w¡th one stereo amplifìer;
then add
a second one ldter to quadruple
POWer
reseryes.
Three
or
four
individual
ampli-
fìers provide
evñro¡u
possibilitíes, since you
càn't¡3d ¿¡f-
ferent
brands and types.of amps
for HF
and
LF power.
Many
seri-
ous listeners
prefer
the
midrange
and treble sound quality
produced
by tube
amplifiers. Howeve¡
many
tube designs do not provide
as
"tþht"
a bass sound as solid
state
models
and often
produce
less
power3.
Bi-wiring with
separate
bass and treble amplifìers
allows
use of both tube and solid
state de-
signs, where each is most
desirable.
Whether
you
are using
two or
four amplifiers, it is important
to
use the same brand
and
power
rating to power like
connections
on the L7's.
ln facL
since the
cross-
over
point
for the L7's HF/LF
connections is
l50H¿
using
ampli-
fìers of the same power for
both
woofer
and
midbass/midrange/
treble connections is recom-
mended. For example,
in a
2-amplifier
bi-wire hook-up, if you
are using
a
200-watt Brand
X amp
for the leftLT,use a matching
200-
watt Br¿nd X amp for
the
rþht
L7.
Or if
you'r:e powering
the left
L7
low frequency connection
with a
1SO-watt BrandY amp and
the high
frequencies with a 1S0-watt Brand
3
Ztube amplifier;
use the same
types and
brands of amplifiers
for
respective
rþht speaker HF
and LF
connections.
Bi-wiring
connections
Drawings
L-G and L-H
show
two
bi-amplifìcation
options: dual
stereo amplÍfìer
and four-amplifier
modes.
IMPORÏANT
l.
The €xt€rnal
"strapping
bars"
which
normally connect
the
L7s'
HF and LF terminals
MUST
BE REMOVED
as shown in
Drawing
LJ (on the next page)
BEFORE
BI-WIRING
CONNECTIONSARE
MADE.
2. NEVER
CONNECTTWO
AMPLIFIER
CHANNELSTO
THE SAME LOUDSPEAKER
WITHOUT
FIRST
REMOVING
THE STRAPPING
BARS.
Operating
two amplifier
channels
with the L7 strapping
bars in place
can
seriously
damage
the amplifìers!
3. lf your preamplifier
has
just
one
set of stereo
outputs, you will
tns c not to oy ú,"ttfrey
cant There are some
*perb
ulbe
amplifiers
whió prwirle
wery bit as
mudr tþtnr-*as
solidslãte des¡gns
Howwer,
úey are high power
modeb and are very, VERY
epersive Moderåt€ly"riced
obe
porver
amplifurs
tend to be nndenæly powered
aswdL They midn
be accepable forpowerír6de
mldbesfmËrarrgd
reble
poni<rn
of tÍ-wired
L7s, hft\ rc'rild nor, in
o.¡r oFinitxr
be úæ bestdrcicefor
lo¡¿ bass
reproduaÍcn in abi-wired
sFternwhidt willb€
$þ
æ realt*íc concert tnll leveh
Drawing L-G
-Two
Amp Bi-Wire Detail
Hook-up is identicalfor
both L7
speakers
Drawing
L-H
-
Four-Amp
Hook-Up Detail
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