LPF FILTER
Crossover filter frequency control allowing the setting of the
lowpass cut-off frequency between 50 and 250 Hz.
Note: This control is not active when the LPF mode switch
is in the ''OFF'' position!
AMPLIFICATION MODE SWITCH
Depending on the selected switch setting the amplifier ope-
rates in Fullrange or Lowpass mode.
SUBSONIC FILTER
Crossover frequency control allowing the setting of the sub-
sonic cut-in frequency between 15 and 50 Hz.
INPUT GAIN
Input gain/sensitivity control allowing the matching of the
amplifier input section to the head-unit (pre-out)
output voltage.
d INPUT L+R
Low-level RCA signal input for connection to
head-unit pre-out.
q GROUND/GND
Power connection terminal to chassis ground or negative
terminal of car battery.
w REMOTE/REM
Remote switching contact for the automatic (remote)
toggle-on/off of the power amplifier from the head-unit's
remote lead.
e +12 V
Power connection terminal to positive terminal of
car battery.
r FUSE
Fuses for protection of the amplifier-internal electronics
against overload or faulty operation / wrong manipulation.
t +Speaker -
Speaker output terminals for one or two subwoofers.
The minimum load impedance is 2 ohms!
y POWER LED/PROTECT LED
Lit green when power is on. Lit red when amplifier is in
protect mode due to shorted speakers, overtemp. etc.
u REMOTE PORT
Input for RJ11 jack, for the external bass level
remote control.
B1
CONNECTIONS AND CONTROLS AXTON A1390