Infinity KAPPA PERFECT 10VQ Car Subwoofer
Contents
1. W Infinity CHOOSING AN APPLICATION AND ENCLOSURE PERFECT VQ IN BANDPASS Highlighted combinations are optimum ENCLOSURES In Car In Car Vbs ft43 Vbv ft43 Pd in PL in F3 Hz Fmax Hz Insert Bandwidth Hz Fmax Hz Use the sample curve and the charts Kappa Perfect10 VO and 10d VO Bandpass that follow to choose the bandpass 0 6 0 35 3 10 42 82 65 low 20 80 2 30 box that best suits your application 0 6 0 35 3 10 40 80 70 mid 20 80 5 27 m dditional terms used with 0 6 0 75 4 11 5 35 70 70 none 20 70 4 35 a p 3 P i cee T ti Kappa Perfect12 VQ and 12d VQ Vented an pass enclosure specifications are 1 1 4 10 5 33 68 51 low 20 60 0 40 defined below We recommend the 2 4 6 8 40 70 55 mid 20 65 1 5 26 use of round flared ports to minimize 2 1 2 4 10 30 63 55 none 20 55 6 26 distortion caused by air moving through the port at high output Perfect VQ Band e Vbs Sealed enclosure volume om IN CAR Fmax 2 27Hz BAN e Vbv Vented enclosure volume Fax 55Hz e Bandwidth Indicates the passband range of frequencies between the region of high frequency attenuation and the region of low frequency attenuation e In car bandwidth Indicates the passband with the enclosure mounted in the car 65 20 Frequency 50 OTHER APPLICATIONS Although there are quite a few enclosures and applications listed her2. 1 1997 Infinity Systems 250 Crossways Park Drive Woodbury NY 11797 USA 800 553 3332 FAX 516 682 3523 www infinitysystems com Y Infinity 2002 Harman International Industries Incorporated P N PERF10 12 dVOOM Printed 11 02 TECHNOLOGY PERFORMANCE DESIGN HI A Harman International Company Emmanuel Millot Harman Consumer International Chateau du Loir France 11 02
3. free air mounting allows for greater excursion than does mounting subwoofers in enclosures The power handling of a subwoofer mounted in an infinite baffle will be reduced by nearly half its rated power handling spec Voice coil overheating and burning have only one cause exposure to too much power for too long An amplifier driven into severe clipping or square wave can output much more average power than the average power of a clean sine wave of the same level Audible distortion in the sound is a clear indication of amplifier clipping and should serve as an indication that your speakers may be in danger of being damaged Kappa Perfect VO Series subwoofers are unique because they provide variable Q Q adjustments may allow the subwoofer to be optimized for a particular enclosure or applica tion and may provide the user with optimum performance for several applications in a single enclosure The frequency response of every speaker includes three distinct regions characterized by flat amplitude pass band high frequency attenuation stopband high or low frequency attenuation stopband low see Figure 1 Midrange speakers and to a lesser extent tweeters are used to reproduce frequencies in the region where they exhibit flat frequency response Subwoofers on the other hand are used in a region of low frequency attenuation but those low frequencies are what we want the subwoofer to reproduce Subwoofer syste
4. greatest detriment to speaker longevity so overexcursion should be avoided Since excursion characteristics are very different for each type of enclosure power handling will be different for each enclosure type Sealed enclosures exert the most control over the motion of the sub woofer at the very lowest frequencies because the air inside the box acts as a spring opposing the motion VARIABLE Q PATENT PENDING of the woofer s cone Larger boxes allow more excursion providing more low frequency output than the same woofer in a smaller box for any input power level When placed in a sealed box much larger than the equivalent compliance Vas of the subwoofer it will perform as if it were in an infinite baffle application with the attendant lower excursion limited power handling Vented and bandpass enclosures allow the least excursion for the amount of sound output near and above the resonance frequency of the enclosure The mass of air contained in the port provides an acoustic load to the woofer s cone at the tuning frequency and this added mass decreases excursion so that the subwoofer s motor is essentially coupled to the air in the port Vented boxes do not provide adequate control below the frequency at which the box is tuned so proper design and a subsonic filter are important A vented bandpass box will allow the least cone excursion provided a subsonic filter is used Infinite baffle or
