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Onix Rocket UFW-10, Setup Manual

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Onix Rocket UFW-10 Setup Manual Download Page 4

 

 

4 of 19 

Subwoofer Setup Tips And Procedures 

 

Tools Required: 

 

1.

 

Radio Shack SPL Meter.  Can be obtained at Radioshack: 

a.

 

Analog version: 

http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&product%5Fid=3
3-4050

 

b.

 

Digital version: 

http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&product%5Fid=3

3-2055

 

 

2.

 

1/12 Octave Sine Wave Test Tone CD.  You can generate your own tones or download 
some tones that have already been generated for you: 

a.

 

http://www.nch.com.au/tonegen/

 

b.

 

http://www.snapbug.ws/sinewaves/

 

 

3.

 

Tape Measure. 

4.

 

Frequency Response Graphing Software (optional). 

5.

 

A Tripod For Mounting Your RS Meter. 

 

 

NOTE: 

All of the following information will assume the following: 

 

1.

 

A Pre/Pro or Receiver is being used to provide Bass Management. 

2.

 

All satellites set to 'Small' and subwoofer to 'Yes'. 

3.

 

A crossover point of 80 Hz is used. 

4.

 

Your subwoofer(s) is/are connected properly to your Pre/Pro or Receiver and your house 

electrical system in strict accordance with the Owner's Manual that came with your 

subwoofer.  

5.

 

All 5 satellite speakers are calibrated from the listening position to a reference level. 

 

Summary of Contents for UFW-10

Page 1: ...1 of 19 UFW 10 Subwoofer Setup Guide Written by Bossobass AKA Dave Edited by PhenomeNhan ...

Page 2: ...ELATIVE PHASE ADJUSTMENT 10 STEP 6 FINAL LEVEL ADJUSTMENT 11 ADVANCED SETUP SECTION 12 PARAMETRIC EQUALIZATION 12 DUAL SUBWOOFERS MONO CONFIGURATION 13 Asymmetric Placement Of Dual Subwoofers Asymmetric Not symmetric 13 DUAL SUBWOOFERS STEREO CONFIGURATION 14 PLACEMENT 15 DUAL SUBWOOFERS REBASE ROUTING CONFIGURATION 15 YOU MUST HAVE 15 CONNECTIONS 16 THIS IS WHAT HAPPENS 16 ADVANTAGES 17 FINAL THO...

Page 3: ... shoes we all have to walk a mile in when we re first introduced to this digital multi channel octopus will benefit in any small way by the information below I also would like to disclaim the facts that some of what I say is biased toward my own thoughts and some of what I say is downright controversial I would like for those who read this rudimentary guide to add input discoveries and tweaks as t...

Page 4: ... www nch com au tonegen b http www snapbug ws sinewaves 3 Tape Measure 4 Frequency Response Graphing Software optional 5 A Tripod For Mounting Your RS Meter NOTE All of the following information will assume the following 1 A Pre Pro or Receiver is being used to provide Bass Management 2 All satellites set to Small and subwoofer to Yes 3 A crossover point of 80 Hz is used 4 Your subwoofer s is are ...

Page 5: ...It s measured in degrees If you can visualize a sound wave that curves upward to it s peak and then downward to its bottom that is one cycle of the wave Since degrees of angle are not curved there are infinite degrees along this wave As the frequency is lowered the phase changes Some subwoofer designs change more drastically than others Distance disparity between speakers and subwoofer also change...

Page 6: ...5 Final Volume Level Adjustment After tweaking all of the above a final subwoofer volume level tweak will get you there NOTE I ve left out the step of tweaking the crossover slopes of the satellites and the subwoofer Although it s a very important tweak it s beyond the capability of the vast majority of multi channel systems and is a rather involved discussion for a more advanced setup guide than ...

Page 7: ...utput STEP 2 FIRST LEVEL ADJUSTMENT 1 Set the subwoofer level in your Pre Pro or Receiver s channel calibration menu to 5 from 0 reference 2 Set the subwoofer s amplifier gain control to approximately one o clock 3 Use the Pre Pro or Receiver calibration menu to calibrate the subwoofer level and use the subwoofer amplifier gain control add gain or reduce gain at the subwoofer amplifier to arrive a...

