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18

4.

 

Connecting Your System

 

l

 

올바른 설치 방법

I. FRONT PANEL INDICATORS

The front panel of the VS-2004/VS-1204 and VS-2003/
VS-1203 has several indicators to alert you to the status of 
various operating conditions. Knowing what these indicator 

LEDs are telling you will help you to use your STK amplifier.

1. Clip LED

A clip LED for each channel indicates that your signal level 
is so strong that there is distortion at the output of that 

channel. While it is normal for the clip LED to flash during 

program peaks, the LED should not remain constantly lit 
during operation. If it does, most likely you will hear the 
results in the form of distorted sound that can be damaging 
to your speaker systems. In this case, reduce the signal level 
by lowering the input level control for the channel that is 
clipping or reduce the level at the source. Note that when 

using the amplifier in the bridge mode, both clip LEDs of 

the bridged channels will operate simultaneously.

2. Mono/Bridge LED (VS-2004/VS-1204 ONLY)

The mono/bridge LED will light when you have set the 
rear panel switch to the mono/bridge position for bridged 
operation. Always make sure that this switch is in the correct 
position and that all speaker connections have been made 
correctly 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 parallel position for parallel input mode 
operation. Always make sure that this switch is in the correct 
position and that all speaker connections have been made 
correctly for the mode of operation you wish to use before 

powering up the amplifier.

4. Protect LED

The protect LED indicates that there is a problem either in 

the amplifier's external connections, load or temperature 

conditions or its internal functions. If one of these situations 

occurs, the amplifier senses the problem and automatically 
switches into it's "protect mode." The protect LED will 
light to warn you of the trouble and the amplifier will stop 
working. If this happens, switch off the amplifier and refer to 

the Trouble Shooting Guide at the end of this manual. If you 
feel that you have been able to correct the fault condition that 

caused the amplifier to go into the protect mode, restart the 
amplifier. If the protect LED remains lit when attempting to 
resume amplifier operation, do not use the amplifier.
Refer the amplifier to an authorized STK service facility or 

contact your dealer for help.

5. Power Indicator LED

The power indicator LED indicates that the power switch is 
in the on position.

I. 전면부의 표시등

전면부의 여러 표시등들은 앰프의 상황 별 여러 동작 상태를 알려
줍니다. 여러 표시등의 의미를 정확히 알면 앰프를 사용하기 훨씬 
편리합니다.

1. 클립 표시등

클립 표시등은 각 채널에 입력되는 신호의 세기가 너무 
강해 출력이 최고치에 근접하는 것을 알려줍니다. 
프로그램이 최고조인 동안 클립 표시등이 깜박이며 동작 동안 지
속적으로 점등되지는 않습니다. 
지속적으로 표시등이 켜져 있다면 음질이 일그러지는 것을 알 수 
있을 것입니다. 이러한 일그러짐은 스피커 시스템에 큰 손상을 가
져옵니다.
이런 경우에는 일그러짐이 일어나는 채널의 음량 조절기를 줄여
주시기 바랍니다.
앰프를 모노/브릿지 모드로 사용할 경우에는 브릿지 모드의 클립
표시등 모두 동시에 동작하게 됩니다. 

2. 모노/브릿지 표시등 (VS-2004/VS-1204 전용)

모노/브릿지 표시등은 앰프 후면부의 모노/브릿지 스위치를 모노/
브릿지 모드에 위치 시켰을 때 켜집니다.
앰프의 전원을 켜기 전에 항상 스위치가 올바른 위치에 
있는지 확인하시고 모든 스피커 연결을 정확하게 구성해 주십시
오. 

3. 패러렐 표시등 (VS-2004 /VS-1204 전용)

패러렐 표시등은 앰프 후면부의 패러렐 스위치를 병렬입력 모드
에 위치시켰을 때 켜집니다.
앰프의 전원을 켜기 전에 항상 스위치가 올바른 위치에 
있는지 확인하시고 모든 스피커 연결을 정확하게 구성해 주십시
오. 

4. 보호모드 표시등

보호모드 표시등은 앰프 외부의 연결에 문제가 있거나 
부하 또는 온도, 그리고 내부의 기능에 문제가 생겼을 경우에 점등
됩니다. 
문제 상황 발생 시 앰프는 자동으로 보호 모드 스위치를 켭니다. 
보호모드로 전환되면 앰프는 모든 동작을 멈추고 보호모드 표시
등을 점등시킵니다. 보호모드 표시등이 켜지면 앰프의 전원을 꺼
주십시오.  
문제를 일으킨 요소를 올바르게 바로잡았다면 앰프의 전원을 다
시 켜주십시오.
만약 그럼에도 불구하고 보호모드 표시등이 켜진 채로 
있다면 앰프의 사용을 중단하시고 STK 고객 서비스팀이나 영업사
원을 통해 앰프를 수리하십시오.

5. 전원 표시등

전원표시등은 앰프에 AC 주 전원이 연결되어 전원이 들어올 경우 
켜집니다.

Summary of Contents for VS-1203

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...

Page 31: ......

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

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