SubMaximus -- A Large Front-Loaded Horn for UXL18 and Stereo Integrity HT 18" - Page 17 - AVS | Home Theater Discussions And Reviews
Baselworld is only a few weeks away. Getting the latest news is easy, Click Here for info on how to join the Watchuseek.com newsletter list. Follow our team for updates featuring event coverage, new product unveilings, watch industry news & more!


Forum Jump: 
 21Likes
Reply
 
Thread Tools
post #481 of 520 Old 07-23-2014, 07:47 PM - Thread Starter
AVS Addicted Member
 
LTD02's Avatar
 
Join Date: Oct 2003
Posts: 17,907
Mentioned: 59 Post(s)
Tagged: 0 Thread(s)
Quoted: 1081 Post(s)
Liked: 1477
posted.

Listen. It's All Good.
LTD02 is online now  
Sponsored Links
Advertisement
 
post #482 of 520 Old 07-31-2014, 05:00 PM - Thread Starter
AVS Addicted Member
 
LTD02's Avatar
 
Join Date: Oct 2003
Posts: 17,907
Mentioned: 59 Post(s)
Tagged: 0 Thread(s)
Quoted: 1081 Post(s)
Liked: 1477
post mortem

a couple of things have had me concerned about how close the actual measurements were to the model.

first, there seemed to be a little more 'chop' in the frequency response than in the model.
second, there seemed to be more "ripples" under 100hz than the model predicted.
third, and of primary concern was the larger drop at the last leg of about 8db or so where the model forecast about 6db or so.
fourth, the low corner seemed lower than the low corner in the model. the target low corner was around 14-15hz and actual ended up around 10hz or so (which is getting into likely signal chain rolloff).

so with all that considered, and after reviewing the layout again, I think what has happened is that with three 180 degree turns, the effective path length has been extended by about 50% relative to the model. this is good news and bad news. it means that with three 180 degree turns, a horn can be shortened by about 33%, which in this case would provide a good deal of space savings. that however is just a theory for the moment.

in order to test the 50% "effective increase in length" hypothesis, I went back to the original hornresp model and increased each leg by 50%. the picture below shows the original target in red and the 50% longer horn in black. the 50% longer horn in black exhibits all four characteristics that were noted above.

as everybody who followed along knows, the construction was a masterpiece, so I don't think any concerns rest there.

the design just missed the mark by coming in with a lower effective tuning than plan.


original hornresp model (red), 50% increase in path lengths (black):




actual measurement with low pass filter in place:






edit: updated initial 25% number to 50%.
Attached Thumbnails
Click image for larger version

Name:	submaximus actual vs model.png
Views:	58
Size:	37.9 KB
ID:	190562   Click image for larger version

Name:	actual with low pass submaximus.png
Views:	754
Size:	35.6 KB
ID:	190610   Click image for larger version

Name:	target vs model with 50 percent increase in path lengths.png
Views:	737
Size:	39.6 KB
ID:	190698  
notnyt likes this.

Listen. It's All Good.

Last edited by LTD02; 07-31-2014 at 05:34 PM.
LTD02 is online now  
post #483 of 520 Old 07-31-2014, 05:27 PM
AVS Addicted Member
 
Mfusick's Avatar
 
Join Date: Aug 2002
Location: Western MA
Posts: 27,134
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 364 Post(s)
Liked: 1500
So design up another... and I'll build it and test it. How's that ? But make it even more awesome so I can wreck my house with a few of them. The only issue I have is one dimension needs to be like 30" to fit behind screen wall. A few more inches probably ok. But the other dimensions can basically be about as big as you want. If you walk me through folding process that would be super cool.

