Halus 2way mltl tower

[isaeagle4031]

Latest project. A mltl 2way system using buyout Audible Physics 635-CP2 6.5" woofers and MCM 53-5615 1" al dome tweeters, Paul K was kind enough to model the enclosure and his sim vs the measurement is spot on. Thank you Paul! The enclosures are 37.5h 8w 10.5d. The top half is filled with batting. The 3"diam x 4" long port gives an fb of 42hz and f3 of 40. Nothing really fancy on construction, just 3/4" mdf and 3 braces. One behind the woofer, one at 18" and one a bit above the port. The Xover is a simple 2/3 order electrical on the woofer and tweeter respectively. While the reverse null is not particularly deep, the phase tracking is very good from about 300 to 8k. 8 parts total. I have a few other tweets I may drop in just to try. Nothing wrong with this mcm tweeter mind you. It is actually pretty darn good. Still need to build some feet and decide on the finish. It is too bad the woofers are NLA. They are well built with some great features. Hopefully, AP will be able to offer them again. The name, Halus, is Indonesian (home of AP) for smooth and that is one of the best way to describe them.

[bungelow_ed]

Very nice to see a new MLTL build, even though the woofers are NLA. I have a couple of questions if you don't mind. What is causing the 50'ish Hz peak, and would you post the driver phase tracking? I can't wait to see how you finish them!

[isaeagle4031]

The peak is room influenced. I should have graphs from the drivers as well. Will check later

[Waboo]

Yeah, nice to see some new TL action.

[donradick]

Very nice. I was over-extended during that closeout sale, so didn't jump on it as I should have.
Glad you like the APs.

[isaeagle4031]

To say that I am a huge fan of AP is an understatement. I also have their Ram series components (Ram 1, 2, 3, and 6). They are more geared towards car audio. I've become good friends with the owner. Great guy with some great gear!

[iglow01gt]

Hi, I purchased a pair of the closeout drivers also and I am interested in your build design. Can you please post your final crossover design for others to replicate?
Thank you, Tim

[isaeagle4031]

Hi, I purchased a pair of the closeout drivers also and I am interested in your build design. Can you please post your final crossover design for others to replicate?
Thank you, Tim

Sure Tim. I will do that tomorrow.

[isaeagle4031]

Here is the crossover Tim. You may, at your discretion, adjust R2 to your liking. A larger value will give a little more top end, a little smaller will just bring it down a bit. I tried from 7.5 to 15 and settled on 10 for my room.

[bungelow_ed]

Hi, Did you ever capture the phase tracking? I would like to see it as an example of good phase tracking, and what I should be shooting for with my cross-over exercises. Thanks, Ed

[isaeagle4031]

I will try to get that tonight or tomorrow Ed. Had knee surgery so i havent been in my shop.

[Waboo]

What type of knee surgery? Hope recovery goes well.

[isaeagle4031]

Arthroscopic. Repaired some damage and removed some tissue that was being pinched. I have to take a lot of stairs in my job, carrying tools that can easily weigh an additional 50-60lbs. I work in a steel mill and some of the work is 150ft from ground level. There are times I hit my 10,000 steps before 9am lol

[tomzarbo]

Arthroscopic. Repaired some damage and removed some tissue that was being pinched. I have to take a lot of stairs in my job, carrying tools that can easily weigh an additional 50-60lbs. I work in a steel mill and some of the work is 150ft from ground level. There are times I hit my 10,000 steps before 9am lol

Ditto, I hope you bounce back quickly sir! Listen to the doctors man!

TomZ

[isaeagle4031]

Thanks Tom. Seems I had a meniscus tear as well. I'm back at work and my employer is working with me (as well as my coworkers) to limit my time on the stairs. It's getting better but will take some time