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Hey guys...we need a little rallying here... - Page 207

post #6181 of 9846
Quote:
Originally Posted by Mrkazador View Post

If you can fit the delta pro 12a and definimax in the 10" ported flat pack, it would be perfect.


And if you can fit the TD12M in this pack, that's even better.tongue.gif
post #6182 of 9846
Quote:
Originally Posted by smokarz View Post

And if you can fit the TD12M in this pack, that's even better.tongue.gif

Yes it would! biggrin.gif
post #6183 of 9846
It would depend on the bracing behind the woofer. The Definimax 12 is 5.32" depth and the TD12M is 6.556"...~1.25". If it's too close to the bracing, a double baffle would pull the woofer away further.
post #6184 of 9846
Quote:
Originally Posted by robotbunny View Post

It would depend on the bracing behind the woofer. The Definimax 12 is 5.32" depth and the TD12M is 6.556"...~1.25". If it's too close to the bracing, a double baffle would pull the woofer away further.
The Definimax's pole vent needs room to breath and shouldn't have a brace up against it anyway.
post #6185 of 9846
Quote:
Originally Posted by Face2 View Post

The Definimax's pole vent needs room to breath and shouldn't have a brace up against it anyway.

Yep. Erich accounted for that, so the AE should fit. smile.gif
post #6186 of 9846
Just so everyone knows, there are flat packs for every single kit. I have some of them right now and more on the way.

The CNC guys are a little behind due to a bearing issue and then the flu nailed a few people. Hopefully the SEOS and subwoofer flat packs get done very soon. They should have all been done by now, but the typical unforeseen issues have come up again.

Don't let the boxes slow you down on ordering because the boxes will be shipping separately anyway.


On the A&E, will the same box volume as the sealed Definimax be okay?
post #6187 of 9846
I hoping/waiting to see if you do a front panel for TD12's and Daniels. No rush either way for me and didn't want to bug.
post #6188 of 9846
Quote:
Originally Posted by phidauex View Post

I apologize for not making it all the way through the 206 pages, but I'm planning yet another econowave build, and love the look of the SEOS waveguides and DIY sound group baffles. However, I have my own CNC and do most of my own fabricating to keep the cost low on my projects (or rather, amortize the CNC cost over more projects!).
I'm not sure if this is that kind of project or not, but are the 3D models for the SEOS waveguide available, or a description of the mathematical model of the shape? I can 3D profile it out of MDF fairly quickly, and would be a fun way to integrate it directly into the painted baffles.
I'm certainly not interested in commercial production (even on a hobby scale) - this would just be for personal use.
Thanks,
Sam

I think the 3D file needs a decent amount of work after it's cut. There's work around the throat angle, and roundovers that gets worked on by hand with the original molds.
post #6189 of 9846
Quote:
Originally Posted by pgwalsh View Post

I hoping/waiting to see if you do a front panel for TD12's and Daniels. No rush either way for me and didn't want to bug.

Both will be done. The TD12's are already underway. Just curious about exact internal volumes so I know which box they will go with.
post #6190 of 9846

The AE TD12s needs a 1.7cu ft sealed box for a QTC of 0.703. For a ported design, somewhere around 2.5 - 3 cu ft with a tune around 30hz looks best I think.

post #6191 of 9846
Hey Erich, I have ordered a couple of BA-750's from you. I've also sent you an e-mail or two, but haven't got a reply?
I just thought I should ask here in case my e-mails go in your spam filter or something? If your just a bit busy and haven't checked your e-mail lately I fully understand.

Admire the work you do, for way to little pay (You should increase the prices slightly to cut you some financial slack IMO).
post #6192 of 9846
Quote:
Originally Posted by FredrikC View Post

Hey Erich, I have ordered a couple of BA-750's from you. I've also sent you an e-mail or two, but haven't got a reply?
I just thought I should ask here in case my e-mails go in your spam filter or something? If your just a bit busy and haven't checked your e-mail lately I fully understand.
Admire the work you do, for way to little pay (You should increase the prices slightly to cut you some financial slack IMO).

