Niles Audio SI-1260 manual Bridging Two Channels into One, Installation, Step, Description

Models: SI-1260

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Bridging Two Channels into One

INSTALLATION

Bridging Two Channels into One

The SI-1260's bridging switches allow you to create a more powerful amplifier chan- nel by combining or "bridging" two adjacent amplifier channels together into one.

Figure 16

 

Figure 17

Channel Bridging Switch and DIP Switches

 

Bridged Channel Connections

 

 

 

 

 

 

 

 

 

 

 

 

 

 

When two channels are bridged

 

 

 

 

 

 

 

 

 

 

 

 

Slide the bridg-

 

 

 

 

 

 

 

 

 

 

 

 

ing switch in the

together, connect speakers to the

 

 

 

 

 

 

 

 

 

 

 

 

direction of the

two terminals labeled “Bridged”.

 

 

 

 

 

 

 

 

 

 

 

 

arrow to bridge

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

two adjacent

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

amplifier chan-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nels. Set the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

controls of the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

newly bridged

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

pair by using the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EVEN numbered

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

channel.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

STEP

DESCRIPTION

1. Choose which of the six pairs you

The 12 channels are grouped into 6 pairs

wish to bridge and move the bridging

(e.g. 1 & 2). Only the two channels within a

switch for that pair to the "Bridged"

pair can be bridged. Thus, only channels 1

position (toward arrow).

and 2, or channels 3 and 4 could be

 

 

 

 

 

 

 

 

 

 

 

 

 

bridged. Channel 2 and 3 are not a pair and

 

 

 

 

 

 

 

 

 

 

 

 

 

cannot be bridged.

 

 

CAUTION! DO NOT CONNECT A

Each bridged channel is designed for a 4

SPEAKER LOAD OF LESS THAN 4

ohm minimum load. Connecting multiple

OHMS TO A BRIDGED CHANNEL.

speakers to a single channel, creating a

 

 

 

 

 

 

 

 

 

 

 

 

 

nominal impedance of less than 4 ohms

 

 

 

 

 

 

 

 

 

 

 

 

 

may cause the SI-1260 to go into protection

 

 

 

 

 

 

 

 

 

 

 

 

 

mode or be damaged.

 

 

2. Connect the speaker wires to the

Connect the speaker wires to the two adja-

two bridged speaker terminals

cent amplifier channel's RED terminals only.

(BRIDGED+, BRIDGED-). Carefully

NOTE: If one of the speaker wires touches a

observe the polarity markings.

BLACK terminal, you will short-circuit the

 

 

 

 

 

 

 

 

 

 

 

 

 

amplifier.

 

 

 

 

 

 

 

 

 

 

 

 

CAUTION! DO NOT CONNECT A

 

 

 

 

 

 

HEADPHONE JUNCTION BOX TO THE

These connections to a bridged channel

OUTPUT OF A BRIDGED CHANNEL

pair will cause either thermal shutdown

PAIR.

or poor quality sound.

 

 

3. Use the EVEN NUMBERED BusMatrix

When two channels are bridged into one,

switch bank and level control for the

ensure that the odd numbered DIP

adjustments and configuration of a

switches are all in the "OFF" position.

bridged channel.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Niles Audio SI-1260 manual Bridging Two Channels into One, Installation, Step, Description