Jump to content
The Klipsch Audio Community
Sign in to follow this  
Beechnut

DIY Subwoofer - lilmike's Cinema F-20 vs lilwrecker

Recommended Posts

Hey Carl,

 

What would be your top couple drivers recommendations for the F20?

I am thinking about building 1 (or 2) this fall, then I can get my 2:  25hz Exodus Anarchy Tapped Horns out of the HT room and with my Frugalhorns, where then belong.

Share this post


Link to post
Share on other sites

 

Hey Thad,

 

Ya, the Dayton Ref HF seems to be the "cost effective" option once the MFW-15 drivers were no longer available.

 

The Tempest-2 got a lot of love if price was not a concern.

 

Just wondering what in the current crop of drivers might be the best option.

Share this post


Link to post
Share on other sites

The Dayton is tried and tested.  I'd stay with that.  I haven't looked up what else would work in quite a while.

Share this post


Link to post
Share on other sites
The "20" in F-20 is cubic feet of the box not tune frequency.

 

I have heard a 20 ft. cu. box and, nothing else needs to be said, lol.

Share this post


Link to post
Share on other sites

The Dayton is tried and tested.  I'd stay with that.  I haven't looked up what else would work in quite a while.

 

Thanks Carl,

Makes sense to stick with a proven commodity.

 

It's a little slow at work today so I drew up a F-20 layout in Illustrator and output a couple size as HPs (one on paper and 1 on acetate).

As I did with my Frugalhorn and 25hz Tapped Horn builds, I will transfer the layout to the BB.

Share this post


Link to post
Share on other sites

 

The Dayton is tried and tested.  I'd stay with that.  I haven't looked up what else would work in quite a while.

 

Thanks Carl,

Makes sense to stick with a proven commodity.

 

It's a little slow at work today so I drew up a F-20 layout in Illustrator and output a couple size as HPs (one on paper and 1 on acetate).

As I did with my Frugalhorn and 25hz Tapped Horn builds, I will transfer the layout to the BB.

 

 

Fancy stuff there!  I'm forced to use a pencil and ruler.

 

You don't need BB for the F-20.  I believe it's 3/4" as well.

Edited by CECAA850

Share this post


Link to post
Share on other sites

 

Used that as well in both of mine. 

Also used 3/4 inch BB plywood. It is very heavy and not going anywhere, It really is a great sub and super easy to build. Works like a charm with all the big horns I have paired it with including K-horns, La Scalas, and the current quarter pies. 

Share this post


Link to post
Share on other sites
Also used 3/4 inch BB plywood. It is very heavy and not going anywhere

 

MDF works well also.  The plans don't show bracing but be sure you put it in.  Once you put it where you want it, weight doesn't matter anyways.

Share this post


Link to post
Share on other sites

Just placed an order at Parts Express today for 1 Dayton Audio RSS390HF and a gallon of Acry-Tech DuraTex Black.

 

My wife has a 10 day trip starting on the 14th so I will probably wait until then to start the F-20.

Share this post


Link to post
Share on other sites

Great!

 

You're going to have a lot of Duratex left over.  Plenty for a couple more projects!

Share this post


Link to post
Share on other sites

F-20 is big, but still works in a small room.  I have my R2R, the subwoofer amp, and a light on mine and it works fine.  Most people don't even know it is there...until it kicks in!

 

Dave

post-7390-0-73020000-1443617898_thumb.jp

Share this post


Link to post
Share on other sites

If you mean propped against it on the mouth end, it's the cover for the R2R.

 

Dave

Share this post


Link to post
Share on other sites

If you mean propped against it on the mouth end, it's the cover for the R2R.

 

Dave

I was wondering the same Carl, the black cabinet between the F-20 and right KHorn?

Share this post


Link to post
Share on other sites
I was wondering the same Carl, the black cabinet between the F-20 and right KHorn?

 

My TT stand.  Built it...stone top, 200 pounds of sand in the base.  You can dance in there and not affect the record...nor does a 32' pipe that shakes the rest of the house.

 

Dave

Share this post


Link to post
Share on other sites

Great!

 

You're going to have a lot of Duratex left over.  Plenty for a couple more projects!

 

Ya, I have a couple other projects that need finishing and figured I would use the Duratex...

 

I am just finishing up a pair of small speakers that I used a pair of CDT 6.5 Braxial drivers and Xovers that I reclaimed out of my old car.

They are done, other than the grill cloth and giving them a coat of Duratex.

 

Later this fall I still want to get to my Four Pi speaker build, I have had the Horns, Drivers, and Woofers sitting on my bench for well over a year.

http://www.pispeakers.com/catalog/product_info.php/products_id/105

 

Still deciding if I will Duratex my 2 25hz Tapped Horns or I may veneer them in Cherry to match the FHorns.

 

What is the shelf life like on the Duratex once it is opened?

Share this post


Link to post
Share on other sites

 

Great!

 

You're going to have a lot of Duratex left over.  Plenty for a couple more projects!

 

Ya, I have a couple other projects that need finishing and figured I would use the Duratex...

 

I am just finishing up a pair of small speakers that I used a pair of CDT 6.5 Braxial drivers and Xovers that I reclaimed out of my old car.

They are done, other than the grill cloth and giving them a coat of Duratex.

 

Later this fall I still want to get to my Four Pi speaker build, I have had the Horns, Drivers, and Woofers sitting on my bench for well over a year.

http://www.pispeakers.com/catalog/product_info.php/products_id/105

 

Still deciding if I will Duratex my 2 25hz Tapped Horns or I may veneer them in Cherry to match the FHorns.

 

What is the shelf life like on the Duratex once it is opened?

 

 

As long as you keep it air tight it lasts a while.  For extended periods, you can put a thin film of water over it but be sure you mix it in before you use it.  Don't panic when you apply it and it has a blue tint.  It will dry black. 

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  

×
×
  • Create New...