I test each BA-750 to get matching pairs. I'll be answering your email today.
post #6193 of 9846
Matched pairs? That is awesome and unexpected. biggrin.gif

Before you ship anything can we please speak over e-mail. I have another question regarding my order for you.

My plan is using the Ba-750's with a SEOS 18 and dual 8" woofers runing in a cardoid like enclosure, trying to obtain control over dispersion down to about 250-300hz. I'm hoping the Ba-750 in a SEOS 18 will allow me to cross well below 1kHz. 750-850hz would be ideal, Distortion measurements from diysoungroup forums look promising,. I'll be using digital XO, which means I can cross very steep if I like.
post #6194 of 9846
Quote:
Originally Posted by FredrikC View Post

Matched pairs? That is awesome and unexpected. biggrin.gif
Before you ship anything can we please speak over e-mail. I have another question regarding my order for you.
My plan is using the Ba-750's with a SEOS 18 and dual 8" woofers runing in a cardoid like enclosure, trying to obtain control over dispersion down to about 250-300hz. I'm hoping the Ba-750 in a SEOS 18 will allow me to cross well below 1kHz. 750-850hz would be ideal, Distortion measurements from diysoungroup forums look promising,. I'll be using digital XO, which means I can cross very steep if I like.

I test all CD's and try to match them as close as possible. The 360's are almost always dead on the same from one to the next though. The larger CD's can have some slight differences, which is why I try to match them with each other.
post #6195 of 9846
Quote:
Originally Posted by FredrikC View Post

Matched pairs? That is awesome and unexpected. biggrin.gif
Before you ship anything can we please speak over e-mail. I have another question regarding my order for you.
My plan is using the Ba-750's with a SEOS 18 and dual 8" woofers runing in a cardoid like enclosure, trying to obtain control over dispersion down to about 250-300hz. I'm hoping the Ba-750 in a SEOS 18 will allow me to cross well below 1kHz. 750-850hz would be ideal, Distortion measurements from diysoungroup forums look promising,. I'll be using digital XO, which means I can cross very steep if I like.

That sounds like a very cool project. Please put up a build thread with measurements on one of the forums when you get to that point. What 8s are you planning to use? How are you building the cardioid cabinet?
post #6196 of 9846
Can't wait to see these sub flat packs! I'm holding off cutting my own to see what your going to have.
post #6197 of 9846
Quote:
Originally Posted by Erich H View Post

I think the 3D file needs a decent amount of work after it's cut. There's work around the throat angle, and roundovers that gets worked on by hand with the original molds.

I second having the mathematical cuts. However I will be cutting by hand at my friends shop.

Waiting til christmas is over to see how the funds are working out to make a purchase of the tempests. Love this thread though!
post #6198 of 9846
Quote:
Originally Posted by coctostan View Post

That sounds like a very cool project. Please put up a build thread with measurements on one of the forums when you get to that point. What 8s are you planning to use? How are you building the cardioid cabinet?

This is still on the drawing board, so nothing is certain. Especially getting the cardoid cabinet right will be tricky. Inspiration comes from diy audio forums and some comercial speakers: http://www.amphion.fi/en/products/krypton3/ , http://www.gradient.fi/Gradient/Helsinki_1.5.html
Basically a box with open sides, with some kind of resistance material to provide delay.

I've researched alot of 8" drivers. B&C, Beyma, Fatal Pro, PLH, and many others make good 8" drivers, but right now I think I will be using the Jantzen JA8008 HES. Mainly because I can get them from a Norwegian forum friend and they look to fit my criteria.
Below 300hz somewhere I plan on using a quality 18" pro driver and dual passive radiators on the back. I'f I want I can remove a PR and expiriment with cardoid bass aswell.

