Instruction manual

that the Loudspeaker leads are not short circuit before contacting the Factory for

advice.

For normal stereo operation, the switch on the rear panel should be in the “stereo”

position and the input signal is fed into either the pair of phono sockets or the pair of

adjacent XLR sockets. When the amplifier is used as a monoblock, the switch is

moved to the “bridge” position and the upper “left” phono socket (or the left XLR

socket) is used for the input. The two red speaker terminals are used to connect to the

loudspeaker, with the one nearest the input sockets (left channel) being “positive”.

As supplied, the amplifier electronics zero volt line is lifted from system (mains)

ground to prevent earth loops forming which cause an unpleasant constant hum to be

generated. If required, the electronic zero volt line can be connected to system ground

by changing the position of a jumper on the PCB (ask your dealer to do this for you or

you will invalidate the guarantee).

The sensitivity of the amplifier can also be varied with jumpers on the PCB. There are

3 levels of sensitivity, high, medium and low. The high or medium level is selected

when a passive preamp is used. The medium or low level is selected when a preamp

with gain is used. The choice will depend mainly on both the input level and the

efficiency of the speakers. The normal level when leaving the factory is the medium

setting (again, your dealer will change this setting for you if required). These settings

are elaborated in the section giving the amplifier specification.

Please Note: -

The SA400 is capable of VERY HIGH Power levels, as shown in the Specification.

The reason for this High Power capability is NOT to provide high Volume levels but

to obtain as high a dynamic range together with effortless Transient Power delivery.

If the SA400 is operated at high listening levels, costly damage to your Loudspeakers

will result, together with possible damage to your hearing.

It should also be noted that to achieve these High Power Levels hazardous voltages

will be present at the Output terminals. For this reason it is essential that the Terminal

Covers supplied with the Amplifier be fitted after connecting the Loudspeaker leads.