Operation; Front Panel - Yamaha P2040 Operation Manual

OPERATION
FRONT PANEL
YAMAHA
POWER AMPLIFIER P2040
@ POWER Switch & Indicator
Press the power switch in to turn power ON, and press
again to turn the power OFF. The POWER LED immedi-
ately above the power switch will light when the power is
ON.
— CAUTION! —————
The power amplifier should be the LAST piece of equip-
ment turned on in any system. This is to avoid damage
to the power amplifier and speakers due to power-surge
"thumps" generated by turning on other equipment.
The only exception to this rule is when the entire system
is switched on simultaneously through a master power
switch.
Ө CLIP Indicators
Independent CLIP indicators are provided for channels A,
B, C and D. They light when the output level of the cor-
responding channel reaches or exceeds clipping level: 27.2
dB (40 W/8 ohms) in the 2-channel mode, or 24.2 dB
(20 W/8 ohms) in the 4-channel mode. Should any of the
CLIP indicators light during amplifier operation — indicat-
ing clipping due to excessive signal levels — the input
signal level should be decreased either at the source or by
using the P2040 input attenuators. - |
Ө Input Attenuators
Independent input attenuators are provided for channels
A, B, C and D. Rotated fully clockwise there is no attenu-
ation, and thus maximum signal level. The maximum
counter-clockwise
setting
provides
infinity attenuation
(i.e. channel OFF).
Ө 4CH MODE indicator
This indicator lights when the rear-panel 2CH/4CH switch
is set to the 4CH position, setting the P2040 to the 4-
channel mode.