Seos 24, 135Hz Midbass Horn and Quad PA460 18" - Page 3 - AVS Forum | Home Theater Discussions And Reviews
Forum Jump: 
 63Likes
Reply
 
Thread Tools
post #61 of 74 Old 07-31-2017, 06:12 PM - Thread Starter
Senior Member
 
jshadzi's Avatar
 
Join Date: Apr 2016
Location: Bay Area, CA
Posts: 406
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 98 Post(s)
Liked: 344
Quote:
Originally Posted by BassThatHz View Post
Probably room modes... The optimal location for subwoofers is rarely where the fronts need to be.


What specifically, the sub bass level? Everything s measuring more or less how it modeled, I'm playing with settings and am getting a much more even match, I'll post more info tonight.
jshadzi is offline  
Sponsored Links
Advertisement
 
post #62 of 74 Old 07-31-2017, 08:26 PM - Thread Starter
Senior Member
 
jshadzi's Avatar
 
Join Date: Apr 2016
Location: Bay Area, CA
Posts: 406
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 98 Post(s)
Liked: 344
I did some more XO tweaking and they are sounding very good, I also was able to bring the bass up to the level of the midbass horn.this is a blended sweep gated to 5ms



Close up on the bass FR, comparison with both ports open and one plugged, actually quite close to the models if you consider room resonances





I demoed them for some friends last night, Tricycle Film and the BB's track 1 almost resulted in a few cardiac arrests with the incredible dynamic range of that album =)

Javad
jshadzi is offline  
post #63 of 74 Old 08-01-2017, 01:14 AM
Member
 
Join Date: Sep 2016
Posts: 185
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 70 Post(s)
Liked: 74
Seos 24, 135Hz Midbass Horn and Quad PA460 18"

Wow that's amazing, good job on these, how many listening rooms do you have? You have your red towers, strafis and now these lol.


Sent from my iPhone using Tapatalk
Trimlock is online now  
 
post #64 of 74 Old 08-01-2017, 10:48 PM - Thread Starter
Senior Member
 
jshadzi's Avatar
 
Join Date: Apr 2016
Location: Bay Area, CA
Posts: 406
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 98 Post(s)
Liked: 344
Quote:
Originally Posted by Trimlock View Post
Wow that's amazing, good job on these, how many listening rooms do you have? You have your red towers, strafis and now these lol.


Sent from my iPhone using Tapatalk


Thanks! I have taken over the dining room from the wife and she's been pretty cool with it. I've got a lot of speakers still, I sold the 812's to a friend that had to have them as well as the Microfarads, the Baronette towers, Fatboys and a few more, I'll be building a subwoofer to go with the Strafi soon as well =)
Trimlock likes this.
jshadzi is offline  
post #65 of 74 Old 08-02-2017, 09:04 AM
Advanced Member
 
Vince_B's Avatar
 
Join Date: Aug 2001
Location: Hummelstown PA USA
Posts: 894
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 80 Post(s)
Liked: 45
Nice looking cabs, some techflex would dress up the white wires nicely


Sent from my SM-N910V using Tapatalk
Vince_B is offline  
post #66 of 74 Old 08-02-2017, 09:06 AM - Thread Starter
Senior Member
 
jshadzi's Avatar
 
Join Date: Apr 2016
Location: Bay Area, CA
Posts: 406
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 98 Post(s)
Liked: 344
Seos 24, 135Hz Midbass Horn and Quad PA460 18"

Quote:
Nice looking cabs, some techflex would dress up the white wires nicely

Thanks! The wires are just temporary, I'm working on some twisted pair speaker wires to go with them, will post them soon.
jshadzi is offline  
post #67 of 74 Old 08-05-2017, 03:24 PM - Thread Starter
Senior Member
 
jshadzi's Avatar
 
Join Date: Apr 2016
Location: Bay Area, CA
Posts: 406
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 98 Post(s)
Liked: 344
One last touch on these, I wanted to do some nice speaker wires that always stay with this set.

I started with 6 strands of 18g cooper wire. We were all out of unicorn dust silver wire at 034Motorsport so this had to do.



I twisted the 3 wires together as positives and negatives then twisted those together. The fun part was passing all that through some 1/2" clear shrink tuning, I should have used 3/4" but I wanted it to be tight.

Some ends have banana plugs and others have spade connections.

