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Multi-Way Conventional loudspeakers with crossovers

Theory behind Dunlavy and Lipinski speakers?
Theory behind Dunlavy and Lipinski speakers?
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Old 16th September 2019, 02:53 AM   #31
Remlab is offline Remlab  United States
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The power response in the vertical plane is just terrible with mtm configurations. 1st order designs make them even worse. That was a major drawback in Dunlavy designs
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Old 16th September 2019, 03:02 AM   #32
Remlab is offline Remlab  United States
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So, a steep, low crossover point should go a long way toward ameliorating that issue.
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Old 16th September 2019, 03:08 AM   #33
Remlab is offline Remlab  United States
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The great thing about Dunlavy's is the defraction control and physical time alignment
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Old 16th September 2019, 05:36 AM   #34
norman bates is offline norman bates  United States
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Eh.

Those listeners prefer a triangle step response, both drivers moving front and back at the same time.

"Time alignment" phase aligned too.

Even better would be a 6db time aligned coax, now you are a point source too.


Were i not a midbass head, I'd be firmly planted with thiels, dunlavy, or vandersteen.

Or even 8" full range, but i need wider dispersion than a couch at 12'.
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Old 16th September 2019, 02:59 PM   #35
Remlab is offline Remlab  United States
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Currently Iím using KEFs for that exact reason. The coaxials that Krutke tested a while back. The passives are coming out of those too.
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Old 16th September 2019, 03:12 PM   #36
Remlab is offline Remlab  United States
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I bought the Dunlavy’s back in 97 because of their step response. Best sound staging I’ve ever heard from a speaker. The room power response was so bad that I just couldn’t live with them.
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Old 16th September 2019, 03:21 PM   #37
Remlab is offline Remlab  United States
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On the other hand, the KEF coaxials do both well
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Old 16th September 2019, 03:31 PM   #38
Remlab is offline Remlab  United States
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But anyway, I always wanted to see if I could fix the power response on the Dunlavy’s while retaining the phenomenal sound staging abilities.
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Old 16th September 2019, 08:10 PM   #39
xrk971 is offline xrk971  United States
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Theory behind Dunlavy and Lipinski speakers?
As Stereophile review of Dunlavey SC IV said, it’s only one of a handful ever tested to show a perfect step response as provided by a transient perfect speaker. That’s a speaker that has correct time and phase alignment. It reproduces percussion very accurately and has superb imaging.

Regarding the foam/fuzz around the tweeter - it helps smooth diffraction ripples. I don’t think it can act as a waveguide or horn - try making a horn out of porous foam or Scotchbrite pads. Does it work?

Here were some of my experiments with Scotchbrite pads around a tweeter.
FR58EX and AC130F1 micro-FAST / WAW

Click the image to open in full size.

With and without Scotchbrite around tweeter:
Click the image to open in full size.

Step response:
Click the image to open in full size.
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Old 16th September 2019, 10:21 PM   #40
jtgofish is offline jtgofish
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I have owned Sonique Encore speakers which were very much a Duntech type speaker.Sonique was owned by ex Duntech employees.They were very good WMTMW speakers using two Dynaudio D52 dome mids and Dynaudio Esotec tweeters in a felt surrounded stepped baffle arrangement.The felt was attached by velcro so could be removed.In some ways they sounded better without the felt-certainly more "air" and atmospheric sounding and a bit more involvng.The imaging was more pinpoint with the felt in place but was still very good without it.
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