Dueling lowarhorn build - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 110 Old 02-22-2015, 11:08 AM - Thread Starter
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Dueling lowarhorn build

First,
Thanks to Ricci , LTD02 and jpmst3 (I know what you did last summer . . .)
\
I cut ply a week ago Saturday, started building on Monday, made some good progress


here is the link


http://s1083.photobucket.com/user/as...?sort=3&page=1


let me know if it works


all the usual appreciated


(would really be that hard to allow pics up to a 2.5 mp limit)
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SUBMAXIMUS, ,Submaximus V3,LOWARHORNCustom Dual Driver VBSS,2 x 6000DSP
www.avsforum.com/forum/155-diy-speakers-subs/1485120-submaximus-large-front-loaded-horn
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post #2 of 110 Old 02-22-2015, 11:32 AM
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subscribed... I'm really interested to see how it works out. I really like the simplicity of the Lowarhorn and the dimensions of the build fit my needs better than the traditional Gjallerhorn, but I'm still a slight bit hesitant since only one person has built one so far. Looking forward to your results (and the supposed insanity of it )
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post #3 of 110 Old 02-22-2015, 11:54 AM - Thread Starter
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Another member provided me the Ghorn 2.0 plans . . .
compared to the "simplicity" of the Lhorn, it was almost a no brainer
I don't mind working a good plan but . . .
and the form factor allows some more flexibility wrt to placement, etc. . .
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DIY FAN Denon X5200 , ATI A 2000 for 7.4.6 SCATMOS/DSU Sammy 82" 4K/HDR
L/R: Fusion 15 V2 , C: 88 Special , SL/SR: 88 Special(V2) , RL/RR: F-3, TF/TR: Volt 6's TM: SLX, FH: F4Q4
SUBMAXIMUS, ,Submaximus V3,LOWARHORNCustom Dual Driver VBSS,2 x 6000DSP
www.avsforum.com/forum/155-diy-speakers-subs/1485120-submaximus-large-front-loaded-horn
http://www.avsforum.com/forum/155-di...orn-build.html
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post #4 of 110 Old 02-22-2015, 11:57 AM
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Quote:
Originally Posted by asarose247 View Post
Another member provided me the Ghorn 2.0 plans . . .
compared to the "simplicity" of the Lhorn, it was almost a no brainer
I don't mind working a good plan but . . .
and the form factor allows some more flexibility wrt to placement, etc. . .
oh yeah, the simplicity and form factor of the Lowarhorn is insane. my ONLY qualm to this over the Gjallerhorn is because Ricci as VERY painstakingly tested the Ghorn to death while this one is a relatively untested build... that's all. the OCD portion of me worries that there is some flaw or untested piece in the build that would cause a hiccup and burn out a driver or something.
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post #5 of 110 Old 02-22-2015, 12:09 PM
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test post
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post #6 of 110 Old 02-22-2015, 12:11 PM
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looks like in windows, all the pics can be "drag and dropped" at once into the area below the post editor.

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post #7 of 110 Old 02-22-2015, 12:17 PM
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Quote:
Originally Posted by wormraper View Post
oh yeah, the simplicity and form factor of the Lowarhorn is insane. my ONLY qualm to this over the Gjallerhorn is because Ricci as VERY painstakingly tested the Ghorn to death while this one is a relatively untested build... that's all. the OCD portion of me worries that there is some flaw or untested piece in the build that would cause a hiccup and burn out a driver or something.

the spacing in front of the driver is the key measurement. that MUST be done as close to perfect as possible. most of the other measurements/panels/etc. all have a little play that won't affect anything materially. the panel in front of the driver sets the "compression ratio" and if it is too high, then the risk of damage to the driver is real. the LOWARHORN and the GJALLARHORN should be identical in this dimension.


