AV15H Dual 18" PR Build - AVS Forum | Home Theater Discussions And Reviews
Forum Jump: 
 2Likes
  • 1 Post By pbc
  • 1 Post By pbc
 
Thread Tools
post #1 of 20 Old 06-20-2020, 11:36 AM - Thread Starter
pbc
AVS Forum Special Member
 
pbc's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Posts: 6,127
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 521 Post(s)
Liked: 232
AV15H Dual 18" PR Build

So it's been over 10 years, moved into a larger house that is dwarfing the low end output of my old sealed dual opposed AV15H subs, and thought I'd try out the old ~5.5 cubic foot dual PR based AV15H that "came and went" way back when. More importantly, I'm just bored and wanted to build something different.

Did a Sketchup of the design, still debating whether to try staining the birch white or doing some form of white wash vs a dark stain as they are today. My wall unit is white, so was thinking the white subs would compliment it.

Will use my Funk Audio 2x2400 amp for now to power these, though I'm wondering if I can use 1 channel to drive both subs given xmax is around 1000-1100 Watts.
Attached Thumbnails
Click image for larger version

Name:	Front.JPG
Views:	57
Size:	56.0 KB
ID:	2746058   Click image for larger version

Name:	Front with grill.JPG
Views:	56
Size:	37.7 KB
ID:	2746060   Click image for larger version

Name:	Inside.JPG
Views:	57
Size:	54.1 KB
ID:	2746062   Click image for larger version

Name:	Cutsheets.JPG
Views:	52
Size:	67.9 KB
ID:	2746064   Click image for larger version

Name:	20170111_081843.jpg
Views:	79
Size:	630.2 KB
ID:	2746104  


 

My DIY Subs ... https://www.avsforum.com/forum/showthread.php?t=1233892

Quote:

J Dunlavy:.. if you stop to think about it, no loudspeaker can sound more accurate than it measures.

 


Last edited by pbc; 06-20-2020 at 12:04 PM.
pbc is offline  
Sponsored Links
Advertisement
 
post #2 of 20 Old 06-20-2020, 11:36 AM - Thread Starter
pbc
AVS Forum Special Member
 
pbc's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Posts: 6,127
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 521 Post(s)
Liked: 232
Contacted Mark and Mach 5 Audio to build the 18" PR's for me, they had the following specs before he added mass to get it to 2500grams.

Fs - 23Hz
Qms - 8
Sd - 1209cm2
VAS - 240L
Xmax - 35mm
Mms - 380g

Had contacted John at AE, but the cost after FX rate and shipping would have been too much. Mark was great, told me it would take 2 or 3 weeks before he could build the woofers for me, then when he was ready I sent a small deposit, and about 1.5 weeks later I received my first PR yesterday (not sure why Purolator only sent 1 and the other 3 are expected Monday).

Had the cut sheets cut for me by Century Mill Lumber out of 13 ply Baltic Birch. Then started on the circles using my Jasper 200 and router.

WinISD file and Driver pics attached. Also test fitted the 18.5" cutout to see if it would be flush ... perfect.

Okay, finished all the circle cuts. Dust wasn't too bad.
Attached Thumbnails
Click image for larger version

Name:	WinISD 2500 grams.JPG
Views:	58
Size:	152.8 KB
ID:	2746082   Click image for larger version

Name:	IMG_20200620_093528.jpg
Views:	54
Size:	2.79 MB
ID:	2746084   Click image for larger version

Name:	IMG_20200620_114357.jpg
Views:	50
Size:	2.86 MB
ID:	2746086   Click image for larger version

Name:	IMG_20200620_115150.jpg
Views:	61
Size:	2.61 MB
ID:	2746088   Click image for larger version

Name:	IMG_20200620_114046.jpg
Views:	51
Size:	3.09 MB
ID:	2746090  

Click image for larger version

Name:	IMG_20200620_115220.jpg
Views:	62
Size:	2.39 MB
ID:	2746092   Click image for larger version

Name:	IMG_20200620_161826.jpg
Views:	48
Size:	3.62 MB
ID:	2746176   Click image for larger version

Name:	IMG_20200620_161832.jpg
Views:	50
Size:	2.54 MB
ID:	2746178  
Chris Popovich likes this.

