Yeah, I think the 1+1 does need lots of power and you should leave them plugged in all the time. If that bothers you, you might want to look for other speakers.
The Acoustat TNT200 should be more capable than your HK amp. I used a Hafler DH500 on mine back in the day and they were the only speakers that made the Hafler's fan kick up into the high speed. With the Acoustats, the larger models with more ESL panels per side were more efficient than the ones with only one or two panels each... so they played louder with less power.
You can run the Acoustats full range and dial in an active subwoofer using the sub's crossover and volume controls to match it to the Acoustats. If you want to roll the Acoustats off and cross the sub in higher, you will need an electronic crossover or a different set of Acoustat interfaces to accomplish that. But something like an inexpensive (used) Paradigm X-30 active crossover would do the trick.
On the other hand, buying a set of Tekton Lore-series speakers and powering them with a modest tube amp might give better results and they would not have to be powered up all the time...
The Acoustat TNT200 should be more capable than your HK amp. I used a Hafler DH500 on mine back in the day and they were the only speakers that made the Hafler's fan kick up into the high speed. With the Acoustats, the larger models with more ESL panels per side were more efficient than the ones with only one or two panels each... so they played louder with less power.
You can run the Acoustats full range and dial in an active subwoofer using the sub's crossover and volume controls to match it to the Acoustats. If you want to roll the Acoustats off and cross the sub in higher, you will need an electronic crossover or a different set of Acoustat interfaces to accomplish that. But something like an inexpensive (used) Paradigm X-30 active crossover would do the trick.
On the other hand, buying a set of Tekton Lore-series speakers and powering them with a modest tube amp might give better results and they would not have to be powered up all the time...