I'm running the VTF-2 with stereo integrated amp and speakers with 91 db sensitivity, and no extra "high pass filter" box.
If it is the right size for your room, suggest you go with the STF-1. Check out the owner's guide on hsuresearch.com
and use Method B or C for a connection, typically used with stereo integrated amps.
Something doesn't add up here about the high pass filter suggestion. Check the discussion on the HSU web page for their HPF's. It seems to be designed for special-case systems where base curtailment from main speakers is required. If your bookshelf speakers aren't overstressed now with your current system, why would you need the HPF box? It's likely that you don't.
The STF-1 has its own amplifier, and you'll be setting its (very good) filter to handle everything up to the low frequency dropoff of your bookshelf speakers. Take the time to get placement, crossover freq., phase, etc., correct, and prepare to be amazed at how it enhances your bookshelves.
If it is the right size for your room, suggest you go with the STF-1. Check out the owner's guide on hsuresearch.com
and use Method B or C for a connection, typically used with stereo integrated amps.
Something doesn't add up here about the high pass filter suggestion. Check the discussion on the HSU web page for their HPF's. It seems to be designed for special-case systems where base curtailment from main speakers is required. If your bookshelf speakers aren't overstressed now with your current system, why would you need the HPF box? It's likely that you don't.
The STF-1 has its own amplifier, and you'll be setting its (very good) filter to handle everything up to the low frequency dropoff of your bookshelf speakers. Take the time to get placement, crossover freq., phase, etc., correct, and prepare to be amazed at how it enhances your bookshelves.