Attached is WinISD design for Epique. Anyone can see design is well within driver specs. No voodoo required.
Thanks, but I apparently need a new system file? to open in Win 7 Pro and what I found didn't list the 'pro' extension plus more than I want to try to do [minimal computer skills], so mind posting screen shots or as .pdf?
@tsardoz, when you input the driver's Znom in place of Re, was that a deliberate strategy to compensate for the additional series resistance of wiring, or just a mistake?
It's just that, if the former, an extra 1.2Ω is rather a lot - most people use 0.5Ω. You'd only need to use 1.2Ω if you had exceptionally long, skinny speaker cable, which isn't a good idea.
Also, rather than hard-coding that into your driver record, it's perhaps easier to put it in the "series resistance" field in the signal tab, that lets you get at it to see the effects of different values a little more easily.
That being said, it only makes <1dB difference to your model, which you could easily tweak with adjustments to the LT.
@GM, not sure what you mean about needing a new "system" file, the latest version of WinISD (0.7.0.950) runs just fine on Win 7, are you using an older version perhaps? That being said, I can't remember if there were any compatibility issues between older WinISD project files and the current version or vice versa, it's been so long since the current version came out.
Anyway, here's a few screengrabs:
It's just that, if the former, an extra 1.2Ω is rather a lot - most people use 0.5Ω. You'd only need to use 1.2Ω if you had exceptionally long, skinny speaker cable, which isn't a good idea.
Also, rather than hard-coding that into your driver record, it's perhaps easier to put it in the "series resistance" field in the signal tab, that lets you get at it to see the effects of different values a little more easily.
That being said, it only makes <1dB difference to your model, which you could easily tweak with adjustments to the LT.
@GM, not sure what you mean about needing a new "system" file, the latest version of WinISD (0.7.0.950) runs just fine on Win 7, are you using an older version perhaps? That being said, I can't remember if there were any compatibility issues between older WinISD project files and the current version or vice versa, it's been so long since the current version came out.
Anyway, here's a few screengrabs:
Thanks! Long 'sad sack' story short; I haven't used it in ages though DL'd a new version in 2019, but for whatever reason didn't install it [yet]. 🙁
I’m sorry to revive a year old thread, but I’m considering a build similar to yours using the Epique 7” drivers, dual opposed in about 20L sealed and eq’d. Probably a pair. And it looks like you’ve done a proof of concept which is quite helpful before spending a bunch of money.
Your zip files appear to be empty for me though. Can you put them up again by chance?
Also, for the graphs posted above, what is the power input and output SPL? I will be using these far field so this is a bigger concern for me. My sims show about 104db with 300W with an LT, f3@35.
Thanks
Your zip files appear to be empty for me though. Can you put them up again by chance?
Also, for the graphs posted above, what is the power input and output SPL? I will be using these far field so this is a bigger concern for me. My sims show about 104db with 300W with an LT, f3@35.
Thanks
Not using any version yet in this Makes two of us in that 2016 is latest listed on the LinearTeam page, so all files except the .exe is listed as 2016 when I got this laptop whereas the .exe is winisd-07x.exe I DL'd in 2019 for whatever reason.
Previous version was Pro Alpha in Win 2k Pro, which I later put on an old Win 7 laptop 'freebie'.
Anyway, should it open in the regular program files or x86? TIA
Is that a reply to me GM or did I get you replying to year old posts too?
I didn’t put your earlier post together with my issue. I didn’t realize that they were WinISD files. I thought It was a more detailed write up on the project. When I click to unzip the folder on my iPad, it’s just empty as far as I can tell. Usually it unzips to a folder like normal, but this is just a question mark icon.
Anyways, I did my own sims so I don’t really need to see his.
Do you personally think these drivers could work in that scenario (dual opposed, sealed and eq’d) in a far field music only system? One or two subs. Modeling shows I can get away with 300 watts (150 per driver), so that’s what I’d use.
I have a larger system for home theater and some music with dual near field 390hf and 12” mid bass modules, so I know what real subs can do. Here I’m looking for smooth, low distortion reasonably deep bass, but nothing earth shaking. The rooms pretty good size btw.
Any input would be appreciated. Thanks
I didn’t put your earlier post together with my issue. I didn’t realize that they were WinISD files. I thought It was a more detailed write up on the project. When I click to unzip the folder on my iPad, it’s just empty as far as I can tell. Usually it unzips to a folder like normal, but this is just a question mark icon.
Anyways, I did my own sims so I don’t really need to see his.
Do you personally think these drivers could work in that scenario (dual opposed, sealed and eq’d) in a far field music only system? One or two subs. Modeling shows I can get away with 300 watts (150 per driver), so that’s what I’d use.
I have a larger system for home theater and some music with dual near field 390hf and 12” mid bass modules, so I know what real subs can do. Here I’m looking for smooth, low distortion reasonably deep bass, but nothing earth shaking. The rooms pretty good size btw.
Any input would be appreciated. Thanks
Not unless you're also David Morison. 😉 I apparently didn't see his response and during that time I had more important stuff on my mind, so didn't pursue getting WinISD working, but seeing it today got me curious again.
