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1/3

RD

 옥타브와 2/3

RD

 옥타브 이퀄라이저

대부분의 그래픽 이퀄라이저는 가청 주파수 범위를 한 옥타브 당 
3개의 대역(밴드)으로 나오거나 2개의 옥타브를 3개의 대역(밴드)
으로 나누어 다루고 있습니다. 하나의 옥타브는 주파수 대역 1~2
개 정도의 범위를 커버합니다. 예를 들어 50Hz ~100Hz 주파수 대
역을 하나의 옥타브라고 했을 때, 10개의 옥타브는 가청 주파수 영
역, 즉 20Hz ~20kHz까지를 커버합니다. 만약 각 10개의 옥타브
가 3개로 나뉜다면, 30개의 옥타브 또는 주파수 대역(밴드)을 얻
을수 있습니다. (STK 이퀄라이저의 31개의 대역은 20Hz와 가청 
주파수 범위의 끝인 20kHz 모두를 포함합니다.) 1/3

rd

 옥타브의 

이퀄라이저는 한 옥타브 범위에 3개 대역이 있다는 것을 뜻하며, 
2/3rd 옥타브의 이퀄라이져는 두 옥타브 범위에 3개의 대역(밴드)
이 있다는 것을 뜻합니다. 
그러므로 2/3rd 옥타브 이퀄라이저의 한 대역은 1/3rd 옥타브 이
퀄라이저의 한 대역보다 그 범위가 2배 더 넓습니다. 그래서 2/3rd 
옥타브 이퀄라이저의 어떠한 대역(밴드)의 부스팅이나 컷팅은 더 
넓은 범위의 주파수 영역에 영향을 끼치게 됩니다.

1/3

rd

 이퀄라이저의 슬라이더 밴드(대역폭)는  다루는 주파수 범위

가 가장 좁아서 매우 정밀합니다. 
때문에 전체 가청 주파수 영역을 커버하기 위해서는 랙 패널 너비
공간을 모두 차지하는 31개의 슬라이더(주파수 밴드)가 필요하며, 
적절하게 조절할 수 있는 시간이 필요합니다. 열악한 공간의 어쿠
스틱, 열악한 스피커반응, 오디오 시스템의 약점 등을 보완하기 위
해 1/3rd옥타브 그래픽 이퀄라이저를 설정할 때, 높은 해상도의 
실시간 오디오 스펙트럼 분석기는 매우 유용한 장비입니다.

2/3rd 옥타브가 1/3

rd

만큼 정밀하지 못한 반면에 신호를 조작하는

데 걸리는 시간을 더욱 단축시켜 줄 수 있습니다. 또한, 보다 많은 
주파수범위를 밴드별 EQ로 운영할 수 있습니다. 2/3rd 옥타브 EQ
는 음악이나 사운드 리인포스먼트 시스템(SR system)의 음향을 더
욱 쉽고 빠르게 조정 할 수 있습니다.

3.

 

Operation and Application Notes

 

l

 

기기의 동작과 EQ에 대한 참고사항

FOR 1/3

RD

 OCTAVE OR A 2/3

RD

 OCTAVE EQUALIZER

Most graphic equalizers divide up the audio frequency range 
into 1/3

RD

 octave or 2/3rds octave pieces. One octave covers 

a 2-to-1 range of frequencies. For example the frequency 
range form 50 to 100 Hz is one octave. The audio frequency 
range covers 10 octaves from 20Hz to 20KHz. If each of the 
ten cotaves is divided into thirds. You get 30pices, or bands, 
of frequency. (The 31 bands on S

TK

 equalizers result from 

including both 20Hz and 20KHz bands on the ends of the 
audio frequency range). A 1/3 octave equalizer means that 3 
bands span 1 octave, while a 3/2 octave equalizer means that 
3 bans span 2 octaves.
Therefore, one band on a 2/3 octave equalizer is twice as 
wide as one band on a 1/3 octave equalizer, So, boosting or 
cutting any band will affect a wider range of frequencies one 
the 2/3 octave equalizer.

A 1/3

RD

 octave equalizer is the most precise because you're 

working with a narrower frequency range per band or slider 
on the equalizer. To cover the entire audio range, you need 31 
bands or sliders, which normally take up the entire width of 
a rack panel, and take some time to adjust properly. A high - 
resolution real time audio spectrum analyzer is a very  useful 
tool when setting up a 1/3

RD

 octave graphic equalizer to 

compensate for poor room acoustics, poor speaker response, 
or the deficiencies of an audio system.

While the 2/3rds octave is not as precise as a 1/3

RD

 it takes 

far less time to equalize a signal with this unit. And allows 
more channels of EQ to be reached. The 2/3rds octave EQ 
allows you to quickly and easily modify a sound for use in 
music, or sound reinforcement.

7

http://stk.com.vn

Summary of Contents for HVQ Series

Page 1: ...1 0 5 0 0 5 1 2 3 4 6 15 12 9 7 6 4 1 2 0 1 4 2 7 9 12 15 6 15 18 11 8 5 1 4 dBu OFF 20 COMP 5 1 RANGE LIMITER RANGE 0 2 4 2 4 7 10 12 dB 12 10 8 15 18 11 8 5 1 4 dBu OFF 20 COMP 5 1 RANGE LIMITER RA...

Page 2: ...on l 3 2 Important Safety Instructions l 4 5 3 Operation and Application Notes l EQ 6 7 4 Panel Descriptions l 8 12 5 Installation Considerations l 13 15 6 System Hookup Diagrams l 16 17 7 Block Diagr...

Page 3: ...cut filter for each channel The products have built in noise reductoin HVQ 215 is optional and on board comp limiter with variable threshold control The 45mm long throw high resolution faders allow pr...

