eDesign DIY12" w/LMS-R and Inuke3000DSP - AVS Forum
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post #1 of 16 Old 04-23-2012, 10:51 AM - Thread Starter
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Figured i would post up this recently completed project since i havent seen much on the LMS-R series.

Specs of the build -
Tc Sounds LMS-R 12"
eDesign DIY 12" kit (cheaper then buying tools and MDF)
Inuke3000dsp

I originally had the lms-r and a VMP-12 in a 1.8cf box. It was great, up until i forgot to turn down the gain and snapped the spider off the cone/weight pole on the VMP. I ended up re-epoxying it, but the tuning was no where near the same.

Fast forward to now, without a proper sub for a while, i decided to just finish this box and throw it all together for the time being. I still need to get a router and do the edges and finish it.

Overall, im happy with the output of the sub! The port is as-is at 18in total, which win isd says 20.7hz tuning.

I played with a few HPF on the inuke and there charted as noted on the REW sheet below. I wish the inuke offered lower HPF settings than 20hz. I did do some minor eq work in the 30,60,80,100 ranges to boost it up. These are based off what win isd shows for xmax. Measurements were taken by a RS 33-2055 meter, mac book pro. I use a DI4000 to amp the reciver signal to the pro amp, and also convert my main's signals to XLR for my other amp.



And a finished picture (well not totally finished lol),



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post #2 of 16 Old 04-27-2012, 12:32 AM
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not sure why nobody posted...

neat. how are you planning to finish it?

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post #3 of 16 Old 04-27-2012, 05:35 AM
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Great looking build! How are you liking that inuke?
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post #4 of 16 Old 04-27-2012, 06:09 AM
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In addition to talking about your sub some more, tell us about your amp rack. This is the diy section after all. :-)

YID DIY
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post #5 of 16 Old 04-27-2012, 07:20 AM
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hey, which issue is that Maxim?

btw, nice build.
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post #6 of 16 Old 04-27-2012, 07:41 AM
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Man that is smooth from 40-20!

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post #7 of 16 Old 04-27-2012, 08:05 AM - Thread Starter
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Thanks all!

Im wanting to do some thing like a bedliner or hammertone finish. Im just waiting on funds to buy a router to hit the edges before i finish it.


The inuke amps have been great so far. Have not had any issues with them. The sub amp is ran off a diff breaker then the mains. I have a usb tripped powerstrip being triggered by my avr (poor mans relay lol), that turns on the di4000 and other i nuke for the mains.


The rack, well its kind of a Frankenstein type deal. I originally had a 2post 36" rack, however when i moved last, the movers lost the side rails. So i had to rig something up, so i got a cedar 2x4 and made a little version haha.

I plan to 86 the rack, and either get a new ent center / build one because my kid is about to be walking before i know it lol.

I'll try to find some other pictures on the project. I kept forgetting because it took forever to get the ED kit.
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post #8 of 16 Old 05-26-2012, 11:14 PM - Thread Starter
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After finishing the box and finally doing the sub crawl. I have eq'd the sub and taken measurements with REW.

I am pretty stoked on how amazing a single 12" can be, and am considering doing another one as well.

I didn't get a chance to buy a router, so i eye balled the curves and it seemed to come out pretty good id say. The wife even approves of its looks lol, however she said i cannot build a bigger one...yet...lol

I finished the box with the rustoleum spray on bed liner, no primer. It was sanded to 150grit and then coated 3 times. Unfortunately i got a drip on the face plate, but its not super noticeable.

Anyways, onto the pictures!




Over all, i am happy with the output down low. War of the worlds is pretty much insane for my small 14x20' room lol.
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post #9 of 16 Old 05-27-2012, 02:27 AM
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"I wish the inuke offered lower HPF settings than 20hz."

you can jury rig something close.

let's say that you want a 2nd order 12db/oct hp filter around 10hz.
set high pass 1 at 20hz, 12db/oct
then go to the parametric eq tab
set filter 1 to gain= -12db, frequency= 20hz, quality/type= HS12

what is happening here is the hp filter starts rolling off the signal at 12db/oct at 20hz, but then the second filter is boosting the signal at 12db/oct from 20hz down to 10hz, as the second filter rolls away at 10hz, the effect of the first filter comes back in.

the cost is that because you are beating down the signal (green line) by 12db, you will lose 12db of signal to noise in the signal chain, but for practical purposes that won't matter.


