Ground Link Switch; Multi-Function - Ecler MPA6-150 Manual De Instrucciones

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3.3. Ground Link switch

The "GND LINK" switch (48) purpose is to avoid ground loops caused when several
devices in the same amplification chain are connected to earth simultaneously. This switch
disconnects the electrical ground from the mechanical ground on the housing. In case of a ground
loop (humming noise) operate this switch or alternatively the corresponding switches on the other
devices connected to the chain.

3.4. Multi-function

Depending on the input switches on the MPA6-150 (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
located on the rear panel, four different amplification configurations can be achieved:
BRIDGE IN 5
STEREO
HP FILTER
OFF
BRIDGE
ON
IN 5+IN 6
CHANNEL 6
- Six mono amplifiers with following possibilities:
Six different mono inputs
One common mono input for all
One common stereo input for all
- Three stereo amplifiers with following possibilities:
Three different stereo inputs
One single stereo input for both
- Three bridged amplifiers with following possibilities:
Three different mono inputs
One common mono input
One common stereo input
- Combinations between mono, stereo and bridged amplifiers
On the rear panel you can also activate the high-pass and low-pass filters:
High-pass filter ON/OFF switch (27 (31)). The cut-off frequency lies at 160 Hz for
amplifiers 3 and 4 (5 and 6) simultaneously or when operating in bridged mode. This filter cuts out all
frequency components under 160 Hz and passes the rest, being specially suited for connecting the
mid-range and high frequency speakers.
6
BRIDGE IN 3
STEREO
IN 6
IN 5
LINK
LINK
BRIDGE
CH 4
CH 3
IN 3+IN 4
CHANNEL 5
CHANNEL 4
HP FILTER
OFF
IN 4
IN 3
ON
LINK
LINK
CH 2
CH 1
CHANNEL 3
BRIDGE IN 1
STEREO
LP FILTER
OFF
IN 2
BRIDGE
ON
LINK
IN 1+IN 2
CH 1
CHANNEL 2
CHANNEL 1
IN 1
IN 1+
IN 2

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