DB Drive SPA1900D Signal Connections, Speaker Connections, Mono Signal, Channel Amplifiers

SIGNAL 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).

in	out
	level	subsonic	lpf	bass
L				boost
R	min max	20Hz 50Hz	40Hz 130Hz	0dB 18dB remote

	spa1300D
classD monoblock amplifier
L R	MONO SIGNAL
to addition addition in the system.
Optional full range line out connection

94.7 CONNECTION

in	out	x-over
L	level	freq	bass boost
		low full high
R	min max	60Hz 400Hz	0dB 18dB

				spa90.2
				classAB 2 channel amplifier
L	R
			Optional full range line out connection
94.7			to addition addition in the system. SIGNAL CONNECTION:
				2 CHANNEL AMPLIFIERS
		input		remote
		ch 1	ch 3
	x-over			x-over
	low full high		low full high
0dB 18dB 60Hz 400Hz		min max	min max	60Hz 400Hz 0dB 18dB
bass	freq	input	input	freq bass
boost		level	level	boost
		ch 2	ch 4	spa150.4
				classAB 4 channel amplifier
		L R	L R
		94.7		SIGNAL CONNECTION:
				4 Channel Amplifier using
				2 pair of RCA inputs.
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SPEAKER 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.

R (-) R (+)	L (-) L (+)	power	fuses	+12v	rem	gnd
		protect
speaker	output

(-) ------ bridged ------ (+)

+-

4 Ohm Speaker (1Ohm minimum)

R (-)	R (+)	L (-) L (+)	power	fuses	+12v	rem	gnd
			protect
		output

(- ------ bridged ------ (+)

+-

4 Ohm Speaker

2 Ohm Speaker (1 Ohm minimum)

+-

4 Ohm Speaker

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