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Hey guys...we need a little rallying here... - Page 81

post #2401 of 7512
Quote:
Originally Posted by omegaslast View Post

To be blunt i think too many bites are being taken without considering whether or not they can be chewed

When you become a manufacturer of drivers who's responsible for all of them? When one breaks who would i contact for repair? is there a warranty? Are these drivers made here or in china? if china screws up a huge batch do you want to get sunk like kevin haskins did? etc. DE250 works for us already because all the infrastructure is already there.

Of the $128 parts express charges for a DE250:
$30-$40 of that is parts express "profit" (though they use it to pay all sorts of people)
X amount is the cost of the driver to B&C
Y amount is the cost of B&C employees
Z amount is profit

So obviously youre cutting out the dealer (parts express), which is nice, but also shouldering all the costs of infrastructure

I think most at this point were completely ready to pay the money for a DE250, or X or Y driver, and were hoping to save money by buying cheap cement SEOS and cheap flat packs. These dont require the same sort of tech support as a driver does and are far less complicated. Once those are rolling out to customers and everythings smooth sailing then yeah it would be cool to have a super cheap but high performing compression driver to bundle with a plastic SEOS-12 and possibly a flat pack that would allow people to have insane performance for $300-$400 a speaker (including crossover and 12" woofer).



I'll be a little blunt as well.

There aren't too many bites being taken without considering whether or not they can be chewed'. I'm simply making sure every aspect gets covered.

There's a lot of waiting time between prototyping, getting things made and shipped, finding cheaper methods ect. So why wouldn't I explore other things that the group might want during that time? I run a landscaping business....things are pretty slow right now, so I just turned my sites on other related things.

I got the idea prototyped, and it's available for purchase right now. In the spare time I looked for cheaper methods. Those poured models will be available on the next pallet from Poland. I also looked into an even cheaper method which I'm doing right now.

There's a lot more going on behind the scenes than you might realize. I didn't say there was a compression driver specifically designed for the SEOS. I just said it should be as good and hopefully better than the DE250 and should be cheaper. It's nothing like what Kevin did. These don't cost $200+ with a minimum order of 250 units. There's not much that can go wrong with CD's. Replacement diaphragms, phase plugs, whatever. I think you're looking into this much more than needed right now. I hope you don't think I haven't thought about all the things you talked about.

It's not like anyone will be forced to buy the CD's that are going to be tested. I'm just getting samples for people to look at. If something turns out great, that's a plus.
post #2402 of 7512
Quote:
Originally Posted by omegaslast View Post

edit: I wonder if you could get someone like CHT to bank roll a plastic SEOS-12 + cheap compression driver assembled 12" home theater speaker (think edcinema but even better) and then sell it for $600-$700. Actually elemental designs could do it as well.. I dont care if they make a lot of profit off of it, its just absurd that the edcinema is the BEST high efficiency speaker for home theater out there nowadays unless you want to buy a pro-audio speaker from QSC or JBL

There's no need for another company to bank roll the plastic SEOS-12. I'm not sure they would or could anyway.

Plus the ball is already rolling, I just haven't been prodded for the info. I'm taking on the project all by myself because if there's a failure with any of this, I want it to be on my shoulders, and no one else's. Oddly enough, I was wiring money from the bank about 3 hours ago. I hoped this portion of the project would have been done by now, but I lost about a month due to things beyond my control.



I promised earlier in the year to get this project 100% completed at a price that fits different budgets, and that's what I'm trying to do. Here's what I can promise, because it's what I've been working hard to get done with the SEOS:


Complete speakers specifically made for the home theater environment in plenty of price ranges. Designs done by some of the best in the DIY world. Trust me here, they're coming. Full range and surround style. Some will be extremely affordable.

Other complete speakers that I can't mention right now.

Complete speaker kits with or without flat packs.

Fiberglass units from 6 - 18+.

Poured units from 6 - 18 (eventually).

Cheap 12" waveguide models.

1 piece front baffles.



