Originally Posted by Russ_130
So after a lot to research and chats with svs I decided to go with the pb-3000. The only thing is I’m not getting any chest slam like I was expecting. There are in a 12 by 12 room with 8 foot ceilings closed off by a door. It’s running off a denon avr x3600. What could I do to get that slam. I even put my volume way louder to see if I get any slam but I didn’t. Any suggestions? Do they need to bake in?
The whole issue of how to feel more chest slam, or chest punch as I tend to call it, is a little complicated. The video that was recommended has some helpful hints, regarding making sure that you are not dealing with room issues, but it is also not entirely correct. The only thing I will say about that is that determining the frequencies where movie scenes have the highest volume levels, at the same time that people are experiencing chest punch, is not the same thing as determining the specific frequencies where most people are actually feeling that sensation.
There have been a number of studies done to determine where most people feel chest punch, including one conducted by Audioholics, and they have all placed the chest punch phenomenon in the mid-bass range of roughly 50-100Hz. That will obviously vary among individuals, and not all individuals will feel chest punch to the same extent, at any
frequency. Human variability exists with this, as it does with everything else.
One blind study that has had a lot of influence, found that the majority of participants experienced the chest punch sensation most strongly at an average frequency of 63Hz. Several subwoofer makers, including SVS, provide a PEQ boost at that specific frequency. You can add a +3dB boost at 63Hz, simply by using the Music mode rather than the Movie mode in your PB3000. That PEQ boost of +3dB, centered on 63Hz, is the only difference between the two modes.
If I were you, I would play some test tones through your AVR to determine whether some frequencies are louder than others. That will be dependent on your subwoofer placement, and how your sub is interacting with room modes. You can download a test tone track from Spotify, or from YouTube, to test the volume levels of various frequencies.
If you hear (or measure with an SPL meter) a drop-off in volume somewhere in the 50-100Hz range, that might be a red flag that your subwoofer is not located in a good spot. In that case, doing a sub crawl will help you to find a better location for your sub. Be creative! Sometimes, just moving your sub by a few feet can be helpful.
As noted earlier, it is possible that you simply are not very susceptible to chest slam. But, if you have felt it at an outdoor rock concert, then you should be able to feel it in your room. It is definitely volume-related for most people, but our susceptibility to that sensation varies, and so do the volumes necessary to create the chest slam sensation.
As you are experimenting with subwoofer placement, Music mode, and volume levels, try playing a gunfight scene from one of the John Wick
movies, and see whether you can feel anything. Good luck with this!
PS: The PB3000 is actually quite strong in the mid-bass frequencies, so if the sub is well-positioned, you should be fine for mid-bass SPL.
SVS 3000 Series Subwoofer Measurements and Conclusion | Audioholics