STK Professional Audio SP-112APM Owner'S Manual Download Page 22

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10.

 

Placement Tips & Hum

 

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스피커 배치와 험 잡음

스피커 배치 도움말

*라우드 스피커를 실내의 코너에 위치시키는 것을 피하십시오. 이
는 저주파 출력을 증가시키고 음을 혼탁하게 할 수 있습니다.

*벽에 붙여서 위치시키는 것을 피하십시오.
이는 코너에 위치시키는 것 이상으로 저주파 출력을 증가시킵니
다. 그러나 저주파 출력을 높이고 싶으시다면 이는 좋은 방법이 될 
수 있습니다.

*액티브 스피커를 홀로우(속이 비어 있는) 스테이지 바닥에 직접 
두지 마십시오. 홀로우 스테이지는 일정 주파수에서 방의 주파수 
응답에 피크나 딥을 야기하는 공진을 일으킵니다. 액티브 스피커
는 튼튼한 테이블이나 삼각 스탠드에 두는 것이 낫습니다.

*고음 드라이버가 청취하는 사람의 귀의 높이 보다 60~120cm 정
도 높게 되도록 스피커를 위치시키십시오. 
고주파는 높은 방향성을 지니고 있으며 저주파보다 쉽게 흡수되
는 경향이 있습니다. 액티브 스피커로부터 청취자에게로 직접적인 
음향을 제공하기 위해 사운드 시스템의 전체적인 선명함과 명확
성을 늘려주십시오. 

*체육관이나 강단 같은 반향성이 높은 공간은 사운드 시스템의 명
료성이 현저히 떨어집니다. 
단단한 벽과 천장 그리고 바닥의 복합적인 반사효과는 음향을 매
우 안 좋게 합니다. 그런 상황에서는 바닥에 카페트를 깔거나, 큰 
유리창을 가리기 위해 커튼을 닫는 등 소리를 흡수하는 물질을 벽
에 설치하여 음향의 반사를 최소화하도록 해보십시오.

*하지만 대부분의 경우 이런 방편을 실질적으로 가능하지 않습니
다. 그럼 어떻게 해야 할까요?
사운드 시스템의 음량을 더 키우면 반향효과도 함께 커지기 때문
에 효과가 없습니다.
가장 좋은 방법은 청취자에게 음향이 직접 도달할 수 있도록 적절
한 유효 청취 거리를 유지하는 것입니다.
스피커에서 유효 청취거리 밖으로 멀리 떨어지면 떨어질수록 반
향효과가 현저히 증가할 것입니다.

*청중의 뒤쪽에 더 가깝도록 전략적으로 위치시킨 스피커들을 더 
사용하십시오.
앞쪽 스피커와 뒤쪽 스피커와의 거리가 30미터 이상이라면, 딜레
이 프로세서를 사용하여 음향의 시차를 없애주십시오. (상온에서
의 음속은 약 340m/s이므로 거리가 30미터 이상이라면 약 0.1초 정
도 음향의 시차가 생깁니다.)

Placement Tips

*Avoid placing loudspeaker into the corners of a room.

This increases the low-frequency output and can cause the 

sound to be muddy and indistinct.

*Avoid placing loudspeakers against a wall.

This ,too, increases the low frequency output, through not 

as much as corner placement. However, if you do need to 

reinforce the low frequencies, this is a good way to do it.

*Avoid placing the active speakers directly on a hollow stage 

floor. A hollow stage can resonate at certain frequencies, 
causing peaks and dips in the frequency response of the 

room. It's better to place the active speakers on a sturdy table 
or tripod stands.

*Position the active speakers so the high frequency drivers 

are two to four feet above ear level for the audience(make 

allowances for a standing/dancing in the aisles audience). 
High frequencies are highly directional and tend to be 
absorbed much easier than lower frequencies.

By providing direct line-of-sight from the active speakers to 
the audience, you increase the overall brightness
and intelligibility of the wound system.

*High reverberant rooms, like many gymnasiums and 
auditoriums, are a nightmare for sound system intelligibility. 

