Wow, here I am convinced that nothing worthwhile has been posted in this particular forum since the day the DIY forum was created, and then I find this massive thread about Chad's new subwoofer company
I just went through the whole thread, good stuff. I even see steve nn was here - man, where have I been.
Chad, great to see you posting at this place, haven't really seen you frequent a forum as steadily as you have this one for a long time. I remember you talking about this being your ultimate goal - commercial DIY subs - over two years ago when I ordered my two Avalanche 18s. I'd really like to thank you for making such a nice product at an amazing price.
Back at the time, giant subs in the home weren't nearly as "accepted" as they are now. Believe it or not, it was using your driver in a large and low tuned enclosure that really helped launch the popularity of that type of design for DIYers. You're probably very familiar with Sherv's, but I'd love to show you mine (Sherv is such a copy cat - and over a year late to the party
Your Avalanche 18 in a 650 effective liter enclosure tuned to 13hz allowed me to achieve this natural, non EQ'd FR at my old place.
Again, my hat is off to you! I wish you great success with this new product line, it seems like it is already taking off in popularity. At those prices, with that much displacement, and bucking the normal size restraints you typically see manufacturers limit themselves to, there isn't any commercial competitor that can stand in your way.
Other notes. I find it amazing how much people are amazed when someone smart like Chad goes out and sells a product line like this. I guess there really is a large segment of people who aren't willing to buy a quality driver, build their own enclosure, and save several hundred dollars. Chad's prices are great, I can't think of much out there to compete with his stuff commercially, but is purchasing a finished sub that much more attractive than building it yourself? I guess it is. Wish I had a CNC router
While Chad has mentioned he will be changing this tactic, I like the fact that he didn't talk about this stuff on forums for 5 years leading up until its launch. I like the fact that he launched and is letting his subs do the talking rather than having legions of fanboys who don't really understand how a sub works speculate about vaporware for years. I can think of a few subs out there that have been talked about for ages and still haven't produced a single db in any end user's home yet
Thing is, with this Epik line out, now they are probably screwed - better get back to the drawing board
If you're quiet, and you listen close enough, you can even hear some preorders for others subs being cancelled right now.
From a performance stand point, the use of passive radiators in a commercial design for the sake of keeping the enclosure small is definitely is not as good a solution as big port area in a larger enclosure. Chad knows this and is putting it to good use. Other options can have 20 PRs, but relatively small enclosure size will limit low end efficiency. Now you have to add some low end EQ boost into the amp, disproportionately increasing low end distortion. Also, you are paying big $$$ for those radiators, whereas a port is cheap and gets you to the same end.
Lastly, I noticed a fella in here using a Conquest with some Ascend 340s all around. I own some 340s that have gone from mains to surrounds and are now being used as rears, and I have heard them at other enthusiast's homes with large DIY subs as well - believe me when I tell you that you will NEED to upgrade your mains if you really want to get the most out of your new sub. This isn't a knock on the speakers, it's just the way it is. They will audibly distort well before your new sub ever will. If you don't plan on playing at reference levels, you're fine, but the sub will always have lots more in the tank than your speakers.