5. 6 ohms Voice Coil Inductance Levc 1 2mH 8mH 1 14mH 81mH Driver Radiating Area Sd 344 ft 0323M42 344 ft 0323M2 441 ft 0491M42 441 ft 0491M 2 Motor Force Factor BL w Low Insert 15 05 11 5532 15 55 11 86 w MidQ Insert 13 05 9 33 12 19 9 6 w No Insert 10 49 8 1 9 67 8 28 Compliance Volume Vas 1 61 ft 45 88 L 1 32 ft 37 65 L 3 38 ft 96 43 L 3 31 ft 94 28 L Suspension Compliance Cmd 309 68uM N 254 13uM N 281 68uM N 275 39uM N Moving Mass Air Load Mms 153 44g 157 9g 182 7g 189 8g Moving Mass Diaphragm Mmd 150 19 154 56g 176 44g 183 54g Free Air Resonance Fs 23 09Hz 25 13Hz 22 19Hz 22 01Hz Mechanical Q Oms 9 67 10 24 10 29 10 52 Electrical Q Qes w Low0 Insert 33 31 36 31 w MidQ Insert 44 46 5 47 w No Insert 68 61 19 64 Total Q Ots w LowQ Insert 32 30 34 30 w MidQ Insert 42 44 47 46 w No Insert 63 57 74 60 Magnetic Gap Height Hag 3 8 10mm 3 8 10mm 3 8 10mm 3 8 10mm Voice Coil Height Hvc Maximum One Way Linear Excursion Xmax A valid serial number is required for warranty coverage 1 11 16 43 5mm 11 16 16 75mm 1 11 16 43 5mm 11 16 16 75mm 1 11 16 43 5mm 11 16 16 75mm 1 11 16 43 5mm 11 16 16 75mm Declaration of Conformity CE We Harman Consumer International 2 route de Tours 72500 Chateau du Loir FRANCE declare in own responsibility that the products described in this owner s manual are in compliance with technical standards EN 50081 1 1992 EN 50082
6. WINfinity kappa series perfectlU VQ L0d VQ le V d VQ subwoofer instructions W P RE CT Thank YOU for purchasing an Infinity Kappa Perfect VO subwoofer Kappa Perfect VO subwoofers are engineered to provide unparalleled audio reproduction at even the highest output levels and are constructed using state of the art materials for unequalled performance and longevity To ensure the best subwoofer performance possible we recommend that a qualified professional perform the installation Although these instructions provide enclosure specifications and explain how to install a Kappa Perfect VO subwoofer in a general sense they do not show specific box construction details or vehicle specific installation methods If you don t feel you have the knowledge experience or necessary skills to install the subwoofer yourself ask your authorized Infinity dealer about professional installation options Remember to keep your sales receipt and this manual in a safe place so they re available for future reference INTRODUCTION A FEW WORDS ABOUT POWER HANDLING The power handling capability of any woofer is related both to its ability to dissipate heat and to the maximum excursion limits of its suspension Once the speaker s voice coil moves outside the magnetic gap power can no longer be converted into motion and all the amplifier s power is converted into heat in the voice coil Voice coil heating is the
7. e there are many other applications that may suit your preferences If you have a computer and enclosure design software the following Thiele and Small parameters and the afore mentioned examples will provide you with all the information and a starting point from which you can experiment Because the inserts may be installed and removed repeatedly you may find that a particular enclosure may serve several applications using different inserts However if you are using several Kappa Perfect VO woofers in a single enclosure the woofers must all use identical inserts simultaneously THIELE AND SMALL PARAMETERS Perfect10 VQ Perfect10d VO Perfect12 VO Perfect12d VQ Diameter 10 250mm 10 250mm 12 300mm 12 300mm Sensitivity 2 83V 1m 87dB 90dB 89dB 92dB Power Handling 400W RMS 1600W Peak 400W RMS 1600W Peak 400W RMS 1600W Peak 400W RMS 1600W Peak Frequency Response 25Hz 400Hz 25Hz 400Hz 23Hz 400Hz 23Hz 400Hz Impedance per voice coil 4 ohms 4 ohms 4 ohms 4 ohms Voice Coil Diameter 3 77mm 3 77mm 3 77mm 3 77mm Mounting Depth 6 1 2 166mm 6 1 2 166mm 7 178mm 7 178mm Overall Diameter Cut Out Diameter Basket Displacement 10 1 2 267mm 9 5 16 237mm 072 ft 3 2 04 L 10 1 2 267mm 9 5 16 237mm 072 ft43 2 04 L 12 3 8 315mm 10 7 8 277mm 108 ft 3 3 06 L 12 3 8 315mm 10 7 8 277mm 108 ft 3 3 06 L Voice Coil DC Resistance Reve 3 32 ohms 1 66 ohms 3 42 ohms 1 6