 

My DIY Subs ... https://www.avsforum.com/forum/showthread.php?t=1233892

Quote:

J Dunlavy:.. if you stop to think about it, no loudspeaker can sound more accurate than it measures.

 


Last edited by pbc; 06-20-2020 at 02:40 PM.
pbc is offline  
post #3 of 20 Old 06-20-2020, 11:36 AM - Thread Starter
pbc
AVS Forum Special Member
 
pbc's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Posts: 6,127
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 521 Post(s)
Liked: 232
Reserved 2

 

My DIY Subs ... https://www.avsforum.com/forum/showthread.php?t=1233892

Quote:

J Dunlavy:.. if you stop to think about it, no loudspeaker can sound more accurate than it measures.

 


Last edited by pbc; 06-20-2020 at 11:50 AM.
pbc is offline  
Sponsored Links
Advertisement
 
post #4 of 20 Old 06-20-2020, 11:36 AM - Thread Starter
pbc
AVS Forum Special Member
 
pbc's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Posts: 6,127
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 521 Post(s)
Liked: 232
reserved 3

 

My DIY Subs ... https://www.avsforum.com/forum/showthread.php?t=1233892

Quote:

J Dunlavy:.. if you stop to think about it, no loudspeaker can sound more accurate than it measures.

 

pbc is offline  
post #5 of 20 Old 06-20-2020, 11:37 AM - Thread Starter
pbc
AVS Forum Special Member
 
pbc's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Posts: 6,127
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 521 Post(s)
Liked: 232
reserved 4

 

My DIY Subs ... https://www.avsforum.com/forum/showthread.php?t=1233892

Quote:

J Dunlavy:.. if you stop to think about it, no loudspeaker can sound more accurate than it measures.

 

pbc is offline  
post #6 of 20 Old 06-20-2020, 11:54 AM - Thread Starter
pbc
AVS Forum Special Member
 
pbc's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Posts: 6,127
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 521 Post(s)
Liked: 232
So found the AV15H pdf online for dimensions, but now I can't recall, the first pic says the internal dimension is 14", the second shows 14.188". On my Jasper jig, would I choose 14 3/16, or 14 1/4? Screw holes seem to be 14.688?

Click image for larger version

Name:	AV15H Dimensions.JPG
Views:	34
Size:	55.2 KB
ID:	2746094

http://aespeakers.com/pdfs/AV15-dimensional.pdf

Edit: Went with 14 3/16, hopefully it fits, was too lazy to remove the driver from the existing enclosure.

 

My DIY Subs ... https://www.avsforum.com/forum/showthread.php?t=1233892

Quote:

J Dunlavy:.. if you stop to think about it, no loudspeaker can sound more accurate than it measures.

 


Last edited by pbc; 06-20-2020 at 02:41 PM.
pbc is offline  
post #7 of 20 Old 06-20-2020, 01:45 PM
Advanced Member
 
Chris Popovich's Avatar
 
Join Date: Dec 2005
Location: Phoenix AZ
Posts: 804
Mentioned: 24 Post(s)
Tagged: 0 Thread(s)
Quoted: 385 Post(s)
Liked: 364
Glad Mark worked out for you! Keep us posted!
Chris Popovich is online now  
post #8 of 20 Old 06-20-2020, 02:45 PM - Thread Starter
pbc
AVS Forum Special Member
 
pbc's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Posts: 6,127
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 521 Post(s)
Liked: 232
Yeah, he was great during the process. Thx for the recco.

 

My DIY Subs ... https://www.avsforum.com/forum/showthread.php?t=1233892

Quote:

J Dunlavy:.. if you stop to think about it, no loudspeaker can sound more accurate than it measures.

 

pbc is offline  
post #9 of 20 Old 06-21-2020, 04:49 PM
Advanced Member
 
spanish68's Avatar
 
Join Date: Jun 2008
Location: S. Florida
Posts: 722
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 25 Post(s)
Liked: 49
Nice room + nice subs. Are you doing two or four PR boxes? What tuning are you planning for your subs? If you were using the Funk amp two channels before with no issues, I would do the same with this build. I'll be following your build and impressions. I have a feeling that you are going to be very happy with their low end, to go along with their great mid-bass.
spanish68 is offline  
post #10 of 20 Old 06-21-2020, 07:09 PM - Thread Starter
pbc
AVS Forum Special Member
 
pbc's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Posts: 6,127
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 521 Post(s)
Liked: 232
Two PR boxes for now. I have weigh for up to 2500 grams, which I think tunes it to somewhere in the 16 to 18hz range.