we don't know if the uxl will hold up like the lms in the gjallarhorn/lowarhorn (i.e. if the driver's soft parts and even the cone itself are rugged enough for long term use). that is one unknown. another unknown is if the t/s specs on the uxl are close enough not to impact response materially. we think they are, but until one is built and measured, it is an unknown. these are some risks that must be taken when pushing the boundaries of performance to new levels.
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post #8 of 110 Old 02-22-2015, 12:54 PM
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Quote:
Originally Posted by LTD02 View Post
we don't know if the uxl will hold up like the lms in the gjallarhorn/lowarhorn (i.e. if the driver's soft parts and even the cone itself are rugged enough for long term use). that is one unknown. another unknown is if the t/s specs on the uxl are close enough not to impact response materially. we think they are, but until one is built and measured, it is an unknown. these are some risks that must be taken when pushing the boundaries of performance to new levels.
oh really? I had been under the impression that the UXL held up as good, it just wasn't as powerful in there. IC.. thanks for the info, that makes my decision a bit easier. Too bad the LMS 5400 went out of stock.. that was one helluva driver

Last edited by wormraper; 02-22-2015 at 01:12 PM.
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post #9 of 110 Old 02-22-2015, 01:11 PM
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the only monster horn that I am aware of that employs the uxl is asarose's Submaximus and the compression ratio on that one is just slightly less than the gjallarhorn/lowarhorn. the uxl has apparently held up just fine, even under tremendous output. it should be ok, but i just wanted folks to have as many facts as possible going in...

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post #10 of 110 Old 02-22-2015, 01:13 PM
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Quote:
Originally Posted by LTD02 View Post
the only monster horn that I am aware of that employs the uxl is asarose's Submaximus and the compression ratio on that one is just slightly less than the gjallarhorn/lowarhorn. the uxl has apparently held up just fine, even under tremendous output. it should be ok, but i just wanted folks to have as many facts as possible going in...
understood... facts are always good. I suppose with 2 of them like I was thinking there would be less stress on the driver since we wouldn't be driving them as hard...

the submaximus is another beast that comes REALLY close to these two, and would be real tempting since it's MADE for the UXL...almost as easy too...and I assume it's more in line with the UXL's capabilities being that it was made for it
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post #11 of 110 Old 02-22-2015, 01:30 PM
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i wasn't completely happy with the performance of that one...the very bottom end dropped a little more than i was hoping and the measured response indicated that it didn't have to be quite as long to hit the performance target. i'm too hard on it because i was central to its design--folks who have experienced it walk away in awe. I'd give it a little larger mouth and a little shorter horn path in the next version, but I'm not sure if there will be a next version of that one. iirc maxmercy built a giant front loaded horn way back in the day and ran into a similar issue.

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post #12 of 110 Old 02-22-2015, 01:32 PM
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post #13 of 110 Old 02-22-2015, 01:34 PM
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Quote:
Originally Posted by LTD02 View Post
i wasn't completely happy with the performance of that one...the very bottom end dropped a little more than i was hoping and the measured response indicated that it didn't have to be quite as long to hit the performance target. i'm too hard on it because i was central to its design--folks who have experienced it walk away in awe. I'd give it a little larger mouth and a little shorter horn path in the next version, but I'm not sure if there will be a next version of that one. iirc maxmercy built a giant front loaded horn way back in the day and ran into a similar issue.
lol, the fun of being a creator. it's never done, know that feeling well. and holy crap. I remember Maxmercy's build of that monster back in the day. I miss that dude, he was a sarcastic SOB but he knew his subs
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post #14 of 110 Old 02-22-2015, 01:42 PM
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What's the cuft of this monster ? What spl at tuning ?
Nice thread 💪
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Good Progress asarose247, any possibility of a cut sheet?
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post #16 of 110 Old 02-22-2015, 01:57 PM
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What's the cuft of this monster ? What spl at tuning ?
Nice thread 💪
Joe's LOWARHORN build
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post #17 of 110 Old 02-22-2015, 02:35 PM - Thread Starter
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Cut sheets


The LOWARHORN (all CAPS mandatory ?) thread by jpmst3 has all the good news you need . . . .
I've kreg screwed some pieces to make some of the internal panels because there IS a lot of extra wood, so I'm using just 8 sheets