Page 4: ...other 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...

Page 5: ...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 appliance to its...

Page 6: ...the sound system must be properly set up Each component of the sound system should be set at its nominal operating level starting with the first element in the system usually a mixing console Each ele...

Page 7: ...ans span 2 octaves Therefore one band on a 2 3 octave equalizer is twice as wide as one band on a 1 3 octave equalizer So boosting or cutting any band will affect a wider range of frequencies one the...

Page 8: ...Clip 6dB 15dB 18 Input Gain Comp Limiter Threshold Input Gain Comp Limiter Threshold 6 15dB 6 15dB 6 15dB 6 15dB 10 0 10 10 6 3 1 0 3 3 6 9 12 dB 12 9 6 0 3 3 6 9 12 dB 12 9 6 dB dBu 6dB 15dB 18 6 15...

Page 9: ...on due to gain changes caused by individual frequencies 8 Noise Reduction LED HVQ131 HVQ231 ONLY The yellow LED lights when noise reduction circuit is activated via the noise reduction switch 9 EQ Byp...

Page 10: ...6 dB dBu 6dB 15dB 18 6 15dB 6 15dB 6 15dB 6 15dB 10 0 10 10 6 3 1 15 18 11 8 5 0 1 dBu OFF 20 COMP 5 1 RANGE 6 4 3 2 1 0 5 0 0 5 1 2 3 4 6 15 12 9 7 4 1 2 0 1 4 2 7 9 12 15 6 4 3 2 1 0 5 0 0 5 1 2 3 4...

Page 11: ...Standard IEC type power cord connection with integral mains fuse holder equipped with 125mA 250V HVQ231 315mA fast blow fuse for AC input 120V Other country are 160mA 250V Time Lag fuse for AC input...

Page 12: ...r AC Input Consumption 15W 1 2 3 1 2 3 1 2 2 3 3 4 4 5 4 Output Connectors Three types of output connectors are provided for output connections male XLR type connectors 1 4 tip ring sleeve phone jack...

Page 13: ...and 20Kohm unbalanced This makes the HVQ series equalizers audio inputs suitable for use with virtually any low source impedance under 2Kohm Output Cable Configurations The equalizer s output is capab...

Page 14: ...be achieved by turning up the sound system to the feedback point and attenuating the oscillating ringing frequency 1 3rd octave resolution is best for this application Turn the system up to feedback...

Page 15: ...ne of the most useful tools in the sound engineer s bag STK equalizers offer the features and the flexibility to deliver uncompromising quality in the studio A Fix a track that doesn t sound quite rig...

Page 16: ...eduction EQ ByPass Output Level Gain Reduction dB dBu Clip 10 6 3 1 18 10 0 10 20 25 31 5 40 50 63 80 100 125 160 200 250 315 400 500 630 800 1K 1 25K 1 6K 2K 2 5K 3 15K 4K 5K 6 3K 8K 10K 12 5K 16K 20...

Page 17: ...10K 12 5K 16K 20K Equalizer Comp limiter 6dB 15dB 6dB 15dB HVQ 231 VX 4042NU MIXER Graphic Equalizer HVQ 231 CH A CH B 12 12 dB 0 10 15 20 off dBu Input Gain Threshold Range Low Cut Noise Reduction E...

Page 18: ...18 Introduction l 7 Block Diagram l HVQ 215 h t t p s t k c o m v n...

Page 19: ...19 7 Block Diagram l HVQ 131 h t t p s t k c o m v n...

Page 20: ...20 Introduction l 7 Block Diagram l HVQ 231 h t t p s t k c o m v n...

Page 21: ...range 90dB unweighted ref 4dBu 22kHz measurement bandwidth 108dB unweighted THD Noise 0 04 0 02 typical at 4dBu 1kHz 0 05 at 1kHz with 15dB gain reduction Interchannel Crosstalk 80dB 20Hz to 20kHz Fun...

Page 22: ...4dB ref 4dBu 22kHz 112dB 15dB 90dB ref 4dBu 22kHz 108dB THD 0 04 0 02 1KHz 4dBu 0 05 1KHz 15dB 80dB 20Hz 20kHz EQ Recessed 40Hz 18dB Recessed 6dB 15dB 10 0 10 18dBu 4 LED 1 3 6 10dB 4 LED EQ 1 LED 1 L...

Page 23: ...90dB unweighted ref 4dBu 22kHz measurement bandwidth 108dB unweighted THD Noise 0 04 0 02 typical at 4dBu 1kHz 0 05 at 1kHz with 15dB gain reduction Interchannel Crosstalk 80dB 20Hz to 20kHz Noise Red...

Page 24: ...dB range 90dB ref 4dBu 22kHz 108dB THD 0 04 0 02 1kHz 4dBu 0 05 1kHz 15dB 80dB 20Hz 20kHz 20dB EQ Recessed 40Hz 18dB Recessed 6dB 15dB 10 0 10 18dBu 4 LED 0 3 6 10dB 4 LED 1 LED EQ 1 LED 1 LED 1 LED A...

Page 25: ...YEAR 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 i...

Page 26: ...25 b 9 STK 543 15 3 21104 TEL 032 525 1788 1790 FAX 032 525 1784 E mail stkcom stkpro com www stkpro com 1 STK 1 AS STK STK STK Professional Audio FOR YOUR RECORDS 1 A S h t t p s t k c o m v n...

Page 27: ...Note h t t p s t k c o m v n...

Page 28: ...Owner s Manual For The STK HVQ SERIES 31 Band Graphic Equalizer Printed In Korea STK Professional Audio NOV 2018 h t t p s t k c o m v n...

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