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ULS-15 MK2

Subwoofer Manual

Features

Custom built woofers.

“The end of featureless boom.”

We design our woofers from the ground up to have exceptionally flat response

and low distortion, so you will hear clean and detailed bass not found in lesser subwoofers.

Powerful BASH amplifiers.

Our custom built amplifiers have ultra-high headroom, soft clipping, subsonic filtering, adjustable Q, and
class A/B output stage to provide extremely high fidelity, low distortion, and high output.

Flexible room placement.

The luxurious and smooth non-vinyl finishes, rounded corners and edges, and front-firing woofer allow for 
close placement next to listeners, in corners, and even inside built-in entertainment centers.

Connects to almost any system.

“Integration is easier than ever.”

Thanks to modern receivers that use Dolby Digital, DTS, THX, or Bass 

Management, you can connect the subwoofer to your system with one cable. If you have invested in a stereo-
only system, integration is also simple thanks to true 24 dB/Oct. low pass filters. We provide XLR balanced
inputs, RCA unbalanced inputs and high level inputs.

 

Summary of Contents for Research ULS-15 MK2

Page 1: ...y low distortion and high output Flexible room placement The luxurious and smooth non vinyl finishes rounded corners and edges and front firing woofer allow for close placement next to listeners in corners and even inside built in entertainment centers Connects to almost any system Integration is easier than ever Thanks to modern receivers that use Dolby Digital DTS THX or Bass Management you can ...

Page 2: ...d particularly at plugs convenience receptacles and the point where they exit from the apparatus 11 Unplug this apparatus during lightning storms or when unused for long periods of time 12 Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as power supply cord or plug is damaged liquid has been spilled or objects have fallen...

Page 3: ...evel will be lower so neighbors are less disturbed We strongly recommend this method if your couch is up against the back wall and your room is over 18 feet deep Use subwoofer crawling This excellent technique is not as hard as it sounds The room s acoustical reflections are used to your advantage Place the subwoofer in the listening position in a seat towards ear level Connect the subwoofer to th...

Page 4: ...fer but can be purchased at electronic or home improvement stores Strip 1 2 of insulation from each end of the wire to expose the bare metal If your speaker wire is fraying tightly twist the metal Unscrew the plastic hex nut on the binding post to insert the exposed wire into the hole Tighten the binding posts by hand Run the wires from your system s amplifier to the subwoofer s HIGH LEVEL INPUTS ...

Page 5: ...ll integrated When using small satellites that don t have much bass the 90 Hz set ting on the control will probably yield the best results Your subwoofer has a sharp 24 dB octave low pass filter to remove upper bass and midrange from the subwoofer when CROSSOVER is switched IN This makes your subwoofer non directional Unlike many other subwoofers on the market the 24 dB octave slope stays steep at...

Page 6: ...d octave increments Measure from the listening position and set the subwoofer volume level to match the other speakers Setting the Q Control We have added an adjustable Q control on the subwoofer amplifier in order to give the user higher headroom flatter in room response and better ability to take advantage of room gain Set Q 0 3 for the highest mid bass headroom in all room sizes and for the fla...

Page 7: ...ables power transformers or other EMI sources Use an AC line filter or plug the unit into a different circuit If hum goes away when interconnects are disconnected the hum is coming from the rest of your equipment Add them back one piece at a time The one that causes the system to hum is the source of the hum The unit is going into STANDBY mode during the quiet passages Try turning the source signa...

Page 8: ...ofer s speaker level input Connect only to the channel that has a true ground If neither channel has a true ground e mail call technical support Increase the volume of the subwoofer and the subwoofer level or LFE level on the receiver or other source It is best to set the level of the subwoofer relative to the other speakers using a test disk and a Radio Shack SPL meter or built in tones on your p...

Page 9: ...efects Some states do not allow limitations on how long an implied warranty lasts and or do not allow the exclusion or limitation of incidental or consequential damages so the above limi tations and exclusions may not apply This Warranty Does Not Cover Damage caused by abuse accident mis use negligence or improper operation Products that have been altered or modified Any product whose serial numbe...

Page 10: ...10 Notes ...

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Page 12: ...12 HSU Research 985 N Shepard St Anaheim CA 92806 1 800 554 0150 HSURESEARCH COM ...

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