Subwoofer's Front Firing vs. Down Firing

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.

Audio is a lot more than only building it. Even at many shows often a subwoofer does not have a belanced sound as it should have. Even when the manufacturers are there at the show.

Often at shows they tell a nice technical story ( at their own frequency), but the demo is not even convincing. Hearing is believing.

They should tell about their products on the same frequency customers think about audio.

What do I hear....this is what counts!!

The people who make things often use a few brands to test. I have often asked brands like Pass Labs, Nordost and Audioquest people about their knowledge in other products of competitors. And different sources and amps they use with their own products.

I was often surprised that they knew less than I thought.

That is why I said a few times; there need to be more communication. The endresults in sound needs to get to a higher level. They need to work more togheter!!