Alpine IVA W505 Owners Manual - Page 246
About the Crossover, Crossover X-OVER, 2ch FRONT/REAR/SUBW. mode, 2ch 3WAY mode
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These values are the time correction values for the different speakers. Setting these values to make each sound reach the listening position at the same time as the sound of other speakers. Time Correction Value List Delay Number Time Difference (ms) Distance (cm) Distance (inch) Delay Number Time Difference (ms) Distance (cm) Distance (inch) 0 0.0 0.0 0.0 51 5.1 173.4 68.3 1 0.1 3.4 1.3 52 5.2 176.8 69.7 2 0.2 6.8 2.7 53 5.3 180.2 71.0 3 0.3 10.2 4.0 54 5.4 183.6 72.4 4 0.4 13.6 5.4 55 5.5 187.0 73.7 5 0.5 17.0 6.7 56 5.6 190.4 75.0 6 0.6 20.4 8.0 57 5.7 193.8 76.4 7 0.7 23.8 9.4 58 5.8 197.2 77.7 8 0.8 27.2 10.7 59 5.9 200.6 79.1 9 0.9 30.6 12.1 60 6.0 204.0 80.4 10 1.0 34.0 13.4 61 6.1 207.4 81.7 11 1.1 37.4 14.7 62 6.2 210.8 83.1 12 1.2 40.8 16.1 63 6.3 214.2 84.4 13 1.3 44.2 17.4 64 6.4 217.6 85.8 14 1.4 47.6 18.8 65 6.5 221.0 87.1 15 1.5 51.0 20.1 66 6.6 224.4 88.4 16 1.6 54.4 21.4 67 6.7 227.8 89.8 17 1.7 57.8 22.8 68 6.8 231.2 91.1 18 1.8 61.2 24.1 69 6.9 234.6 92.5 19 1.9 64.6 25.5 70 7.0 238.0 93.8 20 2.0 68.0 26.8 71 7.1 241.4 95.1 21 2.1 71.4 28.1 72 7.2 244.8 96.5 22 2.2 74.8 29.5 73 7.3 248.2 97.8 23 2.3 78.2 30.8 74 7.4 251.6 99.2 24 2.4 81.6 32.2 75 7.5 255.0 100.5 25 2.5 85.0 33.5 76 7.6 258.4 101.8 26 2.6 88.4 34.8 77 7.7 261.8 103.2 27 2.7 91.8 36.2 78 7.8 265.2 104.5 28 2.8 95.2 37.5 79 7.9 268.6 105.9 29 2.9 98.6 38.9 80 8.0 272.0 107.2 30 3.0 102.0 40.2 81 8.1 275.4 108.5 31 3.1 105.4 41.5 82 8.2 278.8 109.9 32 3.2 108.8 42.9 83 8.3 282.2 111.2 33 3.3 112.2 44.2 84 8.4 285.6 112.6 34 3.4 115.6 45.6 85 8.5 289.0 113.9 35 3.5 119.0 46.9 86 8.6 292.4 115.2 36 3.6 122.4 48.2 87 8.7 295.8 116.6 37 3.7 125.8 49.6 88 8.8 299.2 117.9 38 3.8 129.2 50.9 89 8.9 302.6 119.3 39 3.9 132.6 52.3 90 9.0 306.0 120.6 40 4.0 136.0 53.6 91 9.1 309.4 121.9 41 4.1 139.4 54.9 92 9.2 312.8 123.3 42 4.2 142.8 56.3 93 9.3 316.2 124.6 43 4.3 146.2 57.6 94 9.4 319.6 126.0 44 4.4 149.6 59.0 95 9.5 323.0 127.3 45 4.5 153.0 60.3 96 9.6 326.4 128.6 46 4.6 156.4 61.6 97 9.7 329.8 130.0 47 4.7 159.8 63.0 98 9.8 333.2 131.3 48 4.8 163.2 64.3 99 9.9 336.6 132.7 49 4.9 166.6 65.7 50 5.0 170.0 67.0 About the Crossover Crossover (X-OVER): This unit is equipped with an active crossover. The crossover limits the frequencies delivered to the outputs. Each channel is controlled independently. Thus, each speaker pair can be driven by the frequencies for which they have been optimally designed. The crossover adjusts the HPF (high pass filter) or LPF (low pass filter) of each band, and also the slope (how fast the filter rolls off the highs or lows). Adjustments should be made according to the reproduction characteristics of the speakers. Depending on the speakers, a passive network may not be necessary. If you are unsure about this point, please consult your authorized Alpine dealer. 4.2ch (FRONT/REAR/SUBW.) mode Low range speaker Rear high range speaker Front high range speaker Cut-off frequency (1/3 octave steps) Slope HPF LPF HPF LPF FLAT, 6, ---- 20 Hz 200 Hz ---- 12, 18, 24 dB/ oct. 20 Hz 200 Hz FLAT, 6, ---- 12, 18, 24 dB/oct. ---- 20 Hz 200 Hz FLAT, 6, ---- 12, 18, 24 dB/oct. ---- Level 0 to -12 dB 0 to -12 dB 0 to -12 dB Low range High range (Different from actual display) 2.2ch (3WAY) mode Low range speaker Mid range speaker High range speaker Cut-off frequency (1/3 octave steps) HPF LPF ---- 20 Hz 200 Hz 20 Hz - 20 Hz 200 Hz 20 kHz 1 kHz - 20 kHz, (20 Hz ~ ---- 20 kHz)* Slope Level HPF LPF ---- FLAT, 6, 12, 18, 24 dB/oct. 0 to -12 dB FLAT, 6, 12, 18, 24 dB/oct. FLAT, 6, 12, 18, 24 dB/oct. 0 to -12 dB FLAT* 6, 12, 18, 24 dB/oct. ---- 0 to -12 dB * Only when selecting User's in "Setting the Response Slope for the High Range Speaker (TW SETUP)" (page 51). Low range Mid range High range (Different from actual display) 55-EN