Easy Button End Table MAX 26.5" x 24" x 37.5" hwd - Page 4 - AVS Forum
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post #91 of 178 Old 03-13-2009, 04:02 AM - Thread Starter
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Actually you are right, I did change it, and I told you back in post #53

Regards,
Dan
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post #92 of 178 Old 03-13-2009, 11:59 AM
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raaahhh I missed it

This is a good point I should have cut it after the assembly.
Especially to be sure they are concentric

Dan I saw the time you were posting. 4.02 am. do you ever sleep?
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post #93 of 178 Old 03-14-2009, 12:56 PM - Thread Starter
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Lately I am going NonStop™

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Dan
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post #94 of 178 Old 03-20-2009, 06:04 PM
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Quote:
Originally Posted by NEO Dan View Post

Smoke,
you win a cookie. Thanks for letting me know. It's sad that I missed it, but at over 2300 views someone else should have caught this by now. I'll update the cut sheet drawing.

Nobody caught it because the original cut sheet was correct. My buddy had the original cut sheet, was willing to choke on the MDF dust, and had his crew do the cuts for me. I finally picked up the pieces today, somewhat bummed that the dimensions would be wrong. Wouldn't you know it, I dry fitted everything together an hour ago and the pieces fit like a glove!

Thanks Dan!

I'll start gluing tomorrow and start a build thread. O'yea, I'm stuffing the box with an IXL 18.4.4, powering with an EP2500, HPF'ering with a Reckhorn B, and dialing in with a BFD and REW/RS SPL combo.

--Doug

Easy Button End Table w/IXL18.2...1700cf room + REW = Base bliss!
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post #95 of 178 Old 03-20-2009, 09:11 PM - Thread Starter
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Quote:
Originally Posted by RockRover View Post

Nobody caught it because the original cut sheet was correct. My buddy had the original cut sheet, was willing to choke on the MDF dust, and had his crew do the cuts for me. I finally picked up the pieces today, somewhat bummed that the dimensions would be wrong. Wouldn't you know it, I dry fitted everything together an hour ago and the pieces fit like a glove!

Thanks Dan!

I'll start gluing tomorrow and start a build thread. O'yea, I'm stuffing the box with an IXL 18.4.4, powering with an EP2500, HPF'ering with a Reckhorn B, and dialing in with a BFD and REW/RS SPL combo.

--Doug

Interesting, and thanks for the info. I really had begun to have doubts about publishing plans. I feel really bad for wasting anyones time and money . I think I may have introduced errors into the plans at the time I was working on the modified version for Stinn.

That's an interesting processor combo, if you get the chance do a loop-back measurement with REW and post it up, I'm currious about what the low end rolls off like. I would guessing that you will need to make a wide parametric cut between 30-60 hz, as I hear the B1 rolls off early.

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Dan
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post #96 of 178 Old 03-20-2009, 09:36 PM
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Dan - Yea, maybe when you moved the width 1" and height 1" for Stinn. I printed the cut-sheet before that.

What ever you do PLEASE don't quit your plan designs! About 2 month's ago I thought Best-Buy was the cheapest place to buy a 'quality' sub! It's because of your cut-sheets that I continued to research and learned enough to give DIY a go. It gave me a starting point on a box design, and I could spend time on other topics like WinISD, drivers, amps, etc. Had I had to learn box design on top of it all I might have just skipped DIY altogether.

I plan on posting before and after REW analysis. Never heard about the early roll-off of the B1. The HPF of the B1 starts at 10hz, and on up from there. I'll use the BFD if my PEQ needs go past what the boost/cut levels' can muster from the B1.

Funny how most on this site prefer the EQ.2 and on the Shack most are modded Art Clean Box's or the B1. I would have done the MIC2200 for my signal boosting and HPF duties, but I read your analysis on it about a day too late! Nice deals on the Bay for used MIC's btw.

Thanks again Dan, and keep designing!

--Doug

Easy Button End Table w/IXL18.2...1700cf room + REW = Base bliss!
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post #97 of 178 Old 03-27-2009, 05:57 PM
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the sub is finish will all the equipment recommended by Dan. This subs rocks and it has deep bass for home theater but also sharp bass for a rock concert.
Good Job Dan
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post #98 of 178 Old 03-27-2009, 06:29 PM - Thread Starter
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Smoke,
thanks for the kind words. Congrats on pulling it and the drawings together.

Regards,
Dan
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post #99 of 178 Old 04-16-2009, 08:58 PM
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Hi Dan,
thanks so much for your post and designs. Would this enclosure be the one for all around use(70% HT 30%music) this would also be my one and only sub. between the EP2500, the MAL-X, mdf, and the little misc hardware, ill be out of money. do i need the other electronics being described? i read of the subsonic filter for this build. which do i need? I apologize for my noob q's but i did a search for subsonic filter and only found an explanation of what it is.
Thanks
Brandon
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post #100 of 178 Old 04-17-2009, 01:31 AM
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My Maelstrom-X should be here within one month.