This idea and subwoofer is just too awesome to let it die. It needs a version 2.0

-

"Too much is almost enough. Anything in life worth doing is worth overdoing. Moderation is for cowards."
Mfusick is online now  
post #484 of 520 Old 07-31-2014, 06:06 PM
AVS Addicted Member
 
Mfusick's Avatar
 
Join Date: Aug 2002
Location: Western MA
Posts: 27,134
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 364 Post(s)
Liked: 1500
SUBMAXIMUS V2.0: "home wrecker"

What drivers would work in this monster? Anything other than UXL18 ? (that driver is fine with me btw)

also, what low pass filter was in place? It doesn't look so strong...

-

"Too much is almost enough. Anything in life worth doing is worth overdoing. Moderation is for cowards."
Mfusick is online now  
post #485 of 520 Old 07-31-2014, 08:23 PM
AVS Addicted Member
 
Mfusick's Avatar
 
Join Date: Aug 2002
Location: Western MA
Posts: 27,134
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 364 Post(s)
Liked: 1500
Quote:
Originally Posted by maxmercy View Post
The model is wrong. Make all the hornresp segments PAR in the model (according to post 1, the segments are EXP) and you will see the results meet the model much more closely w/ regards to the ripple amount. I didn't notice this until after I looked at it when I entered the model into hornresp myself a few days ago. If you will build a re ?horn with a rectangular cross-section, always use PAR.

The lower corner is because of horn length/x-section areas not accounted for in the corners by hornresp.

JSS
Can you explain this more?

-

"Too much is almost enough. Anything in life worth doing is worth overdoing. Moderation is for cowards."
Mfusick is online now  
post #486 of 520 Old 10-29-2014, 08:22 AM
Member
 
justinjames's Avatar
 
Join Date: Mar 2009
Posts: 43
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 15
Quote:
Originally Posted by Mfusick View Post
That is the idea that intrigues me. I want to build a really big horn that digs down that extra octave. I know it takes 4x as much space but I think I could pull it off. If I could not get that extra octave then I will probably abandon horn idea. I am not interested in doing something average.
I've been following this build for a long time now, and its pretty amazing. I would really like to thank LTD02 for all his time and willingness to share his expertise.
justinjames is offline  
post #487 of 520 Old 10-29-2014, 08:38 AM - Thread Starter
AVS Addicted Member
 
LTD02's Avatar
 
Join Date: Oct 2003
Posts: 17,907
Mentioned: 59 Post(s)
Tagged: 0 Thread(s)
Quoted: 1081 Post(s)
Liked: 1477
asarose did the tough part.


there has been some more thinking about this in the background, but I don't want steal any thunder (so to speak).


.............


"Can you explain this more?"


par is the expansion rate of a horn that uses straight sides such as most of these folded horns.
however, by sectioning the horn into smaller sections each with an expansion rate that increases with the length, the overall result is no longer par, but can be closer to con (conical) or even exp (exponential).


while it is true that each section should have "par" as the flare rate, since the overall horn follows generally an "exp" expansion, it doesn't really matter if each section is modeled as par or exp.


if it is still confusing what is going on here, imagine a curved line. now try to approximate that curved line with a single straight line. you can't. however with 3 straight lines, you can get close. with 5 you can get really close and so on. so even if you are using straight lines, section by section, the overall smooth curve "exp" can be well approximated. just because each section uses a straight line, doesn't mean the entire horn flare is expanding as a straight line.


this post shows the neglible effect of switching the sections to "par" from "exp" because the overall horn was designed to be "exp".


SubMaximus -- A Large Front-Loaded Horn for UXL18 and Stereo Integrity HT 18"

Listen. It's All Good.
LTD02 is online now  
post #488 of 520 Old 10-29-2014, 10:08 AM
AVS Special Member
 
jpmst3's Avatar
 
Join Date: Dec 2005
Location: Davidsville, PA
Posts: 8,379
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 95 Post(s)
Liked: 231
This really is a great design John! It is one of my favorites for sure.

Kudos once again!
kingpin111 likes this.

