Howdy folks. Wanted to post a pic of the Altec DIY build I've been working on for the last year since first acquiring a pair of 416-8Bs. I had initially planned on building the Hiraga Onken 360s but decided in the end that a slightly beefed up 620A cabinet would work best in my space.
Some of you may remember when I posted asking for crossover advice but the idea was to have an interchangeable front baffle in case I ever wanted to try different drivers (Tannoys, 604s, JBLs) and I also wanted to be able to swap horns and compression drivers up top. I liked the design and look of the Model 17 and the 620A cabinets but decided to go 2" deeper and 2" wider to gain a little more volume which ended up being about 10 cubic feet.
I'm lucky enough to have a friend who is an amazing speaker builder and woodworker who mentored me along the way and helped with certain elements of my build.
We bought some of the last Baltic Birch we could get our hands on and after some woofer sweeps, lots of back and forth, some drawing and some more drawing in Sketchup, we got to work.
Due to my work schedule, I could only attack this project whenever I had spare time which is why it ended up taking a year. In the long run, I'm glad I didn't rush the build (as much as I may have wanted to at times).
Needless to say, I'm very happy with how they've turned out though I haven't quite had as much time as I'd like to just listen and enjoy them. I know that will come and they do sound excellent. Will try to post some more pics and info soon but just wanted to share this pic we took before they left the shop last week.
Cheers!
Mike.
PS More images on IG here if you want to check it out.

Some of you may remember when I posted asking for crossover advice but the idea was to have an interchangeable front baffle in case I ever wanted to try different drivers (Tannoys, 604s, JBLs) and I also wanted to be able to swap horns and compression drivers up top. I liked the design and look of the Model 17 and the 620A cabinets but decided to go 2" deeper and 2" wider to gain a little more volume which ended up being about 10 cubic feet.
I'm lucky enough to have a friend who is an amazing speaker builder and woodworker who mentored me along the way and helped with certain elements of my build.
We bought some of the last Baltic Birch we could get our hands on and after some woofer sweeps, lots of back and forth, some drawing and some more drawing in Sketchup, we got to work.
Due to my work schedule, I could only attack this project whenever I had spare time which is why it ended up taking a year. In the long run, I'm glad I didn't rush the build (as much as I may have wanted to at times).
Needless to say, I'm very happy with how they've turned out though I haven't quite had as much time as I'd like to just listen and enjoy them. I know that will come and they do sound excellent. Will try to post some more pics and info soon but just wanted to share this pic we took before they left the shop last week.
Cheers!
Mike.
PS More images on IG here if you want to check it out.

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