 |
 | |||||
 |  |  |  | ||
 |  |  |  | ||
 |  |  |  | ||
| ||||||||||||||||||||||
|  |  | |||||||
| Subwoofer Tests - Archived HSU VTF-3 MK2 (maximum extension)Discuss HSU VTF-3 MK2 (maximum extension) in the Manufactured Speakers and Subwoofers forum; HSU VTF-3 MK2 (maximum extension) Manufacturer: HSU Research
Model: VTF-3 MK2
Provided by: Takku
Manufacturer link: HSU Research : VTF-3 MK 2
Price: $699
Manufacturer ...  |
| Alphabetical Search | |||||||||||||||||||||||||||
| All | # | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
  |
|
Views: 9175 - Replies: 4
| Thread Tools |
 07-16-06, 03:45 PM
| #1 | ||||
| HSU VTF-3 MK2 (maximum extension) Manufacturer: HSU Research Model: VTF-3 MK2 Provided by: Takku Manufacturer link: HSU Research : VTF-3 MK 2 Price: $699 Manufacturer specs: • Frequency response (Maximum extension mode) ± 2 dB 18 Hz • Frequency response (Maximum output mode) ± 2 dB 22 Hz • Frequency response (Maximum extension mode) ± 1 dB 20 Hz • Frequency response (Maximum output mode) ± 1 dB 25 Hz • Woofer size 12 inches • Amplifier power rating 350 Watts • Crossover frequency range 30-90 Hz, bypassable • Crossover slope 24 dB per octave • Crossover type low pass only • Phase 0/180° • Dimensions 22"(h)/15"(w)/23"(d) • Shipping weight 80 lbs. • Finish Black, Maple, Rosewood • Power Requirements 435 Watts • Warranty 7 Years on the woofer, 2 years on Electronics Configuration as tested: Phase: 0 degrees Tuning frequency: 20 Hz (one port plug) Subsonic filter: 20 Hz (maximum extension mode) Orientation: Sideways  | ||||
 |
 Advertisement | |
| |   |
| 07-17-06, 03:23 PM
| #4 | ||||
| Hsu vtf3 mk2 20 Hz By plugging one of the ports one achieves around 4 Hz more extension. The shape of the frequency response is still quite good, although the same upper end roll off can be seen. Therefore I wouldn't use it with much higher crossover than 80 Hz. The built in crossover doesn't go higher than ~70 Hz. The lowest setting results in very low ~25 Hz crossover. The maximum mid bass output is lowered by at least 2-3 dB compared to maximum output mode. The deep bass compression goes even worse because now there is only a single 3” port left. THD profile is similar to the 25 Hz tune with high deep bass distortion at high output levels, and upper bass distortion anomalies/resonances. Group delay stay low down to 28 Hz, but grows rapidly below. Spectral decay shows a lot of ringing near the tuning frequency. Spectral contamination is similar to the 25 Hz tune, though with slightly higher overall distortion. The overall build quality is average. + Really good extension and relatively flat frequency response + High mid/upper bass output capability + Overall price/performance ratio - Somewhat high deep bass distortion at high output levels - Distortion anomalies/resonances in upper bass range - Ringing around the tuning frequency | ||||
| |
