Alto Professional M5A - Manual (Page 6)

2 CHANNELS+SUBWOOFER
This is the best possible positioning for the Monitors and the subwoofer but
this set-up maybe not practical in your room. So, play some music with the
subwoofer in different positions. Usually, the only possible positioning is under
the table. Choose a sound material where there is a lot of low frequencies.
Some positions may create phase misalignment. If the subwoofer has a phase
switch, turn it on and listen to the difference. The bass response will increase
or decrease. Keep the switch in the position that gives you more bass. Once
you have taken care of phase problems adjust the sound level of the subwoofer
to get a good and smooth mix with the Monitors.
5.1 CHANNEL SURROUND SET-UP
You can keep front monitors and subwoofer in the same position described in
the above example. The surround (back) monitors should be positioned slightly
behind the listener's head forming an angle of about 90 with the main monitor
on the same side.
3. INSTALLATION
4
Subwoofer
Subwoofer