8. er ripple values indicate a boomier sound and provide higher output at the expense of flat frequency response and low frequency extension PERFECT VO IN SEALED ENCLOSURES Vb ft 3 F3 Hz Fmax Hz Ripple dB Insert In Car Level 20Hz Kappa Perfect10 VQ and 10d VQ Sealed The sample curve below shows typical 03 58 100 03 low in car and out of car frequency response 0 4 53 100 1 low curves for a Perfect VQ woofer in a 0 5 45 80 1 mid sealed enclosure The charts that follow 0 75 42 90 0 mid g 1 35 54 2 none give some sealed enclosure volumes infinite baffle 26 90 mae that may be used for each of the Kappa Perfect12 VO and 12d VO Sealed Perfect VO woofers The associated 0 4 60 100 low terms defined below describe the 0 6 58 100 low woofer s performance in the enclosure 09 76 mid 1 42 62 mid e Vb Enclosure volume 1 25 35 50 none infinite baffle 20 80 none e F3 Frequency at which the subwoofer s output is attenuated by 3dB e Fmax Frequency at which output is at a maximum ied cae ees eel Fmax 100Hz e Ripple Deviation from flat response a E RIPPLE 3dB above roll off 34B e Insert Indicates which insert should be used LowQ MidO or none e In car level 20Hz Indicates level at the lowest frequency A positive number indicates a response that rises with decreasing frequency and a negative number indicates a response the falls with decreasing frequency co
9. he woofer s polepiece will provide the highest motor force and conse quently the lowest O see Figure 3 The smaller of the two inserts MidQ will provide less motor force and somewhat higher O and the woofer used without an insert will have a much higher Q continued O 19 Figure 3 PERATING RANGE RESONANCE Fs MASS CONTROLLED STIFFNESS CONTROLLED 20 Frequency 50 Figure 2 Subwoofer operating range VARIABLE Q CONTINUED Kappa Perfect VO woofers are designed to provide optimum system Q and frequency response in infinite baffle applications or in very large enclosures with no insert installed in the polepiece The smaller of the two inserts is intended to be used with woofers mounted in medium sized sealed boxes and vented boxes The largest insert is intended to provide optimum Q for very small sealed or vented boxes or for use with woofers used in SPL competition where the enclosure is designed to provide the highest output possible at a single frequency While it may seem that the most forceful motor will provide the best performance in all applications in reality that is not the case When a woofer is mounted in an enclosure the resonance of the woofer becomes the resonance of the combination of the air inside the box and the woofer and Ots speaker Q becomes Otc system 0 For example Figure 4 shows the res
10. m design is almost entirely an effort to extend the region of flat response to the lowest possible frequency or to shape the frequency response in the band of reproduced frequencies Qes and consequently Qts are the parameters that best describe the behavior of a subwoofer in the range of frequencies it is most often used to reproduce Figure 1 Frequency response of a speaker W Infinity VARIABLE Q The operation of a subwoofer or any moving coil loudspeaker is divided into two regions Below resonance where the motion of the cone is stiffness controlled the subwoofer s suspension does a great deal of the work of opposing the inertia of the moving assembly the stiffness of the suspension controls the motion of the cone Above resonance where the motion of the cone is mass controlled the subwoofer s suspension has little effect on the motion of the cone and the motor must do all the work of opposing the inertia of the moving assembly the motor controls the motion of the cone Opposing inertia simply means starting and stopping the motion of the cone The metal inserts included with your Kappa Perfect VO Series woofer are used to adjust the amount of force the motor can exert on the inertia of the moving assembly The largest of the two inserts LowQ when installed in t
