Originally Posted by benny blanko
Most of what I said refers to a sealed box servo system which is the only type that is practical. It is the said vendor that claims to have a 'vented box servo sub' and claims a response down to 14Hz. His words not mine !! If the servo works down to 14Hz it only makes sense to test the distortion at 15Hz. I said in a previous post to use at least two frequencies to do distortion tests just in case one of the frequencies coincides with the vent frequency and makes the results look good. This is indeed what hometheater and HiFi does.
With regards to the OP the relevance is the said vendor of the servo sub and its supporters like to distinguish it from all of the other "non servo" subs because of this so called 'servo' capability. It's only reasonable to see how good this servo capability is compared to other subs and like I said a good test for a servo sub is its distortion reduction capability at low frequencies.
The point of implementing a servo in a loudspeaker is to linearize its performance and hence reduce distortion. As well, flatten the frequency response and extend the bandwidth and lastly to desensitize the system to changes in driver parameters etc.
How did the FV15HP fair against subs that costs more than it? SVS PB13 Ultra and the Velodyne DD18+.http://www.data-bass.com/systems
I don't think any of us Rythmik owners actually believe that servo makes something inherently better...so I'm not sure what your argument is. If servo was the end all be all...everyone would use it. It's a design...just like dual opposed or whatever. Benny Blanko... I do not respect anyone who talks trash behind a screen name. Put your real name to your comments and you'd at least have a little more respect. It's soooo easy to spout off when no one knows who you are. Look me up on Facebook...you can find anything out you want about me. I may not know everything, but at least I'm transparent... for better or worse.
And why so much hate for Rythmik? Brian Ding is an incredibly nice guy and has never been out of line. He takes the time to participate in this forum and respond to people like you whom he owes absolutely NOTHING. He owes you ZERO. And yet he will come on here and participate. There are only a few owners that do this and they don't really have to. How often do you see the owners of SVS, HSU, EPIK, Velodyne, Paradigm and on and on in these threads. Brian did not start Rythmik to get rich. It was a hobby that turned into something pretty good, just like a lot of these independents. So who do you think YOU are to come on AVS behind the anonymity of a screen name and trash people. That's a joke.