Hi!
Woofer Tester 2 is already shipped si I'll get it in 1-2weeks. Until then my plan is to play with the factory spec numbers and learn a little in Hornresp.
Btw, the Tapped Horn Design spreadsheet is downloaded from Volvotreter Homepage , top of the download section.
I also will need to look a little into how to make the cabinet plans, and folding the horn..
Hopefully my drivers will do great in this folded tapped horn..
John
Woofer Tester 2 is already shipped si I'll get it in 1-2weeks. Until then my plan is to play with the factory spec numbers and learn a little in Hornresp.
Btw, the Tapped Horn Design spreadsheet is downloaded from Volvotreter Homepage , top of the download section.
I also will need to look a little into how to make the cabinet plans, and folding the horn..
Hopefully my drivers will do great in this folded tapped horn..
John
Great. Hope I'll be able to use the possibilities presented in it.
It have been some years since las time I used a pen and paper making sketchups..
Time to refresh!The folding method looks nice, just need some trial and error attempts.
But first, reasoneable parameters.
I'll try to get some time on my laptop in a little while for some attempts and post them up here.
John
So are you saying that the WT3 from PE is not a good piece of equipment? I own one and I have used it and when I get it to work it seems to work well. Also I think one of the important factors in a good driver for a TH is a low Qes. It seems that the lower the Q is the smaller the horn is and the cleaner the impulse response is. Amazingly the one of the best woofers I have found for a TH is an extremely cheap ($35) 8" woofer from MCM electronics. 8'' High Excursion Woofer | MCM Audio Select | 55-2421 (552421) also PA drivers seem to work well, I found a company called Precision Devices that makes unbelievable good drivers for THs but alas their site has no prices, so I suspect they are quite costly.
Well the higher the better for Xmax you want at least 5mm but some woofers have as much as 18mm so I guess it all depends on what you have available. the highest Q I would consider good is .35 but as before the lower the better I just found a driver with a .20 so that is fantastic. As for Vas I guess it just depends how big you can make your box. A good TH that gets nice and low could end up having a volume 3 or 4 X Vas.
Not at all. I'm just saying that the Woofer Tester 2 is a better piece of equipment.
More info here.
That MCM driver is a good driver, I have done several tapped horns with it. It is often on sale for even less ($25).
It is said to be not as good as an S&L WT2.
The WT3 is not quite as accurate as Speaker Workshop, or any of the other software testing suites. It is a lot more convenient though.
Great. Hope I'll be able to use the possibilities presented in it.
It have been some years since las time I used a pen and paper making sketchups..
The folding method looks nice, just need some trial and error attempts.
But first, reasoneable parameters.
I'll try to get some time on my laptop in a little while for some attempts and post them up here.
John
I was referring to the Google app Sketchup. I am still learning it, but it is FAR superior to pencil on paper (which I still use FAR too often).
I see my family life is cutting too much from my internet hours..
I am not able to use Autocad, paint is hard enough!
I've been playing around in Hornresp all night.. Just not able to do it within the 3db criteria without dropping S1 to 90.
Why doesn't we want a smaller S1 than SD/4? Is it too hard on the driver?
At the moment I'm not able to read what the other charts in Hornresp are telling me, but I'm working on it.
Any hints appreciated!
John
Attachments
S2 should be Sd/4. Too high a compression ratio is rough on drivers and also makes it hard to install a driver. That is one of the drawbacks with this particular driver, but since you have it, let's try to work around it.
Look closely at the criteria posted by MaVo in post 14, it has two different tapers, a slow taper near the throat, a faster rate nearer the mouth. This is one way to minimize the ripples.
Ahh! Temporarily forgot about that one...
Can't the driver be installed with it's magnet pointing out the mouth of the horn?
Thanks.
That will have to be a project for tomorrow, it's 01.40 here..
I'll try to be back tomorrow with my next attempt!
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.