15" Ported Design Help ? 20W x 24H x 24D (external dimentions) - AVS Forum
Forum Jump: 
 
Thread Tools
post #1 of 30 Old 08-05-2014, 06:58 PM - Thread Starter
Advanced Member
 
randyc1's Avatar
 
Join Date: Dec 2009
Location: Montreal
Posts: 680
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 84 Post(s)
Liked: 19
15" Ported Design Help ? 20W x 24H x 24D (external dimentions)

Would like to upgrade my current 2 -12" RSS315HO,3.6cuft net Subs with 15" subs in bigger cabs. The biggest I would like to go is 20W x 24H x 24D,which comes out to (6.6cuft External). these dimension allow me to use them upright 24"high or on there sides 20" high.

I will build 4 for my 22'x24'x8' room. 2 front firing,slotted, martystyle, and 2 downfiring to be a little less obvious for the back of my Media room.

Drivers : 4 x RSS390HO or SI 15D4" ? Powered by a inuke 6000dsp ??, dont know which Driver would turn out better for this size enclosure after port and tune are determined ?. Will be used mainly for HT.


Picture of what i have now


Thanks !!
Attached Thumbnails
Click image for larger version

Name:	IMG_3147.jpg
Views:	47
Size:	184.9 KB
ID:	198321  
randyc1 is online now  
Sponsored Links
Advertisement
 
post #2 of 30 Old 08-05-2014, 07:12 PM
AVS Special Member
 
chalugadp's Avatar
 
Join Date: Jan 2013
Location: Vancouver, BC, Canada
Posts: 4,993
Mentioned: 5 Post(s)
Tagged: 1 Thread(s)
Quoted: 883 Post(s)
Liked: 1009
Si15d4 and you can run 2 off of inuke3000dsp. Both drivers will perform similar but Dayton will need inuke6000 for full power.
Your tuning will be 21-22hz. Usuable to 17hz.
chalugadp is online now  
post #3 of 30 Old 08-05-2014, 09:08 PM - Thread Starter
Advanced Member
 
randyc1's Avatar
 
Join Date: Dec 2009
Location: Montreal
Posts: 680
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 84 Post(s)
Liked: 19
Quote:
Originally Posted by chalugadp View Post
Si15d4 and you can run 2 off of inuke3000dsp. Both drivers will perform similar but Dayton will need inuke6000 for full power.
Your tuning will be 21-22hz. Usuable to 17hz.
Hi Chalugadp Thanks , ...I dont have WinISD, is this how you calculated Net Vol and Port ?
randyc1 is online now  
post #4 of 30 Old 08-05-2014, 09:11 PM
AVS Special Member
 
chalugadp's Avatar
 
Join Date: Jan 2013
Location: Vancouver, BC, Canada
Posts: 4,993
Mentioned: 5 Post(s)
Tagged: 1 Thread(s)
Quoted: 883 Post(s)
Liked: 1009
Quote:
Originally Posted by randyc1 View Post
Hi Chalugadp Thanks , ...I dont have WinISD, is this how you calculated Net Vol and Port ?
Seen so many sizes that I know tuning pretty well. Your slightly smaller then cube and bigger then micro.
chalugadp is online now  
post #5 of 30 Old 08-06-2014, 03:09 PM - Thread Starter
Advanced Member
 
randyc1's Avatar
 
Join Date: Dec 2009
Location: Montreal
Posts: 680
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 84 Post(s)
Liked: 19
...Just need someone who can design this for me now
randyc1 is online now  
post #6 of 30 Old 08-06-2014, 05:13 PM
AVS Special Member
 
chrapladm's Avatar
 
Join Date: Mar 2010
Posts: 2,762
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 161 Post(s)
Liked: 81
Do you have the 15" SI's already?