For the life of me I can't recall, what size screws (1.5" or 1.25") do I purchase to mount the drivers, and were folks recommending Hurricane nuts or T nuts?

Would this stuff work fine as gasket tape?

https://www.amazon.ca/gp/product/B07...254OSKWZ&psc=1

It's closed cell neoprene vs PVC.

 

My DIY Subs ... https://www.avsforum.com/forum/showthread.php?t=1233892

Quote:

J Dunlavy:.. if you stop to think about it, no loudspeaker can sound more accurate than it measures.

 

pbc is offline  
post #11 of 20 Old 06-22-2020, 02:56 PM
Advanced Member
 
spanish68's Avatar
 
Join Date: Jun 2008
Location: S. Florida
Posts: 722
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 25 Post(s)
Liked: 49
So you are going to use the dual PR subs with the dual opposed sealed sub? That gasket tape should be fine but I would go with 3/4" width. I got mine at Home Depot. I used 1.5" screws for my subs but 1.25" should also work fine.

Last edited by spanish68; 06-22-2020 at 03:22 PM.
spanish68 is offline  
post #12 of 20 Old 06-22-2020, 03:08 PM - Thread Starter
pbc
AVS Forum Special Member
 
pbc's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Posts: 6,127
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 521 Post(s)
Liked: 232
Quote:
Originally Posted by spanish68 View Post
So you are going to use the dual PR subs with the dual opposed sealed sub? That gasket tape should be fine but I would go with 3/4" width. I got mine at home depot. I used 1.5" screws for my subs but 1.25" should also work fine.
Thx, 3/4" width by 1/4" thick?

 

My DIY Subs ... https://www.avsforum.com/forum/showthread.php?t=1233892

Quote:

J Dunlavy:.. if you stop to think about it, no loudspeaker can sound more accurate than it measures.

 

pbc is offline  
post #13 of 20 Old 06-22-2020, 03:23 PM
Advanced Member
 
spanish68's Avatar
 
Join Date: Jun 2008
Location: S. Florida
Posts: 722
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 25 Post(s)
Liked: 49
Yes.
spanish68 is offline  
post #14 of 20 Old 06-22-2020, 03:37 PM
Advanced Member
 
spanish68's Avatar
 
Join Date: Jun 2008
Location: S. Florida
Posts: 722
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 25 Post(s)
Liked: 49
Also, I would add some bracing from the front baffle to the back of the enclosure, maybe some dowels.
spanish68 is offline  
post #15 of 20 Old 06-22-2020, 04:16 PM
Senior Member
 
drewp29's Avatar
 
Join Date: Mar 2010
Location: Southern Colorado
Posts: 268
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 124 Post(s)
Liked: 110
Quote:
Originally Posted by spanish68 View Post
Also, I would add some bracing from the front baffle to the back of the enclosure, maybe some dowels.

3/4" or 1" dowels work well. I usually leave the front baffle for last, get the dowels glued in place with PL, put a nice large dollop of PL on the end of the dowels and then affix the front baffle. The PL expands so any slight gap you might have between the dowel end and the baffle gets filled. Then I fillet around the end of the dowel with PL after it is assembled just to make sure it is secure. It's messy and doesn't look great, but who cares how it looks since it's on the inside. The PL makes a pretty solid connection, and so far I haven't had one break loose on me. So far.


Looking at the photos above, I keep trying to figure out something to do with all the dang wood circles I have in the garage. I've used a few for corner braces, but since you can make 4 from one circle, I still have quite a few left over.
drewp29 is offline  
post #16 of 20 Old 06-22-2020, 04:41 PM - Thread Starter
pbc
AVS Forum Special Member
 
pbc's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Posts: 6,127
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 521 Post(s)
Liked: 232
Quote:
Originally Posted by drewp29 View Post
3/4" or 1" dowels work well. I usually leave the front baffle for last, get the dowels glued in place with PL, put a nice large dollop of PL on the end of the dowels and then affix the front baffle. The PL expands so any slight gap you might have between the dowel end and the baffle gets filled. Then I fillet around the end of the dowel with PL after it is assembled just to make sure it is secure. It's messy and doesn't look great, but who cares how it looks since it's on the inside. The PL makes a pretty solid connection, and so far I haven't had one break loose on me. So far.


