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KQ30 Equalizer Technical Manual

Version 1.0

January 1, 2002

KQ30 Technical Manual

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Summary of Contents for KQ30

Page 1: ...KQ30 Equalizer Technical Manual Version 1 0 January 1 2002 KQ30 Technical Manual ...

Page 2: ...erything we can hear falls within this 20 Hz to 20 kHz range Unless you re my cousin Bernie who claims he can hear grass grow but that s another story Ok so now we know what an octave is and what the 10 octaves of the human hearing range are What is 1 3 octave Well it is simply the same 20 Hz to 20 kHz range broken into 1 3 octave slices To calculate 1 3 octave intervals is pretty easy too You sim...

Page 3: ...dials to adjust 60 Ouch and no better audible results than a finely tuned 1 3 octave unit In other words a lot more work for no audible benefit Even the Super Tweaks at Kicker who just love to play with buttons switches and dials agree that 1 3 octave is the way to go The chart below gives you a good idea where some of the musical instruments and voices operate within the 1 3 octave scale The Fund...

Page 4: ...amount of boosting and cutting will really make your system shine KQ30 Equalizer Technical Manual Version 1 0 January 1 2002 Page 4 Introduction Frequency Range Affected Area Results Of Excessive Boost 16 Hz 60 Hz Sense of power music is felt more than heard Makes music sound muddy 60 Hz 250 Hz Fundamentals of the rhythmic section Equalizing here can change the musical balance making it fat or thi...

Page 5: ...g crossover phasing or simple vehicle acoustics If this is the case then address these issues separately See your Kicker dealer for more details and help in correcting these issues 5 Your ears are always right No matter how good or bad it looks on the RTA if it sounds bad it sounds bad Period Let the RTA guide you and your ears tell you if it is right If you do not have access to a RTA you can sti...

Page 6: ...g when you want clean sound The LED indicators are a great tool to help you in setting up the input gain controls on your KQ30 These indicators will blink as you get within 3 dB of clipping the input section of your unit Separate Left and Right Output Clipping LED s Just as with the input you do not want to clip the output of your KQ30 The output LED indicators will blink as you get within 3 dB of...

Page 7: ...n Now that you are ready to mount your equalizer use the KQ30 chassis as a template and mark the four mounting hole locations with a marking pen or pencil 30 Pen or Pencil Next remove the KQ30 from the mounting location and using a drill with a 7 64 inch drill bit pre drill the four mounting locations you marked in the above step 7 64 inch Drill Bit EQ removed from mounting location Pre drill the ...

Page 8: ...ce using 18 Ga wire and an in line 5 amp fuse The KQ30 itself has a 2 amp chassis fuse for protection The additional 5 amp in line fuse is to protect the wire feeding the KQ30 and should be placed as close as pos sible to the battery Fig 2 If you have a fused distribution block in the rear of your vehicle to distribute power to your amplifiers and it has an extra tap you can use this in place of t...

Page 9: ...n the chance of getting any induced noise Fig 5 Fig 6 If you have to route the interconnects parallel to factory wiring or other electrical cable keep the distance they run parallel as short as possible The longer the RCA cable is parallel with these types of cables the greater the chance of picking up induced noise Fig 6 Fig 7 Wiring Instructions To Source To KQ30 Factory Wiring Fig 1 Fig 2 KQ30 ...

Page 10: ...ring and inject it into your audio system Finally do not use an excessively long interconnect cable Fig 6 You want to use just enough cable to get from your source unit to the KQ30 and just a little bit extra for usability and serviceability Typically 6 12 inches per end is plenty of extra cable to accomplish this For example if the distance from your source unit to the KQ30 is 17 feet Dashed line...

Page 11: ...heck the STEREO MONO and the EQ BYPASS switches and make sure they are in the STEREO and EQ out posi tions Fig 2 Source Unit RCA Outputs To Crossover or Amplifier s INPUT L R OUTPUT L R SOURCE UNIT KQ5 KQ5 RCA Inputs KQ5 RCA Outputs L L L L L R R R L R R R 30 Fig 3 RCA Outputs To Crossover or Amplifier INPUT L R OUTPUT L R SOURCE UNIT L R L R L R L R 30 Fig 1 KQ30 Equalizer Technical Manual Versio...

Page 12: ... channel RCA output from KQ30 number 2 to the Right channel input of your electronic crossover or amplifier s KQ30 number 2 is now the equalizer for just the Right channel of your system Fig 1 Check the STEREO MONO switch on both KQ30s and make sure they are in the MONO in position Also check the EQ BYPASS switch on both KQ30s and make sure they are in the EQ out posi tions Fig 2 When using the KQ...

