I bought a Trace Elliot BLX 150 (150w 1x10 combo with the gp7 SMC preamp and the "band pass" enclosure aka the bicycle rack) a couple months ago and it has been a great so far. I have seen some posts on here where people have added extension cabs to them (it has two speaker out ports on the back), but I was wondering how people set theirs up. Both outputs are 4 ohms, but if using an extension cab what ohm should the cab be? My understanding was that it was best not to mix different ohm cabinets, but if you add a 4 ohm cab that would make a 1 ohm load on the amp right? And an 8 ohm cab would be 2 ohms, which is still low, so I am wondering if anyone can give any advice (especially anyone familiar with this specific amp and using an extension cab with it). Thanks!