Philips CMQ205/00 user manual Use your power amplifier

4Use your power amplifier

Select filter mode

Select Filter Mode according to the connected speaker type.

1Slide FILTER MODE to the selected position.

•HPF (high-pass-filter): Select this mode when mid-range speakers and tweeters are connected for high frequency output.

•LPF (low-pass-filter): Select this mode when woofer and subwoofer are connected for low frequency output.

•OFF (flat): Select this mode when both tweeters and woofers are connected.

Select LPF frequency

When FILTER MODE is set at LPF position, you can select the range of frequency that is to be filtered.

Note

•When FILTER MODE is set at OFF or HPF position, LPF FREQUENCY does not work.

1 Slide LPF FREQUENCY to the selected position.

•80Hz: More high frequency signal is filtered. Select 80Hz if you prefer stronger bass effect.

•180Hz: Less high frequency signal is filtered.

Adjust input level

To ensure sound quality, adjust input level to	English
match it with the car audio’s output voltage.

1Check the line output voltage of the connected car audio.

2Rotate INPUT LEVEL to select a matched voltage: 0.3V to 6V.

Adjust bass boost

To enjoy more bass sound:

1Set FILTER MODE at OFF or LPF mode.

2Slide BASS BOOST to 12dB position.

Tip

•If BASS BOOST is set at 0dB position, no extra bass will be boosted.

Note

•If FILTER MODE is set at HPF mode, the bass frequency will be filtered.

About the protector indicator

The amplifier has a built-in protection circuit to protect the transistors and speakers in following conditions:

•The amplifier is overheated.

•A DC current is generated in speakers.

•The battery voltage is too low or too high. Or

•The speaker terminals are short circuited.

When the PROTECTED indicator lights up in red, the amplifier shuts down automatically. In this case please:

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