Pioneer PRS-D200 - Manual (Page 10)

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Additional information
• This unit is equipped with a protective function to prevent malfunction of the unit
itself and speakers from too much output, improper use or improper connection.
• When outputting sound at high volume etc., this function will cut off the sound output
in a few seconds. But this is not a malfunction. When you turn down the volume of
the head unit the sound output will be restored.
• If sound output is cut, the gain control of this unit may be improperly set. To ensure
continuous sound output at increased volume of the head unit, set the gain control
of the amplifier to a proper position according to the preout maximum output level of
the head unit (Fig. 1). There is no need to decrease the volume of the head unit and
too much output is controlled (Fig. 2, Fig. 3).
• If you decrease the volume of the head unit and set the gain control of the amplifier
to the proper position but still the sound cuts out from time to time, contact the
nearest authorized PIONEER Service Station.
Fig. 1 Gain control of this unit
Preout level: 6.5 V
Preout level: 2 V
(Standard: 500 mV)
Preout level: 4 V
Fig. 2 Relationship between the gain of the amplifier and the output power of the
head unit
Fig. 3 Signal waveform when outputting at high volume by the gain control of the
amplifier
Power Power
Equal power
Normal gain Maximum gain
Head unit volume steps Head unit volume steps
Amplifier gain
(normal)
Amplifier gain
(maximum)
If you raise the gain of the amplifier to an improper level, only distortion is increased
and the power increases only slightly.
Equal power
Normal gain Maximum gain
Signal
waveform
Amplifier gain
(normal)
Amplifier gain
(maximum)
With high output the signal waveform is distorted, if you raise the gain of the amplifier
the power changes only slightly.
Signal
waveform
MAN-PRS-D200-GB.fm Page 10 Monday, February 20, 2006 4:17 PM