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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 
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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
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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. 
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high-frequency section of the speaker while the sec-
ond amplifier drives the low-frequency section. To 
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the binding posts and remove the jumper clips. 
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 stereo 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 
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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.
BREAK IN
Allow approximately 72 hours of break-in at 90 
dB (moderate listening levels) before any critical 
listening.
PLACEMENT
Although your speakers are designed to deliver a 
superb sonic performance when placed close to a 
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).
TOE-IN
To achieve superior stereo imaging we recom-
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LACEMENT