I've met some of the nicest and smartest people this past year while working on this project. Some post right on these boards nearly every day, others mostly lurk. The good news is that it's almost done. I think Zilch would be proud of what he started.
post #2403 of 7512
That's great to hear!

JSS
post #2404 of 7512
I'll add some comments on my opinion.

First, I am very happy to see the SEOS waveguide come to fruition! Major props to Erich!

I think the biggest key to success in all this work is to get some complete designs in the public arena. That means some completed speakers need to be made using the SEOS. I am pretty confident that some of the popular configurations with be knocked out, but as Zaph use to say, if you want something unique to your situation, that is where the Y in DIY comes in. Zaph showed how to do it in his lengthy thread.

Let us not forget though that the baffle of your box factors into crossover design as much as anything else. So designs need to include baffle dimensions and whether that includes roundovers or not.

I'd love to see a flatpack for a popular SEOS speaker. I'd build one, for the DE205/TD12M combo, and do my best to do a xo design.
post #2405 of 7512
Quote:
Originally Posted by AudioJosh View Post

I'll add some comments on my opinion.



Let us not forget though that the baffle of your box factors into crossover design as much as anything else. So designs need to include baffle dimensions and whether that includes roundovers or not.

.

This will certainly ignite some fires, but I'll be building mine sans box!
post #2406 of 7512
Quote:
Originally Posted by Erich H View Post


There's no need for another company to bank roll the plastic SEOS-12. I'm not sure they would or could anyway.

Plus the ball is already rolling, I just haven't been prodded for the info. I'm taking on the project all by myself because if there's a failure with any of this, I want it to be on my shoulders, and no one else's. Oddly enough, I was wiring money from the bank about 3 hours ago. I hoped this portion of the project would have been done by now, but I lost about a month due to things beyond my control.

I promised earlier in the year to get this project 100% completed at a price that fits different budgets, and that's what I'm trying to do. Here's what I can promise, because it's what I've been working hard to get done with the SEOS:

Complete speakers specifically made for the home theater environment in plenty of price ranges. Designs done by some of the best in the DIY world. Trust me here, they're coming. Full range and surround style. Some will be extremely affordable.

Other complete speakers that I can't mention right now.

Complete speaker kits with or without flat packs.

Fiberglass units from 6 - 18+.

Poured units from 6 - 18 (eventually).

Cheap 12" waveguide models.

1 piece front baffles.

I've met some of the nicest and smartest people this past year while working on this project. Some post right on these boards nearly every day, others mostly lurk. The good news is that it's almost done. I think Zilch would be proud of what he started.

Hey Erich,

Take your time. All good things are worth a bit of patience. To be blunt , I'm surprised to hear you're working on getting a new CD to the market - and here I thought you were only a flat-pack one trick pony! . I'm glad to see you have the disposition to not let the minority of people that have beat you for product, and the comments from the peanut gallery, turn you away from these projects.

Everyone needs to simply wait and see what comes of all of this. As you said, no one will be required to make a mandatory purchase .
post #2407 of 7512
OK, here it is. I replaced the homebrew waveguides with SEOS15. Not an easy job, had to plug the opening for the homebrew and them mill the opening for SEOS.



Currently using MiniDSP crossover (still with the settings that I used with the homebrew), will be redoing that for the new waveguide maybe tomorrow. Driver is DE250. Woofer is TD15M.

I did some measurements for anyone who plans to use the same driver and horn set and wants to design a passive crossover in PCD. Here are the files:
http://libinst.com/junk/TD15M%20SEOS15/Tweeter.zma
http://libinst.com/junk/TD15M%20SEOS15/Woofer.zma
http://libinst.com/junk/TD15M%20SEOS...0on%20axis.frd
http://libinst.com/junk/TD15M%20SEOS...0on%20axis.frd
The CTC as I mounted them is 12". The settings to use in PCD for offsets are:
Woofer Vertical Offset = -0.305m
Woofer Z offset = 0.075m (I think.... I should have done my summing measurement further away).
Tweeter is at reference (0 offset).

