User`s manual
amplification directly connected to the high-
and
low-frequency sections of
the
crossover. There are
two different methods for bi-amping with two stereo
amplifiers.
The
first and most common
is
referred
to
as
Horizontal Bi-amping.
The
second method
is
referred
to
as
Vertical Bi-amping.
With
either
meth-
od you may
use
two
stereo amplifiers or four mono
amplifiers, or
two
mono amplifiers and one stereo
amplifier.
Get
the
idea?
With
either
form
of passive
bi-amplification, your preamplifier
must
have dual
outputs.
If
your preamplifier
is
not
so
equipped, you
must
either purchase or construct a
"Y"
adapter.
Horizontal Passive Bi-Amplification
Horizontal bi-amping allows you to
use
two
differ-
ent types, models or brands
of
amplifiers (i.e. tubes
on top, transistor on
the
bottom). However,
we
rec-
ommend that you
use
two identical amplifiers (i.e.
same brand and model).
If
you
must
use
two differ-
ent amplifiers,
it
is
essential that they have
the
same
gain
or that one
of
the
two
have adjustable
gain
so
that you can match their gain characteristics.
If
the
amplifiers
of
choice
do
not have
the
same gain
characteristics, then a sonic imbalance will occur.
With
horizontal bi-amping, one amplifier drives
the
high-frequency section of
the
speaker while
the
sec-
ond amplifier drives the low-frequency section.
To
horizontally bi-amp your speakers you
must
loosen
the
binding
posts
and
remove the jumper clips.
AssEMBLY
AND
PLACEMENT
BREAK
IN
Allow
approximately
72
hours
of
break-in at
90
dB (moderate listening levels) before
any
critical
listening.
PLACEMENT
Connect
the low-frequency amplifier to the
lower
set
of
binding posts of both speakers. Connect the
high-frequency amplifier
to
the
upper
set
of
binding
posts. Next, connect
the
left and right preamplifier
outputs to the
appropriate
left
and
right inputs
of
both amplifiers
(Fig.
3).
Vertical Passive Bi-Amplification
The
very nature
of
vertical bi-amping dictates that
both amplifiers be identical.
With
vertical bi-amp-
ing, each
of
the
s.tereo
amplifiers
is
dedicated
to
one speaker.
For
instance,
the
left channel
of
each
amplifier drives
the
low-frequency section while
the
right channel drives the high-frequency section.
To
vertically bi-amp your speakers you
must
loosen
the
binding
posts
and
remove the jumper clips from
both speakers. Starting with one speaker, connect
the right channel to the
lower
binding
posts
and
the
left channel to
the
upper binding posts. Repeat
the
same procedure for
the
other speaker. Connect
the
left preamplifier outputs to both inputs
of
the
left
channel amplifier and
the
right preamplifier outputs
to
both inputs of
the
right channel amplifier
(Fig.
4).
ACTIVE
BI-AMPLIFICATION
We
do
not recommend active bi-amplification.
The
internal crossover can not be bypassed.
This
con-
nection method seriously degrades performance.
wall, you may notice improved imaging and detail
if you are
able
to
place
the speakers {measured
from the tweeter
and
woofers) 2-3 feet from the
front
wall
and 2 or more feet from the side walls
(Fig. 5).
Although your speakers are designed
to
deliver a TOE-IN
superb sonic performance when placed close to a To
achieve
superior stereo
imaging
we
recom-
6