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 1 
 on: Today at 10:28:44 pm 
Started by Callan Browne - Last post by Scott Holtzman
Good question.
I removed one handle on the 728 and replaced it with a piece of (black) ply, and mounted a threaded pole mount (like the 718 has).  So I have very short threaded poles on each side.
It works awesome.  I bought the threaded poles on eBay (iDJ seller) and cut them to the length I needed for the perfect height for my tops.
Not setting up Tripods is glorious.

Short poles are a godsend.  We sometimes run one kw-181 under a kw-153 for smaller gigs.  Short poles cut to the same height as a sub keep things consistent.

 2 
 on: Today at 10:22:30 pm 
Started by Riley Casey - Last post by Riley Casey
CNC was the magic search term, thanks.

 3 
 on: Today at 09:29:37 pm 
Started by Victor Estrada - Last post by Paul G. OBrien
Now as for what I got, do you think sticking to the 218 for subs is a good idea? Would getting another one, and another set of SP4s, with 2 SP4s on top of each 218, one on each side of the DJ table, get me a decent bass? Or should I sell it and buy folded horns?
Victor where are you located and what ethnic groups do you cater to?

As for DSP, I found a Peavey VSX 26e for a good price, is that one pretty good? It has USB to customize from computer, and 6 outputs, which seems perfect for highs or monitors, full range, and subs. With a DSP I don't need anything else for sound enhancement/crossover right?
PV never did release software to control this box so maybe think about buying amps with DSP built in or look at a Behringer DCX instead.

Also, for power efficiency, is there such a device that'll help with electricity?
You will need a distro eventually.

My biggest concern as of now is this wedding I have coming up, they said it was 200 people, but the hall is pretty big and the ceilings are really high, and knowing these people, I'm sure a lot more will be there for the dance.
The size of the room doesn't matter unless it is heavily upholstered with carpet and heavy drapes everywhere.. those rooms just soak up the sound. If it's all hard surfaces then it won't take much power at all to make a lot of noise. IMO for 200ppl what you got now is plenty just be sure to get the mains up high over everybodys heads.. don't just prop then up on the subs.


 4 
 on: Today at 09:17:52 pm 
Started by Riley Casey - Last post by Dave Pluke
Pretty sure this has been discussed before but search function isn't cutting it.  Can anyone suggest a custom cabinet shop for building speaker cabs to spec?  Mid Atlantic area would be ideal.

What type and how many cabs are you thinking?

There are a couple of cabinet makers in the Carolinas.  They mostly do guitar amp and speaker cabs, but might be interested in sound reinforcement.

Dave

 5 
 on: Today at 09:12:50 pm 
Started by Riley Casey - Last post by Art Welter
Pretty sure this has been discussed before but search function isn't cutting it.  Can anyone suggest a custom cabinet shop for building speaker cabs to spec?  Mid Atlantic area would be ideal.
Riley,
R&R cases near Chicago builds great boxes.

You might add "CNC" and "woodwork" to your local search terms, there are a number of shops listed in the D.C. area, but I have never worked with any.

Most any kitchen cabinet shop could handle speaker cabinet building if your plans are complete and accurate. Car audio shops may have box builders more familiar with speaker plans and road abuse.

That said, "custom" comes with a price, hard to compete with mass production being done where labor costs are low, unless you find a "DIY" guy looking for a new challenge.

Art


 6 
 on: Today at 09:11:47 pm 
Started by Dave Scarlett - Last post by Bob Leonard
What's the difference between jumping a robot and jumping a shark?

You don't need water ski's to jump a robot.

 7 
 on: Today at 08:48:22 pm 
Started by Callan Browne - Last post by Jay Marr
Hey Jay, do you use tripods both sides ? Or does the 728 have a pole mount?

Sent from my Pixel using Tapatalk

Good question.
I removed one handle on the 728 and replaced it with a piece of (black) ply, and mounted a threaded pole mount (like the 718 has).  So I have very short threaded poles on each side.
It works awesome.  I bought the threaded poles on eBay (iDJ seller) and cut them to the length I needed for the perfect height for my tops.
Not setting up Tripods is glorious.

 8 
 on: Today at 08:29:49 pm 
Started by Riley Casey - Last post by Riley Casey
Pretty sure this has been discussed before but search function isn't cutting it.  Can anyone suggest a custom cabinet shop for building speaker cabs to spec?  Mid Atlantic area would be ideal.

 9 
 on: Today at 08:24:47 pm 
Started by Bill McIntosh - Last post by Bill McIntosh
Thank you guys, between Mike and you, this has become very clear.

Thanks from me too. 

Also I want to clarify that the tour tech did not make a fuss, just showed the meter readings to our electrical contractor.  They discussed, tour tech was happy and the show went as scheduled with no audible issues.

 10 
 on: Today at 07:47:15 pm 
Started by Erik Genthe - Last post by Tim McCulloch
Hi,
this Winter i would like to build a Labhorn. I've got the Eminence Speakers already.

I have found some hornresp data via Google Images (i dont know exactly where i got them from).
The simulation showed a 3,5dB dip at 45hz. So i started experimenting and end up in decr. Throatchamber (Frontchamber?) volume by 10liters and increasing rearchamber volume  by 10 Liters. You can probably archieve this by moving the Driver a bit towards hornthroat... Horn flare would change as well.
After I did this, i found out, that Brian Litz has already done this (Labhorn v3), and that this type of Labhorn has already been built.

Sadly every link to building plans that i have found is down.
Could someone help me getting theese plans please?

I guess theese plans: https://www.prosoundweb.com/channels/live-sound/lsp_documentation_page_drawings_photos_specs_and_more/, don't include Brian Litz improvements.
The measurement (https://www.prosoundweb.com/lsp/response1.gif) shows the same Dip at 45hz.

2nd Question:
Is there Hornresponse input Data for the plans shown on the Documentation page?
Is there Hornresponse input Data for the plans of Brian Litz?
If not, of course i will create the Data by myself and post it here.


Of course i will post Measurements of the finished Horn afterwards. :)

Btw: I archieved some nice Result's in (at least in frequency response) using Passive Radiators. Probably someone with more Knowledge could take a look at theese. (Hornresp records are attached)

Best regards
Erik Genthe

The back story behind the LABhorn is that Tom Danley designed it in response to the price/output/SQ of an expensive horn sub from a T.L.A. company.  The original was intended to be used in multiples so Tom D used the same criteria.  It was his gift to those who'd trade sweat equity and sawdust to receive significant monetary savings.  Also interesting is that Tom designed this solely in simulation and never built a physical unit.

The response evens out as you add more LABhorns together - 4 was the target quantity to get smoothest response.  You can play with the design if you like but I'd suggest building a pair (or more) for each side.  By the time Brian got involved I'd mostly stopped following the topic so I can't comment on his modifications.

I heard 1 LABhorn at Paul Bell's Jan 2007 NYC sub shootout (there is a thread about this in the LAB forum archives) and that unit had a couple of changes but in auditioning it we were kind of surprised that the "FrankenLAB" was still a pretty good sub (it was shorter and lacked the woofer cover plates) and held up pretty well until compared to the top subs in the shootout.

Have fun, good luck.

Tim Mc

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