User manual INFINITY KAPPA 102.7W 104.7W 122.7W 124.7W

[. . . ] Infinity accepts no liability for hearing loss, bodily injury, or property damage as a result of use or misuse of this product. CHOOSING AN ENCLOSURE Kappa Series subwoofers are designed to perform best in moderately sized sealed enclosures, vented enclosures and prefabricated bandpass enclosures. Infinite-baffle mounting is possible, but mechanical power handling will be reduced because there will be no volume of air to stiffen the woofer's suspension and prevent overexcursion. If you choose infinitebaffle mounting, consider the RMS and Peak power handling ratings to be half of what is printed in the specifications chart in this manual. You should choose an enclosure type based on the amount of cargo space you can devote to an enclosure, the amount of power you will use to drive your subwoofer(s), and your listening habits. [. . . ] Since the woofer doesn't move much at resonance, airflow across the voice coil is minimized and thermal power handling is reduced slightly at resonance. Vented enclosures provide better efficiency in the 40Hz ­ 60Hz range, at the expense of sound output in the lowest octave (below 40Hz). We recommend the use of a subsonic filter with vented enclosures. An optimum vented enclosure for a Kappa Series subwoofer is larger than an optimum sealed enclosure. We recommend Infinity Kappa Series woofers in vented enclosures for enthusiasts who prefer accentuated bass response, for those who have plenty of cargo space to devote to a subwoofer enclosure and for those who will use a less powerful amplifier to drive their subwoofers. Vented-enclosure construction is more difficult than the construction of a sealed enclosure. The enclosure volume and port dimensions have a specific relationship with the characteristics of the subwoofer, so the volume and port dimensions indicated on the included Enclosure Design Sheet must be followed precisely to ensure optimum performance. As with sealed enclosures, use medium-density fiberboard (MDF), glue and screws to construct the enclosure, and seal all joints with silicone caulk. BANDPASS ENCLOSURES Bandpass enclosures can provide the most output from any amplifier and woofer combination over a limited band of frequencies, but that additional output comes at the expense of sonic accuracy. If the highest sound-pressure level (SPL) is your ONLY design goal, choose a bandpass enclosure. The bandpass enclosure found on the included Enclosure Design Sheet is a combination of a sealed enclosure and a vented enclosure. The sealed enclosure stiffens the suspension of the woofer, just as it does in a simple sealed enclosure, and the vented enclosure into which the woofer outputs sound provides an acoustic low-pass filter which attenuates high frequencies in the woofer's output. That attenuation of high frequencies can make it very difficult to hear amplifier and speaker distortion; consequently, you may not be able to determine when the subwoofer is in danger of being damaged. An optimum bandpass enclosure is often larger than an optimum vented enclosure. We recommend bandpass enclosures only for enthusiasts who want high SPL without regard for sonic accuracy. If high SPL is your goal AND you care about great-sounding bass, choose a vented enclosure instead. KAPPA SUB OM 1/24/06 11:32 AM Page 3 CHOOSING AN ENCLOSURE (CONT. ) Bandpass-enclosure construction is more difficult than vented box construction and, as with vented enclosures, the design parameters for the vented section must be followed carefully. Small errors in calculating the volume of and building the sealed section won't drastically alter the result. Fortunately, there are many prefabricated bandpass enclosures that are designed to extract the most output possible from nearly any woofer. We recommend these if you must have a bandpass enclosure. If you choose to build your own bandpass enclosure, use MDF , glue and screws to construct the enclosure, and be sure to seal all joints with silicone caulk. [. . . ] (w= impedance of any individual woofer) For several woofers connected in series-parallel, use both formulae to determine the final system impedance. The following table can serve as a reference for often-used combinations: woofer impedance (ohms) 1 1 1 1 1 1 2 2 2 2 2 2 4 4 4 4 4 8 8 8 number final of connection impedance woofers scheme (ohms) 2 parallel 0. 5 3 parallel 0. 33 4 series-parallel 1 2 series 2 3 series 3 4 series 4 2 parallel 1 3 parallel 0. 66 4 series-parallel 2 2 series 4 3 series 6 4 series 8 2 parallel 2 3 parallel 1. 33 4 parallel 1 4 series-parallel 4 2 series 8 4 2 parallel 3 parallel 2. 66 4 parallel 2 Figure 3. Series connection The following illustrations show parallel and series connections of Kappa woofers. Four woofers connected in series-parallel POWER CONSIDERATIONS To design a subwoofer system that maximizes available amplifier power, keep the following rules in mind: The formula for total system impedance for woofers connected in parallel is: I=1/(1/w1+1/w2+1/w3. . . ) kappa series KAPPA SUB OM 1/24/06 11:32 AM Page 4 SPECIFICATIONS 102. 7w Type: Nominal Impedance: Power Handling: Sensitivity (2. 83V, 1m): Frequency Response: Mounting Depth: Cutout Diameter: 104. 7w Type: Nominal Impedance: Power Handling: Sensitivity (2. 83V, 1m): Frequency Response: Mounting Depth: Cutout Diameter: 10" Subwoofer, dual-voice coil 1 ohm or 4 ohms 350W RMS, 1400W Peak 89dB 20Hz ­ 250Hz 4-3/4" (121mm) 9-1/8" (232mm) 122. 7w Type: Nominal Impedance: Power Handling: Sensitivity (2. 83V, 1m): Frequency Response: Mounting Depth: Cutout Diameter: 124. 7w Type: Nominal Impedance: Power Handling: Sensitivity (2. 83V, 1m): Frequency Response: Mounting Depth: Cutout Diameter: 12" Subwoofer, dual-voice coil 1 ohm or 4 ohms 350W RMS, 1400W Peak 92dB 18Hz ­ 250Hz 5" (127mm) 11-1/8" (283mm) 10" Subwoofer, dual-voice coil 2 or 8 ohms 350W RMS, 1400W Peak 87dB 20Hz ­ 250Hz 4-3/4" (121mm) 9-1/8" (232mm) 12" Subwoofer, dual-voice coil 2 or 8 ohms 350W RMS, 1400W Peak 90dB 18Hz ­ 250Hz 5" (127mm) 11-1/8" (283mm) Declaration of Conformity We, Harman Consumer Group International 2, route de Tours 72500 Château du Loir France A valid serial number is required for warranty coverage. 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