Alpine HDS-990 HDS-990 Owners Manual - Page 19

3-way frequency  3-way page Setting items: Treble/Mid High Pass/Mid Low Pass/Bass Setting content:Frequency/slope 2 After selecting the corresponding frequency division, turn the knob to select the target item, then short press the knob to select the target item to adjust, and enter the frequency division and slope .  adjustment page. Tweeter: 1k/1.2k/1.6k/2k/2.5k/3.2k/4k/5k(initial setting)/6.3k/8k/10k/12.5k/16k/20k (Hz) Adjust the slope Setting content: 6/12 (initial setting)/18/ 24/30/36/42/48 (dB/Oct.) or off.  When the subwoofer mode is turned off, the subwoofer cannot be adjusted.  The cut-off frequency setting value of the mid-woofer speaker cannot be higher than that of the mid- and tweeter speaker. Sound memory Select [Sound memory] from the sound setting page. Refer to step 1 of "Sound Settings" (page 11). Sound memory Dealer settings User settings  Sound settings storage page 3 Turn the encoder to the left to select [] operation. Adjust frequency 2-way frequency Setting content: Frequency:20/25/32/40/50/63/80(initial setting)/100/125/160/200（Hz） 3-way frequency Setting content: Woofer/Mid-range low-pass speaker*: 20/25/32/40/50/63/80/100/125/160/200/250/ 315/400/500 (initial setting)/630/800 (Hz) Mid-range high-pass speaker: 20/25/32/40/50/63/80/100/125/160/200/250/ 315/400/500/630/800/1k/ 1.2k/1.6k/2k/2.5k/3.2k/4k/5k (initial setting)/ 6.3k/8k/10k/12.5k/16k/20k (Hz) Setting content: Dealer settings/User settings Dealer Settings After purchasing and installing this product at the designated Alpine authorized dealer, professional technicians will debug and store the parameters related to the sound setting to the "Dealer settings" for you. 1 Turn the encoder to select "Dealer Settings", and then short press the encoder to recall the adjusted sound setting parameters. User Settings In addition to "Dealer settings", if you have 16 EN