Multiple reflections off the hard walls, ceiling, and floor play 

havoc with the sound. 
Depending on the situation, you may be able to take some 

steps to minimize the reflections, such as putting carpeting 
on the floors, closing draperies to cover large glass windows, 

or hanging tapestries or other materials on the walls to 
absorb some of the sound. 

*However, in most cases, these remedies are not possible or 
practical. So what do you do?
Making the sound system louder generally doesn't work 

because the reflections become louder, too.

The best approach is to provide as much direct sound 
coverage to the audience as possible.
The farther away you are from the speaker, the more 

prominent will be the reflected sound.

*Use more speakers strategically placed so they are closer to 
the back of the audience.
If the distance between the front and back speaker is more 

than about 100 feet, you should use a delay processor to 

time-align the sound. (Since sound travels about foot per 

millisecond, it takes about 1/10 of a second to travel 100 feet)

Placement Tips & Hum

스피커 배치 도움말과 험 현상에 대해서

Summary of Contents for SP-112APM

Page 1: ...GD Series Active Powered Speaker Systems OWNER S MANUAL SP 155AP SP 156AP SP 1563AP SP 112APM SP 115APM SP K615AP SP 158AP SP 1812AP...

Page 2: ...full ranges and sub woofer systems are family dimension that very well matched for using top and bottom together or any other configurations STK new GD series speaker systems are required easy adjustm...

Page 3: ...5 Water and Moisture This appliance should not be used near water for example near a bathtub sink laundry tub in a wet basement near a swimming pool etc 6 Heat This appliance should be situated away...

Page 4: ...or pinched by items placed upon or against them paying particular attention to cords at plugs convenience receptacles and the point where they exit from the appliance 11 Damage Requiring Service Unpl...

Page 5: ...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 6: ...5 b 3 STK 2 396 43 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...

Page 7: ...ands Position the stand so that the legs do not present a trip hazard Route cables so that performers production crew and audience will not trip and topple the speakers over Inspect the stand or pole...

Page 8: ...an 36kg 80Ibs of weight be placed on a speaker pole that is mounted to all of GD series sub woofer speakers STK GD 36kg 80Ibs 4 Important precautions l GD Full Range Sub Stack with Pole Mount GD Serie...

Page 9: ...he manner specified by the Professional Engineer Improper installation may result in damage injury or death Inspection Maintenance Suspension systems are comprised of mechanical devices and as such th...

Page 10: ...K all Series of speakers utilizing M8 attachment points will be maintained with a safety factor of 5 1 provided no more than 50kg 110Ibs from 2 points equally loaded or no more than 25kg 55lbs maximum...

Page 11: ...ables so that performers production crew and audience members will not trip over the cables Secure cables with wire ties or tape whenever possible See below Figures for optimal coverage areas in front...

Page 12: ...ge pattern Figure 3 c 4 Reconnect the wires that attach the compression driver to the input panel reverse of Figure b The red wire corresponds to the positive terminal and the gray or black wire corre...

Page 13: ...the last time you used it was with a microphone and now you want connect a line level source 1 2 Connect the AC power cord from a grounded line receptacle to MAINS IN 2 AC 3 Connect a XLR TRS or RCA...

Page 14: ...563AP LED indicates when distortion is audible at the Low frequency power Amplifier 7 HF peak SP 155AP 1563AP LED indicate when coming peak output level for high and mid SP 1563AP frequency power Ampl...

Page 15: ...turn the active speakers on and switch down to turn it off Make sure the level control is down before you turn it on 13 Cooling FAN Note Do not obstruct air flow to this opening 4 SP 156AP 5 SP 156AP...

Page 16: ...overall tonal contouring and acoustic feedback 7 Master level Control Adjust the master output level and signal to send internal power amplifier 8 Peak Indicator LED When the amplifier output approach...

Page 17: ...ange Control Variable controled crossover frequency determining where the subwoofer frequency band terminates and the low frequency band begins 8 LCF Select Switch The Low cut filter rolls of signal b...

Page 18: ...to the Internal throughout connector and send signal to the external output Amps though high pass filter 6 External channel input jack This input is summed with the Internal channel input and send to...

