3 Pin IEC Mains Power lnlet The operating voltage is 240 VAC @ 50 Hz or I l0 VAC @ 60 Hz (special order). The AC
power voltage level is not extemally user adjustable but is factory pre-set. The inlet is equipped with an inbuilt AC fuse holder fitted
with a 6 amp fuse plus a spare found within the holder. Power consumption is 400VA. I Please ensure that the mains power
cord is disconnected before attempting to check or replace this fuse.
Direct Output Terminal Strip: These screw terminals allow access to the direct outputs of the amplifier. Reading from
left to right the terminals are-
. Low Impedance Common
. 4 Ohms
I Spare
r Constant Voltage Common
. 70 Volt Line
' 100 Volt Line
TWin DG fuse receptacles: Access the DC fuses is by tuming the cap half a tum counter-clockwise with a screwdriver.
The value of the fuses is 10 Amps slow blow. I Please ensure that the AC power switch is in the 'oI? position and that the
mains power cord is disconnected before attempting to check or replace this fuse.
Signal lnpUt SOCketS: Signal input to the ACM250P is via a 3 pin XLR socket and is rated at lOK Ohms and is active
balanced. The two sockets are provided for bridged in/out connection. Pin connections are Pin l:Earth. Pin 2=Active Positive (+).
Pin 3:Active Negative (-).
Gain COntfOl LeVel: A recessed (screwdriver adjustable) gain control is located on the back panel. Tuming the control
clockwise will increase the output of the ACM250P towards it's maximum output level while turning the control counter-clockwise
will decrease the output level. Adjust this control for the desired output level depending on the level of the input signal (from a mixer
or other signal source). The factory default setting for this control is such that a I volt input will give a 100 volt output.
Fuse Sizes
Mains 240 VAC: 6 Amperes Slow Blow
DC: Z x 10 Amperes Slow Blow
Notes
There are no user adjustable controls inside the amplifier so the cover should only be removed by qualified service personnel. In all
cases the mains power lead should be disconnected before the cover is removed.
