Kind of late to the party but thought I'd add my two cents.
I have the first generation VR4JRS. I've employed several tweaks that seem to make significant sound improvements that I thought I'd pass along.
First, get rid of the spikes for the upper module and replace them with Herbies Big Fat Black Dots - Herbies even make a Black Dot kit for the VR4JRs, The VonSchweikrt Special: http://herbiesaudiolab.home.att.net/spkrfeet.htm
Second, as per the the Virtual Dynamics website DIY videos, replace the speaker driver steel screws with brass screws and tighten them with a torque screwdriver to 10-12 inch lbs tightness.
Third, replace the OEM Steel spikes with brass spikes from Parts Express @ 4/$20 although you'll need to get an adaptor from a good hardware store to fit the brass spikes to the VRs spike threads.
These simple and inexpensive tweaks that bring an improved clarity and openness to an already great speaker.
I have the first generation VR4JRS. I've employed several tweaks that seem to make significant sound improvements that I thought I'd pass along.
First, get rid of the spikes for the upper module and replace them with Herbies Big Fat Black Dots - Herbies even make a Black Dot kit for the VR4JRs, The VonSchweikrt Special: http://herbiesaudiolab.home.att.net/spkrfeet.htm
Second, as per the the Virtual Dynamics website DIY videos, replace the speaker driver steel screws with brass screws and tighten them with a torque screwdriver to 10-12 inch lbs tightness.
Third, replace the OEM Steel spikes with brass spikes from Parts Express @ 4/$20 although you'll need to get an adaptor from a good hardware store to fit the brass spikes to the VRs spike threads.
These simple and inexpensive tweaks that bring an improved clarity and openness to an already great speaker.