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If you had 6 cubic ft and $1500...

post #1 of 21
11/20/11 at 8:40pm
Thread Starter 
Still working on this one. My wife narrowed my placement options this afternoon. I guess that I can see her point. I have been limited to directly behind the couch in our tv room. The good of this is that I can now feel good about 5 cu/ft, and I can maybe stretch to 6. The room is 2400 cu/ft, I have aviatrix speakers. I would like the best of everything (I know it is not possible) Great for music of all types, excellent for HT, bottomless extension. The cabinet will be passive, and I will soon decide on the driver/amp combo. From what I have read, I think that I would like to have a set of dual opposed 15's.

I am currently stuck running my entire rig on one electrical outlet. I don't think that big amplification is going to be in my near future. Here is my biggest problem. Which drivers...What amp?

This is way more difficult than I thought that it would be.


J
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post #2 of 21
11/20/11 at 8:58pm
One Mach5 Pi18 (or 21) or TC Sounds LMS-Ultra with a Marathon MA5050 or Lab clone FP+14000 would ideal. A smaller amp would be the Behringer ep4k. Can't go wrong with those.

That's if you want extension as low as it goes. If you're fine with ~15hz extension, use either of those drivers with dual 18" PR's. All of these options will get you around or under budget and fit your space.
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post #3 of 21
11/20/11 at 9:22pm
avia trix are relatively low sensitivity.

one lms ultra with a simple ep2500/4000 amp will keep up no problem.

maybe a ported with a 17hz tuning? three 3" ported flares 42" long in a 5 cubic foot enclosure gives you 16hz tuning.

as an alternative strategy, if you want some loud sound, a couple 18" p.a. woofers in a cab tuned to around 25hz and crossed in around 150hz might breath a whole lotta life into your system even if it gives up low freq stuff.
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post #4 of 21
11/20/11 at 11:16pm
Quote:
Originally Posted by jono2channel View Post

. I have been limited to directly behind the couch in our tv room. J

Is your couch out in the open or near/against a rear wall? There's lots of enclosure options, you just gotta think outside the box. Where the wife is concerned, there's a way to compromise and sometimes even exceed her expectations.......see above.

Imagine the normal 'couch' dimensions of 8f long and 40" tall at the headrest cushions. Now consider a console type enclosure of 12" in depth with a really nice granite, tile or finished hardwood top. Such and enclosure is capable of nearly 21 cuft of net volume. and offers form, function and high performance capabilities if executed properly. Also really easy to build.
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post #5 of 21
11/21/11 at 5:41am
Two LMS-R 15's and two EP4000's. 2-3cf for each box.
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post #6 of 21
11/21/11 at 6:21am
If you want bottomless extension, sealed is the way to go. Should work well in a 2400cf room.

2 x Mach5 Pi18: $1020
2 x EP4000: $600
1 x MiniDSP: $155

6 cubic footahs dual opposed, 104.6dB at 10Hz and 5dB more than a single Pi18 fed 4400w by an LG clone (which is only a $239 cheaper option).

Rough dimensions on a single sub with both drivers would be 36"w x 20"h x 20"d.

20Hz hits 115dB outdoors 1M. In-room, especially near-field, you'll have everything on tap you could want to use.
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post #7 of 21
11/21/11 at 6:23am
You're biggest problem by far is that you're running everything on 1 circuit.
You have a great budget for what you want to accomplish.

you need to address your electrical problem 1st.
Having an electrician come and put a new circuit, you'd still have some pretty good budget to fulfill your needs with bass.
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post #8 of 21
11/21/11 at 9:02am
Quote:
Originally Posted by BiGBADDABOOM View Post

If you want bottomless extension, sealed is the way to go. Should work well in a 2400cf room.

2 x Mach5 Pi18: $1020
2 x EP4000: $600
1 x MiniDSP: $155

6 cubic footahs dual opposed, 104.6dB at 10Hz and 5dB more than a single Pi18 fed 4400w by an LG clone (which is only a $239 cheaper option).

Rough dimensions on a single sub with both drivers would be 36"w x 20"h x 20"d.

20Hz hits 115dB outdoors 1M. In-room, especially near-field, you'll have everything on tap you could want to use.

Are there any builds floating around using these drivers? They are fairly new and model very well on paper but I was just curious if anyone has any real world experience with these drivers. I wanted to possibly try a dual opposed setup using these drivers. They seem to be a great driver at a great price.
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post #9 of 21
11/21/11 at 9:45am
Haven't seen a build thread for one yet, hopefully we'll see a few over the winter.
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post #10 of 21
11/21/11 at 11:14am
Quote:
Originally Posted by orcarola25 View Post

Are there any builds floating around using these drivers? They are fairly new and model very well on paper but I was just curious if anyone has any real world experience with these drivers. I wanted to possibly try a dual opposed setup using these drivers. They seem to be a great driver at a great price.