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
chrapladm is offline  
post #7 of 30 Old 08-06-2014, 05:22 PM - Thread Starter
Advanced Member
 
randyc1's Avatar
 
Join Date: Dec 2009
Location: Montreal
Posts: 680
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 84 Post(s)
Liked: 19
Quote:
Originally Posted by chrapladm View Post
Do you have the 15" SI's already?
Hi again Chrapladm,... no I don't , not sure between SI15" or RSS390HO for the dimentions I want to build ?, ...if very similar the SI15 is $145.00 though ?
randyc1 is online now  
post #8 of 30 Old 08-06-2014, 06:42 PM
AVS Special Member
 
chrapladm's Avatar
 
Join Date: Mar 2010
Posts: 2,762
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 161 Post(s)
Liked: 81
Unless you see them online I dont believe the SI 15's are available any more. The UM15's are from Dayton. The 390 has less excursion than the UM15. BUT its your call.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
chrapladm is offline  
post #9 of 30 Old 08-06-2014, 06:53 PM - Thread Starter
Advanced Member
 
randyc1's Avatar
 
Join Date: Dec 2009
Location: Montreal
Posts: 680
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 84 Post(s)
Liked: 19
Quote:
Originally Posted by chrapladm View Post
Unless you see them online I dont believe the SI 15's are available any more. The UM15's are from Dayton. The 390 has less excursion than the UM15. BUT its your call.
...The SI still have D4's and the UM15 takes a huge ported box , way bigger than the Ext: 20x24x24 i would like to build. so i guess the 2 best for the money are the SI and RSS.

How much depends on TS Paremeters ?

Last edited by randyc1; 08-06-2014 at 07:14 PM.
randyc1 is online now  
post #10 of 30 Old 08-06-2014, 07:12 PM
AVS Special Member
 
chalugadp's Avatar
 
Join Date: Jan 2013
Location: Vancouver, BC, Canada
Posts: 4,993
Mentioned: 5 Post(s)
Tagged: 1 Thread(s)
Quoted: 883 Post(s)
Liked: 1009
Quote:
Originally Posted by randyc1 View Post
...The SI still have D4's and the UM15 takes a huge ported box , way bigger than the Ex: 20x24x24 i would like to build. so i guess the 2 best for the money are the SI and RSS.

How much depends on TS Paremeters ?
The UM won't work in a ported box that small. The Dayton can handle more power and i know it works great in that size. Never used the si15 in that size cab.
chalugadp is online now  
post #11 of 30 Old 08-06-2014, 07:15 PM - Thread Starter
Advanced Member
 
randyc1's Avatar
 
Join Date: Dec 2009
Location: Montreal
Posts: 680
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 84 Post(s)
Liked: 19
Quote:
Originally Posted by chalugadp View Post
The UM won't work in a ported box that small. The Dayton can handle more power and i know it works great in that size. Never used the si15 in that size cab.
The SI15" has Same power handeling as the 18"..which from what we have learned is quit a bit more than 600W,..I guess it all depends on the TS parameters ??

Last edited by randyc1; 08-06-2014 at 07:50 PM.
randyc1 is online now  
post #12 of 30 Old 08-09-2014, 12:50 PM - Thread Starter
Advanced Member
 
randyc1's Avatar
 
Join Date: Dec 2009
Location: Montreal
Posts: 680
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 84 Post(s)
Liked: 19
Talking

...Anybody willing to Design-Model these for me in a 4.4cuft net cab with the SI15"

Ext Enclosure: 20Wx 24Hx 25D.
Slot Port : 17.75W x 1.5" ?

Last edited by randyc1; 08-13-2014 at 06:49 AM.
randyc1 is online now  
post #13 of 30 Old 08-13-2014, 06:50 AM - Thread Starter
Advanced Member
 
randyc1's Avatar
 
Join Date: Dec 2009
Location: Montreal
Posts: 680
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 84 Post(s)
Liked: 19
...Anyone like Modeling a Driver ?
randyc1 is online now  
post #14 of 30 Old 08-13-2014, 01:13 PM
Member
 
