ULS-15 Subwoofer

The ULS is our lowest distortion, most musical and spouse friendly subwoofer.
 

HSU Research is proud to introduce the ULS-15, an ultra low distortion subwoofer that extends down to 10 Hz in most rooms. Besides outstanding performance, it is the most spouse friendly sub we've ever offered, with wireless connection, beautiful finish, and compact size.

It is the first high end subwoofer with wireless connection. This makes it so much easier to optimally place the subwoofer without ugly wires or the high cost of running in-wall wires to the optimal location.

For the truly high end folks, you can also run balanced signal to the subwoofer. The ultra low distortion, super deep bass extension, and balanced inputs make it ideally suitable for recording studios.

The ULS-15 features a woofer with patented super linear motor. The motor force is linear within 2% over an ultra wide +/- 20 mm. In contrast, most woofers with Xmax of +/- 30 mm will have the motor force within 2% over 5 mm or less. It also has a butyl rubber foam surround. Butyl rubber foam has the longevity of solid butyl rubber without the weight penalty. Triple shorting rings mean virtually non-existent flux modulation distortion.

ULS-15 Frequency Response Curve

Freq Response Curve with 1 Port Open, EQ1

 

CEA 2010 Measurements (1 Meter, Peak)

ULS-15:

Tone Burst Center Frequency (Hz) Maximum SPL CEA 2010 Rating
20 106.7 112.2
25 113.2
31.5 116.7
40 120.9 121.8
50 122.9
63 121.6
80 120.3

 

Industry Reviews

"Bass was noticeably deeper, faster and with substantially more impact."

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Larry Cox, Positive-feedback.com, Issue 44, July/Aug 2009

 

"The ULS-15 is the latest in a long line of excellent subwoofers from Hsu Research. It produces low frequency output, with superb transient response. I’d particularly recommend it for anyone using a sub in a critical music listening environment, and would not hesitate to put one into my home recording rig."

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Secrets of Home Theater and High Fidelity, November 2008

 

"Simply amazing! The 15 inch subwoofer packs a huge punch. The sound is clear and undistorted."

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Ara Derderian, 2008 podcast #304 htguys.com, August2008

 

Customer Testimonials

"Just wanted to drop and and reiterate how awesome these subs truly are. These subs have so much detail in them it is astounding. Stewart, you truly knew what you were speaking about when you told me how good they sounded. I watched the Adele concert and when the bass guitar kicks in, OMG these subs really get all the detail in them. Also, I watched the thin red line yesterday and these subs wowed me again with their detail not just a one note boom. I definitely can't wait to upgrade to the quad."

Kimwyn

 

"My Quads (4 ULS-15s!) are in walnut - beautiful. Then I bought a satin black for use in another room and was completely floored at how good the "plain" finish looks.

Dr. Hsu - I don't know who makes your enclosures, but keep them happy!"

hjones

 


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Product At a Glance

Amplifier Power (RMS) 2000 W Short Term, 600 W Continuous
Frequency Response 15 - 200 Hz, 0/-1 dB
Woofer 15 Inch
ULF Trim 16 - 50 Hz
Crossover 30 - 90 Hz, Bypassable
Crossover Slope 24 dB/Oct
Phase 0°/180°
Inputs Balanced XLR (2), Line Level (2), Wireless (2), Speaker Level (2)
Power Outlet Requirement 600W
Enclosure Dimensions 18" H x 18" W x 18" D
Dimensions with Grill, Feet and Amp 1834" H x 18" W x 20316"D
Weight 84 lbs
Warranty 7-years on Woofer, 2-years on Electronics
Designed and Engineered in the U.S.A.


Brochure

Quick Set-Up
Owners Guide

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