Hi,
About to finally start tinkering and I like the idea of a compact 2.5-way...CamillaDSP (RPi5 & HiFiBerry DAC8x) to create the active crossover and 6 channels of amplification, the parts per speaker:
2 x Wavcor WF168WA02
1 x Vifa NE25VTS-04 tweeter)
1 x Dayton Audio DS270-PR
As compact a cabinet as possible, I don't want floor-standers or anything too bulky.
I can't find much info on how the enclosure would differ, or whether it needs to differ at all, layman's terms would be great!
Thanks
Richard
About to finally start tinkering and I like the idea of a compact 2.5-way...CamillaDSP (RPi5 & HiFiBerry DAC8x) to create the active crossover and 6 channels of amplification, the parts per speaker:
2 x Wavcor WF168WA02
1 x Vifa NE25VTS-04 tweeter)
1 x Dayton Audio DS270-PR
As compact a cabinet as possible, I don't want floor-standers or anything too bulky.
I can't find much info on how the enclosure would differ, or whether it needs to differ at all, layman's terms would be great!
Thanks
Richard
Not video, but this is worth a skim through:
https://sound-au.com/lr-passive.htm
https://sound-au.com/lr-passive.htm
Differ from what, exactly?
The purpose of the 0.5 is as an easy way to manage the baffle step.
https://www.diyaudio.com/community/...overs-without-measurement.189847/post-2587232
Yes, no 
The bass is the dominant force and it's equal between them. They can share.
Internal stuffing should help to keep things clean into the midrange.
MTM plays both woofers all the way to the cross. It's more complicated. I'd suggest you'll have better results first time around, and more fun with the 2.5 way.
The bass is the dominant force and it's equal between them. They can share.Internal stuffing should help to keep things clean into the midrange.
MTM plays both woofers all the way to the cross. It's more complicated. I'd suggest you'll have better results first time around, and more fun with the 2.5 way.
Up to you if you want to use a common volume for the two woofers.
I would suggest using two equal but separate volumes.
If you want clarity in the midrange you need to use separate volumes.
Have done it both ways and don't like the sound with the shared volume but your ears might tell you otherwise.
We had similar discussions here at other threads and many people claim that it's not an issue. For me it is and a big one at that.
One small example from a respected manufacturer is KEF HTC3001 - 3005 centre channel speaker which uses dividers to split the enclosure into 3 separate compartments to great effect.
https://www.lencoheaven.net/forum/index.php?topic=31371.180
Replies # 194 & #222
I would suggest using two equal but separate volumes.
If you want clarity in the midrange you need to use separate volumes.
Have done it both ways and don't like the sound with the shared volume but your ears might tell you otherwise.
We had similar discussions here at other threads and many people claim that it's not an issue. For me it is and a big one at that.
One small example from a respected manufacturer is KEF HTC3001 - 3005 centre channel speaker which uses dividers to split the enclosure into 3 separate compartments to great effect.
https://www.lencoheaven.net/forum/index.php?topic=31371.180
Replies # 194 & #222
Attachments
Last edited:
The woofers that you have selected will perform very well in 20L aperiodic volumes each.
It's not really a compact box but you'll have difficulty fitting them in smaller BR volumes anyway unless you like the sound of a boom box.
Better alternative IMHO will be SB16PFCR25-8 from Wagner Electronics in Sydney:
https://www.wagneronline.com.au/SB-...io-speakers-pa/SB16PFCR25-8-93027/1005910/pd/
As a bonus it is much cheaper - $46.50 vs $75 for the Wavecor.
Both sets of woofs will reach F3 = 40 Hz or F6 = 33 - 35 Hz in those aperiodic volumes.
It's not really a compact box but you'll have difficulty fitting them in smaller BR volumes anyway unless you like the sound of a boom box.
Better alternative IMHO will be SB16PFCR25-8 from Wagner Electronics in Sydney:
https://www.wagneronline.com.au/SB-...io-speakers-pa/SB16PFCR25-8-93027/1005910/pd/
As a bonus it is much cheaper - $46.50 vs $75 for the Wavecor.
Both sets of woofs will reach F3 = 40 Hz or F6 = 33 - 35 Hz in those aperiodic volumes.
