Blaupunkt RD 148 Assistance in setting your equaliser, Lower mid-range, Mid-range sound, Treble

Assistance in setting your equaliser

Start to make your settings in the mid-range/treble and end it with the bass range.

Frequency range	Sound impression / Problem	What to do
Bass
30 – 100 Hz	Bass reproduction too weak	Boost the basses with
		the “LOW EQ” filter
		Frequency: 50 to 100 Hz
		Level: +4 to +6 dB
Lower mid-range
100 – 400 Hz	Unclear bass	Reduce the lower mid-range
	Playback reverberates	with the “LOW EQ” filter
	Unpleasant pressure	Frequency: 125 to 400 Hz
	on the ears	Level: approx. -4 dB
Mid-range sound
400 – 4 000 Hz	Sound appears to be too	Reduce the mid-range with
	much in the foreground,	“HIGH EQ” filter
	very aggressive, no stereo effect	Frequency: 1 000 to 2 500 Hz
		Level: -4 to -6 dB
Treble
4 000 – 20 000 Hz	Lifeless reproduction	Boost treble range with
	Lack of transparency	“HIGH EQ” filter
	Instruments do not sparkle	Frequency: approx. 10 kHz
		Level: +2 to +4 dB

Notes

Avoid distortion.

Boost the level carefully if the speaker diameter is too small.

The tone may become too lean and aggressive.

Pay attention to the underlying tone of the music

Playback should not be too quiet.

Tone too powerless.

Avoid a piercing type of tone. Strong hissing sound unpleas- ant.

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