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Напольная Акустическая Система
ElectroMotion ESL X
Руководство пользователя Страница: 8

MartinLogan ElectroMotion ESL X Руководство пользователя онлайн [8/60] 170123

This method takes the bi-wiring concept one step

further. You will have a dedicated channel of

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 method 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

recommend that you use two identical amplifiers

(i.e. same brand and model). If you must use two

different 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 character-

istics. If the amplifiers of choice do not have the

same gain characteristics, then a sonic imbalance

will occur. With horizontal bi-amping, one ampli-

fier drives the high-frequency section of the speaker

while the second amplifier drives the low-frequency

section. To horizontally bi-amp your speakers you

must loosen 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. 4).

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

Fig. 4: Horizontal bi-amplification connection.

One channel shown.

Fig. 5: Vertical bi-amplification connection.

One channel shown.

MartinLogan ElectroMotion ESL X Руководство пользователя онлайн [8/60] 170123

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