Originally Posted by wfmiller
I also run my dual PB4Ks in Extended Mode and will never go back. My 14 yo granddaughter that lives with us came in with 5 of her friends and asked if I would play a little demo for them as her one friend showed off his father's speakers. They all sat down and I played a Dub drop and we watched the reactions of the kids which was priceless. They all jumped off their seats with astonished looks and laughed for the next 10 minutes. I did not even have it up that high.
Originally Posted by Islandborn
WFmiller-Thanks for the feedback. Still on my work stretch so I can't wait to try extended mode out on my next day off.... I'm hoping exteneded mode will get me feeling that bass in my chest and skin vibration that I like!! I have felt it a few times in standard mode, but I really got to crank the trim up to get that feeling... I'll post back my findings!
Originally Posted by Islandborn
So I tried extended mode and for me with my setup and room size, extended mode didn't provide a better experience
Music and movie content although more tactile was a lot more boomy/muddy sounding down low, and in the upper range I lost a lot of the base that I like when playing at the volume I like to listen at.
Oh well, still sounds great either way, I am just a perfectionist and want the sound to be perfect, although perfection is hard to achieve when your dealing with room acoustics, gear, etc.....
Originally Posted by microwiz
I love the extended mode but you are right, if your room isn't setup to deal with those low frequencies it doesn't matter how good the sub is. Before I added bass traps boomy and muddy was what I got now it's just smooth and powerful just the way I like it.
Originally Posted by DarkEnigma
I usually agree here and in clips like the force awakens interrogation scene the extra 16~17hz output is extremely noticeable. But man, I just watched Godzilla:KOTM in standard mode and it delivered a much better experience than extended.
I don't get that ear/body pressurization effect in the 16hz mode at all that I used to get with my PB13s in standard mode. I thought upgrading to the 16s would do the trick and let me have the best of both worlds, but even though the 16s in extended mode match the 13s SPL in standard they still don't give me that pressurization effect that the standard mode does.
This topic is interesting to me, so I thought I might offer some random thoughts on the issue of using Standard versus Extended mode on the PB/PC4000 or on the PB16. First, although most of us would like to find some sort of certainty with respect to issues like this, our rooms, listening material, and personal preferences vary so much that it's hard to do. Some of us are inevitably going to differ with respect to which setting works better for us.
The actual differences between the two port tunes are pretty subtle from about 20Hz to 120Hz. Looking at the PB16, from 20Hz to 40Hz, the Standard mode has approximately 1.5db more SPL of max output. Above 40Hz and up to 50Hz, there is a 1.0db difference. Above 50Hz and up to 100Hz, there is a 0.5db difference. And, the two modes are equal at 120Hz.
The real difference is in frequencies below 20Hz. Starting just below 20Hz, the Extended mode pulls strongly away from the Standard mode. At 16Hz, there is a whopping 9db difference between the two. At those frequencies, a single PB16 in Extended mode is equivalent to having 3 PB16's in Standard mode. You can compare SPL capabilities of the PB16 modes, in the following link. PB/PC13 and PB/PC4000 comparisons would be very similar.
To a large extent, the room dictates whether frequencies below 20Hz will sound boomy or not. Subwoofer placement and the type of room EQ employed can have a strong impact on that. Below 20Hz, it is very difficult to distinguish what we are hearing from the tactile sensations we are feeling, so how much low-bass TR (tactile response) we like can also be a factor in what we prefer.
The floor surface and overall room construction can also be very important in determining what we like. Very low-frequencies, in a strongly built brick house on a concrete floor, can sound/feel very different from the same frequencies in a frame house on a suspended wood floor. Room and floor resonances can strongly influence what we hear below 20Hz. Those factors can definitely influence our preferences for lower versus higher tuned subwoofers (or even for the preference for ported versus sealed subs).
There are a few other things that I thought might be helpful to mention as people discuss their preferences. First, room treatments are only effective down to about 60Hz or so. Even very large bass traps won't really make any difference at all below 20Hz. Room construction, room EQ, and our own preferences for low-bass TR--deep rumbling/thudding sensations are probably the most important factors there.
Second, chest punch is a mid-bass phenomenon. Most people feel those sensations from sudden percussive sounds in a frequency range from about 50Hz to 100Hz (where the Standard mode is about .5db stronger than the Extended mode). There is some evidence that most people feel the strongest chest punch sensations at about 63Hz, and SVS has built-in PEQ at that frequency in the models we are discussing.
Owners with PB/PC4000's or PB16's, who want more chest punch, can set their subs to Music mode. That mode applies about a 3db boost, centered on 63Hz. That is the only difference between the Movie mode and the Music mode. Since chest punch is primarily volume-related, that can work well in some cases. More SPL equals more chest punch. But, of course, there still has to be sudden percussive mid-bass content in the listening material.
Third, the skin crawling, ear tingling, compression feeling that has been mentioned is literally related to the air compressing inside a room. The more tightly sealed the room is, the more that sensation can be felt. That sensation is similar to what we feel when an airplane pressurizes, but on a more subtle scale. As with chest punch, and low-bass TR, some people like that sensation more than others. Simply increasing the overall volume of the subs, in a tightly sealed room, should increase that pressurization sensation, for people who want more of that.
Personally, I think it is very difficult to find a single setting which works well for everything (much less for everyone). Speaking only for myself, I don't like nearly as much low-bass for music as I do for movies. And even for movies, my subwoofer volume can sometimes vary quite a bit, depending on the movie, and on my moods. Some movies have more ULF content, recorded at louder volumes than others. And sometimes, I'm really looking for more excitement in the bass special effects, and sometimes I'm really not.
If, however, I wanted to combine low-bass excitement with more mid-bass chest punch and overall room compression, I would use a combination of Extended mode, Music mode, and subwoofer boost to get it. Since there is only about a .5db average difference in the mid-bass frequencies, between the two modes, most people could probably obtain as much additional mid-bass as they wanted with another decibel or two of sub boost, in Extended mode.
Unfortunately, there is one caveat to that. If you really don't find the low-bass TR appealing, then turning-up your subwoofer volume in Extended mode, to get more chest punch or more room compression, will also increase those low-bass frequencies that you might not have wanted. (And, it will also use up your total subwoofer headroom a little faster, if you are already near the edge.)
When you increase your subwoofer volume in either the Extended or Standard mode, the relative proportion of low-bass to mid-bass will, to some extent, remain the same unless you have a way to tailor your frequency response a bit. Deciding what proportion of low-bass to mid-bass we like, for a particular type of listening material, is part of the challenge in my opinion. Depending on room construction and personal preference, the Standard mode may still offer the best overall compromise in some cases.
[I decided to add an edit to clarify something about the preceding paragraph, but it may actually make things more confusing.
We don't perceive loudness increases for all of the bass frequencies in exactly the same way. Due to an idiosyncrasy in the way our hearing works, an increase in SPL below 30Hz sounds louder to us than the same increase in SPL at 60-80Hz. There isn't a night-and-day difference, but turning-up the volume on a low-tuned sub would actually emphasize the very low-bass frequencies just a little more, to our perception of loudness, than it would the mid-bass frequencies.]
FWIW, the more expensive SVS models do offer us a good deal of user adjustability that we can experiment with in order to best serve our own preferences. I think it also helps if we are willing to tinker just a little bit, depending on the particular listening material, and depending on our own moods.