Need help deciding on speaker box for SI18s - AVS Forum
Forum Jump: 
 
Thread Tools
post #1 of 13 Old 05-23-2014, 09:45 PM - Thread Starter
Newbie
 
abuwow's Avatar
 
Join Date: Apr 2013
Location: NW MN
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 11
There are so many builds here I like and want to do, but was wondering if anyone could recommend what may be best for me to try first.

I have 2 SI18 D2 and a inuke 3000dsp

Room is about 6000 cubic feet, will be only used for movies, the lower the hz the better, don't care about waf, have the tools and want a project so not interested in flatpacks.

I really like notnyt sealed and ported builds, and like I could have both subs in same box, but unsure how well that would end up for what I have purchased already and only having 2 instead of 8 of a better quality.

Otherwise was thinking a couple mini martys, or dual opposed and sonotubes look fun. IB is about the only thing I haven't really considered.

Anyone in MN want to buy a Outlaw? tongue.gif

Thanks in advance,



Bob
Bombelman likes this.
abuwow is offline  
Sponsored Links
Advertisement
 
post #2 of 13 Old 05-24-2014, 12:52 AM
Senior Member
 
Bombelman's Avatar
 
Join Date: Nov 2013
Location: Paramaribo
Posts: 252
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 31 Post(s)
Liked: 41
Hi Bob, why not a "full marty" or something with similar internal volume ?
abuwow likes this.
Bombelman is offline  
post #3 of 13 Old 05-24-2014, 05:45 PM
Advanced Member
 
asarose247's Avatar
 
Join Date: Mar 2010
Location: SoCal
Posts: 597
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 105 Post(s)
Liked: 62
check out ' kevings" marty build thread. he and I build a full marty in under a week and that was only a few days work. its 3/4 ply and kreg screws let you run full tilt in construction .

Denon X5200 , Emotiva UPA7, for 7.3.4 ATMOS/DSU
Klipsch FL/FR: F3 , Center: Icon 25 , SL/SR: RC3II , SRL/SRR :Icon 36 Towers, TF & TR: SLX
FH :RB51's
2 30" BF THTLP'S and SUBMAXIMUS and Inuke6000DSP
SHARP 80" LED/LCD, Xbox1 PS4 Panny BD 220
asarose247 is online now  
post #4 of 13 Old 05-24-2014, 05:50 PM
Advanced Member
 
randyc1's Avatar
 
Join Date: Dec 2009
Location: Montreal
Posts: 755
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 127 Post(s)
Liked: 29
With 6000cuft and 2 SI18D2 ,...probably best going to with 2 of the biggest martysubs.

Wire each D2 Driver in series for 4ohms x 900W on each channel.

... If you would of had D4's , they could of had been wired for a 2 ohm load X 1500W each.
abuwow likes this.
randyc1 is offline  
post #5 of 13 Old 05-24-2014, 06:17 PM
AVS Special Member
 
chalugadp's Avatar
 
Join Date: Jan 2013
Location: Vancouver, BC, Canada
Posts: 5,888
Mentioned: 29 Post(s)
Tagged: 1 Thread(s)
Quoted: 1383 Post(s)
Liked: 1227
Remember that inukes 900 is actually 600 and 1500 is 1100 watts.
randyc1 likes this.
chalugadp is offline  
post #6 of 13 Old 05-24-2014, 06:19 PM
AVS Special Member
 
Sibuna's Avatar
 
Join Date: Apr 2010
Location: Western NY
Posts: 2,269
Mentioned: 21 Post(s)
Tagged: 0 Thread(s)
Quoted: 287 Post(s)
Liked: 350
Sibuna is offline  
post #7 of 13 Old 05-24-2014, 06:21 PM
Advanced Member
 
JohnDean's Avatar
 
Join Date: Jul 2012
Location: Franklin, TN
Posts: 568
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 105 Post(s)
Liked: 62
Hell, wire them both on one channel and preorder 2 more.
JohnDean is online now  
post #8 of 13 Old 05-24-2014, 11:45 PM - Thread Starter
Newbie
 
abuwow's Avatar
 
Join Date: Apr 2013
Location: NW MN
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 11
Thanks for the replies. I think I will plan to build a couple full martys. But I still like the idea of both in the corner in the same box like notnyt has, but unsure if I can pull it off with what I have or if the martys would perform better for me. The corner is also where my subs always sound the best and where I have the most room also.




Should I plan to run in series one sub per channel for 4 ohm or would it be safe or wise to run bridged for 2ohm?

