V12/2009
EU Decleration of Conformity
SA20, SA40, SA70, SA100
Please check before using
- Power supply
The AC line voltage must be in ac-
cordance with the following:
Voltage: ~230V±10%
Frequency: 50Hz/60Hz
- Mode selection
The dip switches (located on the rear
panel) confi gure the amplifi er for eit-
her stereo, parallel or bridged mono
mode. Factory default setting is Ste-
reo Mode.
Stereo mode
In Stereo Mode, both channels ope-
rate independently, with their input
attenuators controlling their respec-
tive levels. Signal at channels A´s
input produces output at channel A´s
output, while signal at channel B pro-
duces output at channel B´s output.
Recommended minimum nominal
load impedance for stereo operation
is 4 ohms per channel.
Parallel mode
When set to Parallel Mode, a signal
applied to A´s input will be amplifi ed
and appear at both channels outputs.
Only channel A input may be used.
Bridged mono mode
Bridged mono mode straps both am-
plifi er channels together to make a
very powerful, single - channel amp.
One channel “pushes“ and the other
“pulls“ equally, doubling the power.
Signal is applied to the Channel A
input only. Signal level is determined
by CH A level control.
Operating instructions
- Clean or replace dust fi lter
From time to time or after using this
unit in dusty environments the
dust fi lter of the amplifi er should be
cleaned or replaced. To take off the
front panel, remove the
corresponding Phillips-head screws.
Take out the fi lter foam, clean or re-
place it and assemble the front
panel again.
Clean the fi lter foam with warm wa-
ter and a little bit of rinsing agent.
Take care to dry the the foam
completely before reassembling it.