Sorry, no polars, room is small, speaker is HEAVY and it's COLD outside!

p.s. -- no laughing at my speaker stand. I wanted to get the waveguide up to ear level and I've had enough of working in the cold garage for now...
post #2408 of 7512
Cool! Thanks for the frds and zmas. Will play around with them sometime to see how these behave.
post #2409 of 7512
Looking good Mr. Bwaslo. How hard was it drilling the holes for the waveguide?


Guys, Bill and I tested about 10 or so different compression drivers yesterday. I'll post up more info later.

Some were good, some were not very good. BUT, we have about 5-6 models that did well enough to justify a larger purchase. One could be considered a dead on duplictate of the DE250! Another was a duplicate, but didn't go quite as low.....which would be great for the SEOS-10 or under.

And then a beast of a 1" compression driver about twice the size of the DE250. It can actually be crossed lower.......maybe with the SEOS-18! It also extended higher as well due to a titanium diaphragm. Not quite as smooth, but I think it can be worked on to get better performance. The only issue was a screw on adapter. I'm going to see if we can get it with a bolt on base.

I think Bill said it could be crossed under 900hz. Maybe under 800hz?

I'll post some graphs later.
post #2410 of 7512
I forgot to mention that Bill also worked up some speakers using a really neat little compression driver on an elliptical horn. I found that model a few months ago and have 100 coming soon....like $15 with the neo magnet CD. The woofers he used were the buy out $9 Aurasound 6" woofers from PE.

I think a sealed version would make for some nice surrounds. His were more like small floor standers tuned in the high 30's. They sounded great.

That's another thread though.
post #2411 of 7512
Quote:
Originally Posted by bwaslo View Post

OK, here it is. I replaced the homebrew waveguides with SEOS15. Not an easy job, had to plug the opening for the homebrew and them mill the opening for SEOS.



Currently using MiniDSP crossover (still with the settings that I used with the homebrew), will be redoing that for the new waveguide maybe tomorrow. Driver is DE250. Woofer is TD15M.

I did some measurements for anyone who plans to use the same driver and horn set and wants to design a passive crossover in PCD. Here are the files:
http://libinst.com/junk/TD15M%20SEOS15/Tweeter.zma
http://libinst.com/junk/TD15M%20SEOS15/Woofer.zma
http://libinst.com/junk/TD15M%20SEOS...0on%20axis.frd
http://libinst.com/junk/TD15M%20SEOS...0on%20axis.frd
The CTC as I mounted them is 12". The settings to use in PCD for offsets are:
Woofer Vertical Offset = -0.305m
Woofer Z offset = 0.075m (I think.... I should have done my summing measurement further away).
Tweeter is at reference (0 offset).

Sorry, no polars, room is small, speaker is HEAVY and it's COLD outside!

p.s. -- no laughing at my speaker stand. I wanted to get the waveguide up to ear level and I've had enough of working in the cold garage for now...

That white waveguide on black baffle.. hurts my eyes!
post #2412 of 7512
Quote:
Originally Posted by Erich H View Post

And then a beast of a 1" compression driver about twice the size of the DE250. It can actually be crossed lower.......maybe with the SEOS-18! It also extended higher as well due to a titanium diaphragm. Not quite as smooth, but I think it can be worked on to get better performance. The only issue was a screw on adapter. I'm going to see if we can get it with a bolt on base.

I think Bill said it could be crossed under 900hz. Maybe under 800hz?

If it's more capable than the De250, i don't see why not. doesn't geddes cross his de250 around 850hz in the summa?
post #2413 of 7512
Quote:
Originally Posted by Eternal Velocity View Post

If it's more capable than the De250, i don't see why not. doesn't geddes cross his de250 around 850hz in the summa?



I'm not sure where Geddes crosses the DE250 at with the OS. The SEOS-18 will allow for the driver to be crossed lower than the OS, but the DE250 can't really go any lower than that. The 1" compression driver I'm talking about is about twice the size of the DE250 and would allow for an even lower crossover point.
post #2414 of 7512
Quote:
Originally Posted by Eternal Velocity View Post


If it's more capable than the De250, i don't see why not. doesn't geddes cross his de250 around 850hz in the summa?

