Fig.4a Typical 4-channel amplifier low level input using RCA
NOTE:
The use of good quality RCA cables is just as important as power and speaker wire. Choose a high quality
low capacitance cable for best results.
XTA 4140
CH1
CH2
CH3
CH4
FRONT
L
R
REAR
LINE IN
CH 1/2
CH 3/4
LINE OUT
X-OVER
HPF
LPF
FULL
INPUT
MODE
CH2
CH4
HPF
LPF
FULL
MIN
MAX
GAIN
BASS EQ
HPF
0dB
18dB
80Hz
1.5kHz
MIN
MAX
0dB
18dB
80Hz
1.5kHz
40Hz 500Hz
LPF
40Hz 500Hz
CAR RADIO/
SOURCE
RCA
OUTPUTS
SPEAKER WIRING AND CONFIGURATIONS
Speaker Load
Keep in mind your PowerBass Autosound amplifier is a high power amplifier and not a high current amplifier.
In other words
this amplifier requires a minimum impedance of 2 ohms STEREO and 4 ohms bridged
MONO to operate trouble free.
Lower impedance will send the amplifier into protection and may possibly
damage the electronics inside.
Speaker Wiring
Choose the correct speaker wire for your application. Most applications will require a minimum of 16 gauge
wire. Route these using the same precautions as you did when you ran the power cable. Terminate these wires
at the speaker end using insulated speaker terminals (not supplied) or by soldering the connection. Make sure
the speaker connections are positive-to-positive and negative-to-negative. At the amplifier end, At the amplifier
end, it is very important that the wires are making solid contact. Strip the wires insulation back approximately
1/2 inch (12mm) and insert the wires into the appropriate openings. Check to make sure you’ve maintained
proper polarity and balance.
13