Thanks, so is aperiodic an enclosure that leaks air to the exterior?
Are you suggesting two separate volumes of 20L each, say 250x180x450 (HxWxD) stacked on top of each other making the woofer section 500H?
And the SB16PFCR25-8 is a better alternative because the enclosures can be smaller?
I already own the Wavcors.
Are you suggesting two separate volumes of 20L each, say 250x180x450 (HxWxD) stacked on top of each other making the woofer section 500H?
And the SB16PFCR25-8 is a better alternative because the enclosures can be smaller?
I already own the Wavcors.
Last edited:
Haha, I didn't realise you had the drivers already.
Ignore my previous suggestion.
The SB drivers are cheaper and their performance to price ratio is way better.
Otherwise both sets are similar.
Yes, 2 volumes of 20L each. The tweeter in one of the volumes either on top for MMT arrangement or in the middle for MTM.
I quickly modeled the system in Basta and 20L is not set in stone, can be a bit less or a bit more depending on your preferences.
Ignore my previous suggestion.
The SB drivers are cheaper and their performance to price ratio is way better.
Otherwise both sets are similar.
Yes, 2 volumes of 20L each. The tweeter in one of the volumes either on top for MMT arrangement or in the middle for MTM.
I quickly modeled the system in Basta and 20L is not set in stone, can be a bit less or a bit more depending on your preferences.
Last edited:
Thanks, I really like the idea, all drivers in separate enclosures, like lego, especially for learning and testing and with my crossovers being active I can just have banana plugs on the back of each one. Build four identical 20L enclosures. I can experiment with slightly lower volumes, like say 18L by blocking off 2L.
Reducing the volumes by a little will reduce the LF response a little bit but not by much.
What you'll experience with aperiodic loading is very articulate and tight bass, nothing like BR / PR bass, which can also be very good but much more involved.
With aperiodic boxes the mids shine, clear and very natural, almost as good as a good OB.
What you'll experience with aperiodic loading is very articulate and tight bass, nothing like BR / PR bass, which can also be very good but much more involved.
With aperiodic boxes the mids shine, clear and very natural, almost as good as a good OB.
Thanks, so with this aperiodic loading on the Wavcor in 20L will I basically only go as low as about 120Hz as that is when BassBox sees over excursion starting, according to the Q&A here:
https://www.parts-express.com/Wavecor-WF168WA02-6-1-2-Paper-Cone-Mid-Woofer-8-Ohm-298-1190
https://www.parts-express.com/Wavecor-WF168WA02-6-1-2-Paper-Cone-Mid-Woofer-8-Ohm-298-1190
I don't know about BassBox, cannot comment on that one..
Here's a screenshot from my simulation with Basta which shows F6 @ 43 Hz.
What you see there is one woofer crossed at roughly 300 Hz (magenta), the other crossed @ 2800 Hz (purple). No tweeter in this simulation. Woofers are in parallel up to 300 Hz, that's approx. the baffle step, then the second one takes over. That's why the rather steep rise of the impedance.
Above the FR curve you can also see the phase.
The second screenshot shows the cone excursion and also at maximum output level (MOL).
If you want to play with Basta yourself you'll find it here:
http://www.tolvan.com/index.php?page=/basta/basta.php
It's free but not maintained. A lot of documentation there that you can read through.
Give it a try.
If you want to go more advanced download VituixCAD, but it has a much steeper learning curve.
Here's a screenshot from my simulation with Basta which shows F6 @ 43 Hz.
What you see there is one woofer crossed at roughly 300 Hz (magenta), the other crossed @ 2800 Hz (purple). No tweeter in this simulation. Woofers are in parallel up to 300 Hz, that's approx. the baffle step, then the second one takes over. That's why the rather steep rise of the impedance.
Above the FR curve you can also see the phase.
The second screenshot shows the cone excursion and also at maximum output level (MOL).
If you want to play with Basta yourself you'll find it here:
http://www.tolvan.com/index.php?page=/basta/basta.php
It's free but not maintained. A lot of documentation there that you can read through.
Give it a try.
If you want to go more advanced download VituixCAD, but it has a much steeper learning curve.
Attachments
Last edited: