As some of you know, I have been running experiments with my nv610 to get a brighter tone. I always loved the tight punch and growl of the stock cab but, could never quite get the top end I wanted without getting too clacky. I experimented with -jensen mod10-50 drivers (one or two) full range, crossed over, in the same cab compartment or in a seperate foam baffle mid chamber. I loved all versions of that experiment but felt that I was talking away some of the cabs low end. The best version was to have one 10" crossed at 800hz in it's own chamber in the upper right hand side of the cab, controlled by an attenuator. The sound was almost perfect with just alittle clack. The left side vertical columb was low passed at 800hz, the remaining two 10"'s were full range. This profided the best dispersion of any of my exeriments. -Jensen mod8-20. This is where Im at and will probably stay. What I have now is 5 stock berg 10" woofers run full range and the 8" in it's own chambere, crossed at 800hz and controlled with an attenuator. What I have found is that if I turn the 8" off and then turn up the highs on the amp, I can turn the top end up until the woofers start to get that growl. Then I just add in alittle 8" for the extra top end and Im done. If I turn the 8 all the way up I can leave the eq flat but, there is no growl, just very clean and perfect. Sometimes thats great but, I like uglier tones. I now have options. At last nights gig I ran this version and it's the most cutting tone I have ever had. The dispersion was about 80% of what the fully crossed over version was but, I think it's a fair trade because I probably wouldn't get enough growl the other way with 3 of the woofers low passed. If I think of it, I'll take a picture of the cab at tonights gig. The adaptor I made to mount the 8" in a 10" hole is made from a sheet of aluminum and was cut by hand so, it's not pretty but, it sure works.