______________________________________________
Joe = LFE Addict
Joe's LOWARHORN build
Dual LMS-5400 Ultra Endtables build
jpmst3 is offline  
post #489 of 520 Old 10-29-2014, 10:24 AM
Advanced Member
 
kingpin111's Avatar
 
Join Date: Jan 2006
Location: Saskatoon, Saskatchewan CANADA
Posts: 720
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 166 Post(s)
Liked: 109
I'd rather have a couple of these on the side walls being as they are only a couple feet wide then a ported box that jets to far out into the room.
Building vertically doesn't take up much real estate.
Can a FTW21 be used also?
I guess that would totally change the design though.

Quote:
MKtheater -I just saw 300 tonight, great movie. I literally wanted to spear people after the show
My speaker build PROJECT OVERKILL WWMTMSS
Photobucket link to build photos
Photobucket link to Project Overkill cut down
kingpin111 is offline  
post #490 of 520 Old 11-04-2014, 07:23 PM
Advanced Member
 
asarose247's Avatar
 
Join Date: Mar 2010
Location: DIY enabled in SoCal / OC
Posts: 941
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 206 Post(s)
Liked: 98
I discontinued my test in as much as things are definitely
working and it was hotter than he&& for july and august
BUT! loading vertically can help wrt to the large footprint
on the dolly vertically , the horn would be abput 35-36 inches from the 8 foot ceiling, under 1 meter
since it weighs about 350 making height adjustments could be tricky , , ,
BUT I can get the help to try at least that and the distance wrt to loading adjacent to the wall could provide other data i.e. tight to the wall, 6 inches from the wall, etc.
one measurement John had me try back in the day was in the back of the room directly into a the rear corner, with the horn at 6inches, and 1/2 and then 1 meter and the REW mike about 14 feet away at the MLP, after the near field measurements
the denon 4000 seems to make love to me in the bass department, though the 2 BF subs in an 8 ohm series/parallel combo and being 14 feet apart make any statement regarding "best bass EQ ever" seem sketchy, but
there's plenty of it, no localization
and gaming with the Xbox1 and the sound and especially bass potential there, it does get your attention
Any constructive and or feasible suggestions will be considered
after all there is NO! WAF and we all might just learn something . . .
and every now and then I hear a quiet whisper,
"MAX is lonely, build another one . . ."

DIY FAN Denon X5200 , Emotiva UPA7, for 7.3.4 ATMOS/DSU SHARP 80" LED/LCD
FL/FR: DIYSG Fusion 15's , Center: DIYSG 88 Special , SL/SR: RC3II , SRL/SRR: F-3Towers, TF & TR: SLX
2 30" BF THTLP'S , SUBMAXIMUS, 2 x Inuke6000DSP & 2 driverless LHORN cabs
http://www.avsforum.com/forum/401-di...rs-subwoofers/
www.avsforum.com/forum/155-diy-speakers-subs/1485120-submaximus-large-front-loaded-horn
asarose247 is online now  
post #491 of 520 Old 02-22-2015, 06:36 PM
Member
 
mfagains's Avatar
 
Join Date: Jan 2012
Location: New Jersey
Posts: 19
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Liked: 10
@LTD02

Would you be so kind as to double check this model for accuracy? http://www.usspeaker.com/rcf%20-%20LF18X451-1.htm

Looks like it's close to the UXL18 by a few DB and smoother than the SI H18.....

Thank you for your time and consideration.
Attached Thumbnails
Click image for larger version

Name:	RCFLF18X451.jpg
Views:	38
Size:	52.8 KB
ID:	562185   Click image for larger version

Name:	RCFLF18X451-INPUT.jpg
Views:	33
Size:	69.8 KB
ID:	562193  
mfagains is offline  
post #492 of 520 Old 02-23-2015, 06:46 AM
AVS Special Member
 
vitod's Avatar
 
Join Date: Dec 2003
Posts: 3,240
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 39 Post(s)
Liked: 26
Man, if this would be a flat pack, I'd jump on this!

