Speakerplans.com Homepage
Forum Home Forum Home > General > Newbie Discussion
  New Posts New Posts RSS Feed - Line Array Waveguides
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Line Array Waveguides

 Post Reply Post Reply
Author
Message
LeGingy View Drop Down
New Member
New Member
Avatar

Joined: 23 January 2021
Location: Chelmsford
Status: Offline
Points: 5
Post Options Post Options   Thanks (0) Thanks(0)   Quote LeGingy Quote  Post ReplyReply Direct Link To This Post Topic: Line Array Waveguides
    Posted: 23 February 2021 at 1:14am
Hi everyone

Looking for some advise/education on waveguides

When you go searching online for waveguides (considering to make/experiment with a few line array boxes), they all seem to look like they're not cabable of the advertised 90, 100, 140 degree horizontal dispersion (hyperlink below to show what i'm refering to)

https://www.eminence.com/speakers/hornflare-detail/?model=LA-WG10

Is this only half of the final product??, so waveguide THEN 100 degree Horiz horn????
Or do you incorperate it into the actual box???

Thanks in advance for any advise
Back to Top
Elliot Thompson View Drop Down
Old Croc
Old Croc
Avatar

Joined: 02 April 2004
Location: United States
Status: Offline
Points: 5172
Post Options Post Options   Thanks (0) Thanks(0)   Quote Elliot Thompson Quote  Post ReplyReply Direct Link To This Post Posted: 23 February 2021 at 10:24am
Hi.

If you contact Eminence, they will send you the Polar Response.

Best Regards, 
Elliot Thompson
Back to Top
toastyghost View Drop Down
The 10,000 Points Club
The 10,000 Points Club
Avatar

Joined: 09 January 2007
Location: Manchester
Status: Offline
Points: 10920
Post Options Post Options   Thanks (0) Thanks(0)   Quote toastyghost Quote  Post ReplyReply Direct Link To This Post Posted: 23 February 2021 at 6:42pm
Short answer: yes. Adding depth to the horn with the a smoother transitioning flare will improve directivity.

Here’s an example of a similar horn with directivity plots:
https://en.toutlehautparleur.com/media/catalog/product/datasheet/sica/Q07050A.pdf

Long answer: many line array systems only offer their stated horizontal coverage angle from ~2 kHz to 10 kHz. That includes VDOSC. Download the manufacturer GLL data for some of the boxes you’re familiar with and have a look at the horizontal isobars in the free AFMG GLL Viewer program. The horn you’re looking at and the equivalents are designed to handle the path length compensation part of the design, which is explained in the original papers by L’Acoustics’ Christian Heil with some lovely diagrams.

Not all horns are equal in how they do this, even at big name brands.

Edited by toastyghost - 23 February 2021 at 6:44pm
Back to Top
 Post Reply Post Reply

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.06
Copyright ©2001-2023 Web Wiz Ltd.

This page was generated in 0.125 seconds.