RickJames's Avatar
 
Join Date: Dec 2006
Posts: 63
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 22 Post(s)
Liked: 23
Bill's Simplexx 15 sub is 20x20, 24.5 high. An SPL chart with the RSS390 HO is in this thread, http://billfitzmaurice.info/forum/vi...p?f=12&t=20963
RickJames is offline  
post #15 of 30 Old 08-13-2014, 01:14 PM
Advanced Member
 
Bassment's Avatar
 
Join Date: Aug 2013
Location: Ontario, Canada
Posts: 850
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 378 Post(s)
Liked: 149
what tune do you want? The port length is dependant on the tuning frequency.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Bassment is online now  
post #16 of 30 Old 08-13-2014, 01:20 PM
Advanced Member
 
Bassment's Avatar
 
Join Date: Aug 2013
Location: Ontario, Canada
Posts: 850
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 378 Post(s)
Liked: 149
For a 20 hz tune you need approximately:

Ext Enclosure: 20Wx 24Hx 25D.
Slot Port : 17.75W x 1.5" x 31"


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Bassment is online now  
post #17 of 30 Old 08-13-2014, 05:54 PM - Thread Starter
Advanced Member
 
randyc1's Avatar
 
Join Date: Dec 2009
Location: Montreal
Posts: 680
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 84 Post(s)
Liked: 19
Quote:
Originally Posted by Bassment View Post
For a 20 hz tune you need approximately:

Ext Enclosure: 20Wx 24Hx 25D.
Slot Port : 17.75W x 1.5" x 31"
Yes thanks Bassment !!,

Thats about what i had calculated also,... just wished I could get someone to model this for me with the SI15" to check if everything is were it should be , Vent speed, Ideal Tuning ..ect ?
randyc1 is online now  
post #18 of 30 Old 08-13-2014, 08:18 PM
AVS Special Member
 
chrapladm's Avatar
 
Join Date: Mar 2010
Posts: 2,762
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 161 Post(s)
Liked: 81
Dont worry about ideal tuning. And I will post another simulation with that port size.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
chrapladm is offline  
post #19 of 30 Old 08-13-2014, 09:16 PM - Thread Starter
Advanced Member
 
randyc1's Avatar
 
Join Date: Dec 2009
Location: Montreal
Posts: 680
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 84 Post(s)
Liked: 19
Quote:
Originally Posted by chrapladm View Post
dont worry about ideal tuning. And i will post another simulation with that port size.

Great Thanks !!
randyc1 is online now  
post #20 of 30 Old 08-14-2014, 06:11 AM
Advanced Member
 
Bassment's Avatar
 
Join Date: Aug 2013
Location: Ontario, Canada
Posts: 850
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 378 Post(s)
Liked: 149


2nd order 17 hz HPF
5 cubic feet internal box
20 hz tune
900 watts
under xmax at all frequencies


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Bassment is online now  
post #21 of 30 Old 08-14-2014, 07:59 AM - Thread Starter
Advanced Member
 
randyc1's Avatar
 
Join Date: Dec 2009
Location: Montreal
Posts: 680
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 84 Post(s)
Liked: 19
Quote:
Originally Posted by Bassment View Post


2nd order 17 hz HPF
5 cubic feet internal box
20 hz tune
900 watts
under xmax at all frequencies


Thanks Bassment ,... mine is actually 4.4cuft net

This is what LTD came up with (Micro thread) for the SI15 in a Smaller 3.5cuft @23 Hz tune
...Pactally Identical ?? ...Is it just beacause he used 1100W ??
randyc1 is online now  
post #22 of 30 Old 08-14-2014, 08:05 AM
Advanced Member
 
Bassment's Avatar
 
Join Date: Aug 2013
Location: Ontario, Canada
Posts: 850
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 378 Post(s)
Liked: 149
yep, the extra watts would make up for the tiny bit of sensitivity lost by going to a smaller box size.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Bassment is online now  
post #23 of 30 Old 08-14-2014, 08:17 AM - Thread Starter
Advanced Member
 
randyc1's Avatar
 
Join Date: Dec 2009
Location: Montreal
Posts: 680
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 84 Post(s)
Liked: 19
Quote:
Originally Posted by Bassment View Post
yep, the extra watts would make up for the tiny bit of sensitivity lost by going to a smaller box size.

