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Hey guys...we need a little rallying here... - Page 250

post #7471 of 9844
Quote:
Originally Posted by LTD02 View Post

are there any known distortion measurements of the deltalite ii 2512 / seos12 / dna360 / bwaslo crossover combination anywhere?

grazie.

If there are, it would have to be compared to something measured at the same time under the same conditions. Distortion is a toughie.
post #7472 of 9844
Quote:
Originally Posted by tuxedocivic View Post

If there are, it would have to be compared to something measured at the same time under the same conditions. Distortion is a toughie.
HolmImpulse does distortion, which can be seen as THD or as any component from 2nd to 10th harmonic. You have to convert the distortion dB level relative to the output SPL to get a percentage, using these conversion factors:

-60dB = 0.1%
-55dB = 0.2%
-50dB = 0.3%
-45dB = 0.5%
-40dB = 1%
-35dB = 2%
-30dB = 3%
-25dB = 5%
-20dB = 10%
-15dB = 15%
-10dB = 30%
- 5dB = 55%
post #7473 of 9844
Question for you all out there, what is the diameter of the ports on the fusion 12 tempest?
post #7474 of 9844
Hey Bill, my designs have been measured with HolmImpulse, but with varying voltages, mic distances, gating, outdoors/indoors, etc. Wouldn't that matter? And doesn't the measurement setting have to be very quite. I usually go outdoors. Maybe I'll pull up some of my old measurements and take a look, but usually I ignore distortion based on the randomness of measurement processes. Usually high sensitivity designs are really low distortion anyways.
post #7475 of 9844
Quote:
Originally Posted by tuxedocivic View Post

Hey Bill, my designs have been measured with HolmImpulse, but with varying voltages, mic distances, gating, outdoors/indoors, etc. Wouldn't that matter?
It would. Generally you want to do two measurements as far as distortion goes, small signal and full power. Small signal is the usual 1w/1m, full power is at the Pe limit or 10% THD, whichever is lower. In some cases you won't hit 10% THD at Pe, but if you do hit 10% below Pe that becomes your de facto maximum power/maximum SPL figure.
post #7476 of 9844
Ya I suppose if the mic was at 1m and 2.83V and a quite environment each time, then the HD measurements would be somewhat comparable. But to answer LTD's question, I'm betting not. I know I'm guitly of usually just turning up the volume to "about good" and rarely bother to check the voltage unless I'm measuring sensitivity. And then the full power HD measurements, which I've never done, would be even more work to do right.
post #7477 of 9844
The more I see it, the more I like the Celestion buyout kit. 98db sensitivity is nice.

My mind refuses to want to use a 15" speaker that can't reach the low 20s at will though.
post #7478 of 9844
Quote:
Originally Posted by bhazard View Post

The more I see it, the more I like the Celestion buyout kit. 98db sensitivity is nice.

My mind refuses to want to use a 15" speaker that can't reach the low 20s at will though.
Use them for surrounds wink.gif
post #7479 of 9844
Space limited. Its a tight squeeze at 14.5"w as it is.

They end up costing the same as the 8" kits if you have the space for them however, which is awesome.
post #7480 of 9844
I was actually mostly kidding, but it's incredibly awesome that you seem to have considered a similar idea for long enough to measure the space. biggrin.gif
post #7481 of 9844
Quote:
Originally Posted by antisuck View Post

I was actually mostly kidding, but it's incredibly awesome that you seem to have considered a similar idea for long enough to measure the space. biggrin.gif

I have TD12X speakers as my front AND side surrounds smile.gif
post #7482 of 9844
Quote:
Originally Posted by bhazard View Post

That Celestion buyout kit is a great price. There's no flat pack box to handle that size though for us shoddy woodworkers.

I can get some flat packs made up for the 15" Celestion model if there was enough demand. They also perform good in a larger ported enclosure, but it would be pretty big. The sealed is only 2.5 cuft and they can handle some pretty good power and put out some serious volume. If you have the room, these are a no brainer, especially for the crazy price.
Edited by Erich H - 5/15/13 at 4:40pm
post #7483 of 9844
Quote:
Originally Posted by cuzed2 View Post

Erich,

This one sounds really good! Have there been any thoughts (advantages) of pairing it with the 15" waveguides?

(Also; did you get my mailing, check and SEOS 3D printed emblems?)


I did get your package and was going to send you an email this week. The emblems look great. I like how they're raised and not just flat. They'll look perfect on which ever speaker I end up with in the end. Thanks a lot for those, I can tell you spent time making them look nice and appreciate that.