Just now DL'd the zip file and it opens with a 1 KB WPR file, but don't have WinISD to view it.
If you mean these 7" Epique, then at a glance see no reason why they can't be dual opposed in 20 L net sealed @ ~0.75 Qtc, though will be somewhat under damped if much power is used due to VC heating, so finding the right EQ compromise could be tedious unless there's some sort of dynamic EQ gizmo available nowadays.
Just now DL'd the zip file and it opens with a 1 KB WPR file, but don't have WinISD to view it.
If you mean these 7" Epique, then at a glance see no reason why they can't be dual opposed in 20 L net sealed @ ~0.75 Qtc, though will be somewhat under damped if much power is used due to VC heating, so finding the right EQ compromise could be tedious unless there's some sort of dynamic EQ gizmo available nowadays.
w
why do you pick 20 litlre as a limit of little box??????? any calculation behind this??????????
Nope, I’m not David Morrison! I thought you maybe answered my question by quoting what he wrote. I thought I just wasn’t smart enough to get it
That’s the one. Can you explain that? An under damped alignment doesn’t take power as well as an over damped alignment? I did a quick search the other day and didn’t see anything mainstream that does dynamic eq. I have a spare Minidsp 2x4hd laying around so I’ll use that.
Other options are to use a couple of the matching passive radiators. That works out to a similar f3 and a bit higher max output with less power. at the expense of a steeper roll off, reduced transient response and no force cancelation.
Or use the Dayton 210ho perhaps but then the price start getting a bit steep because on top of being more expensive, they’d also require a larger amp.
That’s the one. Can you explain that? An under damped alignment doesn’t take power as well as an over damped alignment? I did a quick search the other day and didn’t see anything mainstream that does dynamic eq. I have a spare Minidsp 2x4hd laying around so I’ll use that.
Other options are to use a couple of the matching passive radiators. That works out to a similar f3 and a bit higher max output with less power. at the expense of a steeper roll off, reduced transient response and no force cancelation.
Or use the Dayton 210ho perhaps but then the price start getting a bit steep because on top of being more expensive, they’d also require a larger amp.
Hmm, poorly worded + didn't complete the thought, i.e. 'haste makes waste'
......... "will be somewhat under damped and will be much more so if much power is used due to VC heating raising effective Qts of an already fairly high Qts driver"
Passive radiators need to be at least 1.75x effective driver area (Sd), so need at least 10" based on the (Sd) of a couple of Dayton 8", which might not fit on the box and FWIW, PRs don't sound good until tuned down around 14 - 16 Hz IME, though used dual 12"/15" on one pair and dual 15"/18" on the others, so could just be due to their ability to pressurize most HIFI/HT rooms.
......... "will be somewhat under damped and will be much more so if much power is used due to VC heating raising effective Qts of an already fairly high Qts driver"Passive radiators need to be at least 1.75x effective driver area (Sd), so need at least 10" based on the (Sd) of a couple of Dayton 8", which might not fit on the box and FWIW, PRs don't sound good until tuned down around 14 - 16 Hz IME, though used dual 12"/15" on one pair and dual 15"/18" on the others, so could just be due to their ability to pressurize most HIFI/HT rooms.
Ok that makes sense now! And good to know, I never really considered that. So, for any driver that and LT circuit is being applied to, it’s best to go with a critically damped alignment and us the circuit to create the final desired Q?
The PR option I was talking about was for the Epique driver. They make matching pr’s with 19mm xmech. Two works out perfectly and that’s what I modeled with in Unibox.
Dayton 8” were another option for dual opposed sealed.
The PR option I was talking about was for the Epique driver. They make matching pr’s with 19mm xmech. Two works out perfectly and that’s what I modeled with in Unibox.
Dayton 8” were another option for dual opposed sealed.
Sorry Wik, I didn’t see your response. Actually, after checking, I ended up at 23L with the Epique. Dual opposed. That works out about q=.7 with a bit of stuffing, so yes, it’s calculated.
I also sim’d Dayton RSS210ho-8 and Lavoce SSF082.00L and ended up around 20L for those. Also dual opposed.
I’m taking inspiration from the Kef KC62 and SVS 3000 micro subwoofers and trying to keep them pretty tiny. This is for the living room in my new house and I have to keep things civil to keep my wife happy. I have a have theater room that’s just mine with a couple 120L 15” subs.
Anyone have experience with Lavoce drivers? Can the specs be trusted?
I bought a tiny 3” mid a couple years ago and the build quality is nice but I never used or measured them. I guess I could pull them out and put hem on my WT3 now that I think of it
I bought a tiny 3” mid a couple years ago and the build quality is nice but I never used or measured them. I guess I could pull them out and put hem on my WT3 now that I think of it
Actually I just found a decent review of the larger cousin to the Lavoce driver I’m considering if anyones interested. No t/s measurements though.
https://josephcrowe.com/blogs/news/...ubwoofer-review?comment=125047570516#comments
https://josephcrowe.com/blogs/news/...ubwoofer-review?comment=125047570516#comments
What software can model dual-opposed drivers? I have WinIsd, but that does dual drivers in a single sealed cabinet. Or would the results be the same>?
