Is there much audible difference between a 15" & 18" subwoofer?

[Adaboy]

So by audioholics standards you have a medium sized room.

So you're almost looking to use the dual 10"s as mid bass modules?

If I were you I'd put the new sub up front and the smaller ones at the rear.

Yes, I was thinking since they are sealed they would be plenty punchy and would make decent mid bass drivers. What do you think?

Also putting a large sub up front wouldn't fit unless I moved the stand that is holding bigfoot and placed the center on top of it. I don't think it would look very good and then when I install my projector screen it would limit my screen size since the ceiling is so low.

 

[fuzz092888]

As long as the screen is acoustically transparent you can have the sub behind it without hindering the sound. I'd like to see the bigger sub up front just because it will be easier to pressurize the entire room from that position than from way in the back.

I'd also probably stack or place them side by side with the smaller ones and run them as a single sub from a front position.

Part of the reason I'd run the 10"s as one sub is that they'll get a 3db bump be closer in output to whatever 15"

Then you could have a diagonal arrangement like is mentioned in one of the audioholics setup guides.

What are you using for sub EQ? That's what will be most important to all of this. If you have multiple subs, audyssey multi XT32 is really what you need. It makes a huge difference for multiple subwoofers. No matter what subs you get, without good EQ you'll never get the most out of them, unless your room is naturally awesome. Somehow I doubt it would be with the big L shape and all.

 

[Adaboy]

Thanks Fuzz,

Stacking them just won't be an option for me. I'll have to place the larger sub in the rear.

I currently have the Audyssey MultEQ ET on my Denon 3312ci. I'm going to see if I can upgrade that.

Lol I don't think my room would be naturally awesome alone, so I'll check and see what I can do to upgrade the Audyssey.

Thanks

 

[Steve81]

Yes, I was thinking since they are sealed they would be plenty punchy and would make decent mid bass drivers. What do you think?

Depending on what you pick, it may not be necessary. Something like an Epik Empire for example has no need of mid bass modules to supplement its output (this is not to say that a second sub to smooth the response wouldn't still be useful). It's use goes down further since your speakers are hardly what I'd qualify as wussy little satellites struggling to get down to 80Hz.

 

[Adaboy]

Thanks Steve, so my question is should I limit them to 50Hz or 30Hz?

 

[Steve81]

Thanks Steve, so my question is should I limit them to 50Hz or 30Hz?

I wouldn't worry about it at this point. When you get your new subwoofer in room and see how it performs/measures on its own at your listening position(s), then you can think about if and how you want to implement your old subwoofers.

 

[nthydro]

Man I think a 12" sub is big already, an 18" is just massive. Could probably double as a massage chair

 

[Adaboy]

Man I think a 12" sub is big already, an 18" is just massive. Could probably double as a massage chair

Isn't that ultimately what we want?

 

[Jeff R.]

In my 3.2 system I basically use my dual sealed 10" eclipse subs like a MBM. They pick up from my towers at 90hz and start to roll off at about 40hz pretty steeply. So I do not put any equalization from my reciever to help them out below the 40 hz point. I then use my ported 12" RBH in parallel and boost my volume level on the RBH up and use the plate amp on the back to cross it over at about 40 hz to go down lower. It works quite well. I am sure if I had some hand held meters and a bass management system it would be better though.

It can definitely be done.

 

[lsiberian]

Man I think a 12" sub is big already, an 18" is just massive. Could probably double as a massage chair

My 12" sub can give massages. Is the OP wanting to build a sub or buy one?

Not all 12" drivers are created equal. Epik, SVS and HSU are all good options in your budget.

 

[sterling shoote]

Consider the JBL 4641. This 8 ohm passive 18 inch sub is likely what you hear at your local cinema. It sells for about $900. With a suitable power amp putting out about 600 watts of power you will be satisfied for sure, even in a relatively small space.