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I'm going to build a sonosub but I'm not sure which to build 15" or 18". My goal is to get more bass in the 12hz-20hz as I allready have 4 svs cs ultras. My goal is to run the 4 svs's @ 12hz and build the new sonosub tuned to 12hz. I assume an 18" sub would be my goal but alot of 15's have great xmax thus moving alot of air. I have two diff ways to power the new sub depending on power requirments....I have a 900w bash plate amp or if I need more power I have another ep2500 (I am already using one to power the svs's). I assume an 18 is what I'm looking for but some 15's have alot of xmax thus moving alot of air. So which sonosubs turn out better in the 12hz-20hz range.... 15" or 18". Which brand/driver am I looking for? I assume there is a build thread for what you guys are going to recommend (with a step by step) so a link to it would be very much appreciated.
PS I'm setting my budget at $400.00 ish which I assume should be plenty since I only need sonotube -mdf-and 1 driver.

thanks rich
 

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So which sonosubs turn out better in the 12hz-20hz range.... 15" or 18".
There's no replacement for displacement. That being said, The Maelstrom-X 18 would be hard to beat. With its 33 mm Xmax and $365 price tag it's definitely up to the task. As long as you can handle a large enclosure, like around 15 cu.ft.
 

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Discussion Starter #3
I assume there is a build thread (with a step by step) so a link to it would be very much appreciated.
 

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Here's some info on what you're getting into. Modeling shows over 116 db from 15 hz up (plus room gain) with 1400 watts input power. The port needs to be 8 inches in diameter and 34.5 inches long to deal with the port air speed. Rounding over the ends of the port is a must. This is in a tube 15 cu.ft. net volume and tuned to 15 hz. Here is the estimated SPL graph of the above modeling.

Maelstrom.JPG


Here are the tube measurements that you'll need. This design if for a tube 24 inches in diameter. Disregard the Driver specs in the bottom right hand side. That is a driver that was in the Sonosub.exe database.

Maelstrom- sono.JPG


Sonotube builds:

http://www.hometheatershack.com/forums/exodus-audio/10405-redneck-sonosub-tempest-x.html

http://www.hometheatershack.com/forums/diy-subwoofers-sealed-ported/14503-another-sonosub-build.html

http://www.hometheatershack.com/forums/exodus-audio/7308-tempest-x-15-order.html

http://www.hometheatershack.com/forums/exodus-audio/8919-tempest-x-sonotube-build-thread.html

http://www.hometheatershack.com/forums/exodus-audio/14778-my-build-tempest-x-sonotube.html

http://www.hometheatershack.com/forums/soundsplinter/13957-soundsplinter-rl-p15-build.html

If you need help with anything just ask.

Of course you will take lots of pics and post a build thread, right? :yes: :bigsmile:
 

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Discussion Starter #5
Thanks for all the info....I will list each and every step w/pics.....I'll be willing to bet that each and every pic will probably have a bud light in the background somewhere (a little like where's waldo) :>)
However I'm still trying to make up my mind on what to build (sonosub or IB). I am still thinking about an IB with 2 of the Maelstrom-X 18" drivers. Do you have any opoinions on IB vs sonosub? Would 1 18" sonosub out perform 2 18's in an IB? Buying 2 drivers would easily blow my budget but would it be worth it??? Room is not a problem either way, I have plenty of floor space and attic space..... also I live out of town so there are no neighbors to worry about. The only catch with the IB is I live in ND (its -20 as I write this) so I would need to build the IB so the drivers are in the room and port them into the attic (most of the time the box is in the attic ported into the room) but I have a pretty good idea on how to secure it to the cealing/rafters with 4x4 oak beams from the floor to the bottom of the box, all of which can be hidden behind my motorized screen. Or I still need to ask this in the IB thread but can an IB just go OUTSIDE or does it have to go into a adjacient room ar attic? (I could face the drivers at each other "inside the room" and cut the wall so the open side of the box aims outside).
any thoughts.....thanks rich
 

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Discussion Starter #7
good enough for me........thanks for everything marryxmas rich
 
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