LL

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post #10 of 16 Old 05-27-2012, 07:01 AM
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Quote:
Originally Posted by noobzorta View Post

After finishing the box and finally doing the sub crawl. I have eq'd the sub and taken measurements with REW.

I am pretty stoked on how amazing a single 12" can be, and am considering doing another one as well.

I didn't get a chance to buy a router, so i eye balled the curves and it seemed to come out pretty good id say. The wife even approves of its looks lol, however she said i cannot build a bigger one...yet...lol

I finished the box with the rustoleum spray on bed liner, no primer. It was sanded to 150grit and then coated 3 times. Unfortunately i got a drip on the face plate, but its not super noticeable.

Anyways, onto the pictures!




Over all, i am happy with the output down low. War of the worlds is pretty much insane for my small 14x20' room lol.


That looks nice!!!
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post #11 of 16 Old 05-28-2012, 12:57 PM - Thread Starter
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Quote:
Originally Posted by NicksHitachi View Post

That looks nice!!!

Thanks! For a budget build, i think it came out pretty nice!. I loved using the speakon connectors, makes everything much easier once its said and done. Well i guess besides having a 4x11g snake under the carpet lol.

I really havent seen much in the diy of the lms-r 12 segment. Seems like a pretty good driver for what it is.
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post #12 of 16 Old 05-28-2012, 02:51 PM
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Just curious, what are the dimensions of that box and what's the tuning?

I looked at their site but I don't understand the 18hz tune with the dimensions they posted. Then again, I'm not the best at figuring that stuff either way.

Did you install a longer port?


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Twelve 10" NHT subwoofer build.
Cloning of a NHT VR-3.
2 ACI 15" subwoofers.

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post #13 of 16 Old 05-28-2012, 05:47 PM
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Here is the link to the sub box used for this build.
http://www.edesignaudio.com/product_...roducts_id=905

It looks like it is 13 x 18 x 26
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post #14 of 16 Old 05-28-2012, 07:15 PM - Thread Starter
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Quote:
Originally Posted by Erich H View Post

Just curious, what are the dimensions of that box and what's the tuning?

I looked at their site but I don't understand the 18hz tune with the dimensions they posted. Then again, I'm not the best at figuring that stuff either way.

Did you install a longer port?

I think the tuning per winisd was something like 20.7hz or so. I measured the port to 18" end to end with flare, before i glued it together. I think the total vol for the box was 3.8cf or so, not sure if they calculated the brace they sent along with it.

Ive been wondering if possibly a radius'd cone might pick up some power if i put it behind the port. Kind of like a smooth transition?
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post #15 of 16 Old 05-29-2012, 12:48 PM
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Quote:
Originally Posted by LTD02 View Post

"I wish the inuke offered lower HPF settings than 20hz."

you can jury rig something close.

let's say that you want a 2nd order 12db/oct hp filter around 10hz.
set high pass 1 at 20hz, 12db/oct
then go to the parametric eq tab
set filter 1 to gain= -12db, frequency= 20hz, quality/type= HS12

what is happening here is the hp filter starts rolling off the signal at 12db/oct at 20hz, but then the second filter is boosting the signal at 12db/oct from 20hz down to 10hz, as the second filter rolls away at 10hz, the effect of the first filter comes back in.

the cost is that because you are beating down the signal (green line) by 12db, you will lose 12db of signal to noise in the signal chain, but for practical purposes that won't matter.


So you could do this and get to just about any frequency (lo pass) between 10 and 20 hz, just by playing with the filters?

room
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post #16 of 16 Old 05-31-2012, 03:26 AM
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Quote:
Originally Posted by LTD02 View Post

"I wish the inuke offered lower HPF settings than 20hz."

you can jury rig something close.

let's say that you want a 2nd order 12db/oct hp filter around 10hz.
set high pass 1 at 20hz, 12db/oct
then go to the parametric eq tab
set filter 1 to gain= -12db, frequency= 20hz, quality/type= HS12

what is happening here is the hp filter starts rolling off the signal at 12db/oct at 20hz, but then the second filter is boosting the signal at 12db/oct from 20hz down to 10hz, as the second filter rolls away at 10hz, the effect of the first filter comes back in.

the cost is that because you are beating down the signal (green line) by 12db, you will lose 12db of signal to noise in the signal chain, but for practical purposes that won't matter.


Very cool post.. if i wanted to do an 18hz 24db/octave butterworth filter on an inuke what would i do?

ive spent like 20 minutes trying to figure this out and im sucking at it

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