Can I still use the 6000 for all 4 or is this impossible?
Yes but personally I wouldn't use it over the option of 2x DSP 1000 or 2x DSP 3000 models.
My reasons for stating this are, what if you eventually get a BK Advance or BK LFE then see what your missing on your 4x Mini Lfe via CM? Would you perhaps one day then seek to have what several on these forums have with 4x BK Advance as the main front and rear stereo pairs?
The DSP models will work with every single tactile unit on the market.
2ohm BK models like the BK Concert or BK Gamer and then the more common 4 ohm models. It even enables usage of a 2ohm and 4ohm to be used on its independent channels.
I cant believe some people buy amps that are about $60 less but nowhere to the specs or features of these iNuke DSP. Like for example the "Dayton" amps offered by P Express as recently discussed in another thread.
Few amps do what eh iNuke DSP offer and even though these amps were released in 2011/2012 you still can't get a better performing or affordable options with the level of features and specification they offer.
So these amps bring not just great features and more potential control but they are capable to run the most demanding tactile. I've ran 2 of the biggest LFE on a DSP 1000 with no issues and thats remarkable with an amp priced at $200.
Although quite a few guys prefer to spend just a tad more on the DSP 3000 if powering the BK LFE or indeed the 2 ohm BK Concert. This keeps the amp less to running at its highest potential but not that much more expensive.
Ive had ownership and experience with every BK model over the years, so please see my advice as a gentle hand to help bring you an awesome tactile configuration and immersion. Of course though its your decision.
My advice to anyone considering wanting high end tactile cockpit.
Especially those lucky enough to be in USA with companies offering 30day or more returns is to.....
Buy and compare 1x Mini Lfe to a BK Advance or to a full-size BK LFE.
In discovering with good testing what each does is a great way to then consider how to go about working towards the users ideal configuration. Even if it means over time and building towards this.
For example:
Is a rig with 4x Mini LFE better than a rig with 2x BK Advance, mmmmmmmmmm?