Front Panel: Names Of Components & Their Usage - Toa KD-1 Operating Instructions Manual

Front Panel
Low Equalizer Control [LOW]
The low EQ control alters the low
frequency response of the input
channel, providing ±15dB at
20Hz of continuously variable ac-
tive shelving equalization. The
"0" detented position provides
flat audio response.
High Equalizer Control [HIGH]
The high EQ control alters the
high frequency response of the
input channel, providing ±15dB
at 20kHz of continuously variable
active shelving equalization. The
"0" detented position provides
flat audio response.
Input Channel Level
[LEVEL]
The level control provides con-
tinuously variable adjustment of
the channel output to the mixing
busses, thus determining the
level of the channel in the main
sound system mix. The nominal
level of the input level control is
at the "0" dB position.
Cross-fade Control for Reverb
and Effect [REV/EFF X-FD]
When this control is in the center
position, the Reverb signal (thus
the internal reverberation unit)
and EFF RET signals are equally
assigned to the System mixing
buss. Rotating the control
counter-clockwise decreases the
EFF RET signal level, keeping the
original level of the Reverb Sig-
nal. Rotating the control clock-
wise decreases the Reverb signal
level, keeping the original level of
the EFF RET signal.
System Level Control [SYSTEM
LEVEL]
This control determines the over-
all volume level of the KD-1 sys-
tem.
Headphone Jack [PHONES]
The headphone jack will accept
any stereo headphone with 8
ohms impedance, or higher. This
jack provides the same signal as
the speaker output. When a plug
is inserted into the jack, the
speaker output is automatically
switched off.
3
Reverb/Effect Level Control
[REV/EFF LEVEL]
This control governs the amount
of reverb signal through the rever-
beration unit (built in), and effect
signal returned through the effect
return jack (EFF RET) to the sys-
tem mixing buss. The singal of
Reverb signal and EFF RET is
controlled simultaneously.
Power/Protect LED Indicator
[POWER/PROTECT]
The LED indicator lights green
when the power switch is "on".
The LED turns red when the
thermal protection circuit is acti-
vated, or the internal fuse (for
overload protection) is opened.
Power Amp Compression
Indicator [COMP]
The Comp LED lights when the
internal compressor is activated.
The compressor is provided to
protect the speaker system by
compressing the input signal
level of the power amplifier when
clipping occurs in the output
stage. Frequent flashing of the
LED is not reason for alarm.
However, a constant or steady
light indicates that the KD-1 is
being overdriven and that the
internal power amplifier is poss-
ibly "under powered" for that
application. The output level of
the KD-1 should be decreased
until the LED only flashes inter-
mittently.