Listening In Pure A Mode - Kenwood RDX-VH7 Instruction Manual

24
Input level adjustment
The input levels of MD, TAPE and AUX can be
adjusted independently. This is intended to mini-
mize the difference between input levels from
different input sources when these are switched
over between them.
Possible when the MD (TAPE or AUX)
input is selected
1
Select the input source to be adjusted by
pressing the "input" key.
2
Press the "mode" key.
3
Rotate the "multi control" knob to select "MD
LEVEL SET ?" ("TAPE LEVEL SET ?" or "AUX
LEVEL SET ?"), then press the "enter" key.

Listening in Pure A mode

The Pure A mode is switched on/ off automatically
according to the current listening volume.
The Pure A mode allows you enjoy smooth and high
sound quality even when listening to the audio at
a close distance to the speakers or during low-level
listening in the night time, etc.
CAUTION
When pure A mode is selected, a certain amount of power is used even when no music source is played
back, and the temperature of the amplifier section will rise.
What is Pure A?
The amplifier section amplifies the voltage and current of the input signal from the CD etc. and sends the
output to the speakers. In order to suppress the distortion occurring with this amplification, amplifiers
with class A operation or class AB operation always have current flowing through the circuits for cur-
rent amplification. This is called the idling circuit. Especially an amplifier with class A operation has a
high idling current in comparison to an amplifier with class AB operation, which is used by many units.
As the result, class A operation has distortion suppressed to a minimum, and smooth playback with
high quality is possible. However, as a certain amount of power is consumed even when no music source
is played, the temperature of the amplifier section will become comparatively high. Thus a high-class
amplifier with a large-capacity power supply is required to enjoy the sound quality of class A operation.
The amplifier of this system usually functions as a class AB amplifier in normal mode. However, to allow
the user enjoy the high sound quality of class A amplifier, it has been designed to be switched automati-
cally between class A operation usable in low-level listening (Pure A) and class AB operation.
MDPPPLEVEL
BALANSETT?
Blinks
4
Adjust the input level by rotating the "multi
control" knob.
÷ The input level can be adjusted in the range from
–6 to +3.
5
Press the "enter" key.
÷ Once the input level of a source component is al-
tered, the recording level from the component
will also be altered.
MUTE
TRACK
N.B.I
PROG.1 2
PURE A
A.P.S.
TA NEWS
PURE A
PURE A
Hearing sound
RD-VH7/X-VH7 (EN)
multi control
mode
RD-VH7
enter
MDPINPUT
BALANSET+3
Pure A ON.
Pure A OFF.