website has wiring charts for you. Not sure who posted them ....here they are http://www.rane.com/note110.html
post #85 of 112
Thread Starter 
So based on the attached I can purchase an xlr to rca and connect it to the subwoofer out and the output terminals from the ep4000 to run in mono is that correct?
post #86 of 112
I have one CSS TRIO12 so far [ Build Thread ] I used 2 X 12" PRs in a larger box: 24" cube.
post #87 of 112
Thread Starter 
Quote:
Originally Posted by caper_1 View Post

I have one CSS TRIO12 so far [ Build Thread ] I used 2 X 12" PRs in a larger box: 24" cube.


Thanks for sharing cape_1. It looks as though it performs extremely well.

Are you happy overall?
post #88 of 112
I am happy yes. Do I need more? yes. Eventually, I will be building some sort of horn for bone crushing bass, but the problem I have is probably not my sub but rather my mains. Also, I bought an amp too powerful for the larger box, and was used to being able to really jack up the gain on my old sealed sub, which puts this unit into trouble if I do that on the HT side of things (loud quick transients will bottom it out if I have the gain TOO high). For music though, it is VERY room filling and smooth.
post #89 of 112
Thread Starter 
caper_1 i am worried that with my amp then that this might be the wrong set up..

its an ep4000 maybe it will be different in the 6 CF box with the two 18 ae.

i also like to listen to my home theatre at loud levels.

i might wait to see what the new mach sub looks like based on what your saying...
post #90 of 112
All I am saying is that a single 12" is not enough my my space. I have found the "sweet spot" on the gain. You can actually feel a pressure wave over your body during some passages. So I think I have what I am looking for, for low end; however I am missing some mid bass, as I have a dip in my response at 70 Hz... a huge dip that would likely be filled with bookshelf or towers. But until that happens, I am adding a SDX10 to start .
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