I also wrote down your $20 donation and will get that to Bill the next time I see him.
post #7484 of 9844
Quote:
Originally Posted by Erich H View Post

I can get some flat packs made up for the 15" Celestion model if there was enough demand. They also perform good in a larger ported enclosure, but it would be pretty big. The sealed is only 2.5 cuft and they can handle some pretty good power and put out some serious volume. If you have the room, these are a no brainer, especially for the crazy price.

If you can offer a pack for the 15" kits like that one and the Sentinel, I would think it would generate a lot of demand. It could possibly work for SEOS-15 and 15" woofer kits too. I already know I'll be building one of those in the future, and my 12s aren't even done yet.
post #7485 of 9844
Quote:
Originally Posted by Erich H View Post

I did get your package and was going to send you an email this week. The emblems look great. I like how they're raised and not just flat. They'll look perfect on which ever speaker I end up with in the end. Thanks a lot for those, I can tell you spent time making them look nice and appreciate that.

I also wrote down your $20 donation and will get that to Bill the next time I see him.

Thanks Erich!
As for the emblems - I still havea limited quantity to perfect the finish on. Also hoping to get some router templates made (from hardboard) for countersinking them.
post #7486 of 9844
Erich,

Is there a printable template or cutout with outer dimensions available for the SEOS 12? I want to CAD up a printable template if one is not available.
Apologies if I missed it somewhere .......thank you.
post #7487 of 9844
Quote:
Originally Posted by Erich H View Post

I can get some flat packs made up for the 15" Celestion model if there was enough demand. They also perform good in a larger ported enclosure, but it would be pretty big. The sealed is only 2.5 cuft and they can handle some pretty good power and put out some serious volume. If you have the room, these are a no brainer, especially for the crazy price.

i grabbed two of these drivers and cross over parts from PE today. couldnt resist.........



what the hell am i going to do with these? tongue.gif
post #7488 of 9844
how would these buyout 15's do in a 6cft ported box?

im thinking SEOSCALA maybe?.........
Edited by brian6751 - 5/16/13 at 6:29pm
post #7489 of 9844
Would love to see a design using the Silver Flute 6" 8-ohm woofer and the EOS-6 with a DNA-150. Would be a very nice and cost effective surround speaker. Too bad only Madisound carries silver flute.
post #7490 of 9844
I have a few 6.5" designs in the pipeline using the EOS-6, one set using a little more expensive woofer with equal sensitivity as the silver flute and one using a slightly less expensive woofer with a little lower sensitivity which may or may not happen depends on how busy I am at the time. There will also be an accompanying center channel design.
post #7491 of 9844
Distortion is based on the fundamental level, the standard is 90db. Everything else about the measurement setup makes the results variable. Taking a 90db measurement, and then taking higher level measurements (+5db, +10db) will allow you to compare and contrast what, if any distortion issues might be present, but comparing results not measured in exactly the same setup will not be completely accurate.
post #7492 of 9844
We need a name for the Bwaslo speaker that uses the 15" buy out woofer. Preferably something with a little humor.

The first person to blurt out 'Shag-Box-15' gets banned from the site. biggrin.gif
Edited by Erich H - 5/16/13 at 10:56pm
post #7493 of 9844
Quote:
Originally Posted by Erich H View Post

We need a name for the Bwaslo speaker that uses the 15" buy out woofer. Preferably something with a little humor.

The first person to blurt out 'Shag-Box-15' gets banned from the site. biggrin.gif

LOL. Fine then. I vote for stab'n cab'n. biggrin.gif
post #7494 of 9844
Dominator B15

Not to be confused with the Dominator MX-1
post #7495 of 9844
Quote:
Originally Posted by brian6751 View Post

i grabbed two of these drivers and cross over parts from PE today. couldnt resist.........

what the hell am i going to do with these? tongue.gif

I'm desperately fighting off the urge to order some as well. Ugh. eek.gif
post #7496 of 9844
Quote:
Originally Posted by djkest View Post

Would love to see a design using the Silver Flute 6" 8-ohm woofer and the EOS-6 with a DNA-150. Would be a very nice and cost effective surround speaker. Too bad only Madisound carries silver flute.

I got about 50% of the way there on that exact combo before I sold my silver flute 6 and 8" woofers. Now I have no SF drivers and I kinda miss them. They're nice for the money.
post #7497 of 9844
I know Noah asked this before, but I don't remember the response. Is anyone designing a speaker using the SEOS12 and the JBL 2206?
post #7498 of 9844
It's been done. check out diysoundgroup.com/forum
post #7499 of 9844
I'm obviously doing something wrong when I search. I searched again after your post and I still could not find a design using the SEOS12 and the JBL 2206
post #7500 of 9844
Oh shoot. Sorry man. I read it as 2226, which has been done. I don't know about the 2206. I don't recall any design for it.
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