Subwoofer's Front Firing vs. Down Firing

I have a sealed downfiring REL, but I turn it upside down and use it upfiring. I find this to produce a more accurate, and quicker sound in my room. It's not in a corner either, but between the speakers. I do place a board on the upturned feet with something heavy on top of that.

Experiment, it pays off in spades.

I sold in the past many many REL subwoofers. The material of my PLW-15 is made from ceramics. This is a lot lighter compared to the material REL is using. This makes a big difference in response. I have told this a few times.

It is very easy to understand when you hear the difference in response. Subwoofers can reach a much higher level for integration when the material is lighter.

Timing is the key for succes regarding integration!!

Quote: "It is very easy to understand when you hear the difference in response. Subwoofers can reach a much higher level for integration when the material is lighter"

Cone mass in itself does not change response, you must have a motor structure to match... lighter mass in itself offers low QMS/QTS, which in turn requires ported or vented boxes... Adding mass lowers FS and raises QMS/QTS, kinda goes against your theory of must using a sealed box... of course you can use less motor structure, but now you deal with a higher FS and VAS problems... The entire driver is a balancing act... a lighter cone material in itself does not tell the story. Not trying to start a war, but those are the facts

I take back my earlier post. Clearly people with knowledge can make firm assertions.

Clearly Duke and Tim do not have enough sales experience to know how a subwoofer works. But it is fun to watch Bo school two guys, who actually know how to build a speaker, on the finer points of subwoofer design. I for one hope it continues to see how deep the hole gets.