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A. MOUNTING 

The VS-2004/ VS-1204/VS-2003/VS-1203 is designed for 

standard 19″rack mounting. In addition, the amplifier is 

provided with sturdy no-skid rubber feet for secure table 
top or stacked operation. When rack mounting one or 

more amplifiers or when mounting in combination with 

other equipment, be sure to allow adequate front and rear 
ventilation to avoid possible heat related damage to your VS-

power amplifiers or other rack mounted items. 

B. OPERATING PRECAUTIONS 

Your STK VS-2004/VS-1204/ VS-2003/VS-1203 power 

amplifier is well protected from any external faults. However, 
we recommend following these common-sense precautions: 

1. Safety Instructions 

Read and follow all of the safety warnings on page 3 of this 
manual and on the separate safety precautions page enclosed 
with the unit.
Do not expose the VS-2004/ VS-2003/ VS-1204/ VS-1203 
to water or other liquids. Always unplug the unit if water is 
present. Failure to do so can result in injury or death from 
electric shock. 

2. Grounding 

If 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 
defeat the ground on the plug. 
Failure to properly ground the unit can result in damage 

to the amplifier or other equipment connected to it and 

represents a dangerous safety hazard. 

3. Line Voltage 

Operate from AC mains not more than 5% above or below 

the specified line voltage. Failure to comply may invalidate 

your warranty. 

4. Pre-Connection Caution 

Always switch off the power and set all the level controls to 
minimum before making any connections. 
This will eliminate any chance of unexpected, loud audio 
transients that could damage your speaker systems. 

C. VS-2004 / VS-1204 QUAD OPERATION 

The basic method of operation is recommended for 4 Ohm 
applications. Each channel provides a separate and discrete 
signal at the speaker outputs according to the signal received 

at the inputs. See to figure 1.

The VS-2004/VS-1204 offers four separate channels for 
quad operation. 

A. 설치 

본 기기는 19인치 표준 랙에 장착되도록 설계되어있습니다. 또한 
안전을 위해 미끄럼 방지용 러버 풋이 함께 제공됩니다. 하나 이상
의 앰프를 함께 설치한다거나 다른 장비와 함께 설치하실 때에는 
방열을 위하여 제품의 전면과 후면에는 공기의 흡입과 배출이 쉽
도록 막히지 않게 설치해 주십시오. 

B. 제품 동작 전 주의사항 

STK VS-2004/VS-1204/VS-2003/VS-1203 파워 앰프는 외부 연결 
장치의 손상이나 오류에도 안전하도록 설계되어 있습니다. 그렇지
만, 다음의 주의사항들은 꼭 지켜주세요.

1. 안전을 위한 주의사항 

본 사용 설명서의 3페이지에 나와 있는 안전을 위한 주의사항을 
반드시 읽고 숙지하시기 바랍니다.
본 제품이 물이나 다른 액체에 젖지 않도록 주의해 주십시오. 제품
이 물에 젖을 경우 반드시 전원 플러그를 전원으로부터 분리해 주
십시오. 
그렇지 않으면 감전사고로 인해 상해를 입거나 사망할 수 있습니
다.

2. 접지 

만약 파워 앰프가 접지용 전원선과 플러그로 이루어진 
세 개의 컨덕터로 된 전원선을 가지고 있다면 반드시 그것과 적합
한 전원 아울렛에 연결하여야 합니다. 
그라운드 리프트 어댑터를 사용하거나 플러그의 접지부를 없애고 
사용해서는 안 됩니다. 
부적절하게 접지 플러그를 사용하면 기기에 손상을 가할 수 있으
며 다른 기기에도 위험한 문제를 초래할 수 있습니다. 

3. 라인 전압 주의 

라인 전압이 ±5%를 넘지 않는 교류 전압을 사용해 주십시오. 이
를 어길 경우에는 제품 보증 대상에서 제외됩니다. 

4. 연결 전 주의사항 

제품의 연결 전에 전원을 끄고 모든 컨트롤 스위치를
최소로 하여 주십시오. 
이는 스피커 시스템에 손상을 입힐 수 있는 연결 시 순간적으로 예
상치 못한 큰 소리를 내는 경우를 방지 할 수 있습니다. 

C. VS-2004 / VS-1204 쿼드 동작 

4Ω의 기본적인 동작 구성을 권장합니다. 
각각의 채널은 입력 단자에서 받은 신호에 따라 각 스피커 출력단
자에 분리된 개별 신호를 내보냅니다.  그림 1 참조 
VS-2004/VS-1204는 쿼드 동작을 위해 네 개의 채널을 가지고 있
습니다.

4.

 

Connecting Your System

 

l

 

올바른 설치 방법

10

Содержание VS-1203

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 28: ...Note 28...

Страница 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...

Страница 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...

Страница 31: ......

Страница 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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