Originally Posted by pfar54
When I play the bass testing songs that have been posted on this thread, the bass shakes the walls at some points. I'm not meaning that the sub always sounds horrible. The only time it sounds decent is when I have the receiver turned way up (around -10 volume and -3 gain) and it is only for lower frequencies. The higher frequencies (45-70) the sub is really quiet.
I am in no way meaning that no sound comes out of the sub. I just have to turn everything to its highest level. During normal volume (-40 to -20) the sub is barely audible. Even when the volume is way up though it doesn't impress me. It in no way is better than my old sub, except lower volumes. To me, that is not worth $2,000 and all of this headache.
I ordered a longer sub rca cord so that I could position the sub in the corner - SVS's instructions. I will install later tonight and see if it helps.
I don't think that anyone wants you to keep the PB4000, if you think that it's too much of a headache for too little return. But what you seem to be saying now is significantly different from what I thought you were saying before. Apparently, you aren't lacking bass, you are just lacking mid-bass. That may very well be a placement issue. It is also entirely possible that your previous subwoofer, while not playing the very low-frequencies that I assume you bought the PB4000 for, had a peak that you liked in the mid-bass. Perhaps it was distorted sound, but that can be harder to identify with bass frequencies. Louder distorted bass, may just sound louder, until we get used to hearing undistorted sound.
I still think that having Dave there to measure your frequency response will help a lot. You may have some cancellation occurring in the mid-bass which is knocking down the volume. Until and unless he does that, though, there are some things you can try to enhance your mid-bass. One of them is to run your subwoofer in the all ports open 20Hz mode, if you are currently running it in the one port Extended mode. That will increase the mid-bass slightly relative to the low-bass. You should rerun Audyssey if you change the port tune, and don't forget to change to Standard mode in the sub's DSP.
Second, you can go into the subwoofer's digital menu and set some pre-programmed PEQ to add a 2+db boost centered on 63Hz. That frequency is sort of the sweet spot for mid-bass. Third, you can implement cascading crossovers, which are explained in detail in a section of the Guide that I am giving you a direct link to below. That will take you about 5 minutes to implement, and it will also concentrate more SPL in the mid-bass range. Doing all three of those things will give you relatively much more mid-bass. Perhaps too much, but you can be the judge of that. If you have down-loaded the Audyssey app, you may be able to add even more mid-bass if you want to.
One of the advantages of the subwoofer you have now is it's versatility. It is a low-frequency specialist. But, if you know what you are doing, you can also enhance it's mid-bass capabilities. If it turns out that you are experiencing some cancellation in the mid-bass range, which Dave's measurements can determine, there will be several things you can try, including moving the subwoofer slightly or adjusting it's distance or its phase setting. But, you won't know about that until you measure the sub's performance in the room.
If, after everything, it's really still not giving you as much mid-bass as you want relative to the low-bass, then I would buy a subwoofer which emphasizes the mid-bass more, relative to the low-bass. The PSA V3611 should be perfect for you, in that case, or perhaps the JTR Cap 118HT. Both subwoofers would give you relatively more mid-bass than the PB4000, and they would be much better subwoofers than the HSU you were considering. But, I would try the other suggestions first. You have already got the subwoofer in your room. You may as well find out what it can do, and learn a little bit more about what frequencies you really like the most, in the process.