Lbk

Ok, thanks!

The cutout hole for sub is 14.01 inches centered top to bottom. (9.25 inches from top/bottom) What is the center point measurement from the mouth panel. Thanks.

The sub cutout is 14 inches in diameter and centered top to bottom so center point is 9.25 inches out? ( top to bottom) How many inches out is the center point from the mouth panel? (side to side)

I've been running a zxpc 17 by 10 straight off chorus 11 xover and like it much better than stock(zxpc has a 2 inch opening) Was running ev dh1a on the zxpc and now running clarion 5.25, I like the clarion's better. The ev and clarion both sound good but on some material the clarion's are less harsh. For spl ev wins hands down but clarion's get plenty loud for me. This is my first 2 inch horn and to me it makes a big difference over a stock 1 inch horn.

Ok. Thanks for all the help!

Sub measures approx. 51square ft. According to PE one quart will cover 20 to 24 sq ft. So looks like a gallon to be safe.

Do you remember how much you used?

Yes in front of sub by extending the first brace. I will follow existing plans with above bracing, thanks!

I think that's good advice since this my first f 20 build. But would it help any if the brace next to sub was extended to run in front sub and connect to the mouth exit panel? Bad idea? Hpower I like the black finish on your sub, is that duratex?

Agreed but this time of year money is tight and time is not. Got a good deal on some 23/32 inch plywood and thought I would give one a shoot. If it does not work out I will build another in a month using BB. I'am anxious to hear a folded horn sub.

Since I am not using the highest quality plywood I've decide to add 3 braces. 2 like in walnut f20 build and one on the side where sub is mounted. ( No holes in braces) Maybe overkill maybe not but once finished it would hard to add them. Extra cost should be minimal and not concerned about extra weight. This thing isn't light to begin with. Carl do you remember how far the mouth brace is from front edge, looks to be about 6 inches? Thanks.

What material did use, MDF - BB?

Think I'll go for completely nuts, 23 by 32 inch plywood and not bb. Thanks for the help and pic carl !

Yea I can do that, so are there just the 2 braces like in the pic?

I have the pieces cut for an f20 but can not open the braces file. Looking at walnut f20 build pics looks like 2 braces centered, one in mouth and one in tunnel behind the mouth. Are these the only 2? If so does some one have the dimensions for these braces, thanks!

I have a diy chorus1.5 center (chorus 2 xover, diy cabinet with no radiator in rear. Upgraded to zxpc 11 by 17 horn, no room for tweeter. Drilled one inch hole in top of zxpc horn as far back as I could and mounted a de10 tweeter. Have no way to measure it buts sounds good to my ears. Easily reversible with a little epoxy and the plug drilled from horn if you don't like the sound. Looking at pics again if you do a little custom grinding on horn flanges looks like tweeter could be made to fit. Had to do some grinding on the zxpc to make it fit.

Thanks for all the replies, now I'am getting anxious to build one.

One the reasons I'am looking at it, that and the dimensions should fit my room well. It will be a couple weeks before I start so I'am going to do some more research before I commit myself. This would be my first horn sub and build.

I like wood working, I may not be the best at it but I try hard. Working a project now that I hope to finish by the weekend. Didn't know that about Jason I will keep it in mind if I need his services.

Ran my sub without mains at 80hz musicality gone. I was a little surprised I thought it was coming sub and not mains. I will say the better the sub the better the overall sound. I read about the 80hz tuning now I've proved it to myself, lesson learned. The f 20's are looking real interesting, time to do some more research. Thanks claude!

My concern was to not build a one note wonder which it seems the tapped horns are not. So are you saying since th's are crossed at 60 hz and below (unlike my now main sub at 80) the musicality should come from the mains and not the sub? I definitely hear a tonality change in my present sub. Not trying to argue just still very new at this and trying to learn. Got curious and checked the setting on my sub. I was wrong it was at a100hz. I am going have to do some experimenting.

No problem claude I understand. My room is 11 by 17 so I could fit 2 of the dts 10's across the front with 6 inches on each side. Mains L/R/C would be in front of the subs or if the f20 is superior one coffee table in front sofa. Just did some quick research and now have a direction, I am thing 1 or 2 f 20's might work. That OThorn is a beast, nice. Thanks for the help, might have to start a new after some more research.

Sorry was just looking for real world experience on how the 2 compare. My sub is giving me trouble and may need to be replaced. Seems most people use these for HT and not music.

Are these tapped horns good for music? (Musical) Any idea how they would match up to a revel b15. Thanks

Buy both and keep or sell the ones you don't like.