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7.

 

Professional Operating Tips

 

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전문적인 동작 방법

2. What Do The Terms "Passive" and "Active" 
Crossover Mean?

Electronically speaking, the term passive means that the 
device would not require any external power source to 
function such as a battery or an external electrical power 
source. In the case or a passive crossover, usually mounted 
inside the speaker cabinet, all you need to do is connect the 
speaker output of your amplifier to the full range input of 
your speaker system. No other adjustments are needed to the 
passive crossover system. Just plug in and play. (see figure 1.)

1. Why Do You Need A Crossover?

Speaker components(woofers, horns and tweeters) are only 
designed to reproduce a certain range of sound. 
Simply stated, a tweeter will not reproduce the sound of a 
big bass drum, and a woofer will not reproduce the sound 
of a cymbal's "sizzle". If you tried to feed the sound of the 
bass drum through the tweeter, it would probably destroy the 
delicate, lightweight membrane or diaphragm that enables it 
to accurately reproduce the sizzle of the cymbal. While you 
probably will not damage a woofer by running the cymbal's 
sound through it, you simply will not hear very much sound! 
The woofer's cone is much too large and heavy to accurately 
reproduce the cymbal's sizzle. A crossover makes sure the 
correct sounds are being fed to the appropriate speaker 
components.

2. 크로스오버에서 “패시브”와 “액티브”라는 용어는 무엇을 
뜻할까요?

전지적으로 말한다면, "패시브“는 외부의 전원 공급이  필요하지 
않은 것을 말합니다. 패시브 크로스오버의 경우 일반적으로 스피커 
캐비넷 안에 설치되어 있고 스피커 연결을 위해 해야 할 일은 오직 
앰프와 연결하는 것 뿐입니다. 다른 추가적인 연결은 필요없습니
다. 바로 연결하고 바로 사용하세요. (그림 1.)

1. 크로스오버가 필요한 이유가 무엇일까요?

스피커 컴포넌트(우퍼, 혼 그리고 트위터)는 일정 사운드 영역의 재
생성만을 위해 설계되었습니다.
간단하게 말해서, 트위터는 큰 베이스 드럼의 소리를 낼 수 없고 우
퍼는 심벌즈의 소리를 재생해 낼 수 없습니다. 만약 트위터를 통해 
베이스 드럼의 소리를 내려고 한다면 분명 심벌즈의 소리를 내는 
섬세하고 가벼운 멤브레인이나 진동판에 손상을 입히게 될 것입니
다. 우퍼를 통해 심벌즈의 소리를 들으려고 하면 분명 우퍼는 고장
나지는 않을 것입니다. 그러나 본래의 심벌즈 소리보다 더 크고 많
은 소리를 듣게 될 것입니다. 우퍼의 혼은 심벌즈의 소리를 내기에 
너무 크고 무겁기 때문입니다. 
크로스오버는 음향신호가 올바른 스피커 컴포넌트로 들어 갈 수 있
도록 해주는 장비입니다.

MIXER

EQUALIZER

AMPLIFIER

PASSIVE

CROSSOVER

3-WAY

SPEAKER SYSTEM

TWEETER

(HIGHS)

HORN

(MIDS)

WOOFER

(LOWS)

FIGURE 1. Audio System Using A Passive Crossover  l  

그림 1. 패시브 크로스오버를 사용한 오디오 시스템

An active crossover would require external power, typically 
from an electrical wall outlet. As in the case of the VC-23 
and VC-34, it is usually an external device, placed before the 
power amplifiers in the audio signal path. It does require 
precise adjustments in order to match the speaker system you 
are using. 
For example, a three way speaker system would require a 
three way active crossover. 
If you are using a stereo sound system, a stereo active 

액티브 “크로스오버”는 외부 전원, 특히 AC 전원을 필요로 합니다. 
또한, VC-23과 VC-34의 경우, 스피커와 파워 앰프 연결 이전의 
외부 기기라고 보시면 됩니다.
사용하려는 스피커 시스템과 매칭시키기 위해서는 좀 더 정확한 설
정이 필요하게 됩니다. 예를 들어 3-웨이 스피커 시스템을 사용할 
때에는 3-웨이 액티브 크로스 오버가 필요합니다. 스테레오 사운
드 시스템을 사용할 때에는 스테레오 액티브 크로스오버가 반드시 
사용되어야 합니다. 그림-2를 참고해 주세요. 그림-2는 액티브 시
스템에서  스피커 시스템의 각 컴포넌트 별로 앰프를 분리하여 사

Содержание VC-23

Страница 1: ...C 23 VC 34 Active Crossover OWNER S MANUAL VC 34 3 Way Stereo 4 or 5 Way Mono Crossover VC 23 OUTPUT PIN 1 GND 2 HOT 3 COLD 3 2 Level LOW OUTPUT LOW OUTPUT Level Level Level MID OUTPUT Level LOW OUTPU...

