Vandersteen Sub woofers v Rythmik Subs

hz is in the music they will reproduce it well. my understanding is the 9 is for larger rooms, more spl and tge driver is optimized for a very narrow range like 60 hz and down, hence the choice of driver.....

every now and then, often near the end of a listening session with the 7’s and most likely a nice bottle of Red, i imagine them in the corners.......how could my wife notice them ???????????

hz is in the music they will reproduce it well. my understanding is the 9 is for larger rooms, more spl and tge driver is optimized for a very narrow
range like 60 hz and down, hence the choice of driver.....

So the built in subs in the model 7 still handle the upper bass and only the super low frequencies are handled by the 9s? Make sense since the super low frequencies wouldn’t need drivers that have to be as fast and can focus more on pressurizing the room

Thanks for the link bstat. I was a little disappointed in the design of the subs. They seem a bit stark, but I guess after looking at the 2wq's for so long, any change would be unsettling. The good news is that they are a bit more compact (17x20x21 vs. 24x24x24), so should be much easier to place.
B

bstat....my first sentence got cut...

it was :

9 was developed to use with primarily 7, perhaps quattro for very large room, higher spl needs....the 7 in particular with the aluminum cone push pull built in sub is capable of amazing bass...the 9 is literally a below 20-60 hz machine where a large driver is needed or best suited for the duty cycle, etc.....

i will say ( again ) you might want to look for a pair of 5a......

Jim
Sole Survivor Proprietor- Dusk to Dawn Audio, Ltd 

" Even when a stand up bass is located left in the soundstage, the speakers make the sound come from that position perfectly even though the sub is in the right corner."


Hello mr_m,

     I find this to be is a very interesting phenomena of human hearing that I think is important to realize when we're setting up our systems for optimum bass response in our rooms..
     When I first installed my  Audio Kinesis Debra system, I was concerned how bass emanating from 4 subs arrayed throughout my room would affect my system's sound stage illusion normally spreading from wall to wall and sometimes wider while varying in how many seemingly feet in depth depending on the quality of the recording. 
     These 4 subs are run in mono and I was wondering if I'd still be able to perceive bass instruments as being located properly and precisely within this sound stage illusion.  This very life-like illusion on good recordings is something I really enjoy and didn't want to lose.
     Fortunately, the sound stage illusion was even more palpable and life-like with the Debra in place.  The locations and spacing of Instruments and vocalists within the sound stage illusion were only enhanced.  Even though the bass is in mono and the bass sound waves are coming from 2 subs along the front 16' wall and one along each of the 23' long side walls (about 4' in from the back 16' back wall with my listening seat centered on this back wall),  I always perceive the bass as coming from the proper position within the sound stage illusion at the front of my room on both music and ht.  I  perceive no bass emanating from the 2 subs closest to my seat, just from instruments and voices within the sound stage illusion.   
      I'm very pleased with this bass response and illusion but it is odd how we humans perceive sound; a combination of our ears receiving the sound waves and our brains processing them. 
     I think this affect should be considered as a factor in room acoustics when assembling a home audio system.  I believe this phenomena can be explained by the fact that bass sounds are rarely just bass frequencies and typically have harmonics exist that are at above bass frequencies.  Humans are poor at identifying the location of low frequencies but much better at doing so as the frequencies rise into the mid-range and treble range. 
     I think the scientific explanation is that the higher frequency harmonics of bass sounds allow our brains to better place the source of bass sounds/instruments in the sound stage illusion.  I realize this may be an oversimplification and the actual ear and brain relationship is likely much more complex, but I think it adequately describes the process.

Tim