Pioneer PRS-D1200M Setting the Gain properly, Gain Control of This Unit

Setting the Unit

Setting the Gain properly

•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. There is no need to decrease the volume of the head unit and too much output is controlled.

•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.

Gain Control of This Unit

Preout level: 4 V

Preout level: 6.5 V	Preout level: 2 V
	(Standard: 500 mV)

•The above illustration shows the gain set to

NORMAL.

Relationship between the gain of the amplifier and the output power of the head unit

Power		Power
	Normal gain			Maximum gain
		Equal power
Head unit volume steps			Head unit volume steps
	Amplifier gain			Amplifier gain
	(normal)			(maximum)

•If you raise the gain of the amplifier to an improp- er level, only distortion is increased and the power increases only slightly.

Signal waveform when outputting at high volume by the gain control of the amplifier

No rmal gai n			Maximum gai n
		we	r
Signal	Equal po
			Signal
wavefo rm			wavefo rm
Amplifier gai n			Amplifier gai n
(normal)			(maximum)

•With high output the signal waveform is distorted, if you raise the gain of the amplifier the power changes only slightly.

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