Switching the Tuner Mode, 15-EN | Alpine CDA-7990 specification

Switching the Tuner Mode

The CDA-7990 incorporates the MAX TUNE SQ for the highest quality tuner audio. Moreover, you can choose between two settings to suit your own personal sound preferences and usage.

1 Press and hold the SETUP button for at least 3 seconds.

2 Press the UP or DN button to select TUNER mode. Each press changes the modes as shown.

BASS/TRE REM CONT TUNER ILLUMI

MUTE AUX-IN D-OUT SUB-W SCROLL

3 Press the TUNE button to toggle the TUNER mode between NORMAL and Hi-Fi.

TUNER NORMAL TUNER Hi-Fi

NORMAL: Standard setting

Hi-Fi:

Sound quality priority setting

T UNER NO RMA L

4 When the setting is completed, press the SETUP button to return to the normal mode.

•If you press the DN button the display scrolls in reverse sequence.

•The initial setting at the factory is “TUNER NORMAL”.

•If you find the sound is very noisy while listening to the tuner in the Hi-Fi mode, we recom- mend you change to the NORMAL mode.

•How MaxTune SQ works its magic

There are a variety of reasons, so let’s get technical. 1) The FM section has an extraordinarily high 80dB signal-to-noise ratio, thanks to a new PLL (phase-locked loop) circuit with low jitter, and a new low-noise IF detection circuit. 2) Lower distortion (typically 0.08%, but always less than 0.1%) due to an improved demodulation coil. 3) High performance ceramic filter with automatic Wide/Narrow mode switching for greater selectivity, important in crowded reception areas. 4) Improved high-power input characteristics. 5) The AM section has new parts and circuitry that are more resistant to interference.

What all this adds up to is very simple: a tuner capable of delivering radio sound that doesn’t suffer in comparison with CD sound.