Hey guys...we need a little rallying here... - Page 103

Very strange for a site with "Karma" in the name.

hey erich, i wouldn't let it bothers you for a second. look pass it and move on. the work you're doing is a godsend to the DIY community. let's focus on the tasks at hands.

Erich,

Relax. The AK folks will figure out what is going on soon enough. Your 20 posts were lost in the 14,000 replies to the econowave thread.

Clowns.

I highly appreciate all the work you have done, and hope in the future to do my part for diysoundgroup....

JSS

looks like over 100 pre-orders according to the total pre-orders page that Erich is updating...

http://www.diysoundgroup.com/plastic...re-orders.html

not bad for less than a week ....

just curious, we're still on track to do this at 150-200? or do you want to wait it out for a higher number given the current pace of pre-orders this week? I'm fine either way... just curious... hopefully now that word is leaking out to the other sites, that will help you with the pre-orders.

I should get a first listen to the deluxe econowave design this weekend. Looking forward to that to get a baseline for the whole CD inspired econowave movement that evolved into this SEOS dealio....

htdoc - make sure you do them toed-in (so that when you are way off center the farther speaker points right at you) when you listen. I've read about some people "listening" to Ewaves without being over impressed, then find they had them pointing directly forward! The toe-in isn't to fix a defect, it's because the EWaves are one of the few speaker types for which the toe-in really works to do the 'time/intensity' trading thing. The main point of the whole thing, as far as I'm concerned.

will do...

Thanks!

Now I believe I've heard that because of this toe-in a HT setting less than 12' wide a center channel is not necessarily needed? Or is it personal preference whether you run a phantom center?

my mains are about 10ft apart. i don't run a center, and don't miss it.

My mains are about 11' apart and I'm about 10' back. And I sit almost directly in front of the right speaker (!), very good center image still. Don't know whether a center would be better, but I'm not driven to find out so far. And I'm a guy who used to contstantly fool with the balance control before even when sitting in the center. Yeah, it works that well. I particularly appreciate having the image stay put when I turn my head or change my position.

still at 107?

looks like Erich updated at some point today.... at 116 now..

I'll get some more of them if we can confirm where the cutoff is going to be and if that will help push us over the top sooner... not that I need any more of them just trying to help out and ease Erich's burden a bit...

looking at other woofer options to use with these plastic units... I'd like to try a few AE woofers... if anyone is tired of waiting on the group buy, I'd be willing to buy your order out from you.. contact me via PM or shoot me an email to htdoc11 at yahoo dot com. I'm looking for TD12 models and TD15Ms... I'll likely try a couple JBL models as well....

I am with you Shane, I wanted a pair of TD15Ms, but I missed the GB. I don't care to wait 9 months for a pair, so I am in limbo whether to order them.

Shane, AudioJosh, Look around the AESpeakers forum. Just a few days ago, I read a post asking If someone would take (3) TD12x's off his hands. They were ready to ship...
http://www.aespeakers.com/phpbb2/vie...php?f=7&t=2905
I do not believe they were part of the group buy, buy.

JL

Ah, I see Shane Is quick, good luck.

Flatpack 10" evaluation box.

jzagaja, Wow. I can see some serious WAF with those. What exactly am I being teased with. It's beautiful.

JL

Especially with Palisander Rio sides and back.

jzagaja, Did you make that SEOS baffle? Or could this be a Erich hidden treasure.

This is a first product of Autotech without my participation.

I just thought I would check in and say hello to all here, who are part of the E-Wave world. I'm also a member of AudioKarma, and witnessed the latest display of female hormones directed at Erich, by one or two members. I just thought I would offer my apologies and check you folks out.

I have been away from the diy scene for a few years now, and primarily returned to finish up a pair of Frankenstein monsters that I walked away from in 2008. The project has been sitting in the corner of my basement shop ever since. But I'm self-employed and use my basement for my business, so I have to eyeball them every time I go to work. To make a long story short, I finally decided to get off my keyster and put them to bed.

I left about the time Zilch started up his EconoWave project, so I had no idea of it until I returned to 'diyaudio.com' last month. And after wading through the first 75 pages of Zilch's slightly less than 1000 page thread on the E-Wave A-K, I quickly saw the possibilities of applying his principles to my Hexagon speaker project.

So that is what I have been doing for the last several weeks, when I read about that little issue yesterday.

Anyway, if everyone here is as considerate as Erlich and a few others, I think I will stick around for awhile, and learn something. I'll start out by wading through the pages of this thread. But I will naturally have some questions as I go along.

