Alpine INE-W970HD Owners Manual - Page 70

Setting the Crossover (X-Over) ■■ About the Crossover 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. • Adjustment should be made according to the recommended crossover frequency of the connected speakers. Determine the recommended crossover frequency of the speakers. Adjusting to a frequency range outside that recommended may cause damage to the speakers. For the recommended crossover frequencies of Alpine speakers, refer to the respective Owner's Manual. We are not responsible for damage or malfunction of speakers caused by using the crossover outside the recommended value. 1. In the Setup screen, touch [X-Over]. 2. Touch [Channel[ to select the channel. Each time you touch, the channel switches. Cut-off frequency (1/3 octave steps) Slope Level HPF LPF HPF LPF Subwoofer (LPF) ---- 20 Hz 200 Hz ---- 0, 6, 12, 18, 24 dB/oct. 0 to -12 dB Rear speaker 20 Hz - (HPF) 200 Hz ---- 0, 6, 12, 18, 24 dB/oct. ---- 0 to -12 dB Front speaker 20 Hz - (HPF) 200 Hz ---- 0, 6, 12, 18, 24 dB/oct. ---- 0 to -12 dB Low range Slope adjusting Output frequency range Slope Subwoofer FLAT Level adjusting (0 to -12 dB) High range Output frequency range Rear speaker Front speaker 20 Hz (Different from actual display) LPF cut-off frequency HPF cut-off frequency 200 Hz • HPF (high pass filter): Cuts the lower frequencies and allows the higher frequencies to pass. • LPF (low pass filter): Cuts the higher frequencies and allows the lower frequencies to pass. • Slope: The level change (in dB) for a frequency change of one octave. • The higher the slope value, the steeper the slope becomes. • Adjust the slope to FLAT to bypass the HP or LP filters. • Do not use a tweeter without the HPF set on, with a high cut-off frequency, otherwise damage may occur to the speaker due to the low frequency content. • The channel being adjusted is displayed in red. Front HPF → Rear HPF → Subw. LPF → Front HPF 3. Adjust the crossover to your preference. Selecting the Cut-Off Frequency Touch or of "Frequency," and then select the cut-off frequency. (20 / 25 / 31.5 / 40 / 50 / 63 / 80 (Initial setting) / 100 / 125 / 160 / 200) Adjusting the Slope Touch or of "Slope," and then adjust the HPF or LPF slope. (0 (Initial setting) / 6 / 12 / 18 / 24 dB/oct.) Adjusting the Level Touch [+] or [-] of "Level," and then adjust the HPF or LPF level. (-12 to 0 dB (Initial setting: 0)) 4. Repeat steps 1 to 2 to make adjustment to the other channels. 5. To store the adjusted setting value, touch and hold [Preset 1], [Preset 2], or [Preset 3] for at least 2 seconds. • Touch [Flat] to initialise all values. • If the Subwoofer setting is "Off," the Subwoofer setting cannot be edited. • While adjusting the X-OVER you should consider the frequency response of the connected speakers. Calling the X-OVER adjusted value Calling the pre-set X-OVER adjusted value. Touch [Preset 1], [Preset 2], or [Preset 3] on the X-OVER screen. The setting stored in the Preset will be recalled. 70-EN