HELIX B Five User Manual

14
fULLY
.•
ACTIVE
.
MODE
The
HELIX
B
FIVE
offers
many
different
options
for
operating
a
speaker
system
in
fully
active
mode.
This
means
that
each
speaker
is
connected
to
a
separate
channel
and
no
passive
crossovers
are
used.
A
2-way
speaker
system,
consisting
of
two
tweeters
and
two
woofers
each,
and
one
subwoofer
is
the
typical
choice
for
this
operating
mode.
The
ideally
coordinated
HELIX
blue
speaker
systems,
such
as
the
,HELIX
B
62C"
(2-way
component
system)
and
the
,HELIX
B
12E"
30-cm
subwoofer
in
a
closed
box),
are
perfectly
suited
to
this
use.
Connecting
the
speakers:
Each
speaker
is
connected
directly
to
a
separate
channel
on
the
power
amplifier
without
the
use
of
any
passive
crossovers.
The
speakers
should
be
connected
as
follows:
-
In
fully
active
mode,
the
tweeters
(of
the
,B
62C")
are
directly
connected
to
speaker
outputs
1
(,CH
1
")
and
2
(,CH
2")
on
the
amplifier.
-
The
woofers
(of
the
,B
62C")
are
connected
to
speaker
outputs
3
(,CH
3")
and
4
(,CH
4").
-
The
subwoofer
(,B
12E")
is
connected
to
the
5th
speaker
output
(,CH
5").
Signal
inputs:
There
are
a
number
of
different
connection
options
for
the
allocation
of
the
signal
inputs
in
fully
active
mode.
You
will
find
a
detailed
explanation
of
the
way
in
which
the
input
signal
switch
(9)
works
on
Page
4.
The
GAIN
control
knob
is
used
to
adjust
the
volume
of
the
individual
speaker
outputs.
-
2-channel
mode:
In
this
case,
only
the
cinch
or
high-
level
signal
inputs
from
Channel
1
{,CH
1
")
and
2
(,CH
2")
are
supplied
with
the
signal.
The
input
signal
switch
is
set
to
,2-CH".
-
4-channel
mode:
In
this
case,
the
cinch
or
high-level
signal
inputs
from
channels
1
to
4
are
supplied
with
the
signal.
For
this
option,
the
corresponding
input
signal
is
allocated
to
each
speaker
output;
the
subwoofer
output
is
supplied
with
the
sum
of
all
the
input
signals.
The
input
signal
switch
is
set
to
,4-CH".
-
5-channel
mode:
In
this
case,
all
five
cinch
inputs
on
the
amplifier
are
supplied
with
the
signal
and
the
signal
is
then
allocated
to
the
corresponding
speaker.
When
using
the
high-level
signal
input,
we
recommend
using
the
4-channel
mode.
The
input
signal
switch
is
set
to
,5-CH"
.
Crossover:
It
is
particularly
important
to
set
the
internal
crossover
correctly.
If
not,
the
speakers
connected
might
be
damaged
as
a
result.
-
Channel
1
and
2:
For
these
channels,
a
highpass
filter
(,HPF")
must
be
set
in
the
internal
crossover
(switch
12).
The
cut-off
frequency
is
usually
between
2
kHz
and
4
kHz.
For
our
example
system,
the
B
62C,
this
value
should
be
set
at
approx.
3
kHz.
-
Channel
3
and
4:
For
these
channels,
a
bandpass
must
be
activated
in
the
internal
crossover.
To
do
so,
set
the
lowpass
filter
{,LPF")
(switch
16),
which
automatically
forms
a
bandpass.
The
frequency
of
the
lowpass
filter
(18)
should
be
set
to
the
same
frequency
as
the
highpass
frequency
for
Channel
1
and
2,
i.e.
approx.
3
kHz.
After
that,
another
highpass
frequency
(17)
is
set
to
configure
a
bandpass.
For
our
system,
the
value
should
lie
somewhere
between
70
Hz
and
90
Hz.
Bass
Boost
is
not
used
in
the
fully
active
mode.
-
Channel
5:
The
low
pass
is
always
active
for
this
subwoofer
channel.
The
lowpass
filter
(19)
should
be
set
to
the
same
frequency
as
the
highpass
filter
for
Channels
3
and
4,
i.e.
between
70
Hz
and
90
Hz.
In
addition,
the
intensity
of
the
woofer
reproduction
can
be
increased
for
this
channel
by
adjusting
the
Bass-Boost
control
knob
(20).

HELIX B Five Specifications

General

Brand	HELIX
Model	B Five
Category	Amplifier
Language	English