How are you enjoying the Genz Benz Focus my friend? I'm torn between getting another GK Neo of some sort or trying out the Genz Focus series. Plus that Hartke 210 intrigues me but doesn't seem to get a lot of love here on TB. Have you used the two together in a "mini stack" format?
Thanks,
Brent
I haven't really had a chance to try all the possible head/cab/bass combinations that are possible with my gear yet. Also I'm just getting back into playing at haven't really played any gigs with my own amps recently. Just been practicing with full band in basements and messing around in my small practice room. Here's what I have:
Heads:
Hartke 3500 head (old MOSFET "Transient Attack" one, removed from 1155 combo amp).
GK MB200 head
SWR Workingman's 10 combo (80 watts + 1X10)
Cabs:
Hartke aluminum 1X15" + 5" cone tweet/mid driver (cab from 1155 combo)
Genz Benz Focus-LT FCS-115T
Hartke 210XL
Basses:
1993 Carvin BB-75 active 5-string with rounds
2011 Squier CV 50's P with flats
2012 Squier VM 70's Jazz with half-rounds
I initially bought the 210XL to use as an extension cab for the SWR Workingman's 10 as a vertical stack, but due to the mismatch of speakers the 10 in the SWR farted out way before the 210XL did. I then bought the GK MB200 head and used that with the 210XL on a speaker stand. I wasn't really happy with the low end of the the 210XL, which led me to buy the GB Focus 115. Since then, I have tried the 210XL placed vertically on the ground and the low end was much better (nothing like the Genz though of course). The MB200 + GB Focus 115 sounds good, although the cab is a little "boomy" compared to the 15+5 in the Hartke 1155 combo cab. Hartke 3500 head + GB Focus 115 also sounds good. I haven't tried the 210XL stacked on top of the GB Focus 115 yet. Not sure I would gig with it like that due to all the talk about the evils of mis-matched cabs, but I'll at least try it to see. I actually need to get some more speaker cables to check it out.
I did stack the 210XL on top of the Hartke 1155 combo once, just in the house briefly. Sounds OK as far as I could tell, stupid loud. I just don't get the guys who say you need at least 600 watts

I do want to try the Hartke 115+5 cab stacked on the GB Focus 115 powered by the 3500 head sometime though.
I think if I like the GB Focus 115 in the long run I may get another to stack it with.
Once I plays some gigs with some of these setups I'll report back.
I gotta say - the GK MB200 has been really impressive. I actually used it to power an Ampeg SVT 8X10 cab that was in place at a rehearsal space for a blues band I'm playing with. Sounded great! The other guys couldn't believe the volume that little thing was putting out. Guitarist had a Fender Super Reverb 4X10 and the drummer was pretty loud too.