You can use mono mode to drive two speakers with one input signal while keeping independent
control of both channel-gains filtering and limiting.
Bridge Mode
When tho mode switch is set to bridge the amplifier operates in bridge. Bridge mode combines
the power of channel A and B. In this setting both channels operate as one. The result is twice
the output Voltage, four times the peak power and three times the sustained power of a single
channel.
Use bridge mono mode to deliver the power of both channels to a single load (4 -16 Ohm).
This setting uses the input, controls and settings of channel A, channel B is not used.
Precautions :
Bridge mode makes it possible to drive thousands of watts into a single speaker. AC current
consumption will be higher, too. Avoid excessive signal level and make sure that the wiring and
speaker can handle the power.
Excessive clipping may cause protective muting – speaker will not be driven for a few seconds.
Do not use 2-ohms loads ( nor 4-ohms in case of S1504 amplifier ).
Installation and Dimensions
ATTENTION !!
To avoid the risk of fire or electric shock :
Do not open the amplifier – all user-servicable parts are external - refer servicing to qualified
personnel !
If replacing the fuse use only the same type and rating!
Do not expose the amplifier to rain or moisture !
This manual contains important information for correct and safe use. Read it carefully before
using the amplifier. Keep it for future consultation.
Connection to the mains supply
Before connecting the amplifier to the mains socket always make sure that:
- The electric system and mains socket have an adequate grounding – compatible with
the safety norm (If you are uncertain consult specialized personnel);
- The mains voltage corresponds to that shown on the rear panel ( accepted allowance is
up to +/-10%);
- Power cord is not damaged
- The on/off switch is in the off position.
Switching on and off
In your sound reinforcement system always switch on the amplifier after all the other equipments
and always switch it off before them, if possible with gain controls set at minimum – this will
avoid dangerous signal peaks.
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