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1.2 Brass Feet, Discs, and Rubber Feet 

 

Spike Feet 

 

Included with your Rocket UFW-12 subwoofer 

are the same high quality 
threaded spike feet used on all 

Rocket Loudspeakers.  For car-
peted floors, simply screw the 

spikes into the threaded in-
serts located on the bottom of 
your UFW-12 Subwoofer.  On 

uneven surfaces, use these 
feet to help compensate.  

 

Brass Discs 

 
To protect your hard flooring surface, we have 

also included metal discs to provide a contact 
point between your speaker spikes and the 

floor.  To use, simply place the disc under the 
spike such that the small indentation is aligned 

with the point of each 
foot. 

 

Rubber Feet 

 

As an alternative to 
both methods above 

we’ve also included 

Figure 1.1 

E F 

I J 

Summary of Contents for UFW-12

Page 1: ...Rocket UFW 12 Subwoofer Enjoyment Guide Yours exclusively through 2150 W 6th Ave Suite L Broomfield CO 80020 Toll Free 1 877 543 7500 e mail info av123 com ...

Page 2: ...know that the real test is how you feel about your subwoofer several months from now That s why AV123 will continue to work hard to earn your respect with technical advice and customer service that is second to none in our in dustry You can visit the AV123 website www av123 com at any time for up to date product information answers to FAQ s or to seek advice from the AV123 community at our online ...

Page 3: ... Section 3 Connecting Your UFW 12 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 UFW 12 Phase Adjustment Section 5 Advanced Calibration and Correction 5 1 Performing a Room Frequency Sweep 5 2 Interpreting the Results 5 3 Advanced Parametric EQ Adjustments Section 6 Proper Care and Feeding 6 1 Warranty Policy ...

Page 4: ...her manufacturers Section 1 Product Overview 1 1 Control Panel Features see figure 1 1 A Power switch B Power On Indicator Glows brightly when the unit is on Glows dimly when unit is in standby The unit will automatically turn on in the presence of an audio signal Approximately 15 minutes of signal ab sence will cause the subwoofer to go into standby mode To fully turn off the unit please unplug i...

Page 5: ... bottom of your UFW 12 Subwoofer On uneven surfaces use these feet to help compensate Brass Discs To protect your hard flooring surface we have also included metal discs to provide a contact point between your speaker spikes and the floor To use simply place the disc under the spike such that the small indentation is aligned with the point of each foot Rubber Feet As an alternative to both methods...

Page 6: ...at you will find this fea ture an indispensable tool for shaping your sub woofer into the way you d like to hear it Flat clean and powerful More on this in section 5 2 2 Subwoofer Location The low frequencies played by your UFW 12 sub woofer tend to be non directional due the ex traordinarily long wavelengths involved As a result regardless of where your subwoofer is placed it should not be easily...

Page 7: ... since much of the stress of producing deep bass will be eliminated Consequentially your loudspeakers should sound cleaner and more controlled An easy and user friendly way to test different methods and frequencies for crossing over your subwoofer is to use low frequency sweeps re corded on special program material One of our favorite is the AVIA Guide To Home Theater DVD Specifically the tones th...

Page 8: ...or sound engineer of the film intended 4 3 Crossover Settings Your UFW 12 Subwoofer features a continuously variable crossover that allows you to set a low pass filter at any point between 30Hz and 200Hz In addition many popular receivers and surround processors also feature built in electronic cross overs please consult your receiver s instruction manual If present we recommend raising the UFW s ...

Page 9: ...to 120Hz and record the SPL for each frequency played f Important Note The Radio Shack sound meter uses C weighting for its readout This compen sates for the inaccuracies of the human ear at low frequencies We want to measure the actual response As a result a correction key is needed to ensure proper response before your final measurements are plotted We suggest gather ing the data using the readi...

Page 10: ... 0 the width of the area you ll be cutting or boosting will be a full Frequency Hz 30 50 80 73 67 79 one octave corresponding to an overall width start to finish of double the frequency half above AND below your center point In this ex ample we estimate the beginning of the peak in figure 5 3 to be at about 25Hz and the end of the peak at about 80Hz a range of around 55Hz However the 45Hz point is...

Page 11: ...el Now that we ve defined our peak s width we move on to the goal of this exer cise to flatten it out For this we need to de cide how much boost or cut will be necessary In our sample data our center frequency 55Hz corresponds to a gain of right about 74 dB However as you can see in the above figure the rest of our curve is flat at about the 69 dB level Thus in this example a 5dB cut applied to ou...

Page 12: ...e for up to 60 days after the date of purchase After 60 days the product must be returned to AV123 for repair only and return shipping costs are the responsibility of the customer All ques tions should be directed to customer service 6 2 Stay in Touch Remember that personalized tech support is only a phone call away Call USA toll free 877 543 7500 or worldwide at 303 543 7500 Whether you need tech...

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