@DrewsBrews said:
Dang thats a hefty change. Using a bunch of neodymium? I tried it myself one time, but got much smaller changes. Maybe due to a subwoofer having heavier cone with more influence on Q.
If I were to try to mimic this Infinity design myself with the MCMs.. I'd have to make em deeper for ~2cf ported to get satisfactory bass extension.
I used ferrite magnets. They are 2.5" diameter .75" thick.
@Steve_Lee said:
Those ^ look good. Pricey though.
Still have a quad of MCM55-5670's looking for a home and using DSP they model like this in 34 Liters (1.2 cu ft):
f3 = 45 Hz, f6 = 39 Hz.
Oops - Sorry for the thread hijack, Erik.
No problem. I was looking at the MCMs for while but they just go low enough for me or it needed a big box.
I have the RSS210HO-8s two per box but I am using them with PRs. They are worth the money.
The GRS that was mentioned I also have. It is in a sealed box and gets to 41 hz in .5 cubic feet. They are great for the price but as mentioned, doesn't go very high. 300 hz is as high as I could go with them.
@Steve_Lee said:
I put a quad of those ^ subs in my PE wish list for purchase later this year when another major sale comes up - thanks for the link pointing them out.
Using the MCM's and a Linkwitz Transform I get this (Just an FYI):
f3 = 40, f6 = 32 & f10 = 24 Hz.
A pair of those drivers have the Xmax to handle that type of filter, that's for sure.
@Steve_Lee said:
I put a quad of those ^ subs in my PE wish list for purchase later this year when another major sale comes up - thanks for the link pointing them out.
Using the MCM's and a Linkwitz Transform I get this (Just an FYI):
f3 = 40, f6 = 32 & f10 = 24 Hz.
A pair of those drivers have the Xmax to handle that type of filter, that's for sure.
I was wondering about that. Usually a Linkwitz Transform will cause problems there.
Comments
Those ^ look good. Pricey though.
Still have a quad of MCM55-5670's looking for a home and using DSP they model like this in 34 Liters (1.2 cu ft):
f3 = 45 Hz, f6 = 39 Hz.
Oops - Sorry for the thread hijack, Erik.
https://www.parts-express.com/GRS-8SW-4HE-8-Paper-Cone-Rubber-Surround-High-Excursion-Subwoofer-4-Ohm-292-816?quantity=1
Depends how high you need them to reach though. That is the price of cheap.
I used ferrite magnets. They are 2.5" diameter .75" thick.
No problem. I was looking at the MCMs for while but they just go low enough for me or it needed a big box.
I have the RSS210HO-8s two per box but I am using them with PRs. They are worth the money.
The GRS that was mentioned I also have. It is in a sealed box and gets to 41 hz in .5 cubic feet. They are great for the price but as mentioned, doesn't go very high. 300 hz is as high as I could go with them.
I put a quad of those ^ subs in my PE wish list for purchase later this year when another major sale comes up - thanks for the link pointing them out.
Using the MCM's and a Linkwitz Transform I get this (Just an FYI):
f3 = 40, f6 = 32 & f10 = 24 Hz.
A pair of those drivers have the Xmax to handle that type of filter, that's for sure.
I was wondering about that. Usually a Linkwitz Transform will cause problems there.
More inspiration:
https://diy.midwestaudio.club/discussion/910/new-3-way-project-the-oakhearts/p1
Funny thing is, I have the Dayton 2" domes and the Fountek ribbons tweeters already but I also have the GRS NEO 3 copies.
I might have to check these out:
https://ebay.com/itm/321820016777
Can find the same pair for about $31 shipped on Aliexpress. Probably ships from the same place.
Junk. Been there, done that.
The bestons aren't much more and they are good.
I stumbled upon these:
https://newark.com/multicomp-pro/mp011857/speaker-woofer-89db-8-ohm-60w/dp/76AK9650
If we can believe the specs I modeled a pair with an F3 of ~44hz in 1.75cf. Still ported though (45hz tune). $31 and they look the part.
^ Looks like it would make for a nice midrange with a separate bass bin and ribbon on top . . . very punchy
Oops, I neglected to say it was 2x drivers in the 1.75cf. fixed
Looks like the 5 latest releases of the Multicomp drivers are on sale for a heavy discount.
Which models?
https://diy.midwestaudio.club/discussion/comment/57851/#Comment_57851