Subwoofer Reviews

Hsu Research VTF-15H Mk2 Subwoofer

This graph shows the quasi-anechoic (employing close-miking of all woofers) frequency response of the VTF-15H Mk2 subwoofer (blue trace).

The VTF-15H Mk2’s close-miked response, normalized to the level at 80 Hz, indicates that the lower –3dB point is at 16 Hz and the –6dB point is at 14 Hz. The upper –3dB point is at 148 Hz with the one port open, one port blocked, EQ = 1, Q = 0.7, and the Crossover switch set to Out.—MJP

Hsu Research VTF-3 Mk5 HP Subwoofer

This graph shows the quasi-anechoic (employing close-miking of all woofers) frequency response of the VTF-3 Mk5 HP subwoofer (blue trace).

The VTF-3 Mk5 HP’s close-miked response, normalized to the level at 80 Hz, indicates that the lower –3dB point is at 17 Hz and the –6dB point is at 15 Hz. The upper –3dB point is at 144 Hz with the 4” port open, 3” port blocked, EQ = 1, Q = 0.7, and the Crossover switch set to Out.—MJP