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Section 2—Subwoofer Placement and Location

Unlike regular loudspeakers, subwoofers will often work best when placed in a corner, even 
if located a few feet to the side and/or behind the closest main speaker. Typically the front right 
and left corners sound the most natural, though rear corner placement is also an acceptable option.  
The driver can be facing you or be pointed along either wall. The low frequency sound waves emitted 
by the ULW-10 are quite long and will therefore interact greatly with the walls of your room. As a result, 
even small placement adjustments can have a significant impact on the sound you hear. A room corner 
will provide maximum output at a given power level, and the maximum number of room modes will be 
excited, translating to a flatter response in most rooms. Often, one rather large peak in the subwoofer’s 
operational frequency range will stand out with corner placement. For this, we've also provided the 
ULW-10 with the ability to alter its response for your new environment with an onboard one band 
parametric equalizer (SOS). As “boomy” bass is often the result of the largest untamed peak, we're 
confident that you will find this feature an indispensable tool for shaping your subwoofer into the way 
you'd like to hear it: flat, clean, and powerful. More on this in section 5...

2.1 Subwoofer Placement

The low frequencies played by your ULW-10 subwoofer tend to be non-directional due the extraordi-
narily long wavelengths involved. As a result, regardless of where your subwoofer is placed, it should 
not be easily localized, but should instead produce a balanced and enveloping response. Factors that 
can affect performance in this regard are rattles from shelves, walls, or other nearby objects, as well as 
distorted output. If you are having issues with subwoofer localization, try to isolate any rattling or 
buzzing objects, or place the sub in another corner of your room. If the sub's output is distorted, check 
to see that you are not at the maximum sub level setting on your receiver or pre/pro. An overdriven 
output can induce audible distortion. To resolve this problem, you may need to turn down the 
subwoofer level on your processor and turn the gain level up on the subwoofer itself to compensate.  

2.2 Subwoofer Location

Figure 2.1

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Содержание Onix Rocket ULW-10

Страница 1: ...Your Rocket ULW 10 Subwoofer Enjoyment Guide Yours Exclusively Through 2150 W 6th Ave Suite L Broomfield CO 80020 1 877 543 7500 email info av123 com U LW 1 0...

Страница 2: ...unique environment We hope you find it clear concise and useful Again thank you for your support U LW 1 0 A Suggestion Thank you and congratulations At AV123 our absolute highest priority begins and e...

Страница 3: ...cting Your ULW 10 Subwoofer Section 4 Setting Up Your Surround Processor or Receiver 4 1 Small or Large 4 2 Simple Calibration 4 3 Crossover Settings 4 4 ULW 10 Phase Adjustmen SOS Subwoofer Optimizer...

Страница 4: ...ulously Handcrafted with Pride in the PRC Distributed Worldwide Exclusively by AV123 com ATTENTION RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR CAUTION WARNING RISK OF HAZARDOUS ENERGY MAKE PROPER SPEAKER...

Страница 5: ...ot exceed 75 gain You will want to allow for adjustment Avoid setting gain levels near maximum either in your receiver s channel trim menus or on your subwoofer s amplifier Avoiding doing so will also...

Страница 6: ...rametric equalizer SOS As boomy bass is often the result of the largest untamed peak we re confident that you will find this feature an indispensable tool for shaping your subwoofer into the way you d...

Страница 7: ...t you will need to use a Y splitter to join the L and R low level output from your preamplifier or receiver Often Tape or Monitor outputs will provide an appropriate low level stereo signal if the ded...

Страница 8: ...ers in your system will play with greater ease and less distortion free from the demands of deep and complex sub 80Hz waveform reproduction Your speaker system amplifier will be less taxed as well sin...

Страница 9: ...d pressure level used for the other speakers An assistant is very helpful in this process Some like to run their sub a bit louder hot for movies by increasing the sub level in the receiver s control p...

Страница 10: ...d what AV123 recommends is using an 80Hz crossover 4 3 Crossover Settings ULW 10 The phase dial see I on figure 1 1 controls the relative phase of the subwoofer to best reinforce the other loudspeaker...

Страница 11: ...with Analog Signal Processing ASP technology The digital circuitry is used to set the calibration level generate test tones identify room resonances and set filter parameters The unit performs this p...

Страница 12: ...120Hz but this will be of no benefit to you Option one is easiest and will work for most rooms Following SOS calibration the control should be reset as part of the final system balance procedure If yo...

Страница 13: ...rom any other body or surface Refer to the Microphone Placement Section see below for additional information Insert the plug from the microphone into the MIC connector on the ULW 10 Set the switches o...

Страница 14: ...evel of the subwoofer amplifier Use your systems internal test tone generator external test tone signal sources or your ear to adjust the level to provide the best possible integration with the rest o...

Страница 15: ...ion set the switches on both ULW 10s to OPERATE FILTER NORMAL The room resonance filter settings will remain stored within the unit and you will not need to repeat the calibration procedure Calibratio...

Страница 16: ...erage free Remember that personalized tech support is only a phone call away in the USA call toll free 877 543 7500 or worldwide at 303 543 7500 Whether you need technical assistance have a sugges tio...

Страница 17: ...Thank you for supporting AV123 U LW 10 16...

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