I see a lot of posts where people find a need to build dual-opposed subs and other than the reduction of rocking cabinets, i can't understand why. Having two, independant enclosures with placement options will do FAR MORE to improve in room response than a dual opposed monster sub. Smaller enclosures offering more placement options, lighter for sure, smaller with less panel resonance, and the list goes on and on. Hopefully this trend fades quickly as i know of no audible advantage over a single well braced enclosure to support it.
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post #11 of 21
11/21/11 at 11:25am
Thread Starter 
No placement options. Only one sub. This is how I have been told to roll.
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post #12 of 21
11/21/11 at 11:31am
Start out with any of the listed drivers in a sealed enclosure with a Behringer ep4k. Unless you need the cab to be completely free of any vibrations then you don't have to do dual opposed. Although it's not a bad idea if it works for you.
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post #13 of 21
11/21/11 at 11:44am
In this case I figured why not since it was nearfield and he only had a single wife-designated location.
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post #14 of 21
11/21/11 at 11:52am
Quote:
Originally Posted by BiGBADDABOOM View Post

In this case I figured why not since it was nearfield and he only had a single wife-designated location.

Point taken.......and supported!

I was hoping the OP would take my idea of a BIG sofa console with maybe 4 Dayton RSS390Hf's in about 5cuft sealed each. Can you say BOOOOOM!
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post #15 of 21
11/21/11 at 12:01pm
Quote:
Originally Posted by mayhem13 View Post

Point taken.......and supported!

I was hoping the OP would take my idea of a BIG sofa console with maybe 4 Dayton RSS390Hf's in about 5cuft sealed each. Can you say BOOOOOM!

I very much like this idea too but it sounded like there was a 'single' location for the OP to use for a subwoofer.
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post #16 of 21
11/21/11 at 12:02pm
Quote:
Originally Posted by mayhem13 View Post

Point taken.......and supported!

I was hoping the OP would take my idea of a BIG sofa console with maybe 4 Dayton RSS390Hf's in about 5cuft sealed each. Can you say BOOOOOM!


BOOOMY BOOM BOOM! Oops, better cut that out...don't wanna start that again...

Looks like people have some pretty good suggestions going OP.
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post #17 of 21
11/21/11 at 12:04pm
Quote:
Originally Posted by mayhem13 View Post

Point taken.......and supported!

I was hoping the OP would take my idea of a BIG sofa console with maybe 4 Dayton RSS390Hf's in about 5cuft sealed each. Can you say BOOOOOM!

Good idea. Nothing beats the WAF of something like that, I love this guy: http://www.avsforum.com/avs-vb/showthread.php?t=1340095





It sounds like we should soon have a 21" driver that would work in one of these puppies.
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post #18 of 21
11/21/11 at 12:20pm
Quote:
Originally Posted by mayhem13 View Post


I see a lot of posts where people find a need to build dual-opposed subs and other than the reduction of rocking cabinets, i can't understand why. Having two, independant enclosures with placement options will do FAR MORE to improve in room response than a dual opposed monster sub. Smaller enclosures offering more placement options, lighter for sure, smaller with less panel resonance, and the list goes on and on. Hopefully this trend fades quickly as i know of no audible advantage over a single well braced enclosure to support it.

Mayhem,
Good point!!! My apologies as my post didn't necessarily complement the OP. From what I gather, the trend you speak of regards members who are planning to use 4+ drivers in their builds. In this case, they still have multiple cabinets for smoother response as well as ouput. Considering the ratio of output to enclosure size, dual opposed is not such a bad idea if space is limited.
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post #19 of 21
11/21/11 at 9:03pm
Thread Starter 
Thanks for all of the ideas. I had not thought of the "skinny" sub situation. If I limited myself to 12 inches deep, I could probably go a little bigger than 6 cubes. I would just run this funny cabinet down the length of the couch...(Duhh!)

Does this change the driver recommendations? I could for sure port something if I did this. I just don't know if I could mount the drivers in question in a 12 inch cabinet.



Thanks



J
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post #20 of 21
11/21/11 at 9:54pm
Quote:
Originally Posted by jono2channel View Post

Thanks for all of the ideas. I had not thought of the "skinny" sub situation. If I limited myself to 12 inches deep, I could probably go a little bigger than 6 cubes. I would just run this funny cabinet down the length of the couch...(Duhh!)

Does this change the driver recommendations? I could for sure port something if I did this. I just don't know if I could mount the drivers in question in a 12 inch cabinet.



Thanks



J

If you made the enclosure nearly as tall as the couch than it could/would be MUCH larger than 6cuft!

And yes, 12" is deep enough for most drivers sans 18" and 21". And yes, porting this and tuning low would be exceptionally easy as well. It's a no-brainer IMO either way.

P.S. If using multiple drivers (4 15's for example) i'd go sealed with eQ. Usable,
flat response into the low teens
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post #21 of 21
11/22/11 at 6:22am
How about 4 of these TC Sounds Epic 12 Run 2x2 dual opposed in a 6cu ft sealed enclosure.

Alternatively you could run 4x Alpine Type-R 1243D for about the same cost.

One of these. Inuke 3000DSP

That would leave about $325 for materials, enclosure, cables and finishing

Altenatively you could run a Behringer EP4000 and a DCX2496 instead of the Inuke for about $200 more.
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