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EPX Series Power Amplifiers
User Manual
5
EPX 300, EPX 500 & EPX 800 front panel
EPX 300, EPX 500 & EPX 800 rear panel
Technical specifications
01 - Clip LEDs - These LEDs flash red to indicate when the
output of the amplifier has reached the maximum, and is
right on the edge of clipping. Clipping is bad for speakers
and should be avoided. It is okay if the LED blinks
occasionally. It means that the transient peaks of the
music are just hitting the full output of the amplifier.
02 - Gain control - These two knobs control the levels of
Channels 1 and 2. Usually, these controls are set all
the way up. You might turn them down slightly if you
have high-efficiency speakers. Also, you could use them
to control the level of line-level sources such as a CD
player connected directly to the amplifier without a
pre-amplifier or mixer. After you have set the levels
for the mixer (or other signal source), adjust the level
controls on the amplifier as the final adjustment to set
the overall volume for the system.
In stereo and mono mode, use both level controls to
control the levels going to each speaker.
03 - Power LED - This LED illuminates when the amplifier
is switched on
04 - Protect LED - If this LED is illuminated during operation,
one of the protection circuits is active. Please take the
amplifier out of operation and have it tested
05 - Power switch - Press this switch to start the operation
POWER
PROTECT
I
O
CLIP
CLIP
POWER
CH A
CH B
01
02
05
02
03
04
01
INPUTS
GROUNDLIFT
LIFT
GND
B
A
RIGHT
LEFT
POWER AMPLIFIER
240V~50Hz
Serial no.
CAUTION!
Remove the mains power before opening
the unit. No user serviceable parts inside,
refer to qualified service personnel.
Protect the unit against moisture and heat.
Operating temperature range 0-40°C.
This product is not intended for use
other than stated.
MAINS
T3.15 A
240V~50Hz
!
OUTPUTS
(4Ω min.)
01 - ¼” jack inputs - These inputs allow you to connect
¼”unbalanced jack plugs
02 - Phono inputs - These inputs allow you to connect
unbalanced phono plugs
03 - There are three ways of connecting your speakers:
Locking speaker connectors, ¼” jack or binding posts.
The connectors are wired in parallel. (e.g. Channel 1
binding post, jack and locking speaker connectors are in
parallel and the same for channel 2).
04 - Power cable socket - This is where you connect the
detachable power cable. Connect the other end to a
240V AC outlet.
05 - Ground lift switch - This switch allows the signal ground
or chassis ground to be separated in case of a ground
conflict. For the highest safety of the equipment, it is
recommended to keep the “ground lift switch” in the
GND position. In case of a ground conflict please set the
ground lift switch to GND LIFT.
02
01
01
04
03
05
