23 replies to this topic

[Arande]

I am currently working on this project, as I am trying to get maximum extension and good sound, like we all are..

The design is basically a sonosub (25 cubic feet) 30" diameter 6 feet tall, 10" port 36inches long.. exact tuning depends on how the volume comes out and the sonotube used for the port, but around 14hz.


I am hoping for extension to at least 13hz in room.

I am attempting to take some steps towards audio nirvana, as money allows...

So I might try to get some pics up, we'll see. I may just give the information, including my impressions and differences coming from no subwoofer.

My main speakers have 12" drivers and only get to around 45hz. I have not measured the surrounds yet, but I believe they are aimilar.

[Aaron Clinton]

Pictures would be awesome, they always help the build logs. I am jealous as I was planning a sonotube for a sub but now I won't have the space.

[Deephaven]

That will definitely give your room some love.

[otis857]

Im curious about sonotubes too. I just finished reading Pat Bateman's thread on DIYMA about tapped horns and someone there made a reference to them. Is ther any web sites where you got your info on how to build them, size, driver selection, etc.?

[Arande]

I suppose I can get some pictures They may not be very good quality, of course.

Sad to hear you won't have space, hope you can make a good compromise.

Otis, I quite literally go search lots and lots of sites and that's how I get my info, all scattered around. I had to learn about room effects, parts of the signal chain, electronics in general, driver materials, what every parameter actually means and its effects (indirect and direct), etc...

But I can say if you start by thinking of what you want to achieve, that can get you far.

[Bass]

[url=http://www.subwoofer-builder.com/sonosub.htm]Sonosub - Free Speaker Design Software[/url]

free dl to get you started...cant wait to see pics!

[Aaron Clinton]

Bass, on 03 January 2010 - 09:24 PM, said:

Sonosub - Free Speaker Design Software

free dl to get you started...cant wait to see pics!

Thanks for that link!

[Arande]

Bass, on 03 January 2010 - 09:24 PM, said:

Sonosub - Free Speaker Design Software

free dl to get you started...cant wait to see pics!

Yeah, it's a good site overall as well Probably did me more good than the program


Otherwise, I got snowed out today (cutting happens outside)

I will do my best to get to it tomorrow. I've been wanting to do this for years now. Going from no subwoofer to this should be nice.

[Bass]

The best 2 things about sonosubs compared to reg boxes is ease of assembly and the lack of a need for bracing due to the cylinder.

[Aaron Clinton]

Bass, on 04 January 2010 - 03:05 AM, said:

The best 2 things about sonosubs compared to reg boxes is ease of assembly and the lack of a need for bracing due to the cylinder.

Exactly why I wanted to build one for my next build.

[sub_junkie]

Bass, on 04 January 2010 - 03:05 AM, said:

The best 2 things about sonosubs compared to reg boxes is ease of assembly and the lack of a need for bracing due to the cylinder.

Isn't it ideal to have at least some bracing for the cylinder?

[Deephaven]

sub_junkie, on 04 January 2010 - 06:57 PM, said:

Bass, on 04 January 2010 - 03:05 AM, said:

The best 2 things about sonosubs compared to reg boxes is ease of assembly and the lack of a need for bracing due to the cylinder.

Isn't it ideal to have at least some bracing for the cylinder?

Bracing is always better than no bracing.

[sub_junkie]

That is what I have thought. Maybe I could try a sonotube for my next build. I don't know though.

To the OP, what sub are you planning on using for this build?

[Bass]

sub_junkie, on 04 January 2010 - 07:25 PM, said:

That is what I have thought. Maybe I could try a sonotube for my next build. I don't know though.

To the OP, what sub are you planning on using for this build?

I think he is planning on using a Fi Audio Q 18"

Fi:

[Arande]

Deephaven, on 04 January 2010 - 07:16 PM, said:

sub_junkie, on 04 January 2010 - 06:57 PM, said:

Bass, on 04 January 2010 - 03:05 AM, said:

The best 2 things about sonosubs compared to reg boxes is ease of assembly and the lack of a need for bracing due to the cylinder.

Isn't it ideal to have at least some bracing for the cylinder?

Bracing is always better than no bracing.

Right

Bass, on 04 January 2010 - 08:11 PM, said:

sub_junkie, on 04 January 2010 - 07:25 PM, said:

That is what I have thought. Maybe I could try a sonotube for my next build. I don't know though.

To the OP, what sub are you planning on using for this build?

I think he is planning on using a Fi Audio Q 18"

Fi:

Right, it's sitting here 5 feet from me ready for action..

We have the main circles cut. Just the holes left for cutting..

[95Honda]

Those concrete forms are awesome. I have been building subs in those since the late 80s.

You don't need much bracing, they are round and meant to take alot of pressure, best use of your time and skills are to build very stout end caps.

We put accelorometers and the walls of a sonosub at an audio meeting in the 90s, the walls had about as much movement as a heavily braced enclosure someone else had that was 2" of MDF thick.

The only treatment I would do is spray the inside and out (before I put a sock of grill cloth over it) with a dampening treatment to help get rid of any wierd ringing....

I built one in 89' with 2 pyle 15" drivers (one on each end) and a 6" PVC port coming out of the middle. It looked like a big M-80 firecracker, lol...

[Aaron Clinton]

89' long?!?!?!

[Duran]

Aaron, on 05 January 2010 - 03:41 PM, said:

89' long?!?!?!

I think he meant 1989 Aaron

[Aaron Clinton]

Duran, on 05 January 2010 - 03:45 PM, said:

Aaron, on 05 January 2010 - 03:41 PM, said:

89' long?!?!?!

I think he meant 1989 Aaron

[Arande]

Haha, so far I've been held down by weather and I don't have a camera in sight..


For now, just reading...