11. ntinued 20 Frequency 50 CHOOSING AN APPLICATION AND ENCLOSURE CONTINUED PERFECT VO IN VENTED ENCLOSURES Use the sample curve and the charts at right to choose the vented box that 1 25 best suits your application Some 1 75 additional terms used with vented 1 75 enclosure specifications are defined 25 2 5 below We recommend the use of 25 round flared ports to minimize distortion caused by air moving 1 75 through the port at high output oa e Pd Port diameter 2 25 3 e PL Port length 3 e In car Fmax Vented enclosure and woofer systems always exhibit a peak in their frequency response in the car This term indicates the frequency of the peak and its amplitude 65 Pd in 4 4 4 4 4 4 PL in 11 5 12 75 11 5 9 5 11 14 5 14 14 10 5 16 13 Highlighted combinations are optimum Vb ft43 Kappa Perfect10 VO and 10d VO Vented F3 Hz 28 21 27 15 17 20 Kappa Perfect12 VO and 12d VQ Vented 27 25 28 30 22 28 a 1 5dB 30Hz Fmax Hz 35 27 32 24 25 21 36 32 38 40 32 35 Perfect VQ Vented Insert In Car Fmax Hz low mid mid mid mid none low low mid mid mid none 10 30 12 25 13 30 16 23 15 25 16 20 11 30 12 28 13 30 15 35 15 22 16 30 20 Frequency 50
12. ponse of a Kappa Perfect VQ subwoofer in a sealed box optimized for use with the MidOQ insert Pictured on the graph are the responses of the woofer and enclosure combination with YSTEM RESONANCE Fe the Low0 insert installed with the MidO insert installed and without an insert installed HighQ The difference in the performance of the woofer with its various adjustments is increased output at and slightly above system resonance Fc with increasing Q but reduced output at the lowest reproduced frequencies The reduced motor force supplied by the lower O designs results in reduced sensitivity SPL 2 83V 1m but the effects of that reduced sensitivity are greatest above 100Hz Subwoofers in cars are typically used for frequencies below 100Hz so the reduced sensitivity is inconsequential The difference in behavior for vented and bandpass enclosures is similar but the enclosure design is more complex and should be given special attention Although Kappa Perfect VO subwoofers were designed with specific uses for the inserts in mind there are many different enclosure and insert combinations that may suit your taste The intended combinations are highlighted as optimum on the charts in the section titled Choosing an Application and Enclosure several other applications are also included SENSITIVITY Ss CROSSOVER L TYPICAL LOW PASS FREQUENCY Freq
13. uency 50 Figure 4 Effects of Variable Q INSTALLING AND REMOVING THE INSERTS Your Kappa Perfect VO subwoofer is shipped from the factory without an insert installed After determining which application and enclosure is most suitable for your system install the appropriate insert in the woofer s polepiece by aligning the insert with the hole in the woofer s polepiece and simply dropping the insert into place see Figure 5 Figure 5 Installing the insert To remove the insert squeeze the insert tool to compress the area between the two tabs insert the end of the tool into the vent in the center of the insert and align the two tabs with the two small holes inside the vent The tabs should lock into the two holes Pull firmly on the tool to remove the insert See Figure 6 Figure 6 Removing the insert Note Magnetic force holds the insert in place Don t be afraid to pull hard on the insert to remove it W Infinity CHOOSING AN APPLICATION AND ENCLOSURE Study the sample curves on pages 5 6 and 7 and read each explanation carefully The charts that follow specify enclosure volumes and vent dimensions where applicable and indicate the shape of the response curve both in car and out of car a _ E The highlighted combinations will provide the best compromise between low frequency extension and flat response and high output and are considered optimum High
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