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S.E.O.S.R. MEGA BUILD - Page 23

post #661 of 1502
Quote:
Originally Posted by cogeng182 View Post

Looks like EP4k has a decent price today. Here

If you guys aren't following this thread yet, I highly recommend that you do.

http://www.avsforum.com/t/1472180/do-amps-matter-kansas-city-blind-amp-comparison-gtg/0_100#post_23378839

Little birdies have been chirping some interesting preliminary impressions thus far!...

biggrin.gif
Edited by popalock - 6/1/13 at 11:52pm
post #662 of 1502
Thread Starter 
Thanks for the link Lock, don't know how I missed that one. It had me nervous for a minute, but it seems that the last listen spoken about in the last few posts has put me at ease biggrin.gif I know Andrew is talking about an east coast gtg to do the same, just trying to search out a venue. I wish the house was done, I'd do it there.

In other news, I'm excited, as Matt should have the gear this week and we can really start discussing enclosure specifics, etc. I am trying to be patient and hold out for the seos15 WG for the surrounds too, but the down time is killing me. Now that I'm reenvigorated, everyday seems like a week biggrin.gif
post #663 of 1502
Chop I am not on the same budget as you but after reading this I am very interested in building a 2 way design with dual 15's and a SEOS24. I of coarse would be using 18 Sound drivers such as NLW9300s or something similar from 18 Sound. I would also probably just go with a passive design. I like active but I dont like to turn on a bunch of amps for my listening pleasure. Although a plate amp would be nice.

Either way I look forward to your build in any form you go with.
post #664 of 1502
Quote:
Originally Posted by chrapladm View Post

Chop I am not on the same budget as you

Neither is Chop. biggrin.gif
post #665 of 1502
Lol
post #666 of 1502
Quote:
Originally Posted by chrapladm View Post

Chop I am not on the same budget as you but after reading this I am very interested in building a 2 way design with dual 15's and a SEOS24. I of coarse would be using 18 Sound drivers such as NLW9300s or something similar from 18 Sound. I would also probably just go with a passive design. I like active but I dont like to turn on a bunch of amps for my listening pleasure. Although a plate amp would be nice.

Either way I look forward to your build in any form you go with.

Wow, I just looked up the specs for the 18Sounds 15NLW9300s , and it looks to be quite the impressive driver, but at over $400 each, I am not so sure that I would go with those over a TD15x or TD15m. The 18Sounds driver may very well be better, I honestly do not know, but you would have to design an entirely new crossover for this, as opposed to just complying Chops design. Are you capable of crossover design and do you have measurement gear?
post #667 of 1502
Quote:
Originally Posted by ChopShop1 View Post

Thanks for the link Lock, don't know how I missed that one. It had me nervous for a minute, but it seems that the last listen spoken about in the last few posts has put me at ease biggrin.gif I know Andrew is talking about an east coast gtg to do the same, just trying to search out a venue. I wish the house was done, I'd do it there.

In other news, I'm excited, as Matt should have the gear this week and we can really start discussing enclosure specifics, etc. I am trying to be patient and hold out for the seos15 WG for the surrounds too, but the down time is killing me. Now that I'm reenvigorated, everyday seems like a week biggrin.gif

Sent some PMs out regarding the Amp GTG venue - hopefully we can make it happen soon!

Looking forward to see what Matt finds with the 24/BMS combo. I'm sure it will light a fire under my butt to get some of this gear sold. cool.gif
post #668 of 1502
Thread Starter 
Quote:
Originally Posted by Martycool007 View Post

Wow, I just looked up the specs for the 18Sounds 15NLW9300s , and it looks to be quite the impressive driver, but at over $400 each, I am not so sure that I would go with those over a TD15x or TD15m. The 18Sounds driver may very well be better, I honestly do not know, but you would have to design an entirely new crossover for this, as opposed to just complying Chops design. Are you capable of crossover design and do you have measurement gear?

I can't honestly tell you how it compares Marty, as I have not used one of the 18sound drivers.
post #669 of 1502
Being in Australia causes prices to be much more expensive than anyone else. I can get the 9300 for about 315 each down the road but the AE spiders plus shipping are about 450 or more to my door. So that's the only reason. Plus I just bought a pair of them to see how they will sound in a th. So there may be a better driver for 30-600hz. And when I build my version it will be a very slow process. Starting with passive hpass filters and good built in EQ with my AVR.
post #670 of 1502
"So there may be a better driver for 30-600hz."

there are many good drivers from 18sounds. the 12nmb420 might be the best midrange and the 15nd930 and 15nmb420 are nice if you need something to cover into the upper bass. i saw some distortion measurements on the 15nd930 the other day that were pretty low, but i don't recall which site i was on. thd was down 50db or so at 90db ref 1m up to past 1khz.
post #671 of 1502
^ Those are nice, low distortion drivers. Most drivers with shorting rings (ddr, Faraday, etc...) will keep indusctance low with a nice phase response to boot. At the expense for output, I'd opt for the higher sensitivity of the 12" for bandpass duty with an IB for the lows. biggrin.gif Ugh...450 for AE shipped per is too much for sure.
post #672 of 1502
Dual 12's sounds nice also. And aesthetically speaking dual 10's looks nice also under a 24" waveguide. I dont need mass spl. I am sure even the dual 10 would be plenty for me. But that being said I still like the idea of 12's or bigger. Having to listen to only a L/R off of an AVR is very appealing to me.I would like to have a fully active setup but that gets very expensive and I hate to think about the extra electricity I am using. My subs need a pair of amps themselves and I love bass but at times that extra expense of electricity is on my mind.