Looking at the photos above, I keep trying to figure out something to do with all the dang wood circles I have in the garage. I've used a few for corner braces, but since you can make 4 from one circle, I still have quite a few left over.
Stain them and you have some cheese and meat serving plates?
drewp29 likes this.

 

My DIY Subs ... https://www.avsforum.com/forum/showthread.php?t=1233892

Quote:

J Dunlavy:.. if you stop to think about it, no loudspeaker can sound more accurate than it measures.

 

pbc is offline  
post #17 of 20 Old 06-22-2020, 04:42 PM - Thread Starter
pbc
AVS Forum Special Member
 
pbc's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Posts: 6,127
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 521 Post(s)
Liked: 232
Quote:
Originally Posted by spanish68 View Post
I used 1.5" screws for my subs but 1.25" should also work fine.
These should do the trick.

https://www.amazon.ca/Hard-Find-Fast...H3BMKJG50VQ3MF

 

My DIY Subs ... https://www.avsforum.com/forum/showthread.php?t=1233892

Quote:

J Dunlavy:.. if you stop to think about it, no loudspeaker can sound more accurate than it measures.

 

pbc is offline  
post #18 of 20 Old 06-28-2020, 08:54 AM - Thread Starter
pbc
AVS Forum Special Member
 
pbc's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Posts: 6,127
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 521 Post(s)
Liked: 232
Quote:
Originally Posted by spanish68 View Post
So you are going to use the dual PR subs with the dual opposed sealed sub? That gasket tape should be fine but I would go with 3/4" width. I got mine at Home Depot. I used 1.5" screws for my subs but 1.25" should also work fine.
Have a link to the screws you used? The ones I bought were way too thick (thought that 1/4" was equivalent to an M10 but it's larger).

Also, what are folks using for the binding posts these days? Just looking for something easy to put on the double wall back of the enclosure.

Might try gluing one of the enclosures today and just not the top yet, though I feel like I'm forgetting something that I'll remember right after it's glued! lol

 

My DIY Subs ... https://www.avsforum.com/forum/showthread.php?t=1233892

Quote:

J Dunlavy:.. if you stop to think about it, no loudspeaker can sound more accurate than it measures.

 

pbc is offline  
post #19 of 20 Old 06-28-2020, 11:12 AM
Advanced Member
 
spanish68's Avatar
 
Join Date: Jun 2008
Location: S. Florida
Posts: 722
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 25 Post(s)
Liked: 49
With my latest build, dual sealed Eminence NSW 21", I went to homedepo and got deep thread 1.5" screws and I believe they were #6 (width). You'll need either #8 or #6 and 1.25" or 1.5" in lenght. Phillip head is fine. Basic, but they worked great for me. As long as they are wood screws (deep thread), they'll work to mount your PR's and drivers.

With regards to the connectors. In my case, since I have one Speakerpower HT4000 plate amp powering my two subs, I used Speakon Neutrik 4 pole connector. You'll need one per box and the connecting wire if you're using one amp or one amp channel to power two subs. If it is just one amp or one amp channel for one sub, then a simple cup connector (round or square) should do the trick. Also, since my Speakerpower amp had a speakon connector, I only needed one speakon connector. Does your amp have the speakon connector?

Check partsexpress to get ideas or if you need to shop some sub supplies. If you need sub feet, grille mesh, etc, you can get it there. I just ordered some mesh since I'm going to build two grilles for my two subs and will use magnets to mount them.

Last edited by spanish68; 06-28-2020 at 12:19 PM.
spanish68 is offline  
post #20 of 20 Old 06-28-2020, 12:50 PM - Thread Starter
pbc
AVS Forum Special Member
 
pbc's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Posts: 6,127
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 521 Post(s)
Liked: 232
Thx, already have speaker cable from my rack amp to the sub locations and I terminated them with banana plugs where the existing subs are, so trying to locate something simple I can install after putting the box together vs before. Being in Canada Parts express unfortunately has a high shipping cost!

 

My DIY Subs ... https://www.avsforum.com/forum/showthread.php?t=1233892

Quote:

J Dunlavy:.. if you stop to think about it, no loudspeaker can sound more accurate than it measures.

 

pbc 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