Page 8: ...r is to the distance of your mains from the listening position the more in phase it will be In other words the direct radiated sound from both will arrive at your ears closer to the same time which yields a less time smeared tighter sound This is the part of the setup of a subwoofer that requires the most time and effort You should use a source disc that has a wide range of bass lines in the music...

Page 9: ... calibration menu in the Pre Pro or receiver setup menu and use the on board calibration tones of your preamp to adjust the subwoofer level or a setup disc if you prefer and remember to set the master volume to 0 before you begin this step 2 Many people like to run the subwoofer hot that is louder than it should be This is a personal preference but not an option at this point in setup You re looki...

Page 10: ...proximately 20 degrees above 0 degrees 0 20 degrees and run another sweep and chart the graph 2 Advance the phase control another 20 degrees 0 40 degrees and run another sweep and chart the graph 3 Advance the phase control another 20 degrees 0 60 degrees and run yet another sweep and chart the graph 4 Use a different color for each graph and notate what setting of phase was used for each color 5 ...

Page 11: ...thod the accuracy of the RS meter becomes irrelevant because the only thing that matters is that the subwoofer and the mains are at the same level at 80 Hz the crossover point 7 The meter will read the same at 80 Hz every time Whether or not it s an accurate reading it will level the sub to the mains at the crossover point by this method accurately Since the satellites are already calibrated the s...

Page 12: ...y Selection Control Use this control to center the EQ s effect at a particular frequency You can start with 40 Hz and adjust the controls mentioned next to get an idea of what the EQ does to the signal that s feeding your subwoofer 2 Bandwidth Control This is just what its name implies It controls the width of the band of frequencies around the frequency that you centered on with the first control...

Page 13: ...ne as outlined for phase adjustment of a single subwoofer The only difference is that you should do 1 subwoofer while the second subwoofer is off then turn on the second subwoofer with all other speakers and the first subwoofer on and adjust the phase of the second subwoofer The phase adjustment of the second subwoofer can be done by playing an 80 Hz sine wave test tone and dialing the second subw...

Page 14: ...e screen name is Soundhound and who frequents the OUTLAW SALOON forum is an avid proponent of stereo subwoofers If you find this configuration to be the one you d like to use I highly recommend visiting that site and asking your question directed at Soundhound or searching the threads on various subwoofer connection schemes in which we ve discussed them at length This is the standard configuration...

Page 15: ... in a collapse of the stereo effect I ve been chided for this and many others opinion but I stand by it Of course if you like stereo CD formatted live acoustic types of music this configuration definitely adds to the listening experience with a sense of realism and added space or air I ve used this setup and found this to be the case DUAL SUBWOOFERS REBASE ROUTING CONFIGURATION This one is my baby...

Page 16: ... the LFE signal to the LFE subwoofer Most players have a global 120 Hz low pass filter on their analog SW output check your manual If not you can use the filter that s built into your powered subwoofer s plate amplifier You can set the filter to any point that sounds best to you as this filter is unrelated to the rest of your bass management in the system 2 The Pre Pro or Receiver or ICBM SW outpu...

Page 17: ...tion of your system when playing any source that contains LFE information You ll be able to have a bottom feeding LFE monster and a tight musical subwoofer in the same system as contrary to some subwoofer manufacturer s hype one subwoofer design cannot do both exceptionally well When playing music formats if you have a musical subwoofer for redirected bass you can reduce the volume of the LFE subw...

Page 18: ...t there is enough information to get you well on your way to understanding how to get the most benefit from the system you ve labored over to research purchase and set up Please offer any input in the way of information that I ve missed or omitted and especially any tweaks or discoveries you may stumble across or otherwise discover Dave ...

Page 19: ... 15 This is what happens 16 D DUAL SUBWOOFERS MONO CONFIGURATION Asymmetric Placement Of Dual Subwoofers Asymmetric Not symmetric 13 F FINAL THOUGHTS 18 O Overview 6 Calibration discs 6 S STEP 1 POLARITY TEST 7 STEP 2 FIRST LEVEL ADJUSTMENT 7 STEP 3 PLACEMENT 7 STEP 4 LEVEL ADJUSTMENT 9 STEP 5 RELATIVE PHASE ADJUSTMENT 9 STEP 6 FINAL LEVEL ADJUSTMENT 10 Subwoofer Setup Tips And Procedures 4 Tools ...

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