Страница 2: ...ty Instructions l 4 5 3 Panel Description l 6 12 4 Connecting Your System l 13 14 5 Operating Your System l 15 29 6 Care and Maintenance l 30 7 Professional Operating Tips l 31 33 8 System Hookup Diag...

Страница 3: ...three way crossover with an additional mono subwoofer output making it a four way crossover Similar to the VC 23 the VC 34 can be used as a mono four or five way crossover Both of these units feature...

Страница 4: ...sources refer to the operating instructions 8 Polarization If the appliance is equipped with a polarized alternating current line plug a plug having one blade wider than the other this plug will fit i...

Страница 5: ...of other controls may result in damage and will often require extensive work by a qualified technician to restore the appliance to its normal operation e If the appliance has been dropped or the cabi...

Страница 6: ...tput level of the selected low frequency range Mono Controls output level of the selected mono low frequency range 6 Frequency Range Selector Switch Multiplies the frequency selected on the frequency...

Страница 7: ...ch is in the 600 Hz to 13 kHz position 13 Channel A Mid Frequency Selector VC 34 Only Stereo Selects crossover frequency determining where the channel A mid frequency band terminates and the high freq...

Страница 8: ...ctual clipping Mono This LED is inactive when the VC 23 VC 34 are used in the mono configuration 22 Channel B Low Frequency Output Level Control Stereo Controls channel B output level of the selected...

Страница 9: ...the out position the frequency range is from 60 Hz to 1 3 kHz In the in position the frequency range is from 600 Hz to 13 kHz 29 Frequency Range Indicator LED VC 34 Only The LED will light when the f...

Страница 10: ...for parallel mono operation Mono 3 way This jack is inactive when the VC 23 is used in the mono configuration 5 Mono Subwoofer Output The mono signal from the sub bass filter is present at this output...

Страница 11: ...r connection to the input of the channel B high frequency amplifier Mono The mono high frequency signal is present at this output for connection to the input of the high frequency amplifier 14 Channel...

Страница 12: ...nal is present at this output for connection to the input of the channel A mid frequency amplifier Mono The mono low mid frequency signal is present at this output for connection to the input of the l...

Страница 13: ...your unit is supplied with a grounded power cord and plug connect the unit only to a properly grounded AC outlet Do not use a ground lift adapter or attempt to defeat the ground on the plug Failure to...

Страница 14: ...est in one of the many higher quality low impedance mics available on the market or alternatively purchase an impedance matching transformer from your dealer 2 1 4 Phone Input Jacks These tip sleeve j...

Страница 15: ...way speaker systems that have separate inputs available for the high and low frequencies 1 Power amplifier to reproduce the very low or sub bass frequencies 1 or 2 subwoofer speaker systems 3 Stereo 3...

Страница 16: ...end such as an unbalanced phone plug on one end and an XLR on the other 3 Connect Low Frequency Output Connect the channel A low frequency output of the crossover to the left or channel 1 input of th...

Страница 17: ...y input of your right side speaker system 9 Connect High Frequency Driver Connect the left or channel 1 speaker output from the high frequency power amplifier to the high frequency input of your left...

Страница 18: ...et Crossover Frequency On the front panel turn your channel A low high VC 23 or low mid VC 34 frequency control to the crossover frequency recommended by your speaker system manufacturer as outlined a...

Страница 19: ...mid frequency output 5 Check Frequency Range Selector Switch The yellow indicator light will indicate the crossover frequency range selector switch is in the in position once power has been switched o...

Страница 20: ...ard left or to the off position As you are operating in the stereo mode the mono mode indicator light on your VC 23 or VC 34 should not be illuminated 11 Set Input Level Controls Now you are ready to...

