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Hey guys...we need a little rallying here... - Page 235

post #7021 of 9857
Wayne's waveguide is a little different, but I'd think most difference would be related to xo voicing. The waveguide differences would be pretty slight I imagine. I think Wayne voice's his cross overs for flat/sloping power response, where most of the SEOS designs are voiced for flat direct sound. I could be wrong about that though, I haven't followed Wayne's methods closely.
post #7022 of 9857
Thread Starter 
i would think simple tone controls would make most if not all of those differences moot.
post #7023 of 9857
Quote:
Originally Posted by tuxedocivic View Post

Wayne's waveguide is a little different, but I'd think most difference would be related to xo voicing. The waveguide differences would be pretty slight I imagine. I think Wayne voice's his cross overs for flat/sloping power response, where most of the SEOS designs are voiced for flat direct sound. I could be wrong about that though, I haven't followed Wayne's methods closely.

Quote:
Originally Posted by LTD02 View Post

i would think simple tone controls would make most if not all of those differences moot.

that wasn't the question
post #7024 of 9857
They would be tough to compare because they all use different parts. They've all been designed by extremely good speaker designers so you can't go wrong with any of them.
post #7025 of 9857
If you are wrestling with a tight budget, don't forget shipping on the AE woofers.

I think Erich had some black glossy resin SEOS-15 waveguides at one point, though I am not sure if they are still available or not.

The same crossover can be used for a given waveguide, regardless of which material the waveguide is made from. However, I also don't think there is much reason to prefer one material over another, unless you want a matte finish (plastic) or custom color (fiberglass) and don't want to paint it.

-Max
post #7026 of 9857
Thread Starter 
"that wasn't the question"

what was the question? :-)

i was simply suggesting that differences in frequency response are easily changed, so don't represent a fundamental major difference in design.

things like controlled directivity or not are not so easy to change, so that is the kind of thing that i would characterize as a significant difference.
Edited by LTD02 - 3/1/13 at 12:32am
post #7027 of 9857
Quote:
Originally Posted by LTD02 View Post

"that wasn't the question"

what was the question?

A few posts ago I was asking if anyone had been able to compare 3pi or 4pi speakers face-to-face with a comparable SEOS design. Has any 3pi or 4pi owners heard a SEOS speaker?
post #7028 of 9857
Thread Starter 
not sure if it helps or not dh, but here are some measurements of the pispeakers if you haven't already seen them:

http://www.pispeakers.com/Measurements/
post #7029 of 9857
Is there any reason people dont use perfboard for their crossover base? I think ima use that this time.

Also, im finally getting the ball rolling with the Delta12LFA design. Once i cut wood there will be a build thread. Crossover gurus take a peek @ my layout and see if inductor orientation and overall layout is kosher.....

F3C3EA95-CD10-40B6-830E-2C6C15A97D3C-4254-0000071B87294269_zpsada380fb.jpg
post #7030 of 9857
Quote:
Originally Posted by LTD02 View Post

not sure if it helps or not dh, but here are some measurements of the pispeakers if you haven't already seen them:

http://www.pispeakers.com/Measurements/

Thanks. I was also hoping for any direct listening experiences between Pi and SEOS speakers with comparable drivers.

Thanks,
Darrell
post #7031 of 9857
I own a set of 4Pis.
Matt (mtg90) will come over to my place later this month when the subs he is building for me are ready. It's probably going to be too hectic for critical listening but then Matt maybe uniquely qualified to pick up the differences. I do suspect that Wayne's speakers are voiced differently , not so much because of the wave guides but because of his approach to the crossover design.
post #7032 of 9857
Quote:
Originally Posted by zheka View Post

I own a set of 4Pis.
Matt (mtg90) will come over to my place later this month when the subs he is building for me are ready. It's probably going to be too hectic for critical listening but then Matt maybe uniquely qualified to pick up the differences. I do suspect that Wayne's speakers are voiced differently , not so much because of the wave guides but because of his approach to the crossover design.

That would be great. Which drivers are in your 4pis? Also will your new subs be flanking subs. If so they may help to get the 4pi response closer to what the SEOSs are designed to.
post #7033 of 9857
Quote:
Originally Posted by dheflin83 View Post

That would be great. Which drivers are in your 4pis?

JBL 2226H woofer and DNA-360 compression driver.

these are not going to be implemented as flanking subs, at least not in the way Wayne means it
Edited by zheka - 3/1/13 at 8:11am
post #7034 of 9857
Looks good NicksHitachi !

Where did the thread on diysoundgroup go for this one? Can't find it. XO looks right from what I remember though. Tweeter lead goes out after that parallel CR right? A few people have put it in the middle of those series notches.
post #7035 of 9857
perfboard is relatively thin and might not be strong enough to hold up the weight of large coils.
post #7036 of 9857
Quote:
Originally Posted by tuxedocivic View Post

Looks good NicksHitachi !

Where did the thread on diysoundgroup go for this one? Can't find it. XO looks right from what I remember though. Tweeter lead goes out after that parallel CR right? A few people have put it in the middle of those series notches.