These are the main wires that go to the sub XO input



I cleared over the bodies to insulate them









Then the wires out of the XO into each sub and up to the midbass XO





And installed







Horn L pad finalized, this configuration allows quick and easy swapping out of resistors to adjust the L pad w/o any soldering.





Thanks!
Javad
filtor1 and OJ Bartley like this.
jshadzi is offline  
post #68 of 74 Old 08-12-2017, 08:34 AM - Thread Starter
Senior Member
 
jshadzi's Avatar
 
Join Date: Apr 2016
Location: Bay Area, CA
Posts: 406
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 98 Post(s)
Liked: 344
Here's a video of them playing some Diana Krall, with detail shots as well

jshadzi is offline  
post #69 of 74 Old 08-12-2017, 08:53 AM - Thread Starter
Senior Member
 
jshadzi's Avatar
 
Join Date: Apr 2016
Location: Bay Area, CA
Posts: 406
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 98 Post(s)
Liked: 344
And a couple more pics







OJ Bartley likes this.
jshadzi is offline  
post #70 of 74 Old 08-12-2017, 10:22 AM
Newbie
 
Join Date: Aug 2016
Posts: 12
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Liked: 4
Excellent work (as are all of your projects). Thanks for sharing with as much detail and pics too. I was skeptical on how the bottoms would look. I should have known better. They look perfect. So does attaching the two woofer boxes give the same force cancelation that a single dual opposed does? I'm still amazed at the way my dual opposed um18s have no cabinet vibration as the woofers stretch in and out to Type O or Run DMC.

Sent from my SM-N920T using Tapatalk
Grott77Ralph is offline  
post #71 of 74 Old 08-12-2017, 10:42 AM
Member
 
Join Date: Sep 2016
Posts: 185
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 70 Post(s)
Liked: 74
Its funny, I take over our dinning room as well.

"Ok sun, you get to sit on the subwoofer and daughter you get to sit on the stack of scrap."

These look great, very cool idea to keep the XO's outside so you can change them on the fly.
Trimlock is online now  
post #72 of 74 Old 08-12-2017, 10:57 AM - Thread Starter
Senior Member
 
jshadzi's Avatar
 
Join Date: Apr 2016
Location: Bay Area, CA
Posts: 406
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 98 Post(s)
Liked: 344
Quote:
Originally Posted by Grott77Ralph View Post
Excellent work (as are all of your projects). Thanks for sharing with as much detail and pics too. I was skeptical on how the bottoms would look. I should have known better. They look perfect. So does attaching the two woofer boxes give the same force cancelation that a single dual opposed does? I'm still amazed at the way my dual opposed um18s have no cabinet vibration as the woofers stretch in and out to Type O or Run DMC.

Hey man thanks, glad you like them! I'm really impressed with these "bargain" woofers, I haven't gotten them out of shape even at obscene SPL levels where the house sounds like it's shaking apart. And glad you like how they look too, I ran with the "rat rod" theme, or more "nice upscale rat rod" =)

Yes they act as force cancelling, the 4 brackets tie the two enclosures rigidly together, virtually no vibrations, I'll upload a video, you can imagine the horns on top wouldn't like being bounced around, and there isn't a vibration in them even at full power.

Javad
jshadzi is offline  
post #73 of 74 Old 08-13-2017, 08:34 AM
AVS Forum Special Member
 
NWCgrad's Avatar
 
Join Date: Feb 2010
Location: Frederick, MD
Posts: 3,578
Mentioned: 52 Post(s)
Tagged: 0 Thread(s)
Quoted: 1265 Post(s)
Liked: 1304
Nice build Javad!!! Very cool speaker system, I would love to hear them.

______________________________________
Home Theater:
http://www.avsforum.com/forum/15-gen...sement-ht.html
NWCgrad is offline  
post #74 of 74 Old 08-13-2017, 08:58 AM - Thread Starter
Senior Member
 
jshadzi's Avatar
 
Join Date: Apr 2016
Location: Bay Area, CA
Posts: 406
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 98 Post(s)
Liked: 344
Quote:
Originally Posted by NWCgrad View Post
Nice build Javad!!! Very cool speaker system, I would love to hear them.


Thanks! If you're ever in the SF Bay Area let me know =)
jshadzi is offline  
Sponsored Links
Advertisement
 
Reply DIY Speakers and Subs

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off