+15
To connect balanced lines to these inputs,Another way to consider
+10
use a 1�4" Tip-Ring-Sleeve (TRS) plug, the typeLOW CUTOs function is that it
+5
found on stereo headphones:actually adds flexibility during0
live performances. With the�5
RING SLEEVESLEEVE RING TIP
addition of LOW CUT, you can�10
�15
safely use LOW equalization on
TIP20Hz100Hz1kHz10kHz 20kHz
vocals. Many times, bassLow Cut with Low EQ
RING
TIPshelving EQ can really benefit
SLEEVEvoices. Trouble is, adding LOW EQ also boosts
stage rumble, mic handling clunks and breath
Tip = Positive (+ or hot)
pops. LOW CUT removes all those problems so
Ring = Negative (� or cold)
you can add low EQ without losing a woofer.
Sleeve = Shield or ground
HereOs what the combination of LOW EQ
To connect unbalanced lines to these
and LOW CUT looks like in terms of
inputs, use a 1�4" mono (TS) phone plug or
frequency curves.
standard instrument cable:
SLEEVESLEEVETIP TRIM (Channels 1�4)
TIPIf you havenOt already, please read the Level-
TIPSetting Procedure .
Tip = Signal
TRIM adjusts the input sensitivity of the mic
SLEEVE
Sleeve = Ground
and line inputs connected to channels 1
LINE IN inputs 1�4 are a good place to con-
through 4. This allows signals from the outside
nect older instruments that need more gain.
world to be adjusted to optimal internal oper-
You can correct weak levels by adjusting the
ating levels.
corresponding channelOs TRIM control .
If the signal originates through the XLR
jack, there will be 0dB of gain with the knob
LOW CUT (Channels 1�4)
fully down, ramping to 60dB of gain fully up.
The LOW CUT switch, often referred to as a
Through the 1�4" input, there is 15dB of
High Pass Filter (all depends on how you look
attenuation fully down and 45dB of gain fully
at it), cuts bass frequencies below 75Hz at a
up, with a OU� (unity gain) mark at 10:00. This
rate of 18dB per octave.
15dB of attenuation can be very handy when
We recommend that you use LOW CUT on
you are inserting a signal that is very hot, or
every microphone application except kick
when you want to add a lot of EQ gain, or both.
drum, bass guitar, bassy synth patches, or
Without this Ovirtual pad,� a scenario like that
recordings of earthquakes. These aside, there
might lead to channel clipping.
isnOt much down there that you want to hear,
and filtering it out makes the low stuff you do
want much more crisp and tasty. Not only that,
but LOW CUT can help reduce the possibility
of feedback in live situations and it helps to
conserve the amplifier power.
+15
+10
+5
0
�5
�10
�15
20Hz100Hz1kHz10kHz 20kHz
Low Cut
11 |
ACEC
