STK Professional Audio VS-1203, Owner'S Manual

Page 1: ...35 63 230 75 MONO PARALLEL MONO PARALLEL VS 1204 QUAD AMPLIFIER PARALLEL SHIFT PARALLEL SHIFT CH 1 CH 2 CH 3 SUB VS 2003 BI AMPLIFIER PROTECT PROTECT POWER CLIP 10 20 SIG CLIP 10 20 SIG CLIP 10 20 SIG...

Page 2: ...5 3 Panel Description l 6 9 4 Connecting Your System l 10 18 5 System Hookup Diagram l 19 22 6 Block Diagram l 23 25 7 Specifications l 26 27 8 Warranty Information l 29 30 VS 2004 VS 1204 4 Channel P...

Page 3: ...th variable frequency control that allow independent amplification of the full range stereo outputs and a mono bass output on a single unit The signal is then devided by active crossover filter to sep...

Page 4: ...power company For appliances intended to operate from battery power or other sources refer to the operating instructions 8 Polarization If the appliance is equipped with a polarized alternating curren...

Page 5: ...ols that are covered by the operating instructions as an improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the appli...

Page 6: ...itions should occur such as a short in a speaker cable or connector or excessively high operating temperatures this LED will light and the amplifier will stop operation until the condition is correcte...

Page 7: ...ter rolls of signals below either 30Hz or 50Hz This improves bass performance by limiting sub audio cone motions making more power available for the speaker rated frequency range The filter settings f...

Page 8: ...er is being driven past normal power limits into distortion 4 Protect Indicator LED VS 2003 VS 1203 3 VS 1 1 2 2 3 4 3 Panel Descriptions l 8 FRONT PANEL l VS 2003 VS 1203 REAR PANEL SECTION l VS 2003...

Page 9: ...ve for weakening level of mid bass frequency range because if have double level the sub sound frequency 11 Input filter Low Cut Filter CH3 Sub The low frequency HF filter rolls of signals below either...

Page 10: ...your power amplifier is supplied with a three conductor grounded power cord and plug connect the unit only to a properly grounded mains outlet Do not use a ground lift adapter or otherwise attempt to...

Page 11: ...nput signal should be about as high as you will ever need it to be This way it will be as far above the amplifier s noise floor as possible ensuring as excellent performance signal to noise ratio Adju...

Page 12: ...Speaker Outputs Connect speaker systems to speaker outputs only as shown in figure 2 The total speaker load for each bridged channel must be at least 8 ohms or above If you try to operate at less than...

Page 13: ...VS 2004 VS 1204 3 Speaker Outputs Connect speaker systems to speaker outputs as shown in figure 3 The total speaker load for each channel must be at least 4 ohms or higher E VS 2004 VS 1204 3 1 2 VS...

Page 14: ...ply a nominal signal to the inputs The level of the input signal should be about as high as you will ever need it to be This way it will be as far above the amplifier s noise floor as possible ensurin...

Page 15: ...inal to the red connector of output Connect the CH 4 speaker s negative terminal to the black connector of output Note that the speaker load impedance must be 4 ohms or greater Connection For Bridged...

Page 16: ...r 45 clockwise to lock it in place Output Connection Table l Output Function l Connector l Pins l Left CH 1 1 1 Right CH 2 1 1 Sub Mono CH 3 1 1 Connection for Stereo 2 Way Sub woofer Operation Connec...

Page 17: ...from the AC power source before making any connections When connecting your speakers using either method be sure to pay close attention to proper polarity Although connecting your speaker systems out...

Page 18: ...rrectly for the mode of operation you wish to use before powering up the amplifier 3 Parallel LED VS 2004 VS 1204 ONLY The parallel LED will light when you have set the rear panel switch to the parall...

Page 19: ...5 0 15 15 0 15 15 0 15 15 0 OL 10 0 20 15 15 0 15 15 0 15 15 0 15 15 0 OL 10 0 20 15 15 0 15 15 0 15 15 0 15 15 0 OL 10 0 20 15 15 0 15 15 0 15 15 0 15 15 0 OL 10 0 20 15 15 0 15 15 0 15 0 15 15 0 OL...

Page 20: ...0 OL 10 0 20 15 15 0 15 15 0 15 15 0 15 15 0 OL 10 0 20 15 15 0 15 15 0 15 15 0 15 15 0 OL 10 0 20 15 15 0 15 15 0 15 15 0 15 15 0 OL 10 0 20 15 15 0 15 15 0 15 0 15 15 0 OL 10 0 20 15 15 0 15 15 0 1...

Page 21: ...5 0 15 15 0 15 15 0 OL 10 0 20 15 15 0 15 15 0 15 15 0 15 15 0 OL 10 0 20 15 15 0 15 15 0 15 15 0 15 15 0 OL 10 0 20 15 15 0 15 15 0 15 15 0 15 15 0 OL 10 0 20 15 15 0 15 15 0 15 15 0 15 15 0 OL 10 0...

Page 22: ...5 0 15 15 0 OL 10 0 20 15 15 0 15 15 0 15 15 0 15 15 0 OL 10 0 20 15 15 0 15 15 0 15 15 0 15 15 0 OL 10 0 20 15 15 0 15 15 0 15 15 0 15 15 0 OL 10 0 20 15 15 0 15 15 0 15 15 0 15 15 0 OL 10 0 20 15 15...

Page 23: ...23 6 Block Diagram l VS 2004 VS 1204 VS 2003 VS 1203 SMPS BLOCK...

Page 24: ...CURRENT SPLITTER CURRENT SPLITTER CURRENT SPLITTER CURRENT SPLITTER AB AB AB AB CH 1 OUTPUT CH 2 OUTPUT BRIDGE 1 OUTPUT CH 3 OUTPUT CH 4 OUTPUT BRIDGE 2 OUTPUT HI FREQ RECTIFIERS ST BY 15V SWICH MUTE...

Page 25: ...ONTRL DC FAULT DETECTOR CH 1 CH 2 CH 3 FROM CURRENT SPLITTER TO CURRENT SPLITTER THERMAL BIAS SENSING MUTE CONTROL CURRENT SPLITTER CURRENT SPLITTER CURRENT SPLITTER POSITIVE STEP POSITIVE STEP AB CLA...

Page 26: ...Signal To Noise Ratio l A weighted RMS 100 Residual Noise l LPF level minimum 68 69 Damping Factor 8 50 l 300 Slew Rate 8 1 Rated Output l 52 V sec 40 4V usec Channel Separation 8 1 Rated Output l 65...

Page 27: ...th 3 Roll Off by Filter On l CH 1 2 60 or 90 30 CH 3 20 250 Signal To Noise Ratio l A weighted RMS 100 Residual Noise l LPF level minimum 68 Damping Factor 8 50 l CH 1 2 300 CH 3 350 Slew Rate 8 1 Rat...

Page 28: ...Note 28...

Page 29: ...ARRANTY STK electronics are warranted to be free from defects in materials and workmanship under normal use for a period of 1 year from date of original purchase During that period STK will at its opt...

Page 30: ...8 1 STK 1 AS STK STK STK Professional Audio A S 30 FOR YOUR RECORDS 1 STK 250 2 TEL 032 525 1788 1790 FAX 032 525 1784 E mail stkcom stkpro com www stkpro com...

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Page 32: ...Owner s Manual for The STK VS series 2 Channel Power Amplifier Printed In Korea STK Professional Audio DEC 2013...