Box size for Dayton PS95-8 dirver?

[nas3000]

Hello,

I have couple pairs of Dayton PS95-8 speakers. Currently have built folded TABAQ (ML-TL) version, and the sound is "good" in most of the range and OK or "almost good" at best in the lower Hz. The volume of the TABAQ box is ~9.5 Liters. Obviously the thing those speakers are lacking is decent low end extension. PS95-8 for my ears are not much into sub 70Hz range which TABAQ boxes are made for.

It looks like I have to do the obvious: to reduce box size and probably go with simple bass reflex or closed box just for the sake of simplicity. I don't think I can push those drivers very low. Don't get me wrong - I would like to have some bass extension, but... I am trying to be realistic about driver capabilities.
Tried WinISD, but I don't get good results with it. With closed box the sim results are disappointing. The vented box show some promise, but I am not happy with pretty much all of the results. The only one I like is ~4-4.5 Liters and ~70-75Hz tuning.

Those drivers are pretty popular ones and I have seen them on internet built into pretty much any type of box but as all of you know on Youtube and internet forums pretty much everything works.
Can someone be kind and run the sim for me or share a box and vent size that sounds decent?

Thank you!

 

[abstract]

Brace yourself...
For real bass, you may need to add a pair of woofers.

If you want more bass out of them, you could try corner loading them. Hornresp has an option for running sims in 1-pi steradian space.
I have the PS95-8's, and they are nice. But I run them in 1L with resistive venting, which was a nice idea but they sound a lot cleaner and better with a pair of 10"ers doing bass and mid-bass duty below ~800-500Hz.

I keep meaning to rebuild them, but the boxes are just so cute and convenient that I haven't gotten round to it, despite knowing that they'd be capable of a bit more.

https://lechaudio.altervista.org/my-take-on-the-dayton-ps95-8-speaker/
As for bass duty, I'm looking at the Dayton PA255-8
https://www.daytonaudio.com/product/75/pa255-8-10-pro-woofer-8-ohm
or the Eminence Alpha 10a
https://www.eminence.com/speakers/speaker-detail/?model=Alpha_10A

 

[nas3000]

Brace yourself...
For real bass, you may need to add a pair of woofers.

If you want more bass out of them, you could try corner loading them. Hornresp has an option for running sims in 1-pi steradian space.
I have the PS95-8's, and they are nice. But I run them in 1L with resistive venting, which was a nice idea but they sound a lot cleaner and better with a pair of 10"ers doing bass and mid-bass duty below ~800-500Hz.

I keep meaning to rebuild them, but the boxes are just so cute and convenient that I haven't gotten round to it, despite knowing that they'd be capable of a bit more.

https://lechaudio.altervista.org/my-take-on-the-dayton-ps95-8-speaker/
As for bass duty, I'm looking at the Dayton PA255-8
https://www.daytonaudio.com/product/75/pa255-8-10-pro-woofer-8-ohm
or the Eminence Alpha 10a
https://www.eminence.com/speakers/speaker-detail/?model=Alpha_10A

Dear Abstract,

Regarding the bass amount: it is not comparable to any 2,3,4-way system but in TABAQ enclosure (~95% similar MLTL) there is some bass. Maybe I expressed myself wrong - they have some small punch in them. Even more than I expected. I made boxes with exchangeable vents and made some experiments with different amount of stuffing. With some configuration you could hear rumble even from ~28Hz. The thing is that when you make those speakers play <60Hz sounds the mids and highs are getting very distorted. The lower you make those speaker play, the less overall sound quality you have. For some bass but you loose the best PS95 can offer - pure voice zone sounds.

Aperiodic could work, thanks for idea.

Everything you told is very true. But I would like to stay on the topic in this thread - the box size for those drivers as pure fullrange speakers. Probably would like to try bass reflex first. Those drivers have some magic in them and I would like to keep it that way. They will be used in 0.1-0.5W range, in background music listening.

 

[Davor D]

For max linear response you need something like Vb= 6,4 liters and Fb= 69Hz and that would be my choice for BR.
But I think better option would be to go to Hornresp and try to model some fully stuffed TL. With low SPL and high(ish) Qts this driver looks like promising candidate.

 

[nas3000]

For max linear response you need something like Vb= 6,4 liters and Fb= 69Hz and that would be my choice for BR.
But I think better option would be to go to Hornresp and try to model some fully stuffed TL. With low SPL and high(ish) Qts this driver looks like promising candidate.

Davor,

Vb= 6,4 liters and Fb= 69Hz - how you came with those numbers? I can get very very similar results at 4.5 Liters and Fb = 72Hz. Screenshot of Winisd with 6.4 and 4.5. Probably also there are many more similar tuning variations couple of Liters around 6.4L and couple Hz around 70Hz, but... does it mean that the sound also will be very very similar?
Thanks in advance.

 

[GM]

the box size for those drivers as pure fullrange speakers.

'In for a penny, in for a pound' I say, so for your amusement a ~42 Hz parabolic corner loaded BLH that has 1 watt protection to the driver's roll off limit somewhere below 20 Hz with > 95 dB from 40 Hz - up.

 

[freddi]

that's cool GM ! it also looks ok at `1.91M/50Hz

 

[nas3000]

'In for a penny, in for a pound' I say, so for your amusement a ~42 Hz parabolic corner loaded BLH that has 1 watt protection to the driver's roll off limit somewhere below 20 Hz with > 95 dB from 40 Hz - up.

GM, this is HornResp file, which I have to rename to .dat and open? If I do that - HornResp tries to convert that file and then hangs

 

[GM]

Being a Windoze user, I only know its .txt file can be opened with WORD, Notepad or Open Office equal, but that just gets the inputs, so AFAIK you'll need to IMPORT/open it in HR to view all the various plots.

 

[nas3000]

Being a Windoze user, I only know its .txt file can be opened with WORD, Notepad or Open Office equal, but that just gets the inputs, so AFAIK you'll need to IMPORT/open it in HR to view all the various plots.

I just found the import function Thnks a lot

 

[GM]

 

[nas3000]

In for a penny, in for a pound' I say, so for your amusement a ~42 Hz parabolic corner loaded BLH that has 1 watt protection to the driver's roll off limit somewhere below 20 Hz with > 95 dB from 40 Hz - up.

Somehow I feel this is too behemoth for such a small driver. Definitely would like to stick to smaller boxes

 

[Davor D]

Fb= 6,4 liters and Fb= 69Hz - how you came with those numbers?

With these popular formulas:

Vb=20*Vas*Qts^3.3
Fb=Fs*0.42*Qts^-0.96
F3=Fs*0.28*Qts^-1.4

I can get very very similar results at 4.5 Liters and Fb = 72Hz. Screenshot of Winisd with 6.4 and 4.5. Probably also there are many more similar tuning variations couple of Liters around 6.4L and couple Hz around 70Hz, but... does it mean that the sound also will be very very similar?

Yes.
Formulas are approximate assuming average losses. Small variations wont make any significant difference, as shown in your sims. If 4,5liters/72Hz better suits your design goals go for it.

 

[GM]

Somehow I feel this is too behemoth for such a small driver. Definitely would like to stick to smaller boxes

The price one pays for going low and/or loud, i.e. driver size per se has nothing to do with it: https://www.trueaudio.com/st_trade.htm