Panasonic AE-2000, Carada BW 120"
Paradigm Studio 40v3 x 2, Paradigm 690 v4, Paradigm ADP 470v3 x 4
Mach 5 IXL-18 build http://www.hometheatershack.com/foru...sub-build.html, Soundsplinter RPL-15 in 9cuft vented x 2, Peavey Low Rider 18 in 3cuft sealed x 3 (nearfield) Integra 80.2, Emotiva XPA-3, UPA-5, 3 x EP2500
vitod is offline  
post #493 of 520 Old 02-23-2015, 06:51 AM
AVS Special Member
 
klipsch's Avatar
 
Join Date: May 2003
Location: PA
Posts: 1,227
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 141 Post(s)
Liked: 51
Quote:
Originally Posted by vitod View Post
Man, if this would be a flat pack, I'd jump on this!
Find a local wood shop with a CNC and make it happen based off of the sketchup files made ... shipping would be astronomical if this was a flat pack
klipsch is offline  
post #494 of 520 Old 02-23-2015, 07:16 AM
AVS Special Member
 
vitod's Avatar
 
Join Date: Dec 2003
Posts: 3,240
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 39 Post(s)
Liked: 26
Quote:
Originally Posted by klipsch View Post
Find a local wood shop with a CNC and make it happen based off of the sketchup files made ... shipping would be astronomical if this was a flat pack
True, but maybe ship it in 3-4 shipments. It will cost more, but they'll be at my door.

Panasonic AE-2000, Carada BW 120"
Paradigm Studio 40v3 x 2, Paradigm 690 v4, Paradigm ADP 470v3 x 4
Mach 5 IXL-18 build http://www.hometheatershack.com/foru...sub-build.html, Soundsplinter RPL-15 in 9cuft vented x 2, Peavey Low Rider 18 in 3cuft sealed x 3 (nearfield) Integra 80.2, Emotiva XPA-3, UPA-5, 3 x EP2500
vitod is offline  
post #495 of 520 Old 02-23-2015, 07:38 AM
AVS Special Member
 
klipsch's Avatar
 
Join Date: May 2003
Location: PA
Posts: 1,227
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 141 Post(s)
Liked: 51
Quote:
Originally Posted by vitod View Post
True, but maybe ship it in 3-4 shipments. It will cost more, but they'll be at my door.
guess it all depends on what your version of "more" is ... Get a quote on a ~4'10" x 4' board being shipped ... that was the original size of the 2 side panels required that I mocked up in sketchup
klipsch is offline  
post #496 of 520 Old 02-25-2015, 02:14 PM
Member
 
bryan.lynch's Avatar
 
Join Date: Sep 2005
Location: Maple Valley, WA
Posts: 27
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Liked: 11
Subscribed
bryan.lynch is online now  
post #497 of 520 Old 02-25-2015, 09:17 PM
Member
 
Woodfiend's Avatar
 
Join Date: Mar 2006
Location: Omaha
Posts: 119
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked: 14
Quote:
Originally Posted by jpmst3 View Post
Did anyone happen to model this with the LMS to see how it compares to Ricci's GHorn?




Or the UM18?






I am curious too....
Woodfiend is offline  
post #498 of 520 Old 02-25-2015, 09:53 PM
Member
 
Join Date: Dec 2014
Location: Sacramento Delta
Posts: 153
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 74 Post(s)
Liked: 35
Quote:
Originally Posted by LTD02 View Post
post mortem

a couple of things have had me concerned about how close the actual measurements were to the model.

first, there seemed to be a little more 'chop' in the frequency response than in the model.
second, there seemed to be more "ripples" under 100hz than the model predicted.
third, and of primary concern was the larger drop at the last leg of about 8db or so where the model forecast about 6db or so.
fourth, the low corner seemed lower than the low corner in the model. the target low corner was around 14-15hz and actual ended up around 10hz or so (which is getting into likely signal chain rolloff).

so with all that considered, and after reviewing the layout again, I think what has happened is that with three 180 degree turns, the effective path length has been extended by about 50% relative to the model. this is good news and bad news. it means that with three 180 degree turns, a horn can be shortened by about 33%, which in this case would provide a good deal of space savings. that however is just a theory for the moment.

in order to test the 50% "effective increase in length" hypothesis, I went back to the original hornresp model and increased each leg by 50%. the picture below shows the original target in red and the 50% longer horn in black. the 50% longer horn in black exhibits all four characteristics that were noted above.

as everybody who followed along knows, the construction was a masterpiece, so I don't think any concerns rest there.

the design just missed the mark by coming in with a lower effective tuning than plan.


original hornresp model (red), 50% increase in path lengths (black):




actual measurement with low pass filter in place:






edit: updated initial 25% number to 50%.
Am I missing something? It appears John is not happy with design. Then there is talk about flat packs. I must be confused.
Doradoguy is offline  
post #499 of 520 Old 02-25-2015, 10:45 PM
Advanced Member
 
asarose247's Avatar
 
Join Date: Mar 2010
Location: DIY enabled in SoCal / OC
Posts: 941
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 206 Post(s)
Liked: 98
at around 5 sheets, a flat pack must be tongue-in-cheek, that's already about 300 lbs,
If I thought I could afford to have someone ship me something like that so I could AIY, oh h3ll no.
that's a problem that goes away by writing a check ,
and if I could afford that, my custom designed/engineered and built HT isn't going to be full of gigantic boxes
even your local Cineplex doesn't look like that
But if you want to visit garden grove for a week or 2 and bring a truck and other requisite goodies ($) and don't mind a little focused effort
there's no limit

DIY FAN Denon X5200 , Emotiva UPA7, for 7.3.4 ATMOS/DSU SHARP 80" LED/LCD
FL/FR: DIYSG Fusion 15's , Center: DIYSG 88 Special , SL/SR: RC3II , SRL/SRR: F-3Towers, TF & TR: SLX
2 30" BF THTLP'S , SUBMAXIMUS, 2 x Inuke6000DSP & 2 driverless LHORN cabs
http://www.avsforum.com/forum/401-di...rs-subwoofers/
www.avsforum.com/forum/155-diy-speakers-subs/1485120-submaximus-large-front-loaded-horn
asarose247 is online now  
post #500 of 520 Old 02-26-2015, 05:34 AM
AVS Addicted Member
 
Mfusick's Avatar
 
Join Date: Aug 2002
Location: Western MA
Posts: 27,134
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 364 Post(s)
Liked: 1500
People that build folded horns don't need flat packs.

If you need a flat pack build a sealed or ported beginner box.
tsloms likes this.
Mfusick is online now  
post #501 of 520 Old 02-26-2015, 07:23 AM
AVS Special Member
 
vitod's Avatar
 
Join Date: Dec 2003
Posts: 3,240
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 39 Post(s)
Liked: 26
Quote:
Originally Posted by Mfusick View Post
People that build folded horns don't need flat packs.

If you need a flat pack build a sealed or ported beginner box.
Anything is possible. Erich offered a flat pack horn. Sure, it was small...I have two of them, but not impossible. It doesn't have to be this design. It'll be big, but more manageable. Erich asked if we have something in mind, so why not throw him a line about a larger horn? And made mostly of plywood to keep weight down? If a larger flat pack horn can be made with great output, I'm sure it'll be a hit. Most of us are not woodworkers and/or don't have the time to make such a thing. Sure, we can find a wood shop and be lucky enough to have a CNC, but what are the odds of having that AND near by? But, if something like this would emerge, I'd be first in line.