Страница 21: ...r is functioning properly without changing your output level settings and without having to walk up to each speaker system to specifically listen to each driver The mute switch functions in the in pos...

Страница 22: ...more subwoofer speaker systems 3 Mono 4 Way Operation VC 34 The mono 4 way system will require the following equipment to be connected to the outputs of the VC 34 1 or more amplifiers to reproduce th...

Страница 23: ...h different connectors on each end such as an unbalanced phone plug on one end and an XLR on the other 3 Connect Low Frequency Output Connect the channel A low frequency output of the crossover to the...

Страница 24: ...eaker systems 12 Connect High Mid Frequency Speakers Connect the speaker outputs from the high mid frequency power amplifier to the high mid frequency speaker inputs of your speaker systems 13 Connect...

Страница 25: ...to the crossover frequency recommended by your speaker system manufacturer as outlined above This frequency will be the minimum at which your mid frequency speaker can safely operate You may wish to...

Страница 26: ...quencies VC 34 On the front panel turn your low to low mid frequency control to the crossover frequency recommended by your speaker system manufacturer as outlined above This frequency will be the min...

Страница 27: ...id To High Crossover Frequency On the front panel turn the high frequency control to the recommended crossover frequency This frequency will be the minimum at which your high frequency driver or tweet...

Страница 28: ...and proper gain structure procedures when using any sound system but it is of particular importance when using this device This section will help you learn correct gain adjustment procedures Once you...

Страница 29: ...h speaker is functioning properly without changing your output level settings and without having to walk up to each speaker system to specifically listen to each driver The mute switch functions in th...

Страница 30: ...icals to clean the unit A large clean paint brush is useful to remove accumulated dust between the many control knobs on the front panel If liquids are accidentally spilled on to the unit disconnect t...

Страница 31: ...tweeter it would probably destroy the delicate lightweight membrane or diaphragm that enables it to accurately reproduce the sizzle of the cymbal While you probably will not damage a woofer by running...

Страница 32: ...bes a few pros and cons about both methods of frequency routing In order to extract maximum performance from a sound system an active crossover is clearly the effective choice or the audio professiona...

Страница 33: ...ertion loss Adjustable crossover frequencies More headroom cleanest sound Very low distortion Steeper 24 dB per octave slopes minimize Phase cancellation between speakers Power handling increases slig...

Страница 34: ...OKUPS NOT USED SET SWITCH TO MONO TO TWEETER TO MID HORN TO DUAL 15 WOOFERS TO DUAL 18 SUBWOOFERS V 6 HIGH AMP V 6 MID AMP V 12 Plus LOW V 12 Plus SUBWOOFER NOT USED OFF INPUT LEVEL 5 8 HIGH LEVEL 8 H...

Страница 35: ...9 Block Diagram l VC 23 3 Way Mono l VC 23 3 35...

Страница 36: ...36 9 Block Diagram l VC 23 2 Way Stereo l VC 23 2...

Страница 37: ...9 Block Diagram l VC 34 4 Way Mono l VC 34 4 37...

Страница 38: ...38 9 Block Diagram l VC 34 3 Way Stereo l VC 34 3...

Страница 39: ...d In Out Unbalanced In Out XLR 1 4 Phone Jack XLR Impedance Balanced Input Unbalanced Input Output 10 10 100 10 10 100 Maximum Input Output Level Input Output Gain Clip Light Threshold Indicators 20 d...

Страница 40: ...Hz 60 13kHz 60 250Hz 24dB 24dB 24dB 24dB In Out In Out XLR 1 4 XLR 10 10 100 10 10 100 dB 20 dBm 12 dBm 3 dB 10 20 dBm 12 dBm 3 dB 10 120 230V AC 50 60Hz 15W 120 230V AC 50 60Hz 15W H W D mm inch 44 4...

Страница 41: ...EAR WARRANTY 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 it...

Страница 42: ...11 1 STK 1 AS STK STK STK Professional Audio A S 42 FOR YOUR RECORDS 1 STK 543 15 3 21104 TEL 032 525 1788 1790 FAX 032 525 1784 E mail stkcom stkpro com www stkpro com...

Страница 43: ......

Страница 44: ...Owner s Manual For The STK VC Series Active Crossover Printed In Korea STK Professional Audio NOV 2018...

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