Page 19: ...eakon NL 4 connector connects the External speaker system by selected mode 12 Crossover select The SP 158AP and SP 1812AP can be choice crossover frequency 120Hz or 90Hz NOTE During the power on statu...

Page 20: ...f instruments with unbalanced outputs to balanced XLR inputs TS unbalanced 1 4 inch phone jack to XLR M This cable is electrically identical to TRS unbalanced 1 4 inch phone and maybe used interchange...

Page 21: ...XLR F to XLR M GD GD GD TRS 1 4 to XLR M 1 4 XLR TRS 1 4 to XLR M XLR TS 1 4 to XLR M TRS 1 4 XLR M to RCA DJ TRS 1 4 to RCA TRS 1 4 to 1 8 TRS MP3 CD player GD XLR F to XLR M 20 9 Cables Connectors l...

Page 22: ...you increase the overall brightness and intelligibility of the wound system High reverberant rooms like many gymnasiums and auditoriums are a nightmare for sound system intelligibility Multiple reflec...

Page 23: ...nbalanced to balanced interface between the devices and exacerbated by the fact that most consumer audio equipment have a two wire line cord without the third pin safety ground Use an interconnect cab...

Page 24: ...em Hookup Diagram l Using Full Range Systems as Monitors SP 112APM or SP 115APM SP 112APM SP 115APM T5AL 250V 8A 250V T5AL 250V 8A 250V SP 112APM or SP 115APM SP 112APM or SP 115APM VOCAL MICROPHONE I...

Page 25: ...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 0 15...

Page 26: ...TURN SLEEVE TIP RING SLEEVE SEND RETURN SLEEVE TIP RING SLEEVE SEND RETURN SLEEVE TIP RING SLEEVE SEND RETURN SLEEVE TIP RING SLEEVE SEND RETURN SLEEVE TIP RING SLEEVE SEND RETURN SLEEVE TIP RING SLEE...

Page 27: ...26 12 Block Diagram l SP 112APM SP 115APM...

Page 28: ...27 12 Block Diagram l SP 155AP...

Page 29: ...28 Introduction l 12 Block Diagram l SP 156AP...

Page 30: ...Introduction l 29 12 Block Diagram l SP 1563AP 550W...

Page 31: ...30 Introduction l 12 Block Diagram l SP K615AP VARIABLE FREQUENCY CONTROL LINKWITZ RILEY FILTERS...

Page 32: ...Introduction l 31 12 Block Diagram l SP 158AP 45Hz HPF 45Hz HPF 4dBu...

Page 33: ...32 Introduction l 12 Block Diagram l SP 1812AP 45Hz HPF 45Hz HPF 4dBu SWITCHING POWER SUPPLY SWITCHING POWER SUPPLY...

Page 34: ...4 ohm 450W400w 2 INT EXT 8 ohm 390W390w 2 INT EXT 8 ohm 250W250w 2 INT EXT Frequency Response 20Hz 40kHz 20Hz 40kHz 10Hz 35kHz THD 20Hz 30 kHz 0 05 0 08 0 05 Hum Noise 105dB 103dB 80dB Input Sensitivi...

Page 35: ...izontal 4 8 ohms 4 8 ohms Normal Dispersion degrees 6dB Model 8 ohm 4 ohm 4 ohm 4 ohm 4 ohm 8 ohm 8 ohm 8 ohm 8 ohm Frequency Response 20Hz 30kHz 20Hz 30kHz 20Hz 40kHz 20Hz 30kHz 20Hz 30kHz THD 20Hz 3...

Page 36: ...ement High Level AV Playback Night Club House of Worship High Output Full Range Playback Small to Medium Sized Portable PA Touring Theatres Installation Front of House Speech Concert Under Balcony Sma...

Page 37: ...36 14 Application Chart l DIMENSION for STK Full Range Sub Stack Systems l STK 510 510 595 1...

Page 38: ...Note 37...

Page 39: ...Note 38...

Page 40: ...Owner s Manual for The STK GD Series Active Powered Speaker Systems Printed In Korea STK Professional Audio March 2012...

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