2 sheets is about $90, so it kinda pays for my inuke fans upgrade and my 12v. SSR relay for the 2 inukes
and I figure about 3 tubes of PL

DIY FAN Denon X5200 , ATI A 2000 for 7.4.6 SCATMOS/DSU Sammy 82" 4K/HDR
L/R: Fusion 15 V2 , C: 88 Special , SL/SR: 88 Special(V2) , RL/RR: F-3, TF/TR: Volt 6's TM: SLX, FH: F4Q4
SUBMAXIMUS, ,Submaximus V3,LOWARHORNCustom Dual Driver VBSS,2 x 6000DSP
www.avsforum.com/forum/155-diy-speakers-subs/1485120-submaximus-large-front-loaded-horn
http://www.avsforum.com/forum/155-di...orn-build.html
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post #18 of 110 Old 02-22-2015, 02:40 PM
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Quote:
Originally Posted by asarose247 View Post
Cut sheets


The LOWARHORN (all CAPS mandatory ?) thread by jpmst3 has all the good news you need . . . .
I've kreg screwed some pieces to make some of the internal panels because there IS a lot of extra wood, so I'm using just 8 sheets


2 sheets is about $90, so it kinda pays for my inuke fans upgrade and my 12v. SSR relay for the 2 inukes
and I figure about 3 tubes of PL
what wood are you using?
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post #19 of 110 Old 02-22-2015, 02:46 PM - Thread Starter
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^ home depot Sanderply , .709, sheets

DIY FAN Denon X5200 , ATI A 2000 for 7.4.6 SCATMOS/DSU Sammy 82" 4K/HDR
L/R: Fusion 15 V2 , C: 88 Special , SL/SR: 88 Special(V2) , RL/RR: F-3, TF/TR: Volt 6's TM: SLX, FH: F4Q4
SUBMAXIMUS, ,Submaximus V3,LOWARHORNCustom Dual Driver VBSS,2 x 6000DSP
www.avsforum.com/forum/155-diy-speakers-subs/1485120-submaximus-large-front-loaded-horn
http://www.avsforum.com/forum/155-di...orn-build.html
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post #20 of 110 Old 02-22-2015, 02:52 PM
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Quote:
Originally Posted by asarose247 View Post
^ home depot Sanderply , .709, sheets
ahhh, this stuff???

http://www.homedepot.com/p/Unbranded...0?N=5yc1vZc7r1
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post #21 of 110 Old 02-22-2015, 03:09 PM - Thread Starter
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^
yes

DIY FAN Denon X5200 , ATI A 2000 for 7.4.6 SCATMOS/DSU Sammy 82" 4K/HDR
L/R: Fusion 15 V2 , C: 88 Special , SL/SR: 88 Special(V2) , RL/RR: F-3, TF/TR: Volt 6's TM: SLX, FH: F4Q4
SUBMAXIMUS, ,Submaximus V3,LOWARHORNCustom Dual Driver VBSS,2 x 6000DSP
www.avsforum.com/forum/155-diy-speakers-subs/1485120-submaximus-large-front-loaded-horn
http://www.avsforum.com/forum/155-di...orn-build.html
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post #22 of 110 Old 02-22-2015, 06:46 PM
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Hi Will ( asarose )

I just saw this thread for the first time tonight. I've been busy with work ( Atlanta last week, and knoxville, before that ).

Anyhow, just wanted to let you know that these are looking awesome thus far, and that I'm looking forward to hearing them once they are setup.

Are both going in your main theater room?
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post #23 of 110 Old 02-22-2015, 07:02 PM
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DANGER. DANGER.


The bracing in red will likely contact the driver at high excursion.


Joe's bracing in blue is the way that it should be done--the bracing should end just before the driver.




