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Multi-Way Conventional loudspeakers with crossovers

Limmer 488 Horn
Limmer 488 Horn
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Old 1st October 2017, 02:33 PM   #1
Pano is offline Pano  United States
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Limmer 488 Horn
Default Limmer 488 Horn

Here's an odd looking horn that I saw while watching a video about D&B line arrays. It's the Limmer 488. Looking at it I'd think "Hows that going to work?" but D&B is world renowned for the quality of their sound and their engineering - so maybe it's a good design.
dbaudio.com | d&b audiotechnik

The horn isn't on the Limmer website (that I can find) so no specs. AFAIK it's a 1.4" throat horn. Limmer isn't well known, but does get some mentions here in diyAudio. Are they supplying this horn to D&D Audiotechnic? It looks like a multi-cell, or perhaps a true segmented horn.
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File Type: jpg Limmer1.jpg (66.9 KB, 169 views)
File Type: jpg limmer2.jpg (100.9 KB, 166 views)
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Old 1st October 2017, 02:55 PM   #2
lisoformio is offline lisoformio  Italy
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line array waveguide - Cerca con Google
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Old 1st October 2017, 03:40 PM   #3
Pano is offline Pano  United States
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Limmer 488 Horn
Thanks! Some very interesting designs there.
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Old 2nd October 2017, 08:56 AM   #4
phase_accurate is offline phase_accurate
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Talking of line-array waveguides: On a Canadian website I once saw someone suggesting to use a small line-array waveguide for the coupling of a driver to a DIY wooden horn. I wonder how well that would work.

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Old 2nd October 2017, 05:14 PM   #5
Pano is offline Pano  United States
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Limmer 488 Horn
Some of these manifold designs look well engineered and should help with beaming at the top end. I've been a fan of the multi-cell horns for years, these are a modern take on that.

What intrigues me about the Limmer horn is how quickly the spit happens, how severe the angle coming right off the driver.
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