Originally Posted by over50
The sub sounded muddy and not clear . I wasnt happy with the bass so i emailed HSU support and this is Dr Hsu responce. After i followed his instructions, i raised the volume alittle .The support web sight is quick,fast helpful Support after the sale is important to me. Hope this help.I was very suprised that Pete Hsu responed. I hope this helps.
Try to place the subwoofer in a well-enclosed corner that is furthest away
from the largest room openings. If you are using the subwoofer on hardwood
or tile flooring surface, use a mat or carpet throw rug underneath the
On the VTF amp, I suggest connecting to one rca input, set volume knob to
1/4 of the way up, set phase to '0', set bass extension switch to '1 port
open' (making sure to keep one port plugged on the back of the unit), set
crossover switch to 'Out' (which will bypass the internal crossover knob),
set power switch to 'Auto'.
Then run Audyssey. After running Audyssey, manually flip the bass
extension switch to '2 port open' to get the highest headroom and less deep
bass heavy sound (no need to re-run Audyssey either).
Go into the A/V receiver speaker settings menu, and check to make sure
that none of the speakers are set to "Full Band / Large". Check crossover,
distance, and channel level settings too on the A/V receiver to see if they