Subwoofer

"regarding cone material.....Rythmik’s Brian Ding recommends AGAINST crossing-over his aluminum coned subs at higher than 80Hz "

I understand because the are too slow, and cannot handle more. This is a limitation, you never should choose for audio tools which have limitations. Most tools/products in audio have limitations and that is why you should never buy them.

A full aluminium cone is also not the right material. You can use aluminium, but....just for a part. That is why ceramics with aluminium works better.

When you compare and test subwoofers who are able to be used till 120hz or higher they outperform the paper subwoofer with ease.

Audio needs to be used to find those products which give the best result, all other inferior products does not add anything to the world of audio!

I wish you would stop saying some subs are "too slow" bo1972. Bass is slow because it is supposed to be. I can almost guarantee if the bass is tight and fast it's because the sub is not going down to it's desired frequency. When's the last time you heard a 10' kettle drum or an acoustic bass?
Another thing. All audio components have limitations. Everything built has some limitation. A sub that works up to 120hz is easy. Making one work at 15hz is harder.

I will explain it once again: I compare and test all the time. The only thing what is important in audio is that those products who give the best results do matter. All the other products doens’t make sense.

Even te brand does not matter, because when another brand can give a better result, this will be the new reference.

When paper subs would be better than ceramic subs I would want them and sell them. But all results gave the same answer.

When I would get better results at 80hz, I would use it all the time. But 120hz makes clear that it is a lot better. That is why you need to test and compare all the time.

Over and over again......

And yess all products are not perfect. But only when you are aware of all the properties ( d.n.a. of a tool) it owns you could be able to use them.

When I ask to people; tell me the properties of the product you own or sell? They can’t answer it. This means that you will never understand what you are doing.

When I asked a few people who work in audio for a long time and who sell highend about properties they couldn’t tell.

When I asked them but tell me then how the sound and stage is build, they could not tell. So they said: I guess you are right that this way it is difficult to control the sound.

So I said: it is not about the fact if I am right. You need to understand that the way you use audio never will work that well.

Bo1972's assumption that audiogon posters somehow miss the boat on great sounding audio due to lacking his 6 years of sales experience, combined with his inability to respond to posts from far more sophisticated audiophiles (many exhibiting near zen-like patience with his drivel, unlike myself) pretty much says it all. Bo…your posts continue to make you seem utterly clueless…Bo…really…you may need professional help…I might know a therapist in the Netherlands I can recommend…Bo...