But how much Db it would be? Can you post a graph or at least some numbers like:
HSU VTF-2: Max SPL = 107.1 dB; 25 Hz SPL = 99.0 dB; 20 Hz SPL = 93.0 dB;
SVS 20-39cs: Max SPL = 109.5 dB; 25 Hz SPL = 105.8 dB; 20 Hz SPL = 91.0 dB