crescendo SYMPHONY S1 Plus Owner'S Manual Download Page 6

CLIP LED ( CH1/2, CH3/4 )

When input signal is close to clipping level. CLIP LED

begins to light up.

At full clip, the protection LED will light up.

SPEAKER TERMINAL BLOCK 

Connect speaker cables from speaker terminal block 

to full range speakers  

Full range speakers impedance should be checked 

carefully. 

S2 & S4 minimum impedance is 2 ohm stereo or 

4 ohm bridged. 

RCA INPUTS 

Connect preamp signal cables from the source or 

the headunit to RCA input.

GAIN ( 6V - 0.2V )

Matching the output voltage of the headunit’s 

RCA line-outs to amplifier’s input.

HIGH PASS FILTER ( 20(200)Hz - 800(8K)Hz )

Control the high pass filter frequency for the speaker 

outputs.

When setting multiply x1, then the frequencies can 

be adjusted from 20Hz to 800Hz. 

When setting multiply x10, then the frequencies can 

be adjusted from 200Hz to 8KHz.

Select HPF ON/OFF switch

LOW PASS FILTER ( 50(500)Hz - 800(8K)Hz )

Control the low pass filter frequency forthe speaker 

outputs.

When setting multiply x1, then the frequencies can 

be adjusted from 50Hz to 800Hz. 

When setting multiply x10, then the frequencies can 

be adjusted from 500Hz to 8KHz.

Select LPF ON/OFF switch

MODE ( 2CH / 4CH )

Select 2CH mode for a single pair of RCA inputs on CH1&2

to activate all 4 speaker outputs. ( No Y splitter needs )

Select 4CH mode for 2 pairs of RCA inputs and standard

speaker outputs.

REMOTE CONTROL ( OPTIONAL ) 

Use this to control level of the amplifier from 

your driver’s seat.

GROUND ( GND ) & POWER ( +12V )

The power and ground will accommodate 4 guage

wire. 

Use high quality pure copper wire only.  

REMOTE ( REM )  

REM connector will accept wire sizes from12 to 16 

guage.

This terminal is used to remotely turn-on and turn-off 

the amplifier when +12V DC is applied.  

POWER & PROTECT LED

POWER LED ; Blue-lit shows correct operation.

PROTECT LED : Red-lit shows general malfunction, 

faulty connection, or thermal protection.

 

S2 & S4 MULTI-CHANNELS INPUT & OUTPUT CONNECTION

Summary of Contents for SYMPHONY S1 Plus

Page 1: ...SYMPHONY OWNER S MANUAL S1 v2 S1 plus s2 s4 S6 high performance DIGITAL AMPLIFIERs...

Page 2: ...ophy of SYMPHONY amplifiers and mode of regulation requires that proper installation and load impedance instructions be adhered to at all times Minimum impedance recommended for S1 v2 and S1 Plus are...

Page 3: ...toggle switch a relay your source unit s remote trigger cables or power antenna trigger cable Connect the remote turn on cable to the REM remote terminal GND GROUND Locate a secure grounding connectio...

Page 4: ...uencies LOW PASS FILTER 35Hz 250Hz This allows you to tune the response of the amplifier at higher bass frequencies to roll off for a seamless integration into your midbass BASS BOOST 0 9dB This allow...

Page 5: ...S1 v2 S1 Plus DIGITAL MONOBLOCK SPEAKER CONNECTION DIAGRAM 1 S1 v2 S1 Plus DIGITAL MONOBLOCK SPEAKER CONNECTION DIAGRAM 2 4 1ohms 4 2ohms 4 2ohms...

Page 6: ...S FILTER 50 500 Hz 800 8K Hz Control the low pass filter frequency forthe speaker outputs When setting multiply x1 then the frequencies can be adjusted from 50Hz to 800Hz When setting multiply x10 the...

Page 7: ...S2 FULL RANGE DIGITAL SPEAKER CONNECTION DIAGRAM 1 S2 FULL RANGE DIGITAL SPEAKER CONNECTION DIAGRAM 2 4 2ohms 4 2ohms 8 4ohms 4 2ohms 4 2ohms Stereo Operation Bridged Operation...

Page 8: ...L RANGE DIGITAL SPEAKER CONNECTION DIAGRAM 1 S4 FULL RANGE DIGITAL SPEAKER CONNECTION DIAGRAM 2 8 4ohms 4 2ohms 4 2ohms 4 2ohms 4 2ohms 4CH Stereo Operation Bridged Operation 4 2ohms 4 2ohms 4 2ohms 4...

Page 9: ...pass filter frequency forthe speaker outputs Select LPF ON OFF switch MODE CH2 CH4 CH6 Select CH2 mode for a single pair of RCA inputs on CH1 2 to activate all 4 speaker outputs No Y splitter needs S...

Page 10: ...E DIGITAL SPEAKER CONNECTION DIAGRAM 1 S6 FULL RANGE DIGITAL SPEAKER CONNECTION DIAGRAM 2 Bridged Operation 4 2ohms 4 2ohms 4 2ohms 4 2ohms 4 2ohms 4 2ohms 4 2ohms 4 2ohms 4 2ohms 4 2ohms Stereo Opera...

Page 11: ...Please allow for better airflow around the amplifiers S1 v2 S1 Plus S2 S4 and S6 working voltage is 8 5V 16Volts Due to the high efficiency of the amplifier input signals over 4v S2 S4 S6 may cause pr...

Page 12: ...aster or third party amplifier modifications This warranty is limited to the amplifier and specifically excludes any incidental or consequential damages connected therewith Warranty is non transferabl...

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