DB Drive Speed Series Amplifier SPA SPA90.2 - Manual (Page 5)

7 8
S
IGNAL CONNECTIONS
Connect the RCA output of the head unit (AM/FM cassette player, CD, or DAT) to the RCA
input terminals of the amplifier.
To make these connections, we recommend high quality RCA cables, which are available
at your local car audio retailer. Run signal wires away from electrical wires to avoid possibil-
ity of induced noise from the car’s electrical system (i.e. popping noises or engine noise).
S
PEAKER CONNECTIONS
IMPORTANT! The following speaker connection are for the amplifier in normal mono
configuration.
Make the speaker connections using speaker wire that is at least 16 gauge or heavier.
As with any audio component, proper phasing of the amplifier and speakers is essential for
strong bass response. When connecting, make sure that positive (+) from the amplifier is
connected to the positive (+) of the speaker, and the same for negative (-).
Please note that although the SPA1000D, SPA1300D , SPA1600D and SPA1900D are
mono amplifiers, we have provided two sets of speaker terminals on the amplifier. These
terminals are connected in paralleled internally (connected together). The second set of
speaker terminals are intended for ease of connection when running multiple woofers.
in out
level subsonic lpf
bass
boost
remote
L
R
min max 20Hz 50Hz 40Hz 130Hz 0dB 18dB
spa1300D
classD monoblock amplifier
spa90.2
classAB 2 channel amplifier
in out
level freq bass boost L
R
min max 60Hz 400Hz 0dB 18dB
x-over
low full high
94.7
L R
L R
94.7
bass
boost
input
level
freq
0dB 18dB
bass
boost
0dB 18dB 60Hz 400Hz
freq
60Hz 400Hz min max
input
level
min max
x-over
low full high
x-over
low full high
input
ch 1 ch 3
ch 2 ch 4
remote
spa150.4
classAB 4 channel amplifier
L R L R
94.7
Optional full range line out connection
to addition addition in the system.
Optional full range line out connection
to addition addition in the system.
MONO SIGNAL
CONNECTION
SIGNAL CONNECTION:
4 Channel Amplifier using
2 pair of RCA inputs.
SIGNAL CONNECTION:
2 CHANNEL AMPLIFIERS
speaker output
power fuses rem gnd +12v
protect
(-) ------ bridged ------ (+)
R (-) R (+) L (-) L (+)
+ -
+ -
speaker output
power fuses rem gnd +12v
protect
(-) ------ bridged ------ (+)
R (-) R (+) L (-) L (+)
+ -
4 Ohm Speaker
(1Ohm minimum)
4 Ohm Speaker
4 Ohm Speaker
2 Ohm Speaker (1 Ohm minimum)