Search found 39 matches

by caddylackn
Wed Mar 18, 2020 10:40 pm
Forum: Educational Links
Topic: Vented rear chamber horn subwoofer
Replies: 13
Views: 1538

Re: Vented rear chamber horn subwoofer

The Devastator website lists it as a 5th order Bandpass box. It requires a subsonic filter at 12 dB Butterworth at 17-20 Hz and needs 2,000 to 5,000 watts. The maximum output is listed as >133 dB at 80 Hz. I think the minimum cost "cheap" pro sound 21" driver recommended for it is $500. This is real...
by caddylackn
Thu Feb 06, 2020 12:15 pm
Forum: DR Horn Loaded Bass/Keyboard/PA Speakers
Topic: 1/8 ply board shortage... sad but true
Replies: 7
Views: 524

Re: 1/8 ply board shortage... sad but true

Rick Lee wrote:
Sun Oct 06, 2019 10:10 pm
These work very well. Easier than sheet material. Durable. It's all I ever use for DR's
https://www.homedepot.com/p/SAKRETE-12- ... /100324386
Thanks! I have been looking for an affordable alternative. I will give this a try.
by caddylackn
Sun Nov 01, 2015 9:28 pm
Forum: Build Threads
Topic: 36" THT Low Profile, Warning lots of coffin pictures
Replies: 47
Views: 9146

Re: 36" THT Low Profile, Warning lots of pictures

I would add some braces perpendicular and in between those lid braces that would stiffen it up along the other axis. While those braces stiffened up the lid in the short direction, in the long direction you could get flex. If the final placement of the speaker will put the access panel in contact wi...
by caddylackn
Sat Oct 17, 2015 7:40 pm
Forum: Build Threads
Topic: 36" THT Low Profile, Warning lots of coffin pictures
Replies: 47
Views: 9146

Re: 36" THT Low Profile, Warning lots of pictures

That is going to be heavvvy :!:

What driver are you using? What are you going to use for an amp?
by caddylackn
Tue Sep 22, 2015 11:50 pm
Forum: Build Threads
Topic: Home theater setup - TLAH, Curved SLA, SLA, THT
Replies: 28
Views: 5800

Re: Home theater setup - TLAH, Curved SLA, SLA, THT

Your THT speaker needs to be fully supported along the entire width and length during your build. The weight alone will sag the end panels enough that you will have a hard time fitting later panels and getting the panels to fit together square. Build a platform with 2" by 4" s on edge on 12" centers...
by caddylackn
Sun Sep 13, 2015 12:10 pm
Forum: Build Threads
Topic: Home theater setup - TLAH, Curved SLA, SLA, THT
Replies: 28
Views: 5800

Re: Home theater setup - TLAH, Curved SLA, SLA, THT

Yes, it is MDF. The paint soaking in differently, aka fluffing some areas. You should definitely use a sanding sealer with mdf. You brush or roll it on, and it dries fast. It soaks into the mdf and dries hard to prevent the paint from soaking in and expanding the surface. Lightly sand the sanding s...
by caddylackn
Mon Sep 07, 2015 9:06 pm
Forum: Build Threads
Topic: Yet Another Table Tuba Build
Replies: 17
Views: 2500

Re: Yet Another Table Tuba Build

What if you installed a(nother) horn around the chamber opening? It would probably have to be as long as the front horn to do anything, but I'm throwing darts in the dark here. If the extra rear horn path was as long as the front there would be serious wave cancellations as it would be 180 degrees ...
by caddylackn
Wed Aug 19, 2015 11:53 pm
Forum: Build Threads
Topic: Home theater setup - TLAH, Curved SLA, SLA, THT
Replies: 28
Views: 5800

Re: Home theater setup - TLAH, Curved SLA, SLA, THT

you can also take a fine tooth hand saw or hack saw and trim the plastic cover of the tweeter until it fits. A chop saw with a plywood blade and a stop block works good if you are careful and cut slow. The cut won't show if it is rear mount.
by caddylackn
Mon Aug 03, 2015 11:31 pm
Forum: Build Threads
Topic: 4 THT's
Replies: 42
Views: 5135

Re: 4 THT's

I'd be interested in hearing what other people have done for equalization :?: I have a calibrated Behringer microphone with a reasonable focusrite USB soundcard and a collection of software including ARTA. Someone will correct me if I am wrong, but with the THT for equalization, all you need do is ...
by caddylackn
Sun Aug 02, 2015 11:34 am
Forum: Build Threads
Topic: 4 THT's
Replies: 42
Views: 5135

Re: 4 THT's

A tip, I found some "plugs" for adhesive/caulk tubes in Home Depot, very long center pin with an airtight seal on top, they should work, I'll report on the effectiveness. I bought this one, it works alright for awhile. The PL tube pressure will blow this tip off the tube unless you store the gun pl...
by caddylackn
Fri Jul 31, 2015 12:22 am
Forum: Build Threads
Topic: Narrow THT Build
Replies: 27
Views: 4177

Re: Narrow THT Build Follow up?

How did this cabinet end up? The build was impeccable. The selected driver was a little out of spec. I hope there was a happy ending to all this effort. We are left hanging... :conf:
by caddylackn
Wed Jun 10, 2015 10:02 pm
Forum: Build Threads
Topic: Wedgehorn 8's w/ horn finishing option
Replies: 82
Views: 8633

Re: Wedgehorn 8's w/ horn finishing option

Bill's plans are a lesson on both being patient and following directions. If you are not patient in reading and following the directions, it will bite you.

The good news is PL and Duratex will fix and cover up most mistakes :oops:
by caddylackn
Fri May 29, 2015 11:41 pm
Forum: Build Threads
Topic: Narrow THT Build
Replies: 27
Views: 4177

Re: Narrow THT Build

I have built a ton of cabinets, and the only joints that really need to be air tight and perfect for cabinets are the face frame butt joints, which really isn't that many joints or that many linear inches of perfectly tight butt joints per cabinet. The rest of the cabinet joints are in some sort of ...
by caddylackn
Sat May 16, 2015 12:18 am
Forum: Build Threads
Topic: 9 driver Curved SLA build
Replies: 20
Views: 3751

Re: 9 driver Curved SLA build

What? They don't have Deschutes Black Butte Porter there?
If you are going to go with dark stain you should go dark beer...

Unless, for safety reasons, you purposely go the opposite so you don't accidentally drink a swig of stain while working.
by caddylackn
Mon May 11, 2015 11:49 pm
Forum: Build Threads
Topic: Table Tuba 18 inch starts
Replies: 25
Views: 3944

Re: Table Tuba 18 inch starts

Started glue up tonight. I haven't added baffle panel...so I'm completing it out of strict order. It is very important that you test fit the driver into the baffle opening with all the screws to check for clearance and rubbing and make clearance adjustments if needed. Don't install so many panels t...