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Multi-Way Conventional loudspeakers with crossovers

New waveguided tweeter from SB Acoustics
New waveguided tweeter from SB Acoustics
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Old 13th September 2019, 04:21 PM   #1
celef is offline celef
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Default New waveguided tweeter from SB Acoustics

Sb26stwgc-4
SB Acoustics :: SB26STWGC-4
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Old 14th September 2019, 01:29 AM   #2
mayhem13 is offline mayhem13  United States
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Looks awesome out to 30 degrees up to 15khz.
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Old 14th September 2019, 08:56 PM   #3
Patrick Bateman is offline Patrick Bateman  United States
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That dip in the high frequency response is why I use 3/4" domes on my waveguides. I haven't found a way to reliably avoid it. I've tried phase plugs, to no avail.

Ring radiators avoid it, but ring radiators have less displacement than domes. (Because a ring has less area than a circle.)
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Old 14th September 2019, 09:19 PM   #4
Juhazi is online now Juhazi  Finland
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What mid to mate with - a 4"er @3kHz? Same problem with SEAS DXT
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Old 14th September 2019, 10:44 PM   #5
YSDR is offline YSDR  Hungary
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Don't the manufacturers dare to make a really good waveguide+tweeter combo? That's why we got a standard 104mm flange tweeter with a "mini" waveguide?
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Old 14th September 2019, 10:52 PM   #6
Patrick Bateman is offline Patrick Bateman  United States
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I'd argue that it was people like Geddes and Danley who introduced the idea of using waveguides into the home audio market.

I can distinctly remember the 90s, when any "hifi" company who dared to use a waveguide or horn was basically laughed out of the industry.

Horns and waveguides were commonplace in the pro and studio market, but they never really made any headway in the "hifi" community until the 21st century.

In a nutshell, we're not seeing a lot of hifi tweeters with waveguides because their use has only been accepted recently.

I was a fan of horns, going all the way back to the 90s, because they were commonplace in car audio.
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Old 15th September 2019, 12:48 AM   #7
ScottG is offline ScottG  United States
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-not much of a waveguide.. and there have been commercial designs like this over time. ex. Infinity's Prelude and most of Triangle's line.

I think it's as much an aesthetic-thing as anything else.. people expect their tweeter to provide a smaller diameter on the baffle: so the diameter is small.

-go larger and you start having to cut-into the waveguide to get closer "source-to-source" placement.

I *think* however that elliptical waveguides (small or large) are a much newer concept commercially (..and arguably at all), and help with getting the source's a bit closer.


..this driver might be interesting in-relation to being placed into a larger waveguide (..in that it might have a freq. response that's more accommodating to this). ..and the "ST" range is one of those rare tweeter's that provide excellent detail (..so long as spl isn't to high).
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Old 15th September 2019, 02:17 AM   #8
norman bates is offline norman bates  United States
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Yea, that dome is hardly horn loading.

Now the morel cat378 does, sounds awesome, but limited dispersion is limited.
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Old 15th September 2019, 09:14 AM   #9
ODougbo is offline ODougbo  United States
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I'm using Wavecor TW030WA11-01 in the home theater; very nice tweeters.
Easy listening.
Apparently Wavecor thinks so also, the price jumped up $25 from last year.

Wavecor TW030WA11 30mm Semi Horn Loaded Textile Dome Tweeter with Rear Chamber 4 Ohm
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Old 15th September 2019, 11:18 AM   #10
Ultima Thule is offline Ultima Thule  Europe
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Default New SB Acoustics 4" SB12MNRX2-25-4

Quote:
Originally Posted by Juhazi View Post
What mid to mate with - a 4"er @3kHz? Same problem with SEAS DXT
SB Acoustics may have a plan for that too.

SB Acoustics :: 4" SB12MNRX2-25-4
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File Type: jpg 4%20SB12MNRX2-25-4-graph.jpg (106.6 KB, 510 views)
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File Type: pdf 4in SB12MNRX2-25-4 Prototype rev-1.pdf (801.4 KB, 24 views)
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