4. CONNECTIONS PANEL - DESCRIPTION

1. USB
   Connection socket (Micro USB female) to connect the processor to a PC/MAC and manage the functions via the S8 DSP software (see sec. 5.4). The connection standard is compatible with USB 1.1/ 2.0/3.0.
   
   
2. LED STATUS:
   Through the LED lighting it is possible to identify the status of the processor:
   Green: S8 DSP is on and functioning normally.
   Light green (BT LED TURNED OFF): S8 DSP is connected to the PC/MAC via USB.
   Green/blue flashing: S8 DSP is communicating data with the control device via software (see sec. 7.2 - 7.3).
   Purple: S8 DSP is configured with DIGITAL IN input but is not detecting a digital signal (see sec. 8.9).
   Orange: S8 DSP is signalling the presence of clipping on the analog input (see sec. 7.5.6).
   Red: S8 DSP is reporting a malfunction or breakdown.
   White: S8 DSP is in UPGRADE mode (see sect. 10). 
   
   
3. LED BT:
   Through the LED lighting it is possible to identify the status of the processor’s bluetooth connection,
   BLU flashing: S8 DSP is waiting to pair with a Bluetooth device (see sec. 7.3 - 8.1.6).
   BLUE: S8 DSP is connected with a Bluetooth device (see sect. 7.3 - 8.1.6).
   Turned off: S8 DSP is reporting a malfunction of the Bluetooth module or connected via USB.
   
   

4. PWR/REM:
   The cable is provided to manage the power supply and the various control connections.
   
   

   ￭ + BATT (7÷20 VDC): terminal for connecting the positive power supply pole to S8 DSP. 

   ￭ GND (Ground): terminal to connect the processor’s power supply negative pole. Connect the negative battery cable or a cable connected to the car’s chassis. To fix the ground connection (-) correctly use a screw already available on the vehicle’s chassis; remove any paint or grease residue if necessary, ensuring that there is a continuity between the negative terminal (-) of the battery and the fixing point. If possible, connect all audio components grounds to the same point as this solution is necessary to reduce the majority of parasitic noises which may arise during reproduction. 

   ￭ REM IN: terminal to turn on the S8 DSP via the Remote Out output of the audio signal source. The applied voltage must be between 6 and 20 VDC. If you are using a source with BTL amplified outputs, the S8 DSP can turn on automatically (see sec. 5.1), so you will not need to connect the REM IN terminal. 

   ￭ REM OUT: output terminal for the remote turn on of other devices/amplifiers connected to the S8 DSP. The processor takes 3 seconds to provide the REM OUT to the output, but you can manually set this delay with the software (see sec. 8.2.7.2.2). This output has a current capacity of 150 mA and can drive an automotive relay. 

   ￭ IN SEL: to switch to the selected input via the software (see sec. 8.2.7.1). This command is active by connecting the terminal to MEM GND (see sec. 5.1). 

   ￭ MEM SEL1 - MEM SEL 2: allows the selection of the memories of the S8 DSP (see sec. 8.10).
   This command is active by connecting the terminals to MEM GND (see sec. 5.1) according to the following table:
   

   MEM SEL1	MEM SEL2	MEMORIA SELEZIONATA
   NC	NC	A*
   MEM GND	NC	B
   NC	MEM GND	C
   MEM GND	MEM GND	D

   WARNING: the system returns to memory A when MEM SEL 1, MEM SEL 2 terminals are disconnected from MEM GND, so if you want to use this function it is advisable to finalize the device or assign memory A as a favorite preset to the input used (see sec. 8.2.7.3).
   

   ￭ MEM GND: ensures:
   1 if connected to IN SEL (see sec. 5.1) to switch to the selected input through the control software (see sec. 8.2.7.1), 

   2 if connected to MEM SEL1 - MEM SEL 2 (see sec. 5.1) the S8 DSP memories selection (see sec. 8.10)
   
   

5. OUTPUT Low level analog signal (4 Volt RMS).
   Ch1 - Ch2 - Ch3 - Ch4 - Ch5 - Ch6 - Ch7 - Ch8
   The cable is provided to be connected to the RCA cables going to the system amplifiers.
   
   
   

6. PRE IN - DIGITAL IN:
   ￭ PRE IN. ANALOG (RCA) low level input
   IN1 - IN2 - IN3 - IN4 - IN5 - IN6
   The cable is provided to connect the preamplified signal outputs from the analog Master source with RCA connectors. Through the software it will be possible to specialize the inputs by assigning the desired input (see section. 7.5.4 -7.5.5 - 8.2.2). Input sensitivity adjustable from 0,8 to 6 V RMS 

   ￭ DIGITAL IN. S/PDIF digital input
   S/PDIF-IN
   The cable is provided to connect the signal from your source with digital output via a specific coaxial cable for digital signals with RCA connection. S8 DSP accepts PCM signals at its input with a maximum sampling frequency up to 96 kHz 24 bit, therefore it is not possible to reproduce DOLBY DIGITAL (AC3) encoded multichannel signals from audio/video sources (such as the audio of a film in DVD) or DTS.
   
   
   

7. SPEAKER IN high level input:
   IN1 - IN2 - IN3 - IN4 - IN5 - IN6
   The cable is provided to be connected to the amplified signals coming from the analog Master source. Through the software it will be possible to specialize the inputs by assigning the desired input (see sec. 7.5.4 - 7.5.5 - 8.2.2). Input sensitivity adjustable from 2,5 to 21 VRMS.
   
   

   Remark: when connecting a speaker input cable, use solderless crimped Faston terminals.