Thanks again Bassment for helping me out !!
randyc1 is online now  
post #24 of 30 Old 08-14-2014, 08:40 AM
Advanced Member
 
Bassment's Avatar
 
Join Date: Aug 2013
Location: Ontario, Canada
Posts: 850
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 378 Post(s)
Liked: 149
you want a 35.5" long slot port then if your net internal is 4.5 cu ft, for a 20 hz tune


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Bassment is online now  
post #25 of 30 Old 08-14-2014, 10:13 AM - Thread Starter
Advanced Member
 
randyc1's Avatar
 
Join Date: Dec 2009
Location: Montreal
Posts: 680
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 84 Post(s)
Liked: 19
Quote:
Originally Posted by Bassment View Post
you want a 35.5" long slot port then if your net internal is 4.5 cu ft, for a 20 hz tune
Thanks ,..How do you go about choosing the ideal "Tune",.. is it a compromise of SPL and Extension ?

Will the fact that i will be building 4 Subs change the choosen "Tune" ?

Thanks again !
randyc1 is online now  
post #26 of 30 Old 08-14-2014, 10:34 AM
Advanced Member
 
Bassment's Avatar
 
Join Date: Aug 2013
Location: Ontario, Canada
Posts: 850
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 378 Post(s)
Liked: 149
Yea a compromise of SPL and extension, and also box size. 4 sub's won't effect what tuning you want, it's the box size mainly. My thoughts for SI (15 or 18), and most other HT subs, is to tune in general:

13 cu ft to 14 hz
6.5 cu ft to 17 hz
4 cu ft to 20 hz

I don't find small changes in tuning frequencies to be noticeable at all. I don't think someone could tell the difference between a 19 hz and 20 hz tuning frequency. To do large jumps in optimal tuning frequencies you need to do large changes in box sizes.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Bassment is online now  
post #27 of 30 Old 08-14-2014, 12:32 PM - Thread Starter
Advanced Member
 
randyc1's Avatar
 
Join Date: Dec 2009
Location: Montreal
Posts: 680
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 84 Post(s)
Liked: 19
Quote:
Originally Posted by Bassment View Post
Yea a compromise of SPL and extension, and also box size. 4 sub's won't effect what tuning you want, it's the box size mainly. My thoughts for SI (15 or 18), and most other HT subs, is to tune in general:

13 cu ft to 14 hz
6.5 cu ft to 17 hz
4 cu ft to 20 hz

I don't find small changes in tuning frequencies to be noticeable at all. I don't think someone could tell the difference between a 19 hz and 20 hz tuning frequency. To do large jumps in optimal tuning frequencies you need to do large changes in box sizes.

...OK last question Bassment , ...do you have any idea if my Port Velocity is OK with my
17.75" x 1.5" (26.6sq in) Slot Port ? The Area comes to a little over the same area as( 2) 4" Round ports ???
randyc1 is online now  
post #28 of 30 Old 08-14-2014, 12:58 PM
Advanced Member
 
Bassment's Avatar
 
Join Date: Aug 2013
Location: Ontario, Canada
Posts: 850
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 378 Post(s)
Liked: 149
Ya it was good


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Bassment is online now  
post #29 of 30 Old 08-14-2014, 01:02 PM - Thread Starter
Advanced Member
 
randyc1's Avatar
 
Join Date: Dec 2009
Location: Montreal
Posts: 680
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 84 Post(s)
Liked: 19
Quote:
Originally Posted by Bassment View Post
Ya it was good
Thanks soo much for taking the time to help me !!
randyc1 is online now  
post #30 of 30 Old 08-18-2014, 06:22 PM
AVS Special Member
 
chrapladm's Avatar
 
Join Date: Mar 2010
Posts: 2,762
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 161 Post(s)
Liked: 81
Glad you got it sorted.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
chrapladm is offline  
Reply DIY Speakers and Subs

User Tag List

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