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1.  Power On/Off Switch
2.  Power Indicator LED
3.  Channel A Input Level Control 

Sets the input sensitivity by attenuating the input signal 
strength. 
• Stereo: Controls overall input level of channel A without 
altering the relative high or low frequency settings. 
• Mono: Controls overall input level of entire unit in a 
mono configuration without altering the relative high, 
mid or low frequency settings.

4.  Channel A Peak Indicator LED 

• Stereo: The peak indicator LED will begin to illuminate 
when the input signal to channel A is within 3 dB of actual 
clipping. 
• Mono: The peak indicator LED will begin to illuminate 
when the mono input signal is within 3 dB of actual 
clipping.

5.  Channel A Low Frequency Output Level Control 

•Stereo: Controls channel A output 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 
control(8) by a factor of ten. In 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.

7.  Frequency Range Indicator LED 

The LED will light when the frequency range selector 
switch is in the 600 Hz to 13 kHz position.

1.  전원스위치 

전원을 공급, 차단하는 스위치입니다.

2.  전원 표시 LED 

전원의 ON/OFF상태를 표시하는 LED로서 전원스위치를 ON
시키면 점등됩니다.

3.  채널 A 입력 레벨 조절기  

채널 A에 입력되어지는 신호를 조절합니다. 

• 

스테레오 : 채널 A의 입력레벨을 고나 저 주파수 변화에 상관

없이 조절할 수 있습니다. 

• 

모노 : 두 채널이 모노로 구성될 때, 고, 중, 저의 주파수 변화

에 상관없이 입력레벨을 조절합니다.

4.  채널 A 피크 표시 LED 

• 

스테레오 : 이 입력레벨 표시기의 LED에 불이 들어오면 클립

핑이 들어오지 않게 채널 A의 입력 신호를 3dB 이내로 줄이십
시오. 

• 

모노 : 이 입력레벨 표시기의 LED에 불이 들어오면 클립핑이 

들어오지 않게 모노 입력의 신호를  3dB 이내로 줄이십시오.

5.  채널 A 저주파 출력 레벨 조절기

     

• 

스테레오 : 채널 A의 출력의 저음 레벨을 조절합니다. 

• 

모노 : 모노 출력의 저음 레벨을 조절합니다.

6.  주파수 범위 선택 스위치

 

주파수 조절기의 10배의 주파수로 증가시킵니다. 이 스위치를 
선택하지 않을 경우 주파수 범위가 60Hz에서 1.3kHz이며, 선
택시에는 주파수 범위가 600Hz에서 13kHz가 됩니다.

7.  주파수 범위 표시 LED 

이 LED는 주파수 범위가 600Hz에서 1.3kHz 스위치를 선택하
여 사용할 경우 불이 들어옵니다.

8.  채널 A 저주파 선택 

3.

 

Panel Descriptions

 

l

 

각 부의 명칭

6

A. FRONT PANEL /

 전면부 (VC-23, VC-34)

Level

LOW OUTPUT

LOW OUTPUT

Level

Level

Level

MID OUTPUT

Level

LOW OUTPUT

1

6

7

VC-23 

2

4

3

5

8 9

15

16

18

20

22

25

32

33

21

24

17

19

23

26

VC - 34

3 Way Stereo &

4 or 5 Way Mono

Crossover

1

7

VC-34

2

4

3

8

5

9

6

15

14

13

11

10

12

16

18

20

27

22

30

25

32

33

21

29

24

17

19

28

23

31

26

Summary of Contents for VC-23

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

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

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

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

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

Page 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...

Page 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...

Page 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...

Page 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...

Page 43: ......

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

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