And here is my first question. Are you all still working with the basic circuits that Zilch worked out? And will the new waveguide of yours require any changes? A link, or links, explaining all this would be wonderful.

So with that, I'll make this a regular place to visit for the future. And my thanks to you all up front.

Hi jlk103144,

Crossovers and speaker designs are being worked out currently (I'm trying to get up the energy to wire up a crossover for one using SEOS12 tonight). They will still be based on the general topology that Zilch settled on (actually based on the crossover topology devised by Wayne Parham), though I'll probably add a few tweaks and options. Others are working with that and with other size SEOS waveguides, though nothing published yet (except for a design using SEOS15 and TD15M).

Not tested out yet, but:
It seems very probable that the SEOS12 (the one to be mass-produced in plastic) will directly work with designs and crossovers that used the original JBL/Pyle/Dayton econowave waveguides - with a bolt-on-to-screw-on adaptor, the length of the waveguides comes out the same (so time offset should match) and both are constant directivity (so on-axis HF response should be similar). Only thing left to find out is whether the low end responses of the waveguides match up well enough.

I was thinking precisely the same thing.

I do have a question here. If the sensitivity of the DE 250 is actually 108.5 dB, I wonder why the response curve is rated so much lower? Is this due to the microphone being a good distance from the driver? Or was the microphone situated right in front of it?




And thanks for the heads-up bwaslo.

Well, it looks like Mr. jzagaja let the secret out a bit early! But that's okay.

As mentioned about mid way through this whole project, if we get some really good designs, and I get permission from the designer, I'll try to get them turned into some really nice looking speakers. A few months ago Autotech and I went back and forth for quite some time trying to figure out the best way to make the baffle work for multiple purposes. This is the design we settled on. I asked them to make the baffles and I'll be getting all the other stuff that goes with them. Obviously they're not going to be the cheapest solution, but they'll sure look good.

The model posted is for 10" woofers. Eventually there will be a flat pack available and maybe a completed speaker. I've asked jzagaja to help create the first version for this 1 piece baffle speaker design. He's very good and I expect these to be extremely nice. I'll go into driver details and other stuff a little later.

Ill give ten dollars cold hard cash for these, EACH!

Erich for President, nuff said.

This is actually Step #2. Even though it will be a bit more money, I think it allows DIY guys to take things up a notch and really create something interesting. And really I don't think the price will be out of the realm of many DIY guys.

Step #3???? Well THAT'S the 'hidden treasure' if all goes well. But it will be kept secret for a little while longer. It can't be completed until more of the 'group buy money' is back in the pot.



More info later. Landscaping season has started and I'm going to be getting a little more busy. I have part of a job to finish up tomorrow morning, but I've actually decided to go do it tonight instead. It's a well lit vacant commercial location, but doing it tonight will give me the rest of the day off tomorrow. So I'm pulling a half day 3rd shift! I guess that's what you'd call it.

OK, here's results of a first SEOS12 design. As built from a PCD design (using OmniMic measurements). The woofer is the (very soon to be announced) Dayton Audio "Designers' Series" 10inch. The cabinet is an old Advent Legacy II box.

Measured in my sitting room from about a meter away. Not too bad.




I'll get out details (schematic, parts list, PDC curves) tomorrow... after I try to fix a washing machine here. Domestic issues need to come first.

I'm wondering if maybe I did the crossover too low. Maybe the off-axis might be smoother and the directivity better matched if crossed up closer to 1800Hz?

edit: I should point out that the curves are measured with 6th octave smoothing (to match what Zilch used, and to approximate ear critical bandwidths).

BWaslo's a crazy man and conquering the value series. Or at least I believe that's what he was hoping for with this design.

Bill, it didn't take you long to put that together, but I'm sure you'll be tweaking it for a little while though.

If you think those other cheaper CD's I have will work crossed up at the higher level, I'll try to bring them out tomorrow or Sunday and really knock this one into the value series.

I don't mean to be rude but....how the hell are we supposed to order anything and design around it when you drop something new a couple weeks later? At least the freakin' iWhatever would go a year between revisions!

So....does how does the deltalite 2510 fit in there? I've got two...

If I didn't know better, I would swear that to be the product of an epoxy resin, poured into a silicone mold. Either that, or a polyurethane resin.

If that is the case, each of those 'pours' will cost a little bit, because the resin is expensive; especially if it is epoxy.

Personally I prefer the urethane resin, because it is easy to brush on a nice custom outer layer first, and then pour the generic colour on top of that. Using a nice Bronze, or brass effect, is just stunning to look at. I'll see if I can find an example.

Its fiber glass and it will easily cost over $100 because its hand made in poland by autotech then put on a pallet order done by eric