There's always going to be differing opinions on how low a CD can be crossed. For some it'll based on frequency response and for others it might be power handling and harmonic distortion. Both are dependent on extraneous factors such as listening levels or the slope of the filter. Decisions best left for the designer.........Dr. Geddes had no problem choosing, nor should you.
post #2415 of 7512
Quote:
Originally Posted by Eternal Velocity View Post

That white waveguide on black baffle.. hurts my eyes!

Well, it does look better than in the photo (crummy phone camera). And doesn't show at all with the grill on, anyway.


I gave some thought to spray painting the waveguide black, but laziness won out.
post #2416 of 7512
Erich's not kidding about the new driver matching the DE250. Here are the curves, measured one after the other in the same setup. Black is DE250, Red is the new driver. I'd almost suspect the supplier sent actual DE250s with the labels removed.....
post #2417 of 7512
Geeze Bill, you spoiled the fun!!! I was going to post a photo showing 3 completely different models and ask who could pick the DE250!!! Party pooper! Couldn't you have waited a few minutes?????

Here it is: The Holy Grail has been found!

post #2418 of 7512
Are you using any CD compensation or other crossover components to generate those curves?

Are you going to work up a passive design for the TDM15/DE250/SEOS15 combination?
post #2419 of 7512
Quote:
Originally Posted by mobeer4don View Post

Are you using any CD compensation or other crossover components to generate those curves?

Are you going to work up a passive design for the TDM15/DE250/SEOS15 combination?

There's no crossover network on those curves.
post #2420 of 7512
Any prices for the above CD's yet Eric?
post #2421 of 7512
I've got to look into packaging, but the one on the bottom should be at least 50% less. Not sure about the one on the top.

There are others that tested good for crossing to a 10" woofer. I haven't posted anything on those yet, but they should be around $30 or less. I received so many things that I can't recall pricing on everything.

I have to go out and do some salting right now......we got just enough snow for customers to start calling.
post #2422 of 7512
Great work guys. I was skeptical about finding a compression driver, but if anyone can pull it off it is Erich.

Do you guys have exit angle specs? What is the voice coil diameter and diaphragm material? Are replacement diaphragms available?

I've been quite busy lately. I haven't had a chance to do anything with my SEOS-15's yet. My plan is to use the TD15M, but I won't have those for a bit. I could build a box and design something for the 2226Js and swap them in temporarily. Those are the only 15's I have right now.

I'll play around with those measurements Bill. Are you running them with an active DSP? Any feedback compared to your old waveguides?
post #2423 of 7512
Oh, GAWD, they're awful. Screechy, nasal, sound like an old AM radio playing through a kazoo.
--

Ok, that was just kidding to get Erich's blood running. No, they are actually amazingly smooth, and now that I have the crossover dialed in, they match up remarkably well with the TD15Ms. No audible evidence at all of where the crossover point might be. Very detailed and clear, don't give away their room location either. I'm waiting for the wife to go out this afternoon so I can do the manly thing and let them stomp really loud. If anyone is out in the Cincinnati/Dayton area and wants to hear some, drop me a PM.

Yup, using MiniDSP, a 50W Tripath amplifier on the waveguides, UCD180s on the TD15Ms.
post #2424 of 7512
Im thinking of ordering the RCF L8S800 8" woofers and measure 2 side by side they are truncated. I am trying for a more compact speaker height wise for the crowd that wants a center channel. I figure if they are a flop i'll put them in a surround. I put them in winisd and ported the measured pretty low and with 2 they should come in at 96db(i think) I got an Omnimic for xmas and still haven't played with it. Thanks to Bill for putting up the frd.
Bill do you have the frd for the seos 12 that is what I want to try and design for at least it will get me some rough ideas in the crossover program until I can get them and measure on my baffle.
Let me know if you guys think I'm way off base on the RCF's.
post #2425 of 7512
here is the win isd graph green ported in 1.6 ft3 with a 1x16 slot port yellow sealed in .8 ft3
LL
post #2426 of 7512
Mikey, I'm hoping to do a center channel type set up with 2 woofers as well.

