Hmm so a shallow mid enclosure is a thing. I have been daydreaming of a similar design layout for an isobaric 3-way to take a woofer that likes alot of box volume and shoehorn it into a bookshelf. But I dismissed it figuring that the close back wall would be tough to work with for the mid since the space to damp the backwave reflection is so limited.
I've had a mid chamber as shallow as 4". That's about as shallow as I'd go. It allows two layers of 1" thick damping material with the magnet just touching. I like to use two different densities for the damping. Usually 1" open cell foam and 1" Ultra-touch.
Shallow mid chamber, but the mid will be crossed over pertty high to the isobaric woofers and the mid chamber will have foam on the back wall and suffed with ultra touch and polyfill cradling the mid cone. In acual listening at normal volume, shouldn't be too bad.
@hifiside said:
A friend of mine wishful thinking. Monkey coffin.
18”,8”and tweeter. The 8” is not gonna make the cut.
Duuuuuddddeeee! That is flipping awesome! This is such a weird coincidence, recently I have been in a super nostalgic car audio mood (happens to me from time to time but man I love to reminisce..) and just obsessing over 90s fosgate stuff. Looking at old ads, pics, installs, just falling in love all over again. Super cool!
I see you have some raw woofer parts on eBay. Seems there is really a market for people building their own subs (I find it a blast!) but the parts are hit and miss on stock at places like LOB and PSi.. with your far east connections any plans to maybe stock a whole line of that stuff? I know it’s not your target market but just curious.
@dynamo said:
I see you have some raw woofer parts on eBay. Seems there is really a market for people building their own subs (I find it a blast!) but the parts are hit and miss on stock at places like LOB and PSi.. with your far east connections any plans to maybe stock a whole line of that stuff? I know it’s not your target market but just curious.
It’s funny you should ask. I was just going over some of the samples I got in in the last few months. Yes I will be making a page on my website for actually speaker building. Right now I think a lot of people are doing big subwoofers for car audio SPL and I would kinda like to maybe import some stuff, so people like us can build more higher end speakers of our own.
Yes that is awesome! Biggest hurdles to that I’ve found are of course smaller baskets, but small non-sub motors, and despite several attempts in my garage, no ability to do a copper sleeve or shorting rings. Also non-sub spiders are hard to come across.
I’ve gotten some of my regular speaker cones off eBay from a place in Michigan but I think they may have folded, haven’t looked in a while..
Short story is the ability to build high end mids and woofers would be so cool and really open a whole new aspect to diy speakers! I had a lot of fun building mine, even have a pair that I wound my own coils on titanium formers from titanium sheet. They are the 8” in my avatar. Super fun.
Oh and new high end drivers are so effing expensive now that it even could be financially beneficial for the builder.
Comments
Don't you dare mutilate those 8" lol
The terminal plates got pushed out to the first of the year. Boo.
https://www.jfcomponents.com/
Making a cabinet today for someone. It’s about time to go home and make cookies. Happy Holidays!
https://www.jfcomponents.com/
Isobaric [dual] reflex?
That is what it looks like to me.
InDIYana Event Website
Hmm so a shallow mid enclosure is a thing. I have been daydreaming of a similar design layout for an isobaric 3-way to take a woofer that likes alot of box volume and shoehorn it into a bookshelf. But I dismissed it figuring that the close back wall would be tough to work with for the mid since the space to damp the backwave reflection is so limited.
I've had a mid chamber as shallow as 4". That's about as shallow as I'd go. It allows two layers of 1" thick damping material with the magnet just touching. I like to use two different densities for the damping. Usually 1" open cell foam and 1" Ultra-touch.
The cabs are looking good, Brad!
Shallow mid chamber, but the mid will be crossed over pertty high to the isobaric woofers and the mid chamber will have foam on the back wall and suffed with ultra touch and polyfill cradling the mid cone. In acual listening at normal volume, shouldn't be too bad.
Posting more details on the MAC Drivers thread.
Merry Christmas and Happy Holidays!!!
Looks like some copper on the motor. I never read that in the specs.
https://www.jfcomponents.com/
3rd bullet point on the feature list
TW030WA11/12/13/14 are very good performers.
I read copper clad and just assumed CCAW. I might have to keep a set for myself.
https://www.jfcomponents.com/
My own measurement at 2.8V aligned reasonably well with what Hificompass shows for TW030WA11.
Came in early and finished these up.
https://www.jfcomponents.com/
I need that access panel on my next build. Any tips for fitting the panel?
I used a poplar trim ring on the inside so screwing to it would not wear out so easy like MDF and did a 1/16 inch recess on panel for thin foam tape.
https://www.jfcomponents.com/
Some bracing today.
https://www.jfcomponents.com/
Looks like a big subwoofer nest . . .
👍
https://www.jfcomponents.com/
Dude! Not only is it Sunday, it's New Years Eve. Take a break
https://www.jfcomponents.com/
Sub cabinet done. On to some big MMT or MTM’s.
https://www.jfcomponents.com/
Duuuuuddddeeee! That is flipping awesome! This is such a weird coincidence, recently I have been in a super nostalgic car audio mood (happens to me from time to time but man I love to reminisce..) and just obsessing over 90s fosgate stuff. Looking at old ads, pics, installs, just falling in love all over again. Super cool!
I see you have some raw woofer parts on eBay. Seems there is really a market for people building their own subs (I find it a blast!) but the parts are hit and miss on stock at places like LOB and PSi.. with your far east connections any plans to maybe stock a whole line of that stuff? I know it’s not your target market but just curious.
It’s funny you should ask. I was just going over some of the samples I got in in the last few months. Yes I will be making a page on my website for actually speaker building. Right now I think a lot of people are doing big subwoofers for car audio SPL and I would kinda like to maybe import some stuff, so people like us can build more higher end speakers of our own.
https://www.jfcomponents.com/
Yes that is awesome! Biggest hurdles to that I’ve found are of course smaller baskets, but small non-sub motors, and despite several attempts in my garage, no ability to do a copper sleeve or shorting rings. Also non-sub spiders are hard to come across.
I’ve gotten some of my regular speaker cones off eBay from a place in Michigan but I think they may have folded, haven’t looked in a while..
Short story is the ability to build high end mids and woofers would be so cool and really open a whole new aspect to diy speakers! I had a lot of fun building mine, even have a pair that I wound my own coils on titanium formers from titanium sheet. They are the 8” in my avatar. Super fun.
Oh and new high end drivers are so effing expensive now that it even could be financially beneficial for the builder.
Modifying another horn. For testing purposes
For testing purposes
https://www.jfcomponents.com/
The SB CD that were $22 at madisound.
https://www.jfcomponents.com/
It looks bigger than I thought. I'm still not sure how they can build & ship that thing for under $25. Hope it measures well.
Added a little OB low-end.
https://www.jfcomponents.com/
Do you get any useful bass extension with so little baffle?