Panasonic AE-2000, Carada BW 120"
Paradigm Studio 40v3 x 2, Paradigm 690 v4, Paradigm ADP 470v3 x 4
Mach 5 IXL-18 build http://www.hometheatershack.com/foru...sub-build.html, Soundsplinter RPL-15 in 9cuft vented x 2, Peavey Low Rider 18 in 3cuft sealed x 3 (nearfield) Integra 80.2, Emotiva XPA-3, UPA-5, 3 x EP2500
vitod is offline  
post #502 of 520 Old 02-26-2015, 08:20 AM
AVS Addicted Member
 
Mfusick's Avatar
 
Join Date: Aug 2002
Location: Western MA
Posts: 27,134
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 364 Post(s)
Liked: 1500
Well if erich was going to offer a kit I think it would make sense to offer something like the lilwrecker, or a dual alpine 12" like a DTS10. Josh Ricci is an engineer or something to that effect, so his designs probably could translate into a CNC cut easily enough- and those also kick ass. I think the kit is more dependent on the designer, and his willingness to allow it. Past that it logistics of getting the wood cut, storing it, shipping it. It's a big job when you start talking about large horns, the size to store it, weight to move it, cost to cut it, and cost to ship it goes through the roof. And building and assembly is more involved, bracing is more important. It's not a beginner job.

The task of doing flat packs for horns seems like pain to me. I would not want do it for free, and I assume normal people would be the same way.
That is probably why we don't see them.

Oh.. and the patent thing.

-

"Too much is almost enough. Anything in life worth doing is worth overdoing. Moderation is for cowards."
Mfusick is online now  
post #503 of 520 Old 02-27-2015, 06:31 AM
AVS Special Member
 
klipsch's Avatar
 
Join Date: May 2003
Location: PA
Posts: 1,227
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 141 Post(s)
Liked: 51
Ironically Erich stopped the Anarchy horn design because he was losing money on the shipping...and that is a very very small horn for a 6.5" driver

The DTS-10 were kits from Danley. How much was shipping and such for those? I would imagine the work for Erich to do for a horn that had a 10" driver would be extremely difficult.

I personally just had 3 sealed subs created at a local CNC. I made the designs myself in sketchup and had those components cut via the CNC. I can do the work with a router and table saw, but instead of taking several days of measuring, cutting, gluing, sanding, dry fitting, etc., I spent about 4 hours total to go to a lumber yard, put the 6 sheets of plywood on a machine and watch it cut the sheets. I then had the 3 boxes assembled back at my house that same day.

Where there is a will, there is a way ... that is all part of the DIY spirit in my opinion.
LTD02 and asarose247 like this.
klipsch is offline  
post #504 of 520 Old 03-25-2015, 08:52 PM
AVS Club Gold
 
Clarence's Avatar
 
Join Date: Oct 2003
Location: No. Virginia Projector: JVC RS56
Posts: 8,962
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 49 Post(s)
Liked: 42
Quote:
Originally Posted by klipsch View Post
I personally just had 3 sealed subs created at a local CNC. I made the designs myself in sketchup and had those components cut via the CNC. I can do the work with a router and table saw, but instead of taking several days of measuring, cutting, gluing, sanding, dry fitting, etc., I spent about 4 hours total to go to a lumber yard, put the 6 sheets of plywood on a machine and watch it cut the sheets. I then had the 3 boxes assembled back at my house that same day.
Very interesting. I did some googling and found a CNC shop near me. They even list speaker cabinets in a list of products that they cut. Plywood and MDF (and dozens of other materials)... provide your own or they can source it. Up to 60" x 144". Sweet.

I'll call them tomorrow and get a quote... just to see if it's feasible (e.g., $100 not $1000).

Can you share how much they charged to cut 6 sheets?
Did you export from sketchup or just give the SKP file to the CNC shop and they did all the file conversions?
Clarence is online now  
post #505 of 520 Old 03-25-2015, 09:28 PM
AVS Special Member
 
popalock's Avatar
 
Join Date: Jul 2009
Location: Doha, Qatar
Posts: 4,393
Mentioned: 73 Post(s)
Tagged: 0 Thread(s)
Quoted: 911 Post(s)
Liked: 1217
Send a message via Skype™ to popalock
Quote:
Originally Posted by Clarence View Post
Very interesting. I did some googling and found a CNC shop near me. They even list speaker cabinets in a list of products that they cut. Plywood and MDF (and dozens of other materials)... provide your own or they can source it. Up to 60" x 144". Sweet.