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post #24 of 110 Old 02-22-2015, 07:59 PM - Thread Starter
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That brace will be modded it's just a dry fit in that picture center portion will like be eliminated in deference to 2 short blocks about 1/2 outside of mounting diameter I want a driver so I can get the mounting holes set, then set the bracing so no interference
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post #25 of 110 Old 02-22-2015, 08:15 PM - Thread Starter
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I still hate tapered bracing. Can't wait to try some DIYSG flat packs ... 88 speciaslly perhaps
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post #26 of 110 Old 02-23-2015, 01:27 PM - Thread Starter
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for anyone that might build this
my (questionable) level of ability makes me have to be very patient . . .
until the drivers show up. the best I and maybe you can do it approach the project as a DIY flat pack,
take the time to be ready
dry fit and pre-assemble or be ready to assemble panels and bracing with all the blocking, spacers , pre-drilled bracing, clamps etc.
once you have the drivers and have that part of the install done,
should be rather straight forward

DIY FAN Denon X5200 , ATI A 2000 for 7.4.6 SCATMOS/DSU Sammy 82" 4K/HDR
L/R: Fusion 15 V2 , C: 88 Special , SL/SR: 88 Special(V2) , RL/RR: F-3, TF/TR: Volt 6's TM: SLX, FH: F4Q4
SUBMAXIMUS, ,Submaximus V3,LOWARHORNCustom Dual Driver VBSS,2 x 6000DSP
www.avsforum.com/forum/155-diy-speakers-subs/1485120-submaximus-large-front-loaded-horn
http://www.avsforum.com/forum/155-di...orn-build.html
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post #27 of 110 Old 02-23-2015, 02:37 PM
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Awesome man!

I am a little late to the party and missed this thread.

I don't think you have anything to worry about with the UXL driver(s). You likely won't be pushing them to their limits anyway. All you need is a HPF and they will take copious power and yield insane SPLs.

Nice job thus far! I cannot wait until you get these monsters fired up!

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post #28 of 110 Old 02-23-2015, 02:45 PM
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Quote:
Originally Posted by wormraper View Post
oh yeah, the simplicity and form factor of the Lowarhorn is insane. my ONLY qualm to this over the Gjallerhorn is because Ricci as VERY painstakingly tested the Ghorn to death while this one is a relatively untested build... that's all. the OCD portion of me worries that there is some flaw or untested piece in the build that would cause a hiccup and burn out a driver or something.
Keep in mind, there is not much that can be screwed up here, OCD or not. For all intents are purposes, this is a GHorn or at least 99%, just with fewer folds.

Plus Ricci never tested the GHorn with the UXL. However, both designs yielded response curves extremely close to the simulations. When you run the sims with the UXL it looks excellent.

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post #29 of 110 Old 02-23-2015, 03:30 PM
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Quote:
Originally Posted by jpmst3 View Post
Keep in mind, there is not much that can be screwed up here, OCD or not. For all intents are purposes, this is a GHorn or at least 99%, just with fewer folds.

Plus Ricci never tested the GHorn with the UXL. However, both designs yielded response curves extremely close to the simulations. When you run the sims with the UXL it looks excellent.
very true, it's looking that way from my calculations.... as LTD mentioned, no one knows how the UXL will hold up over time with the soft parts etc, for all we know it may disentigrate, but I'm thinking that using 2 of them like I want should allow them to NOT be pushed very hard and relieve some of the pressure than say if I was using just one. (I mean, why go half a$$ed and just build one )
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post #30 of 110 Old 02-23-2015, 03:57 PM - Thread Starter
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^
+1


(='s 2!)


wisely played, Sir . . .

DIY FAN Denon X5200 , ATI A 2000 for 7.4.6 SCATMOS/DSU Sammy 82" 4K/HDR
L/R: Fusion 15 V2 , C: 88 Special , SL/SR: 88 Special(V2) , RL/RR: F-3, TF/TR: Volt 6's TM: SLX, FH: F4Q4
SUBMAXIMUS, ,Submaximus V3,LOWARHORNCustom Dual Driver VBSS,2 x 6000DSP
www.avsforum.com/forum/155-diy-speakers-subs/1485120-submaximus-large-front-loaded-horn
http://www.avsforum.com/forum/155-di...orn-build.html
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