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Multi-Way Conventional loudspeakers with crossovers

Dayton RS180-8 & Vifa XT25, what would you do?
Dayton RS180-8 & Vifa XT25, what would you do?
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Old 20th January 2020, 05:05 PM   #1
Mayday is offline Mayday  Sweden
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Dayton RS180-8 & Vifa XT25, what would you do?
Default Dayton RS180-8 & Vifa XT25, what would you do?

As the title says really.
I've got a pair of Dayton RS180-8 7" and I have a pair of XT25 on the way.

What type of speakers would you build with those?

I don't mind floorstanding speakers as long as they aren't huge.

I've been trying to learn speaker design software during the day, but I would prefer not reinventing the wheel if there already are good designs with these drivers out there.

And I have spent the better part of 2 years or so getting decent at KiCad and PCB design. Unless necessary, I'd like to avoid learning another set of software's that I'll use for most likely this one project.

I have one pair of each so a dual 7" 2.5-way or similar is out.
Grateful for any and all help and advice.
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Old 20th January 2020, 07:06 PM   #2
knifeinthesink is offline knifeinthesink  Canada
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have you looked at this Zaph|Audio. Also on that site is a discussion of the filter design for the xt25 with a scanspeak woofer for the zd5 speaker.

There is extensive discussion of the rs180 at htguide although i don't recall what threads. You might look for Jon Marsh's write up of the modula mtm and the Nat P mtm. I think the most significant issue with the rs180 is the resonant peak around 6.5k which will be audible without a steep xo slope and a tweeter that can cross over low.
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Old 20th January 2020, 07:19 PM   #3
system7 is offline system7  United Kingdom
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One of our regulars is Michael Chua, who seems to have done quite a few Dayton RS-180s projects. This is the shielded version, but can't be much different:

Raven – Dayton RS-180s with Peerless XT25TG30-04 – AmpsLab

There are two versions of the XT25. The double-magnet and louder 60 is considered better than the 30.

Click the image to open in full size.

Michael will send you a schematic if you PM him. I would think the box is a moveable feast.
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Old 20th January 2020, 07:33 PM   #4
Mayday is offline Mayday  Sweden
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Dayton RS180-8 & Vifa XT25, what would you do?
It's the shielded version I own. Thanks for the tips,to everyone who's answered thus far.
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Old 20th January 2020, 07:37 PM   #5
wolf_teeth is offline wolf_teeth  United States
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Forbidden-RS180 Vifa XT25 build thread -

Techtalk Speaker Building, Audio, Video Discussion Forum


Have look here^^^!
Wolf
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Old 20th January 2020, 07:53 PM   #6
Mayday is offline Mayday  Sweden
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Dayton RS180-8 & Vifa XT25, what would you do?
Alot of inspiration so far, I like it.
I have both a dcx2496 and a freedsp so I can play with different xovers etc.
I don't use any of them daily, I prefer to go passive filter if possible as less stuff out is a good thing when you have a 3yo.
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Old 21st January 2020, 01:16 PM   #7
TMM is offline TMM  Australia
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I would get an RS52AN-8 and make a 3-way because the RS180 and XT25 have distortion problems between 800Hz and 2kHz. I like both of those drivers, just not together in a 2-way.

Quote:
Originally Posted by system7 View Post
There are two versions of the XT25. The double-magnet and louder 60 is considered better than the 30.
There are some misguided opinions about this. The sensitivity of the BG60 is higher and the Qts is lower when compared to the TG30, otherwise they are identical. When measured without correcting for the difference in sensitivity or roll-off at the low end due to difference in Q, one or the other can appear to perform better. This is not the case. Once you correct for the slight difference in sensitivity and hit the same target slope with a crossover, they perform basically identically. If I weren't following an existing crossover design, I'd just buy whichever one is cheaper.

Last edited by TMM; 21st January 2020 at 01:35 PM.
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Old 21st January 2020, 01:22 PM   #8
Pida is offline Pida  Czech Republic
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+1.
Definitely add midrange.
As RS52 faceplate is quite large, cut midrange or tweeter faceplates to get them closer.

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I would get an RS52AN-8 and make a 3-way because the RS180 and XT25 have distortion problems between 800Hz and 2kHz.
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Old 21st January 2020, 02:18 PM   #9
picowallspeaker is offline picowallspeaker  Italy
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Other than the classic WMT configuration

WTM
Or better
MTW with woofer on top ( TMW to try )

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Old 21st January 2020, 02:21 PM   #10
picowallspeaker is offline picowallspeaker  Italy
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Best is to have: woofer in a separate box ( or whatever) suspended with rubber band from the ceiling
Mid in open air ( back is "suppressed") suspended with rubber band attached to woofer enclosure.
Same for tweeter
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