Has anyone verified the tuning of this enclosure? NeoDan states 10.5-14Hz in the first post.


Shiva-X, 2x Tempest-X, 2x Maelstrom-X2, MiniDSP etc

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post #101 of 178 Old 04-17-2009, 11:09 PM - Thread Starter
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Quote:
Originally Posted by ?mwf15? View Post

Hi Dan,
thanks so much for your post and designs. Would this enclosure be the one for all around use(70% HT 30%music) this would also be my one and only sub. between the EP2500, the MAL-X, mdf, and the little misc hardware, ill be out of money. do i need the other electronics being described? i read of the subsonic filter for this build. which do i need? I apologize for my noob q's but i did a search for subsonic filter and only found an explanation of what it is.
Thanks
Brandon

The filter is a requirement, without it you risk having to buy another woofer.

Without the filter the woofer can operate as if it were just sitting out in free air, this can occur when ever the source material contains energy below the boxes tuning.

Actually the situation is somewhat worse than free air as the mass of the air in the port is basically added on to the moving mass of the of the driver .

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Dan
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post #102 of 178 Old 04-17-2009, 11:16 PM
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Quote:
Originally Posted by Fackamato View Post

My Maelstrom-X should be here within one month.

Has anyone verified the tuning of this enclosure? NeoDan states 10.5-14Hz in the first post.

im wondering that too. im about to build a sub and im wondering if this one will be fine to 80hz. another post showed a big spike at 80.
Dan, would the smaller easy button be better for this?
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post #103 of 178 Old 04-18-2009, 10:30 AM - Thread Starter
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Quote:
Originally Posted by NEO Dan View Post

The filter is a requirement, without it you risk having to buy another woofer.

Without the filter the woofer can operate as if it were just sitting out in free air, this can occur when ever the source material contains energy below the boxes tuning.

Actually the situation is somewhat worse than free air as the mass of the air in the port is basically added on to the moving mass of the of the driver .

add to this post:
The port does provide some loading to about one third octave below tuning. So there is some cushion there.

Quote:
Originally Posted by ?mwf15? View Post

im wondering that too. im about to build a sub and im wondering if this one will be fine to 80hz. another post showed a big spike at 80.
Dan, would the smaller easy button be better for this?

They are very similar in design, I had no issues running them up to 160hz.
What 80 spike are you referring to? link please

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Dan
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post #104 of 178 Old 04-18-2009, 06:58 PM
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Hey Dan, given your dimensions, box volume, port length and surface area, there seems to be a significant 1st port resonance at 80hz. Here's the link to the Unibox sim

http://www.avsforum.com/avs-vb/attac...0&d=1240029545

Do your Sims show this as well?
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post #105 of 178 Old 04-18-2009, 11:46 PM - Thread Starter
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Yea I am aware, fortunately the sim is way overblown as compared to actual measurements. The measurements show just a little wiggle in the phase. Have a look in the threads for the smaller versions, the measurements have always been posted. In this respect it preforms way better than a straight port, heck the prior version would have had to have >160" long straight ports to hit the same tuning. Sim that up

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Dan
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post #106 of 178 Old 05-12-2009, 11:39 AM
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Argh! Still no Maelstrom-X in my possession! It seems the factory is having a hard time sourcing the voice coils for the M-X...

At least I can dream...

"disclaimer": (I didn't order from Exodus Audio, but through StreamingAudio which buys directly from the factory afaik)

Anyone built this thing yet? Verified the tuning?


Shiva-X, 2x Tempest-X, 2x Maelstrom-X2, MiniDSP etc

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post #107 of 178 Old 05-12-2009, 05:41 PM
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Quote:
Originally Posted by Fackamato View Post


Anyone built this thing yet? Verified the tuning?

NeoDan is pretty accurate with these things, I'd say it's what he posted, or close enough that no one would know the difference anyway.
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post #108 of 178 Old 05-12-2009, 08:15 PM - Thread Starter
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Hehe,
funny you should bump the thread. I came by to see if there was an update from the fella I lent my WT2 out to to verify the tuning. I'll go bump up his thread and see if we can get some info

Regards,
Dan
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post #109 of 178 Old 05-13-2009, 12:20 AM
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Quote:
Originally Posted by NEO Dan View Post

Hehe,
funny you should bump the thread. I came by to see if there was an update from the fella I lent my WT2 out to to verify the tuning. I'll go bump up his thread and see if we can get some info

Goodie!


Shiva-X, 2x Tempest-X, 2x Maelstrom-X2, MiniDSP etc

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post #110 of 178 Old 05-25-2009, 04:49 AM
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Any updates?

My M-X Neodan super super edition should be finished by the end of August.

