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Introduction

 

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제품 소개

STK VS-2004/VS-1204 는 다양한 사운드 시스템의 설

치와 사용을 위해 설계된 4채널 출력의 최신 성능의 고

품질 제품입니다. VS-2004/VS-1204 는 2채널 스테레오 

앰프처럼 고출력이 가능한 모노브릿지 방식으로 사용하

거나 또는 각각의 스피커 위치에 따른 채널 별 출력 모드

로 선택 사용할 수 있습니다. 또한 8옴 출력과 고전류의 

4 옴 출력에 유연하게 응답합니다. 울트라 급의 낮은 노

이즈와 최고음질의 저왜율 A/B 크라스 출력단, 어떠한 

과도입출력도 컨트롤하는 CTLL 레벨 리미터로 구성되

어 있습니다.

STK VS-2003/VS-1203 은 풀레인지와 서브우퍼 조

합의 프로용 고음질 바이-레인지사운드 시스템의 설치

와 사용을 위해 설계된 최신 성능의 고품질 제품입니다. 

VS-2003/VS-1203은 자체적으로 모노 베이스와 2채널 

스테레오의 독립적인 출력이 가능하도록 주파수 가변을 

할 수 있는 2웨이 능동 크로스 오버 컨트롤러에 의해 초

저역 모노와 풀레인지 사운드로 분리된 시그널을 내부 

변환 시스템에서 최적화시킵니다. 따라서 기존의 스피커 

시스템의 사운드를 한층 높은 품질로 만들어 줍니다. 

STK의 VS 시리즈 멀티채널 파워앰프의 차별화된 특

징은 초경량 고출력의 디지털 스위칭 파워 서플라이입니

다. 본제품들은 최악의 조건하에서도 문제없이 동작하기 

위해 고효율의 가변 속도형 팬 냉각방식을 채용하고 있

습니다. 또한, LED 표시등을 적용한 멋진 전면부는 제품

의 동작 상태와 기능을 알기 쉽도록 설계되어 있습니다. 

기존의 가치를 넘어서는 더욱 강력하고 정확하며 신뢰할

만한 성능을 제공하기 위해서 STK VS-2004/VS-1204/

VS-2003/VS-1203 디지털 파워 앰프는 수년간의 연구를 

거듭하여 설계 되었습니다. 제품을 동작시키기 전에 이 

사용설명서를 꼭 읽어보시고 이해하시어 올바르게 제품

을 사용해 주시길 바랍니다.

The STK VS-2004/VS-1204 is multipurpose 

high outputs, quad power amplifier state-of-the-art 
performance designed for use installation and sound 
reinforcement use. The products responsible to high 
voltage 8 ohm outputs and high current 4 ohm outputs 
have the AB class output stage for ultra class lower noise 
level and super clean THD sound with STK CTLL over 
level limiter control circuits. The VS-2004/VS-1204 is 4 

CH outputs power amplifier and that can also be used 

for high level monophonic performance by making use 
of  the bridge mode. 

The VS-2003/VS-1203 is Bi-Amplification high 

ouputs, 3 CH power amplifier state-of-the-art 
performance designed for use professional sonic 
quality sound reinforcement. The VS-2003/VS-1203 is 
a incorporated two-way active crossover with 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 separate the Mid-High and Low 
frequency for maximum optimization on all transducer 
system. A distinguishing feature of  the VS Series 
Amplifiers is the Digital switching power supply that 
makes high powered performance with extremely low 
weight possible.

The VS-2004/VS-1204/VS-2003/VS-1203 feature 

oversized high efficient heat sinks in a wind tunnel 
cooling system with variable speed fans for trouble 
free operation under the most adverse conditions. In 
addition, VS-2004/VS-1204/

VS-2003/VS-1203 has attractive front panels with 

a full complement of  LEDs to monitor functions 
and performance level conditions. While providing 
powerful, accurate and reliable performance along with 
outstanding value, your STK multi channels power 

amplifier has been designed for many years dependable 

service. Please take the time to read this manual before 
operation so that you fully understand the features and 
correct use of this exceptional product.

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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