Here is a concept sketch:

When I have come far enough I will be happy to share whater result I end up with.
post #6199 of 9846
That looks like a great idea. I've never considered cardioid for midrange, but I bet it would work great. It will definitely take some testing and experimentation with different openings and resistance, but you should be able to shape things nicely. It would definitely be a good way to get directivity control lower in a smaller footprint. Big thumbs up for the creativity.
post #6200 of 9846
I'm pondering the merits of a SEOS-24 + 1.4" 18sound CD, over the 18" SEOS +BA750 I have at the moment. The opportunity to work with a really large horn is attractive, and I'd probably just build two systems.

But practically, in terms of crossing over to a 15TDM, I'm not sure if there's an advantage in a horn that goes lower. Does this improve vocal quality to have a CD playing around 500 Hz or so?
post #6201 of 9846
Thread Starter 
erich, with respect to the ae speakers td12, are you referring to the td12s or the td12m?
post #6202 of 9846
Quote:
Originally Posted by Angaria2 View Post

I'm pondering the merits of a SEOS-24 + 1.4" 18sound CD, over the 18" SEOS +BA750 I have at the moment. The opportunity to work with a really large horn is attractive, and I'd probably just build two systems.
But practically, in terms of crossing over to a 15TDM, I'm not sure if there's an advantage in a horn that goes lower. Does this improve vocal quality to have a CD playing around 500 Hz or so?

Only one way to find out wink.gif

But seriously, I doubt many 1,4" CDs will do 500hz. Maybe 600 with steep XO. And you will probably have to look in the higher price ranges. JBL 2452H-sl, TAD4003, or maybe the new 18 sound 1.5" exit drivers.
You might even need a supertweeter since the polars will start to beam above 12kHz, instead of 16kHz with a 1".
But if size and funds are not limiting factors I would be doing that as well.

What can you tell me about the BA-750 / Seos 18" combo? Are you not satisfied with the sound or are you just curious about going bigger means even better? Done any measurements?
post #6203 of 9846
Quote:
Originally Posted by LTD02 View Post

erich, with respect to the ae speakers td12, are you referring to the td12s or the td12m?


i would venture to guess it's the TD12M, since that's what many people have.
post #6204 of 9846
So i plan on using the Tempest 12 to use as LCR, what would be the best bet for surrounds? one of the 10in woofer models or?
post #6205 of 9846
Thread Starter 
"i would venture to guess it's the TD12M, since that's what many people have."

it rolls off too high for most folks for sealed, so that leaves ported.

unless it is really stretched, it isn't a full range driver.

so, that leaves something ported, to be used with a sub.

in that context, 1.25 cubic feet tuned to 55hz seems reasonable. -3db around 70hz, so should work with 80hz or 60hz crossover points. 100 watts:

post #6206 of 9846
Thread Starter 
angaria, most 1.4" cd's won't take full advantage of a 24" horn, unless you are talking about one of the large format (very expensive) 1.4" cd's.
post #6207 of 9846

There is a small error on diysoundgroup.com. When you highlight >Flat Packs and select SEOS Cabinets, it shows nothing. If you select Flat Packs, it shows the 3 SEOS cabinets but not the other flat packs. Subwoofer Cabinets and Speaker Cabinets should also be shown when selecting >Flat Packs. Also, do you plan to sell any rubber feet for the cabinets?

post #6208 of 9846
Quote:
Originally Posted by LTD02 View Post

angaria, most 1.4" cd's won't take full advantage of a 24" horn, unless you are talking about one of the large format (very expensive) 1.4" cd's.
The Radian 835PB looks like it could be a good choice, no?
post #6209 of 9846
Thread Starter 
tough to say. on what horn were the measurements taken?
post #6210 of 9846
Quote:
Originally Posted by LTD02 View Post

tough to say. on what horn were the measurements taken?
True, it's tough getting any information out of them.
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