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Subwoofer Manual

Features

Wireless Technology.

Contrary to popular belief, subwoofer placement is critical in order to achieve optimal sound quality. Incorporating

wireless technology in our subwoofer greatly enhances your ability to position the subwoofer for optimal performance

while still keeping the spouse happy. 

Ultra Linear Woofer.

This woofer uses a patented XBL2 ™ motor design that has an incredibly linear motor force. The motor force (BL)

stays within 2% over a wide +/- 20 mm excursion. Most woofers with Xmax of +/- 20 mm would be lucky to have

the BL within 2% over a +/- 5 mm range! 

Powerful BASH

®

Amplifier.

A very high headroom BASH

®

amplifier is used to fully utilize the ultra low distortion, ultra high output capability of 

the woofer. This amplifier is capable of delivering up to 1000 W rms short- term power.

Great Connectivity.

Now included are more connectivity options than any other subwoofer we know of, at any price!  Inputs include 

balanced XLR, unbalanced RCA, wireless, and speaker level. This flexibility allows you to use the subwoofer in

recording studios, high end two channel systems, and state-of-the-art home theater systems.

Compact Enclosure.

Traditionally it has been difficult to get loud, clean, ultra deep bass from a compact enclosure. The ULS-15 changes 

that. It gives you loud, clean, ultra deep bass from a compact, beautifully-finished enclosure.  

Accomodates All Room Sizes.

An Ultra Low Frequency (ULF™) trim control allows you to maintain accurate deep bass response in virtually any 

room, no matter what shape or size. 

Summary of Contents for ULS-15

Page 1: ...ze the ultra low distortion ultra high output capability of the woofer This amplifier is capable of delivering up to 1000 W rms short term power Great Connectivity Now included are more connectivity options than any other subwoofer we know of at any price Inputs include balanced XLR unbalanced RCA wireless and speaker level This flexibility allows you to use the subwoofer in recording studios high...

Page 2: ...ly 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 ap...

Page 3: ...bwoofer at least 2 ft away from computers in order to prevent the hard drive from being erased Rules of thumb for placement Avoid the center of the room In general avoid placing the subwoofer half way between the front and back walls You should avoid sitting in the middle as well Use near field placement You get the tightest upper bass and the most punch if you can place the subwoofer close to you...

Page 4: ... other choice Integrated amplifiers or stereo receivers with no pre outs fall in this category The subwoofer will operate in bass augmentation mode i e the main speakers will be running full range You dial in the subwoofer to come in just where the main speakers start to fade out Since the subwoofer uses its own amplifier and has a high input impedance it will not alter the loading on your main am...

Page 5: ... automatically go into STANDBY mode Crossover Defeat Switch If you are using a SUBWOOFER or LFE output you can disengage the crossover by switching it to OUT The crossover should be switched to IN when using high level inputs or two channel low level inputs Crossover Frequency Control This low pass crossover controls what frequencies are handled by the subwoofer ULF Trim This compensates for room ...

Page 6: ...r than for music 3 dB higher is a good choice if your receiver allows you to set levels for each source Step 5 Crossover If your controller has bass management and has a steep crossover slope set the crossover switch on the subwoofer to Out If your controller has a gentle crossover slope 12 dB Oct or less set the crossover switch on the subwoofer to In and set the crossover fre quency knob on the ...

Page 7: ...level down 5 dB 7 If your controller has a subwoofer out level use this to adjust the level If it does not play the 50 Hz tone and adjust the subwoofer volume control to get the desired change in level If you are using the Radio Shack SPL meter compensate for the meter s deep bass deficiency The older analog Radio Shack meters are down 12 dB at 16 Hz 7 dB at 20 Hz 4 dB at 25 Hz and about 2 dB down...

Page 8: ...pick up noise Try another interconnect or speaker wire Also move the signal cable away from AC cables 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 th...

Page 9: ...reless Make sure the channel selection are the same on the trans mitter and receiver Check and see if the led above the Wireless Wired switch is lit up solid green If not move the antenna transmitter and subwoofer to get better reception If you are using the wired con nection make sure the Wired Wireless switch is set to Wired With the volume on the subwoofer turned to a low setting try plugging t...

Page 10: ... 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 number has been ...

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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