Page 13: ...in this setup the Right channel Output of each unit is identical to the Left channel of that unit This is helpful if you need an additional Left or Right stereo channel out put to feed another device KQ30 Equalizer Technical Manual Version 1 0 January 1 2002 Page 13 Wiring Instructions R Either Input can be used but use only one L Either Input can be used but use only one To Left Channel Input of ...

Page 14: ...l Left Right summed mono signals L Left channel R Right channel M Mono L R RCA Outputs To Crossover or Amplifier INPUT L R OUTPUT L R SOURCE UNIT L R L R M M M M 30 KQ30 Equalizer Technical Manual Version 1 0 January 1 2002 Page 14 Wiring Instructions Fig 1 EQ BYPASS Switch Out STEREO MONO Switch In EQ BYPASS STEREO MONO Got a pre amplifier like the KICKER KQ5 too You know the drill by now Fig 2 L...

Page 15: ... the RCA leads be sure to do this with your system off 3 Set all the equalization controls on the KQ30 to their center detent 0 dB position 4 Set the Input Gain controls on the KQ30 at their minimum fully counter clock wise position 5 Set the Output Level controls on the KQ30 at their minimum fully counter clock wise position 6 Using a well recorded CD with a strong signal or better yet a continu ...

Page 16: ...s located at approximately ear level Next you want to place a CD into your source unit which contains a continuous pink noise recording The various competition organizations sell CDs with this recording on them or track 18 from the AutoSound 2000 Test CD 102 could be used Be sure to place your source unit into Track Repeat mode so it will keep playing the pink noise track only Now with the RTA in ...

Page 17: ...flat line The short answer is no The long answer is no unless you just want a flat line for showing you can do it Many competitors will shoot for the flat line so they can get a perfect score in the RTA judging section of a contest but for listening a flat line would sound fairly dull and lifeless That is why they use separate EQ s and switch between them One for the RTA judging set up to get as c...

Page 18: ...while your friend does not So you both can have smooth response curves that look different because they are based on how you like it to sound Fig 1 Fig 2 Neither curve is more right it just depends on what you like the sound of The one thing you do notice is that each 1 3 octave band is within 3 dB 3 dots of the next band So what does a bad curve look like Check out Figure 3 Notice how 31 5 Hz is ...

Page 19: ...turn down the Left channel Output Level control until it matches the Right channel Skip step 9c and proceed to step 10 9c If the Right channel reading is higher than the Left turn down the Right channel Output Level control until it matches the Left channel 10 Turn the source unit down and shut off the system 11 Reconnect the RCA cables to your KQ30 That s it you are now ready to enjoy the full ca...

Page 20: ...e KQ30 and has a blank area to use as a notes page Here you can scribble down any little tidbits that you may need to know later about how you installed this unit or adjusted it Alternate uses of page 21 are Clean place to hold that slice of cold pizza you ordered two hours ago and never got to eat Your latest theories on why time travel is possible A napkin Page 22 has a blank KQ30 settings templ...

Page 21: ...ge 9 Volts RMS Maximum output voltage 9 Volts RMS SNR signal to noise A Weighted Re 9 Volts 120 dB Channel Separation Re 9 Volts 80 dB Equalization 30 bands 1 3 octave centering 12 dB per band measured in Hz Dimensions Width 10 25 in 26 04 cm Depth 7 50 in 19 05 cm Height 1 125 in 2 86 cm 25 31 5 40 50 63 80 100 126 156 200 250 320 400 500 635 800 1K 1 27K 1 6K 2K 2 5K 3 2K 4K 5K 6 4K 8K 10K 12 8K...

Page 22: ... kHz 2 kHz 2 5 kHz 3 2 kHz 4 kHz 5 kHz 100 Hz 126 Hz 156 Hz 200 Hz 250 Hz 320 Hz 6 4 kHz 8kHz 10 kHz 12 8 kHz 16 kHz 20 kHz 400 Hz 500 Hz 635 Hz 800 Hz 1 kHz 1 27 kHz 25 Hz 31 5 Hz 40 Hz 50 Hz 63 Hz 80 Hz INPUT GAIN OUTPUT LEVEL Min Max L Min Max R Min Max L Min Max R OUTPUT INPUT 30 ...

Page 23: ... Dealer for warranty Assistance in locating an Authorized Dealer can be obtained by writing or calling Stillwater Designs direct You can confirm that a dealer is authorized by asking to see a current authorized dealer window decal If it becomes necessary for you to return defective merchandise call the Kicker Customer Service Department at 405 624 8510 for a Return Authorization RA number Package ...

Page 24: ...Stillwater Designs P O Box 459 Stillwater OK 74076 USA 405 624 8510 www Kicker com ...

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