HSU Research ULS-15 MKII Subwoofer
The HSU Research ULS-15 MK2 represents our most remarkable performance per dollar improvement to date. We have increased the output capability of it‚¬„s predecessor, the ULS-15, by up to 5 dB, added more flexibility (Q control, operating modes), and lowered the price considerably while retaining the same compact size.
We achieved this remarkable feat by platform sharing ‚our three new models (the VTF-3 MK5 HP, VTF-15H MK2 and the ULS-15 MK2) use as much similar components as possible. The economies of scale of using similar components help cut costs. It shares the same motor structure with multiple shorting rings to virtually eliminate flux modulation distortion. Harmonic distortion is also extremely low thanks to a very symmetric magnetic field.
The ULS-15 MK2 now has two operating modes. In the regular operating mode, the HSU Research ULS-15 MK2 has flat response down to 20 Hz in free field. The second operating mode allows the HSU Research ULS-15 MK2 to be used as a mid-bass module (MBM), with even higher headroom than our MBM-12 MK2. Unlike the MBM-12 MK2, the ULS-15 MK2 even in MBM mode has strong output capability down to well below 20 Hz.
Amplifier Power (RMS) 2000 W Short Term, 600 W Continuous Frequency Response 20 - 200 Hz, +/-1 dB Woofer 15 Inch Q Control Range 0.3 - 0.7 Crossover Slope 24 dB/Oct Phase 0°/180° Inputs Balanced XLR (2), Line Level (2), Speaker Level (2) Power Outlet Requirement 720 W, 120/240V Enclosure Dimensions 18" H x 18" W x 18" D Dimensions with Grill, Feet & Amp 19" H x 18" W x 191?2"D Weight 65 lbs
"It brought weight and power to the double bass without any sense of exaggeration. The ULS-15 mk2 effortlessly nailed the transient nature of the performance; the sharp pluck attacks of the double bass and the acute starts and stops from the slaps."
"The ULS-15 mk2 convincingly relayed the sharp thuds of bullet strikes, the rumble of distant explosions, and the subterranean pounding of outside bombardment within a cave network. Thunderous battle sequences were brought to life by the ULS-15 mk2, and I didn’t get the sense at all that these scenes were being hindered by the dynamic range of the subwoofer."
"Overall, the ULS-15 mk2 is a major improvement over the mk1, despite costing much less. It has muchmore composure at very deep frequencies and far more headroom at higher frequencies.[…] The mk2 slightly improved on all of its strengths and massively improved on its weaknesses."
— James Larson, Audioholics,
All eligible company warranty and service support is being provided on HSU Research ULS-15 MKII Subwoofer