My first DIY build. Mal X in an Easy Button MAX. - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 69 Old 09-09-2009, 01:30 PM - Thread Starter
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I posted a while back about building a sonotube, (which I may still do once my theater is done) but for now I wanted to build something a little smaller for my living room. I decided on NEODAN's easy button max design for the time being. I have no previous woodworking skills, but I'm fairly handy. It will be powered by a EP2500. I've read through NEODAN's thread a few times, but I don't think I ever found what the final tune was for the box in it's MAX configuration. Anybody know?

So, it has been a few years since I worked with MDF. I forgot how much I hate it. I really should have had on a mask. I used a table saw to cut up 2 sheets of 3/4" MDF. (bonus! I got home and looked at the receipt, they charged me for 1/2" mdf)



I am not known for having a neat work area. Plus I'm in the middle of replacing all my windows, a little but of siding, and new trim on the inside. All while building this sub and trying to get my theater done in the next couple years.



Gen II Maelstrom X I just got.



I plan on getting a jasper jig for my future projects. (When I'm done with everything else I'd like to build some statements for my LCR.) In the meantime, I just built my own circle jig.



Of coarse I broke my cutting bit with only a little but left to go. I think I may have tried to cut too much. I did 2 passes and should have done 3. I finished the cut with my jigsaw.



I don't have a lot of clamps, so I had to make due. This is sitting out in my driveway right now.

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post #2 of 69 Old 09-09-2009, 01:33 PM
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that last picture is awesome! looking forward to your build.

Listen. It's All Good.
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post #3 of 69 Old 09-10-2009, 06:54 AM
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jailguy,
love the last pic. i did something similar before going to harbor freight and buying some new clamps (~$3.50 per 36" clamp on sale). i used many dumbbells and 45lb weight plates to compress and squeeze the box together. whatever works!!!
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post #4 of 69 Old 09-10-2009, 08:02 AM
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good stuff. glad i'm not the only one who does stuff like this. if you hate mdf, you should try cutting 18" circles with a drill, jig, and circular saw
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post #5 of 69 Old 09-10-2009, 09:23 AM - Thread Starter
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Quote:
Originally Posted by Dradius View Post

good stuff. glad i'm not the only one who does stuff like this. if you hate mdf, you should try cutting 18" circles with a drill, jig, and circular saw

The circles weren't so bad. It was cutting down the 2 sheets with the table saw. So much of the dust collecting bag.
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post #6 of 69 Old 09-10-2009, 09:54 AM - Thread Starter
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I just ordered the 1.25" roundover bit last night. I also ordered a 5/8" roundover for all the edges. I plan on finishing this in a DIY bedliner since eventually it will be in my HT behind a AT screen.

Today's progress. I can't go much further until I receive the large router but for the port edges.

Gluing the port runners to the bottom.


Gluing the back on.
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post #7 of 69 Old 09-10-2009, 09:11 PM
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That looks promising, keep us updated.

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Originally Posted by Ivan Beaver
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post #8 of 69 Old 09-10-2009, 09:38 PM
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WooHoo


Nobody's measured the tuning of the MAX. It'll be low


I'm kinda concerned you are going to work your self into a tough spot on the assembly. I worked my way from the inside out. So take care to dry fit as you go. You may need to shave a part or two to prevent a gap on an outer panel by going this route.

I went in this order

inner structure
inner baffle
sides, so you can square up the inner structure and inner baffle, this requires creative clamping
top and bottom port braces
top and bottom
front baffle
back port baces
back

then I did my cutouts

Regards,
Dan
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post #9 of 69 Old 09-11-2009, 06:18 AM
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Make sure you are careful with the 1.25" radius roundover. I came close to a serious injury with mine because I had the router speed set to high when I turned it on and the bit came loose from the collet (which was tight enough that it left gouges in the shaft of the bit).