Would it be worth while adding 2 more sub on same amp? The long term goal was to maybe get another 3000dsp and 2 more subs, but if I could just add speakers and make a worth while addition I guess that would be pretty nice.
abuwow is offline  
post #9 of 13 Old 05-25-2014, 09:37 AM
Advanced Member
 
randyc1's Avatar
 
Join Date: Dec 2009
Location: Montreal
Posts: 755
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 127 Post(s)
Liked: 29
Quote:
Originally Posted by abuwow View Post

Thanks for the replies. I think I will plan to build a couple full martys. But I still like the idea of both in the corner in the same box like notnyt has, but unsure if I can pull it off with what I have or if the martys would perform better for me. The corner is also where my subs always sound the best and where I have the most room also.




Should I plan to run in series one sub per channel for 4 ohm or would it be safe or wise to run bridged for 2ohm?

Would it be worth while adding 2 more sub on same amp? The long term goal was to maybe get another 3000dsp and 2 more subs, but if I could just add speakers and make a worth while addition I guess that would be pretty nice.

You cant add 2 more SI 18 with the NU3000, you would need another Amp
randyc1 is offline  
post #10 of 13 Old 05-25-2014, 12:29 PM
Advanced Member
 
JohnDean's Avatar
 
Join Date: Jul 2012
Location: Franklin, TN
Posts: 568
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 105 Post(s)
Liked: 62
Quote:
Originally Posted by randyc1 View Post

You cant add 2 more SI 18 with the NU3000, you would need another Amp

I thought the nu3000 would do 2ohm stereo. If so 2 18d2 on each channel would work. Am I missing something?
JohnDean is online now  
post #11 of 13 Old 05-25-2014, 02:13 PM
Advanced Member
 
randyc1's Avatar
 
Join Date: Dec 2009
Location: Montreal
Posts: 755
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 127 Post(s)
Liked: 29
Quote:
Originally Posted by JohnDean View Post

Quote:
Originally Posted by randyc1 View Post

You cant add 2 more SI 18 with the NU3000, you would need another Amp

I thought the nu3000 would do 2ohm stereo. If so 2 18d2 on each channel would work. Am I missing something?

Yes the NU3000 can do 2x 1500W @ 2omhs,.... the problem is with 2 18D2 on each channel they would be UNDERPOWERED. Each Si18 need 1500,W.. (in reality it's 1100W on the NU3000) ,which is perfect for 1 SI18 @ 2 ohms ,..and with 1 DVC D2 you cant get 2 ohms , either 1 ohm or 4 ohms ?

Only a single (DVC D4 )can be wired for 2ohms , each 4 ohm coil wired in parallel for a total of 2 ohm.

Kinda confusing i know?
randyc1 is offline  
post #12 of 13 Old 05-27-2014, 10:20 PM
Senior Member
 
saginawjuggalo's Avatar
 
Join Date: Nov 2006
Location: Saginaw, MI
Posts: 348
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Liked: 14
You will be fine running 2 per channel even if underpowered. I know the iNuke 3000 puts out less than the EP4000, but try it first before buying another amp. You have nothing to lose. I started with 2 SI HT 18 D2's (4.0 cu ft sealed / wired into 4ohm) off an EP4000 and noticed a nice upgrade when going to 4 18's (2ohm per channel). Gaining around 300RMS each and the extra displacement made a nice noticeable difference. I think this would keep a lot of people happy. When I feed all 4 @ 650RMS each I noticed another nice step up.

I now run 8 D2's off 2 EP4000's, They see a bit less then 500RMS each and absolutely punish my home and move the cones nicely excursion wise (during low Hz).

^Those are give or take tested watts. Not the inflated watts Behringer rate their amps at.

I tested things in a 3600 cu ft open L-shaped basement. My personal opinion is you should have more firing power for a 6000 cu ft room. Especially if you don't have the low frequency reinforcement concrete basements offer.

Since you want the lowest frequency, multiple sealed and lots of watts! If that's beyond your budget, start with 4 18's in HUGE ported enclosures.

BTW: If Infinite Baffle is possibility you would save a bunch of $ not needing box materials. Not to mention you only need a fraction of power! More $avings smile.gif Testing is order to know if the location provides a good frequency response at you your listening position. Nothing like nulls taking all the fun out of it. I hate hearing about Integration problems after installs.

Multiple sealed boxes are great because you can easily move them around your room and naturally flatten frequency response. I can fit my 4.0 cu ft boxes in a lot of locations.
abuwow likes this.

HD DVD [R.I.P. 02/19/08] :(
Blu-Ray: 1200+
saginawjuggalo is offline  
post #13 of 13 Old 05-28-2014, 08:46 PM - Thread Starter
Newbie
 
abuwow's Avatar
 
Join Date: Apr 2013
Location: NW MN
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 11
Nice, thank you guys for the help, I think I'll plan to build full size martys and run 4ohm for now and probably change things up this winter.
abuwow is offline  
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