As I don't have Wal-Mart here, I'm wondering how much stuffing I should use. Is there any recommendation?

Question: any words on the tuning yet?


Shiva-X, 2x Tempest-X, 2x Maelstrom-X2, MiniDSP etc

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post #111 of 178 Old 09-17-2009, 12:39 AM
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Quote:
Originally Posted by NEO Dan View Post

OK so this is it for this series, I got lucky and found an alternate layout that allows for ~1/3 increase in volume over the original.

Specs:
26.5" x 24" x 37.5" hwd
Volume 8'³/13827.5625"² before driver displacement
Port 3-2.5" x 7" total area >8" ID port
Tuning is as yet unverified, likely in the range of 10.5-14Hz

Use a 1.25" round over for the port, MLCS item #8659
The cheap pillows from WalMart will still be a good idea.










Dan,

I have been looking at this design for quite some time. I am in the process of working out my 6 and 7 chennle sin my 7.1. I have a bunch of things going on-actually too many, but I am at least planning things and trying to get things moving. This box can be used for a Mal X, but is there a way to flip it upright and put the driver on what used to be the base and have the box tall with a smaller footprint and the same overall dimensions?

Is there any deterent to facing the driver and port to the wall other than clearance? This would eliminate need for a grill and the finish would be very simple because it will be totally covered as the other cabs in the room except for the LMS's.

Thanks,

Robert
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post #112 of 178 Old 09-17-2009, 04:45 PM - Thread Starter
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Robert,
this would be the side mount option

Regards,
Dan
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post #113 of 178 Old 09-17-2009, 05:33 PM
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I like both option, but I need it tall like my other cabs. Driver would be on the side and so would the port and then stand it up on end?
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post #114 of 178 Old 09-17-2009, 05:40 PM
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Quote:
Originally Posted by robertcharles View Post

I like both option, but I need it tall like my other cabs. Driver would be on the side and so would the port and then stand it up on end?

Would it be possible to put feet on the port side and have it lifted a bit on that side, and let it "breath" out of the bottom? That may make it to top heavy with the driver on the top of the cabinet though?.?.? hummmm....

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post #115 of 178 Old 09-17-2009, 10:11 PM - Thread Starter
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Or you could down fire, but that's it there's nowhere else to put anything

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Dan
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post #116 of 178 Old 09-17-2009, 11:03 PM
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That is a good idea, but how far from the floor does it have to be to be fully effective. I have a little height problem where they are going. I can go as high as about 45 inches. would that be enough. Also, when these cabs are going full tilt, do they vibrate and bounce around much? I wanted to do something like a stand with it. I guess I could make a shelf right above it and put the cab just below and effectively use the shelf as the stand top and eliminate the cab as a possible direct vibration source.
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post #117 of 178 Old 09-18-2009, 05:06 PM - Thread Starter
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Robert,
I don't think they would move when downfiring. 4-6" legs are enough so it would be under 45" tall

Regards,
Dan
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post #118 of 178 Old 09-18-2009, 05:54 PM
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do those cornered ports offer the same performance as straight ports?

seems like they would be turbulence city.

Listen. It's All Good.
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post #119 of 178 Old 09-18-2009, 08:49 PM
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Quote:
Originally Posted by NEO Dan View Post

Robert,
I don't think they would move when downfiring. 4-6" legs are enough so it would be under 45" tall


Dan,

I think I am going to go for the box in the original setup. I might have to give it a few twists to make it fit into the setting where it is going. I have decided on the finishing touches for the other channels, and I am going to use a set of Klipsch forte's for the side surrounds. They will be enclosed in a set of columns that will possibly be utilized for DVD storage also. I am really excited about the prospects of this.

Have you done any testing on the cabinet with the Mal 18?


Thanks,

Robert
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post #120 of 178 Old 09-18-2009, 09:25 PM - Thread Starter
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Quote:
Originally Posted by LTD02 View Post

do those cornered ports offer the same performance as straight ports?

seems like they would be turbulence city.

I've pushed the prior version really hard, it has a smaller port. If pushed really hard without a SSF & below tuning you can get port noise, but this is to be expected @ 6Hz & 2"+p-p excursion. A couple hertz higher and you have enough pressure to really rattle the doors and windows in there frames.

Long ago I built a low tuned single 12" Driver was an OEM copy of the JL 12w1. The box was ~2.8'³ and I had to take the 4" port tube from the front through the back and up a foot and back into the box IIRC the tuning was <16Hz. This thing went nice and low but sounded crappy. I think it was a port velocity and port resonance problem. I don't hear any of that with the End Table design, and I am significantly tougher when listening for these things now than as I was then. I haven't built this one yet, but I wish I had already built & tested this version so I could say with certainty it's "perfect" I'm building on what I've learned from building the previous versions. I don't see any reason that this one should any problems though.

Regards,
Dan
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