background image

The lightning flash with arrowhead symbol within an equilateral triangle is intend-

ed to alert the user to the presence of uninsulated “dangerous voltage” within the

product’s enclosure that may be of sufficient magnitude to constitute a risk of

electric shock to persons.

Le symbole éclair avec point de flèche à l’intérieur d’un triangle équilatéral 

est utilisé pour alerter l’utilisateur de la presence à l’intérieur du coffret de “volt-

age dangereux” non isolé d’ampleur suffisante pour constituer un risque d’éléc-

trocution.

The exclamation point within an equilateral triangle is intended to alert the

user to the presence of important operating and maintenance (servicing) instruc-

tions in the literature accompanying the product.

Le point d’exclamation à l’intérieur d’un triangle équilatéral est employé pour 

alerter les utilisateurs de la présence d’instructions importantes pour le 

fonctionnement et l’entretien (service) dans le livret d’instruction 

accompagnant l’appareil.

Important Safety Instructions

2

NO USER SERVICEABLE

PARTS ARE INSIDE.

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus 
near water.

6. Clean only with dry cloth.

7. Do not block any ventilation 
openings. Install in accordance with
the manufacturer's instructions.

10. Protect the power cord from being
walked on or pinched 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 into the apparatus, the
apparatus has been exposed to rain or
moisture, does not operate normally, or
has been dropped. 

13. WARNING: To reduce the risk of fire
or electric shock, this apparatus should
not be exposed to rain or moisture and
objects filled with liquids, such as vases,
should not be placed on this apparatus. 

14. To completely disconnect this 
equipment from the mains, disconnect
the power supply cord plug from the
receptacle. 

15. The mains plug of the power supply
cord shall remain readily operable. 

8. Do not install near any heat sources
such as radiators, heat registers, stoves,
or other apparatus (including amplifiers)
that produce heat. 

9. Do not defeat the safety purpose of 
the polarized or grounding-type plug.
A polarized plug has two blades with
one wider than the other. A grounding
type plug has two blades and a third
grounding prong. The wide blade or
the third prong are provided for your
safety. If the provided plug does not fit
into your outlet, consult an electrician
for replacement of the obsolete outlet. 

TABLE OF

CONTENTS

UNPACKING  . . . . . . . . . . . . . 3
PLACEMENT . . . . . . . . . . . . . 3
HOOKUP  . . . . . . . . . . . . . . . . 4
VOLUME LEVEL  . . . . . . . . . .5
CROSSOVER  . . . . . . . . . . . . 5
FINE TUNING  . . . . . . . . . . . . 5
TROUBLESHOOTING . . . . . . 7
REPAIR . . . . . . . . . . . . . . . . . .8
SPECIFICATIONS  . . . . . . . . . 9
WARRANTY  . . . . . . . . . . . . . .9

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 ...

Page 11: ...11 Notes ...

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

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