Aside from adjusting the innards for more bass (Albert can offer excellent advice there, instead of guessing), what I found is that just by moving my speakers a little closer to the back wall/corners, I picked up all the bass I need or could ever want. I found that as my VR-7's have continued to break in, the bass has also improved.
Add a subwoofer to Von Schweikert 4Srs?
I'm currently using VS 4Srs after upgrading from 4 Jrs late last year. They are (finally) getting broken in and really singing. No complaints except I'm longing for a little more low end. I'll admit it...I'm a bassaholic but I don't like that home-theatre-low-rumble without a cause sound. Never owned a sub. Any recommendations (besides seeing a therapist)? The best woofer I have heard to date and would proud to have in my system was a Talon I herad at last October's RMAF. My appreciation in advance.