I have many ideas but not enough money to experiment. So for now I will just stay tuned and see how this goes. I have so many other designs in a big book I would love to try but just cant. Avantegarde Nano looks like a fun clone idea but without the HT directivity of the SEOS. Paul Spenser's Synergy looks like fun but again would it be enough for me. Always been a big fan of the vintage JBL speakers also so hopefully chop gets this started soon. biggrin.gif
post #673 of 1502
Thread Starter 
Well, the gear is in the hands of my trusted advisor and design expert Mtg90! Hopefully the design will cooperate with Matt and not give him too much trouble.

I am still deciding on the waveguide for surrounds....I want to order all the DNA360s and seos12s, but my "reasonable" side tells me that the seos15 will be worth the wait and to stick it out for them.
post #674 of 1502
So he's got all the drivers and horns to start testing and come up with recommended enclosures and xover?
post #675 of 1502
I'm sure they will be less headache then my TD6's were. smile.gif

Seeing as it sounds like you have the time; I would hold out for the SEOS15's. I'd like to see how they model with the TD15 compared to my 12 as well.
post #676 of 1502
Thread Starter 
Quote:
Originally Posted by gpmbc View Post

So he's got all the drivers and horns to start testing and come up with recommended enclosures and xover?
Yep. We are ready to start!
post #677 of 1502
Thread Starter 
Quote:
Originally Posted by bass addict View Post

I'm sure they will be less headache then my TD6's were. smile.gif

Seeing as it sounds like you have the time; I would hold out for the SEOS15's. I'd like to see how they model with the TD15 compared to my 12 as well.
Yeah, I'm sure they'll be a bit easier. Thank u, the voice of reason!
post #678 of 1502
Quote:
Originally Posted by ChopShop1 View Post

Yep. We are ready to start!
Sweeet!
post #679 of 1502
Thread Starter 
It has begun!! Matt has started the final specs and is almost ready to the test build, don't ask me how with all that he has going on.
post #680 of 1502
Yay!

post #681 of 1502
Quote:
Originally Posted by ChopShop1 View Post

It has begun!! Matt has started the final specs and is almost ready to the test build, .

Hell yeah.
Quote:
don't ask me how with all that he has going on

For the record, in case you didn't know; here is a pic of Matt after a bbq incident. The gigs up. biggrin.gif
post #682 of 1502
Quote:
Originally Posted by ChopShop1 View Post

Well, the gear is in the hands of my trusted advisor and design expert Mtg90! Hopefully the design will cooperate with Matt and not give him too much trouble.

I am still deciding on the waveguide for surrounds....I want to order all the DNA360s and seos12s, but my "reasonable" side tells me that the seos15 will be worth the wait and to stick it out for them.


I am sure that the Seos-12's will be just fine, and doubt you could tell the difference between those and the Seos-15's if using them solely for surround duty. That is just my opinion.
Speaking of the Seos-15, do you or anyone else know if they are getting closer to being ready to be shipped out?
post #683 of 1502
Thread Starter 
Why hello there pretty thang...

test box.jpg 41k .jpg file

Just a proto enclosure, but it gets the old blood pumping!! biggrin.gif
post #684 of 1502
Thread Starter 


That's better

I think we should rename this one "tha fridge"...Matt came up with that once the box was started and you could really see the size of it.
post #685 of 1502
Yours is so much bigger than mine! tongue.gif
post #686 of 1502
I see your Schwartz is as big as mine!

post #687 of 1502
More progress being made,

The baffle is cut, it is two parts, a 1/2" piece that serves as the recess for both the woofers and waveguide then a 3/4" that they mount to.



Lots of clamps needed for this massive baffle biggrin.gif



I am building it ported but I will also plug them up and try it sealed as well then let Jake know what I think sounds better. I am going to make some easy inexpensive flared ports for it. First I cut out some MDF rings.




Then I glue them onto the PVC. I use hot glue for that as it seems to bond the two very well and dries very quick so I can proceed to the next step of flush trimming the inside without waiting much. Then I put the round overs on them.





I finished today by gluing them into the baffle though this picture is just them sitting inside their cutouts.
post #688 of 1502
Geez man. Have you seen my test baffles? I usually free hand the router for recesses. And flush rout the baffle edges, nah, waste of time and router bit sharpness. Who needs extra clamps on a test baffle when 30 minutes of air drying will suffice biggrin.gif

Looks great smile.gif I do hope you use those for a permanent build!
post #689 of 1502
Looks great so far!
post #690 of 1502
Matt - the baffles look fantastic. Seems like you are getting close!
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