Keep the speed low (and though it's not applicable in this case because of the location, consider letting your table saw do some of the work first with a properly placed 45 degree cut on the corners if you do the edges of cabinets or something in the future)

Be ready for a serious fountain of MDF dust.
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post #10 of 69 Old 09-11-2009, 07:09 AM - Thread Starter
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Quote:
Originally Posted by NEO Dan View Post

WooHoo


Nobody's measured the tuning of the MAX. It'll be low


I'm kinda concerned you are going to work your self into a tough spot on the assembly. I worked my way from the inside out. So take care to dry fit as you go. You may need to shave a part or two to prevent a gap on an outer panel by going this route.

I went in this order

inner structure
inner baffle
sides, so you can square up the inner structure and inner baffle, this requires creative clamping
top and bottom port braces
top and bottom
front baffle
back port baces
back

then I did my cutouts


Hmm, I hope everything will work out. I kinda followed what Skinn did with his modified easy button max. https://www.avsforum.com/avs-vb/showthread.php?t=1094560

I even put one side on last night.

I'm all done for now until I get my bit.

I couldn't help but dry fit all the pieces in place, except for the one side and the front baffle.


We'll see how everything goes in a week or so when I can finish it up.


As far as tuning...someone on a different forum figured the tuning at 12.5htz. I also plan on using the pillows inside, which I believe lowered your tuning a bit. Forgive my noobness, but if it is tuned that low, do I need a SSF?
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post #11 of 69 Old 09-11-2009, 07:14 AM - Thread Starter
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Quote:
Originally Posted by amik View Post

Make sure you are careful with the 1.25" radius roundover. I came close to a serious injury with mine because I had the router speed set to high when I turned it on and the bit came loose from the collet (which was tight enough that it left gouges in the shaft of the bit).

Keep the speed low (and though it's not applicable in this case because of the location, consider letting your table saw do some of the work first with a properly placed 45 degree cut on the corners if you do the edges of cabinets or something in the future)

Be ready for a serious fountain of MDF dust.

I just picked up a brand new Bosch router, but I don't think I noticed a speed control. I may have to look into it a little more. Hmm
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post #12 of 69 Old 09-11-2009, 02:10 PM
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seal up them inner joints with some caulk. just be sure you do it while the box is still open. also depending upon what color you intend to paint or if you want to laminate, paint the inside of the slot port before final assembly. i couldn't reach completely inside and i can see the mdf color inside the port. nobody else notices, but i surely do...

keep up the good work!!
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post #13 of 69 Old 09-11-2009, 02:48 PM
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Nice work. Where did you buy the sub? How much?

Thanks Scott
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post #14 of 69 Old 09-11-2009, 02:55 PM
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for those long spanned seams I recently found out about something called a bowclamp, google it. lookes easy enough to make yourself with a bit of trial and error. Looks good, keep it up

XBL Krimzen Rage
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post #15 of 69 Old 09-12-2009, 02:30 PM - Thread Starter
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Quote:
Originally Posted by RXPorlando View Post

Nice work. Where did you buy the sub? How much?

Thanks Scott

I bought mine off of AVSer Warpdrv. You can buy them at diycable.com for $390 I believe.
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post #16 of 69 Old 09-12-2009, 10:12 PM
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looking good!!! I look forward to seeing what it looks like done.

Blasting brown notes for 10 years and counting!

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post #17 of 69 Old 09-13-2009, 07:51 AM
 
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that is really cool!!! so basically your port is that long slot down the middle of the box?
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post #18 of 69 Old 09-13-2009, 08:10 AM - Thread Starter
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post #19 of 69 Old 09-13-2009, 08:25 AM
 
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Quote:
Originally Posted by Jailguy View Post

Yes, plus on the sides. So you will have 3 ports 2.5" x 7" x 8ft.

Here are NEODAN's designs.