I'll call them tomorrow and get a quote... just to see if it's feasible (e.g., $100 not $1000).

Can you share how much they charged to cut 6 sheets?
Did you export from sketchup or just give the SKP file to the CNC shop and they did all the file conversions?
You are in NoVa? Where is this shop that you speak of???
popalock is offline  
post #506 of 520 Old 03-26-2015, 08:55 AM
Advanced Member
 
JohnDean's Avatar
 
Join Date: Jul 2012
Location: Franklin, TN
Posts: 725
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 192 Post(s)
Liked: 94
DXF or DWG has been the preferred file type from my experience with CNC. However they can probably convert most types to whatever format their machine requires.
JohnDean is offline  
post #507 of 520 Old 03-27-2015, 09:12 AM
Member
 
MDST's Avatar
 
Join Date: Mar 2014
Posts: 75
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 32 Post(s)
Liked: 20
John, this awesome design serves for Alpine 1522D??
MDST is offline  
post #508 of 520 Old 03-27-2015, 09:42 AM
Advanced Member
 
asarose247's Avatar
 
Join Date: Mar 2010
Location: DIY enabled in SoCal / OC
Posts: 941
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 206 Post(s)
Liked: 98
^ there is no mention of this in 18" size and is recommended in vented or sealed config
buy it may be an interesting unit for modeling something "new"

DIY FAN Denon X5200 , Emotiva UPA7, for 7.3.4 ATMOS/DSU SHARP 80" LED/LCD
FL/FR: DIYSG Fusion 15's , Center: DIYSG 88 Special , SL/SR: RC3II , SRL/SRR: F-3Towers, TF & TR: SLX
2 30" BF THTLP'S , SUBMAXIMUS, 2 x Inuke6000DSP & 2 driverless LHORN cabs
http://www.avsforum.com/forum/401-di...rs-subwoofers/
www.avsforum.com/forum/155-diy-speakers-subs/1485120-submaximus-large-front-loaded-horn
asarose247 is online now  
post #509 of 520 Old 03-28-2015, 07:31 AM
AVS Special Member
 
klipsch's Avatar
 
Join Date: May 2003
Location: PA
Posts: 1,227
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 141 Post(s)
Liked: 51
Quote:
Originally Posted by Clarence View Post
Very interesting. I did some googling and found a CNC shop near me. They even list speaker cabinets in a list of products that they cut. Plywood and MDF (and dozens of other materials)... provide your own or they can source it. Up to 60" x 144". Sweet.

I'll call them tomorrow and get a quote... just to see if it's feasible (e.g., $100 not $1000).

Can you share how much they charged to cut 6 sheets?
Did you export from sketchup or just give the SKP file to the CNC shop and they did all the file conversions?
The "they" is a fellow AVS member. I won't post prices in case he charged me more or less than others. He took the components in the sketchup files and translated then from 3d to 2.5d g code. I had two boxes that were DO designs and one box dual front firing design. DO design worked out great. Front firing needed a little work. All in all, a very good experience. When the bass itch strikes again, I'll prolly ask him if he'll do some more of the DO design for behind the screen
klipsch is offline  
post #510 of 520 Old 03-28-2015, 07:32 AM
AVS Special Member
 
klipsch's Avatar
 
Join Date: May 2003
Location: PA
Posts: 1,227
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 141 Post(s)
Liked: 51
Quote:
Originally Posted by popalock View Post
You are in NoVa? Where is this shop that you speak of???
I'm 30 miles from the ape man... In PA
klipsch is offline  
Sponsored Links
Advertisement
 
Reply DIY Speakers and Subs



Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off