Yeah, like this:

Delta12LFA_PIC.png 99k .png file

The LFA thread is in the "discussions" area. Hopefully it'll get moved to the build area once I've documented it.....
post #7037 of 9857


More like this ?

Your drawing shows the negative lead tying in before the resistor on the first notch. That layout has confused two other people I know of. I hate to know how many other non-posters have wired that wrong.

I still can't find the thread. I know I saw it before. I'm looking forward to your impressions on this one. I really like the idea of using the LFA.
post #7038 of 9857
Yep your absolutely right. I goofed. redface.gif

I was trying real hard to scrunch it all together so I could point to point it all, but I may run a solid copper lead down middle for the negative.......

Here's the LFA thread.
post #7039 of 9857
Quote:
Originally Posted by LTD02 View Post

i would think simple tone controls would make most if not all of those differences moot.
Would that not depend on the choices made during voicing? I would imagine you would need something more sophisticated than simple tone controls. If I were to hazard a guess, I would think that a close match would require the use of a parametric eq, or at the very least 1/3 band eq.
post #7040 of 9857
Has anyone started building a definimax/alpha zephyr 12 yet? I'd love to see some progress pics!
post #7041 of 9857

Received my package from Eric...so much styrofoam! Properly packed and everything came in perfect shape. One suggestion though, put the crossover schematic in the same box as the crossover components. I thought you didn't include it until I found it in the bottom of the box. The Delta Pro is no joke, this thing is beefy. Going to Home Depot tomorrow and hopefully start cutting some wood.

post #7042 of 9857
Quote:
Originally Posted by Mrkazador View Post

Received my package from Eric...so much styrofoam! Properly packed and everything came in perfect shape. One suggestion though, put the crossover schematic in the same box as the crossover components. I thought you didn't include it until I found it in the bottom of the box. The Delta Pro is no joke, this thing is beefy. Going to Home Depot tomorrow and hopefully start cutting some wood.

Looking forward to progress shots! smile.gif
post #7043 of 9857
Quote:
Originally Posted by Mrkazador View Post

Received my package from Eric...so much styrofoam! Properly packed and everything came in perfect shape. One suggestion though, put the crossover schematic in the same box as the crossover components. I thought you didn't include it until I found it in the bottom of the box. The Delta Pro is no joke, this thing is beefy. Going to Home Depot tomorrow and hopefully start cutting some wood.

Nice! I hope you are going to start a build log as I am especially interested to see your progress since we both ordered Tempests at about the same time! I will be cutting wood tomorrow!  Side note my crossover schematic came in the crossover component box!

post #7044 of 9857
Quote:
Originally Posted by Mrkazador View Post

Received my package from Eric...so much styrofoam! Properly packed and everything came in perfect shape. One suggestion though, put the crossover schematic in the same box as the crossover components. I thought you didn't include it until I found it in the bottom of the box.

I usually do put them in the same box as the crossover. I forgot to on yours and didn't want to dismantle the whole package to get it in there, so I just slid it in the box. Hey, you found it though! biggrin.gif
post #7045 of 9857

Didn't know you were putting it in there already. I'll be building a sealed version of the Tempests and will create a thread with my progress. Definitely will be some pictures. I also received my parts for the one pi surrounds so that will be included too. I will be changing the enclosure for the one pi to a sealed slanted one. Should be interesting...

post #7046 of 9857
Quote:
Originally Posted by HFGuy View Post

perfboard is relatively thin and might not be strong enough to hold up the weight of large coils.

Unless they're several pounds, not a problem, and even so proper mounting would take care of it.

The issue for me is that it's so darn cheap looking.
post #7047 of 9857
While I don't think it will break but put a few pounds of coils on it and the flexing is less than reassuring.
post #7048 of 9857
Quote:
Originally Posted by NicksHitachi View Post

Is there any reason people dont use perfboard for their crossover base? I think ima use that this time.

Also, im finally getting the ball rolling with the Delta12LFA design. Once i cut wood there will be a build thread. Crossover gurus take a peek @ my layout and see if inductor orientation and overall layout is kosher.....

F3C3EA95-CD10-40B6-830E-2C6C15A97D3C-4254-0000071B87294269_zpsada380fb.jpg

Nick is in the "SEOS House"!!! tongue.gif

Looking forward to your build. Please post a build thread.
post #7049 of 9857
look what i found in the latest PE catalog
post #7050 of 9857
Quote:
Originally Posted by Java View Post

Quote:
Originally Posted by NicksHitachi View Post

Is there any reason people dont use perfboard for their crossover base? I think ima use that this time.

Also, im finally getting the ball rolling with the Delta12LFA design. Once i cut wood there will be a build thread. Crossover gurus take a peek @ my layout and see if inductor orientation and overall layout is kosher.....

F3C3EA95-CD10-40B6-830E-2C6C15A97D3C-4254-0000071B87294269_zpsada380fb.jpg

Nick is in the "SEOS House"!!! tongue.gif

Looking forward to your build. Please post a build thread.

Wuddup Javajava!

I got something different cooking and worked about 8hrs on it this weekend. Ill get a build thread goin in next couple days....

Its hard to fathom how big 2.5ft cubed is for a main speaker until you see it.... *hint*
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