Regular https://www.avsforum.com/avs-vb/showthread.php?t=1018171

MAX https://www.avsforum.com/avs-vb/showthread.php?t=1093893

wow. those are HUGE ports....does this make the subwoofer play deeper? eliminate chuffing? what is the reason the ports are so long and large? sorry, but i'm a newb.....trying to figure out how to start my own DIY...

here is a post i put up..if anyone can help me i would be very greatful!!!

i want to do a design with a 15" RE Audio SRX15d(x) driver..... maybe sealed with 2 x 4" flared ports 17" long.....

i will be using an MFW-15 amplifier rated at 350watts (spoke to RE Audio and they said the SRX 15" sub is rated for 300 watts rms so it would be the best choice from them)

i want to build an MFW-15 killer basically but using the same amplifier. ANY help would be GREATLY GREATLY GREATLY appreciated!!!

size of the box is not an issue....i can build as big or small as is necessary, i certainly have the room...


sorry to hijack...i just really need some help here.
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post #20 of 69 Old 09-13-2009, 09:33 AM
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You should start a build thread pure-evil. You'll get lots of help

Blasting brown notes for 10 years and counting!

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post #21 of 69 Old 09-13-2009, 11:46 AM
 
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You should start a build thread pure-evil. You'll get lots of help

i am trying to..i started one....and still looking for more help.
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post #22 of 69 Old 09-13-2009, 12:14 PM
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Quote:
Originally Posted by Pure-Evil View Post

i am trying to..i started one....and still looking for more help.

I noticed you are posting everywhere. You have your own tread now so you should stop thread jacking before someone complains.

Regards,
Dan
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post #23 of 69 Old 09-13-2009, 03:32 PM - Thread Starter
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Quote:
Originally Posted by Pure-Evil View Post

wow. those are HUGE ports....does this make the subwoofer play deeper? eliminate chuffing? what is the reason the ports are so long and large? sorry, but i'm a newb.....trying to figure out how to start my own DIY...


Can't really help you there. I'm very new as well to all this. If you think about it, the ports aren't all that big since they are pretty "thin" @ 2.5". From what someone told me the tuning should be around 12.5hz.

I still need to figure out my SSF. I plan on getting a BFD when my HT is up and running. But would like to pickup a eq.2 or reckhorn 2 for using it in my living room. Hmmm....
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post #24 of 69 Old 09-13-2009, 04:30 PM
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The BFD is not an SSF unfortunately, the eq.2 has no gain, and both the reckhorn and eq.2 don't go very low filter wise(not as low as advertised). And to be clear about it neither does the Behringer MIC2200 but I have a workaround that uses the PEQ to fix that.

Regards,
Dan
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post #25 of 69 Old 09-13-2009, 05:17 PM - Thread Starter
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Quote:
Originally Posted by NEO Dan View Post

The BFD is not an SSF unfortunately, the eq.2 has no gain, and both the reckhorn and eq.2 don't go very low filter wise(not as low as advertised). And to be clear about it neither does the Behringer MIC2200 but I have a workaround that uses the PEQ to fix that.

I know the bfg doesn't have a ssf. Mybe I worded my post wrong. My HT is under construction and won't be done for about a year or so. I picked up the Mal X for a decent price, but don't really need it for a year. So temporarily it is going in my living room where I don't need the eq. Not that I don't need it, but I don't care all that much how it sounds. But I wanted to get something with a ssf for help protect my sub. I was leaning towards the new Reckhorn B-2. It doesn't live up to the advertising? Right when I finally thought I made up my mind, I'm even more confused.
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post #26 of 69 Old 09-13-2009, 05:37 PM
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Just trying to save you headaches down the road... >>> Did you get the 1.25" corner round yet?

Regards,
Dan
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post #27 of 69 Old 09-13-2009, 06:22 PM - Thread Starter
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Quote:
Originally Posted by NEO Dan View Post

Just trying to save you headaches down the road... >>> Did you get the 1.25" corner round yet?

No router bit yet...It was in Missouri on Friday on it's way to WI.

What exactly do you suggest for a SSF?
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post #28 of 69 Old 09-13-2009, 06:27 PM
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MIC2200

Regards,
Dan
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post #29 of 69 Old 09-13-2009, 06:36 PM - Thread Starter
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Forgive my noobness, but if I pick up a mic2200 for ssf & a BFD for eq I'll be good?
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post #30 of 69 Old 09-13-2009, 08:47 PM
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Forgive my noobness as well, but is this a new way to do ports? Is it effective?

In terms of LFE, size does matter!
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