Blaupunkt 7 644 820 310 Subwoofer and Centre Speaker, Subwoofer and centre speaker

SUBWOOFER AND CENTRE SPEAKER

Subwoofer and centre speaker

You can connect a subwoofer and a centre speaker to this device.

In order to optimise the sound still fur- ther when using a subwoofer and cen- tre speaker, you can set a low-pass fil- ter for the subwoofer and a high-pass filter for the front and rear channels sep- arately.

Adjusting the subwoofer boost level (gain)

You can set a permanent volume boost/ reduction level between -6 and +6 for the connected subwoofer and therefore emphasise or tone down the subwoof- er’s bass reproduction. The setting that you should select depends on the in- stallation position and location of the subwoofer in your vehicle. If necessary, find out which setting you prefer by try- ing out the various settings.

➮Press the AUDIO button :. “AUDIO MENU” appears in the display.

➮Press the softkey 5 assigned to the “SUBOUT” display item.

➮Press the softkey 5 assigned to the “GAIN” display item.

➮Move the joystick 8 up/right to boost the gain or move it down/left to reduce the gain.

When you have finished making your changes,

➮press the joystick OK 8 or the AUDIO button :.

Adjusting the subwoofer phase

You can adjust the phase of the sub- woofer output to suit your subwoofer. The phase setting can be adjusted in steps of “45°” to between “-135°” and “180°”.

➮Press the AUDIO button :. “AUDIO MENU” appears in the display.

➮Press the softkey 5 assigned to the “SUBOUT” display item.

➮Press the softkey 5 assigned to the “PHASE” display item.

➮Move the joystick 8 to switch be- tween the available settings.

When you have finished making your changes,

➮press the joystick OK 8 or the AUDIO button :.

Setting up the low-pass filter

You can use the low-pass filter to set a frequency up to which the subwoofer will work. All the signals above the set frequency will be “cut off” and not sent to the subwoofer.

You can choose between the following frequencies: “40 Hz”, “50 Hz”, “63 Hz” and “100 Hz”. If your subwoofer is fitted with a built-in low-pass filter, you can also select the “FLAT” setting and thus allow all the frequencies to be sent to the subwoofer.

You should adjust this setting to suit the frequency range and capabilities of your subwoofer. For further information, please read the subwoofer’s documen- tation.

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