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PROFESSIONAL FOUR CHANNEL 

      CLASS D  POWER  AMPLIFIER

DF 1404

M

K

II

Owner’s Manual

DF series

R

Summary of Contents for DF series

Page 1: ...PROFESSIONAL FOUR CHANNEL CLASS D POWER AMPLIFIER DF1 404 MKII Owner s Manual DF series R...

Page 2: ...ACCESSORIES 1 Power Cord 1pc 2 Owner s Manual 1pc 3 Warranty 1pc...

Page 3: ...onnected to the unit in operation CAUTION The high sound pressure level of speaker systems generated by high output power delivered by the amplifier may be hazardous to your hearing Please take adequa...

Page 4: ...s of channels bridged To ensure the most advantageous and faultless operation of the amplifier please read this Manual before use UNPACKING The manufacturer s quality control system provides for caref...

Page 5: ...erference with long input connecting cables Line Outputs The amplifier line outputs are parallel to the inputs each along the respective channel and provide for parallel connection of several amplifie...

Page 6: ...full range signal is selected individually for each channel with a slide switch The crossover frequency point is factory preset generally to 125Hz However it can be changed by replacing the crossover...

Page 7: ...ical signals of powerful high frequency spectrum Thermal Protection The continuous operation support protection system is common for four channels When the heat sink becomes heated over 50 the fan goe...

Page 8: ...SPEAKER OUTPUT THRU INPUT THRU TOP THRU SUB CROSSOVER LEVEL LEVEL 1 HF LF TOP THRU SUB CROSSOVER CH 3 INPUT ON OFF HI PASS FILTER 45 Hz 45Hz 150Hz 150Hz HF LF CH 4 ON OFF HI PASS FILTER 45 Hz 150Hz 15...

Page 9: ...clip LEDs for Channels 1 2 3 and 4 respectively They indicate overload condition causing distortion activation of thermal protection system which disables the respective channel the SIGNALLED goes of...

Page 10: ...ther amplifier THRU connectors are parallel to INPUTconnectors of respective channels INPUT balanced inputs XLR female channels 4 3 2 1 respectively Inputs for hannels 1 3 are also used to supply the...

Page 11: ...tor is interlinked with channel 2 output while channel 3 output connector with channel 4 output thus making it possible to use a single NL4FC connector wired accordingly to connect channel 1 and 2 lou...

Page 12: ...hazard Since the power applied to the loudspeaker is of primary concern in system design we have included the table below to allow you determine the appropriate wire gauge for your application Power L...

Page 13: ...use SpeakON NL4FC See the wiring on the figures below CAUTION Never attempt to jumper or otherwise link up any pins of output connectors 2 1 3 2 1 3 1 1 1 2 1 2 1 2 1 2 1 2 1 2 XLR male XLR female Co...

Page 14: ...which supplies 230VAC 50 60Hz In the event of line voltage sag the unit will continue to operate normally albeit with less power The mains lower voltage limit for the amplifier to retain its operabili...

Page 15: ...4Ohm Never attempt to jumper or otherwise link up any pins of SpeakON output connectors TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE DO NOT REMOVE COVE...

Page 16: ...mpt to jumper or otherwise link up any pins of SpeakON output connectors TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE DO NOT REMOVE COVER NO USER SERVI...

Page 17: ...s 1 and 3 with a SpeakON NL4FC connector wired for bridge connection Set the MODE switches for Channels 1 2 and Channels 3 4 to BRIDGE Adjust the input signal level with the LEVELattenuators for Chann...

Page 18: ...Filter Note Any pair of channels 1 2 or 3 4 can be operated in the bridge mode or individual mode if properly connected and set up The loudspeaker rated impedance should be at least 4Ohm for individu...

Page 19: ...ut Filter Note Any pair of channels 1 2 or 3 4 can be operated in the bridge mode or individual mode if properly connected and set up The loudspeaker rated impedance should be at least 4Ohm for indivi...

Page 20: ...temperature has exceeded 65 thus activating the thermal protection system Sound Distortion Only SIGNALLED is ON applied input signal is distorted before it gets to the amplifier loudspeakers are dama...

Page 21: ...1kHz Signal to Noise Ratio 98dB unweighted Input Impedance 10kOhm balanced Sensitivity 0 775V Crossover Frequency 125Hz basic model High pass Filter Cutoff Frequency 45Hz High Pass Filter Slope Rate 2...

Page 22: ...445 max 482 466 76 88 96 38 324 362 DIMENSIONS 20...

Page 23: ...PARK AUDIO II Ltd Vinnytsia Ukraine www parkaudio ua e mail park parkaudio ua R...

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