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While the Subwoofer Optimization System calibration process is automatic, following these suggestions 
will help insure the maximum benefit from the unit for your system's performance.

Configure the listening environment as closely as possible to how it is arranged during normal opera-
tion.  Furniture should be located where itis normally positioned during system use and heating and 
cooling systems should be operating. This includes anything that is normally in operation during the 
use of the system, such as projectors, lowered screens, draperies, and doors.

Calibration Procedure

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Suggestions

Check that your receiver/processor and all amplifiers, except the subwoofer amplifier, are powered off. 
Also check that all sound source components (e.g., CD, DVD, TV, Tuners, VCR, etc.) are off.

Unwrap the microphone and cable that came with the unit. The system provides a twenty-foot cable, 
which should be sufficient to reach from the Subwoofer Optimizer System unit to the primary listening 
position. In situations where the cable will not reach, do not attempt to add an extension to the cable. 
Either select a listening position as close to the primary position as is possible. The object is for the 
microphone to be in a position as close to where you would normally be located within the listening 
environment as possible. The microphone should be oriented such that it is at your seated ear level 
with the large, cartridge end pointing toward the ceiling. The microphone can be held (good), attached 
to a support (better), or fixed to a stand (best). Be sure to not cover the cartridge end of the microphone 
and that the unit is several inches away from 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 on the ULW-10 to OPERATE – FILTER – NORMAL.

The green indicator light (labeled CAL’D) on the ULW-10 (the same end as the function switches) should 
not be lit [first time use only].

Set the switches on the ULW-10 to CAL – FILTER – NORMAL. After approximately 5 seconds a series of 
low frequency tones should be audible from the subwoofer. These tones will repeat with increasing 
volume.
     a. If the tones stop after 1 cycle and the green CAL’D light flashes slowly (approximately once per 
second), this indicates that either the microphone or subwoofer is not properly connected, or that the 
subwoofer amplifier level control is set too low. If this is the case, set the unit switches to OPERATE – 
FILTER – NORMAL, check all connections, and increase the subwoofer amplifier level slightly. Set the 
unit’s switches to CAL – FILTER – NORMAL. The repeating series of tones should again start.
b. If the tones stop after 1 cycle and the green CAL’D light flashes quickly (approximately three times 
per second), this indicates that the subwoofer amplifier level control is set too high. If this is the case, 
set the unit switches to OPERATE – FILTER – NORMAL and decrease the subwoofer amplifier level 
slightly. Set the unit’s switches to CAL – FILTER – NORMAL. The repeating series of tones should again 
start.
     c. This procedure may need to be repeated by the user until the subwoofers output level is optimized 
to support filter calibration. 

Once levels are properly set, the calibration tones will repeat, the response measurement procedure 
and filter settings will be made, and the green CAL’D light will light continuously. This indicates a 
successful calibration.

Set-up

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Summary of Contents for Onix Rocket ULW-10

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

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

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