Coctostan I think the exit angle is the same. For some reason I remember 14 or 14.5, but I could be wrong.

Yes, there will be replacement diaphragms for a good price.


One thing I might have to do to pull all this off is get a name that sounds more "audio related". I've been using my landscape business name and always seem to get a funny look. Uh.....well......it's for outdoor audio....yeh that's it. Most of these places won't talk to you without a business of some sort. So I've been lucky in that aspect too.


Quick little note: Cheap SEOS-12 project has been initiated. Keep your fingers crossed please! It's time for me to start selling some of my audio stuff off so I can bring the whole project together now.
post #2427 of 7512
The SEOS12 Frd file is here:
http://libinst.com/junk/Oct29Meas/SEOS12.frd

What I don't have is the ZMA file for it (didn't measure) or any relative z-axis offset with any woofer, though.
post #2428 of 7512
Quote:
Originally Posted by bwaslo View Post

Oh, GAWD, they're awful. Screechy, nasal, sound like an old AM radio playing through a kazoo.
--

Ok, that was just kidding to get Erich's blood running. No, they are actually amazingly smooth, and now that I have the crossover dialed in, they match up remarkably well with the TD15Ms. No audible evidence at all of where the crossover point might be. Very detailed and clear, don't give away their room location either. I'm waiting for the wife to go out this afternoon so I can do the manly thing and let them stomp really loud. If anyone is out in the Cincinnati/Dayton area and wants to hear some, drop me a PM.

Yup, using MiniDSP, a 50W Tripath amplifier on the waveguides, UCD180s on the TD15Ms.

I gotta find some time to put mine in a box.

I have an initial passive crossover design. It crosses around 1khz, but I'm not thrilled with the impedance. It should have nice power response with 3rd and 5th order BW slopes. I only played with it for about 15 minutes so I still have some work to do on it. Do you have any interest in giving a passive a try? Would you mind sending me your MiniDSP settings? I could try to target something similar.

Quote:
Originally Posted by Erich H View Post

Mikey, I'm hoping to do a center channel type set up with 2 woofers as well.

Coctostan I think the exit angle is the same. For some reason I remember 14 or 14.5, but I could be wrong.

Yes, there will be replacement diaphragms for a good price.


One thing I might have to do to pull all this off is get a name that sounds more "audio related". I've been using my landscape business name and always seem to get a funny look. Uh.....well......it's for outdoor audio....yeh that's it. Most of these places won't talk to you without a business of some sort. So I've been lucky in that aspect too.


Quick little note: Cheap SEOS-12 project has been initiated. Keep your fingers crossed please! It's time for me to start selling some of my audio stuff off so I can bring the whole project together now.

So it sounds like B&C just relabels theirs or are these Chinese knock-offs? Any chance you could get a B&C 15TBX100 knockoff?

Just call it SEOS Audio. That sounds like a Hifi company.
post #2429 of 7512
Quote:
Originally Posted by coctostan View Post


Just call it SEOS Audio. That sounds like a Hifi company.

+1

post #2430 of 7512
OK, here is a MiniDSP file I made for it, done by tuning it "live" not from modelling. Not including any EQ for below 800Hz, as that will be room and sub dependent. Probably should be crossed lower, but I was a little impatient and just started from the nominal crossover filters from before (around 1100Hz if I remember right). I'm using the pot on the tweeter amp to adjust its level, so you'll have to tweak the gains on your setup.

http://libinst.com/junk/TD15M%20SEOS15/setting.xml

I also did a quick passive design in PCD, haven't built it though (and I'm not positive that I have the z-offsets right), so use with caution. I didn't look up inductor resistances, just used guesses (they won't be critical except for the low bass if you port the box.... I'm sealed). Again, I didn't mess with EQ or compensation below 800Hz, as the room is getting into things down there in the measurements.

http://libinst.com/junk/TD15M%20SEOS...%20Notches.csp
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