Peavey V4X - Page 3

NO
REAR PANEL
‘System Input (XLR) (M)
An
electronically
balanced
input
(pin
3
positive)
which
can
handle
up
to
+24
dBV
(16V
RMS).
System
Input (%")
(N)
This
is
a
"stereo",
three
connector
type
jack
(ring,
tip,
sleeve)
allowing
the
input
to
be
"balanced"
when
used
with
a
three
connector
type
(ring,
tip,
sleeve)
plug.
The
"tip" is the
positive
input.
When
a
standard
two
conductor
phone
plug
is
inserted
into
this
jack,
the
system
becomes
unbalanced.
Such
connection
should
be
made
only
when
the
associated
equipment
is
in
close
proximity
to
the
V4X.
Operation Note
The
XLR
input
and
%”
input
are
in
parallel,
If
a
two
conductor
phone
plug
is
used
in
the
%”
jack,
both
inputs
become
unbalanced,
If
a
three
conductor
phone
plug
is
used
to
patch
to
associated
equipment
which
is
unblanced,
the
entire
input
system
becomes
unbalanced.
Bandpass Outputs (XLR) (0,0,5,U)
Each
is
transformer
balanced
(pin
3
positive)
to
allow
quiet
operation
even
with
long
multi-conductor
snake
cables.
Bandpass
Outputs
('/'')
(P,R,T,V)
Unbalanced
outputs
to
be
used
when
the
associated
power
amplifiers
are
located
near
the
V4X
and
share
the
same
AG
"mains"
supply.
These
and
all
other
signal
grounds
are
isolated
from
chassis
ground
to
minimize
the
possibility
of
ground
loop
hum.
Operation Note
These
jacks
may
be
used
simultaneously
with
the
XLR
jacks
without
unbalancing
the
XLR
outputs.
Line
Cord
(W)
For
your
safety,
we
have
incorporated
a
3-wire
line
(mains)
cable
on
the
back
of
the
chassis
with
proper
grounding
facilities.
It
is
not
advisable
to
remove
the
ground
pin
under
any
circumstances.
If
it
is
necessary
to
use
the
equipment
without
proper
grounding
facilities,
suitable
grounding
adapters
should
be
used.
Less
noise
and
greatly
reduced
shock
hazard
exists
when
the
unit
is
operated
with
the
proper
grounded
receptacles,
NOTE:
The
above
statement
in
reference
to
removing
the
ground
pin
is
applicable
only
to
120
volt model
products
Set
Up
Procedure
To
achieve
proper
system
set
up
and
to
provide
good
system
performance
and
reliability,
all
the
system
component
efficiency
ratings
and
crossover
frequency
values
must
be
determined
and
used
in
the
following
procedure.
Step
1:
Theefficiency
rating
of
the
low
frequency
enclosure
becomes
the
"reference
efficiency"
tor
the
entire
system.
The
level
control
associated
with
this
bandpass
should
always
be
set
at
0
dB.
For
two-way
systems
this
will
be
the
Mid
level
(F)
and
for
three
and
four-way
systems
this
will be
the
Low
Level
(E).
Example:
A
system's
low
frequency
component
has
an
efficiency
rating
of
110
dB
at
1W,
1M.
110
dB
is
the
“reference
efficiency"
for
setup.
Step
2:
For
three
and
four-way
systems
the
Mid
Level
(Е)
setting
will
be
the
difference
in
efficiency
rating
between
the
low
and
mid
components.
Example:
The
system's
mid
frequency
component
efficiency
is
109
dB
at
1W,
1M.
110-
109
=
+1
dB.
The
Mid
Level
setting
should
be
+1 dB.
Step
3:
The
High
Level
(G)
setting
will
be
the
difference
in
efficiency
rating
between
the
low
and
high
components
Example:
The
system's
high
frequency
component
efficiency
is
115
dB
at
1W,
1M.
110
-
115
=-5
dB.
The
High
Level
setting
should
be
-5
dB.
Step
4:
In
4
way
systems
only,
the
Very
High
Level
(H)
setting
will
be
the
difference
in
efficiency
rating
between
the
low
and
very
high
components.
Example:
The
very
high
frequency
component
efficiency
is
108
dB
at
1W,
1M.
110
-
108
=
+2
dB.
The
Very High
Level
setting
should
be
+2 dB.
Step
5:
The
crossover
frequency
adjustments
must
be
correct
for
the
various
components
in
the
system.
These
values
are
usually
the
cut
off
frequencies
of
the
associated
components,
but
not
necessarily.
Crossover
frequencies
are
sometimes
selected
to
improve
the
"power
sharing”
for
a
given
sound
system
application.
These
selections
should
never
be
below
the
culoff
frequency
values
Step
6:
For
three
and
four-way
systems
the
40
Hz
filter
(J)
may
be
activated
if
desired,
This
feature
protects
sub-wooters
from
operating
below
cutoff
and
preserves
headroom.
Step
7:
For
four-way
systems
the
20
kHz
filter
(К)
may
be
activated
if
desired,
It
is
recommended
for
use
with
any
system.
Step
8:
Activate
the
HF
EQ
(I)
if
required.
(See
High
Frequency
Equalization
section.)
Step
9:
Adjust
the
System
Gain
control
(A)
as
described
in
the
System
Gain
section
(page
2)