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CONTROLS AND INDICATORS
1 • SPEAKER CONNECTORS: outputs for speakers connection.
The amplifier allows to connect speakers with minimum 0.5-ohm impedance per channel in
stereo configuration and with minimum 1-ohm impedance in mono-bridged configuration.
Should the 3-channel configuration be used, total impedance must not exceed the minimum 1-
ohm value.
Be sure to keep the right polarity in connecting the speakers. Avoid any contact between
poorly insulated wires and the car’s ground or metal pieces and between the wires
themselves.
2 • RCA INPUT CONNECTORS: connect the pre-output leads of the head unit to the input
connectors.
3 • RCA OUTPUT CONNECTORS: connect the pre-output leads to another amplifier.
5 • CHECK CONTROL LED: this led shows the amplifier’s status of operation:
WHITE: the unit is off. GREEN: the unit is working fine.
RED: the unit has entered the protection mode
SYNTHESIS1000 is equipped with three different protection devices:
- Overheating: in case of wrong installation and of amplifier’s overheating, the unit enters the
protection mode before being damaged. As soon as the temperature returns to normal values
and mistakes are corrected, the unit resumes normal operation.
- Overloads: in case a series of speakers is connected to the amplifier with the total
impedance value dropping below a tolerable level, i.e. 0.5 Ohm, the amplifier enters the
protection mode. To restore normal operation switch off the head unit and then switch it on
again.
- Output short circuit: in case of a short circuit at the speaker outlets the unit enters the
protection mode in order to avoid serious damage to the end-stage transistors. Normal
operation is resumed by removing the short circuit and by switching the head unit on again.
6 • FAN +/- CONNECTORS: allows to connect an external fan having a V=12Vcc supply
voltage and a power equal to P=6.6 W. approx.
7 • BATT + CONNECTOR for EXTERNAL CONDENSER: connect this terminal directly to the
positive pole of a (1 or 1.5) FARAD condenser of 24CARAT PE1.0 or PE1.5 so that the
amplifier’s dynamic capacities are increased. (it is advisable to position the condenser as
close as possibile to the SYNTHESIS1000 amplifier).
NOTABENE: charge the condenser by means of the resistance included in the
packaging before connecting it to the amplifier.
8 • BATT + LEAD: connect it directly to the battery positive pole (+) by using a cable with an
adequate section. Place a fuse between the battery and the amplifier so that the fuse is as
close as possible to the battery.
9 • GND CONNECTOR: Do not connect it directly to the battery negative pole (-) but connect
it to a clean part (i.e. paint-free) of the vehicle’s chassis by using a cable with an adequate
section.
2
RL
Bridged
RL
Bridged
RL
Bridged
3-channel configuration
2-channel configuration
1-channel configuration