Originally Posted by jcmccorm
Yeah, that roundover looks awesome.
I'm not familiar with TLAH. What is it?
Originally Posted by Red Five
Subscribed. I keep coming back to this design. Looking forward to hearing your impression of them
Originally Posted by Rowan611
Those are turning out really well. Quite the undertaking.
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Thanks guys!! Yeah, they were a good bit of work, but just because it's tedious. I figured building the THTs was going to be the way harder build, but these gave them a run for the money! If I had just surface mounted them and made grills, it would have been a piece of cake by comparison. The finish work on the L & R really made it drag out more than I thought it would. More on that........
So I listened to the one center speaker as a Left speaker with the Polk Monitor 50 as the right and just did some tried some music and movies with both going. It was sooo much clearer than the Polk in the mid and upper frequencies, I didn't understand how the Polks made me happy in any way LOL! Running them both full range in pure mode, it was very clear that the TLAH was no 2 channel speaker haha. It absolutely got trounced in the extension department, but this isn't a concern for me since HT is my focus and I always run the subs. This was also my first chance to experience the line array vertical pattern control and they aren't kidding. When you are sitting in the correct range, it was a pretty cool effect even in mono. However, when you stand up, the response changes completely!! At any rate, I was very happy with the clarity of the high frequencies and how much better sounding male voices sounded. I really found this out by connecting my one completed speaker to the center channel. For me, this was a game changer and gave enough motivation to push forward with the plan for the L&R.
I also ran sine waves around 50hz and used a stethoscope with tube on the end to check for air leaks around the drivers, back panel, and terminal cup. This method did unfortunately find that a few of the tweeters are not sealed and were leaking air through the driver housing one way or another. So, hot glue to the rescue!!! I sealed all the openings on the backs of all 36 of them (12 already installed
). That seemed to take care of the air noise I could hear.
So I made the next two baffles and built them to be the same, but wanted to put a finish on them. Although putting all three of these behind the screen would have been the "easy button" I really wanted to see some speakers in the front and also wanted a little more channel separation than those distances would have offered. Now I did like the silver baffles from the Polks and thought the contrast from the black drivers would look pretty cool. Onward and upward then.
The rest of the box got flat black brushed on with the face masked off. Once that dried, it was time to finish the front. I used drywall spackle and primer with OH-SO-MUCH sanding + reapply. If I were to do these again with the same type of finish, I think I'd use solid wood like
did with his custom arrays. The layers were very rough where the round over was applied and took a lot of spackle to get smooth. That and the surface of the plywood made a smooth finish pretty tough to get "good enough" for me.
After that, more crossovers assembled on pegboard, speakers installed, and lots and lots of terminal soldering. I had lined all of these with a combination of denim insulation (salvaged from Amazon cold pack insulation lol) and poly batting. Nothing scientific here either, just used what I had on hand. Also, I was not good about grabbing pictures here cause I was close to the end!
And since I had planned on hanging these and changing to an AT screen, it was a bit of work to get them into place and actually get to appreciate the work put in. Next was spandex for the screen along with moving the screen off the wall by about 2.5 inches and embedding the center into the wall. If you are interested in using the Silver Ticket frame with another screen material, I showed materials and methods used over in the DIY Screen section: https://www.avsforum.com/forum/110-d...d-spandex.html