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In some venues a column of ﬂown subwoofers is appropriate. As stated previously, two-high ﬂown subwoofer

columns are the same height as three-high KF700 array module columns. These two-high subwoofer columns can

be used in smaller venues and ﬂown on the offstage side of the cluster, close to the venue wall. This conﬁguration

will provide similar performance to ﬂown rows while once again maintaining clear sightlines. Again, SB750

columns should not be inserted between KF700 columns.

Flying subs as a column

Offstage

SB750

KF700

Series

module

KF700

Series

module

KF700

Series

module

KF700

Series

module

KF700

Series

module

KF700

Series

module

Onstage

Dipolar sub array w/ beam steering

6.5 msec delay
on bottom row

3x KF750

1x SB750

1x KF755

IV – Using KF755’s for Upﬁll Coverage

Many larger venues (medium and large arenas) require upﬁll in order to reach the farthest seating. This seating not

only requires increased output to overcome inverse square loss relative to the cluster, but also requires signiﬁcant

high frequency emphasis in order to overcome the attenuation caused by air absorption. KF755’s are designed such

that when inverted and processed independently as long throw elements, they meet both criteria.

It should be noted that the KF755, though commonly thought of as a dedicated downﬁll module, is a very high Q

device. It exhibits the same pattern control as a KF750, but utilizes asymmetrical horns to project this coverage at

an angle relative to the front of the enclosure. Consequently, KF755’s can readily double as long throw elements.

Содержание KF750 Series

Страница 1: ...T h e L a w s o f P h y s i c s T h e A r t o f L i s t e n i n g E A W s K F 7 0 0 S e r i e s T o u r i n g U s a g e G u i d e...

Страница 2: ......

Страница 3: ...act as a single unit Developing and integrating the various loudspeaker modules in the KF850 KF860 and KF900 Series has led us to new ways of looking at array building that provide even coverage throu...

Страница 4: ...ing a true continuum of success Our experience has led us to develop a ve step approach to designing the appropriate array for any venue 1 D E S I G N A R R A Y C O L U M N S Design a single array col...

Страница 5: ...mize destructive interaction between array modules and produce even coverage in three space three dimensions AS3D requires that the array ampli cation be zoned in horizontal rows to permit implementat...

Страница 6: ...cluster It is alright if someone seated house right sees a handle on the house left cluster The KF700 Series loudspeakers provide a 30 horizontal pat tern that drops off very rapidly outside of this n...

Страница 7: ...in uenced by the edge events That is an impulse response measurement reveals two distinct upper mid frequency arrivals coming from the physical edges of the line source i e the top of the top module...

Страница 8: ...T h e L a w s o f P h y s i c s T h e A r t o f L i s t e n i n g E A W s K F 7 0 0 S e r i e s T o u r i n g U s a g e G u i d e INTEGRATING MODULES INTO AN ARRAY COLUMN...

Страница 9: ...riate processing and AS3D techniques will provide even coverage to the front of the venue without creating interference issues in the transition area between KF755 and KF750 coverage Dedicated down ll...

Страница 10: ...rent arrival in order to achieve appropriate summation throughout a venue IIIa GroundstackingSB750 s Many users will choose to use SB750 s in a traditional groundstacked con guration In addition to pr...

Страница 11: ...apparent impact at great distances Additional processing also allows for subwoofer beam steering Unlike conventional ground stacked subwoofers own subwoofers lose the increased output bene t provided...

Страница 12: ...ronounced lobes above and below the cluster This limits the ability to project sub frequency information upward to the far reaches of the venue signi cantly reduces the subwoofer output in the front r...

Страница 13: ...steering 6 5 msec delay on bottom row 3x KF750 1x SB750 1x SB750 1x KF755 IV UsingKF755 sforUp llCoverage Many larger venues medium and large arenas require up ll in order to reach the farthest seati...

Страница 14: ...so as to sum with the energy from KF750 column 2 rows of upfill KF755 s in a large arena 1 237 msec 1 756 msec delay differential A B C Arrival difference from A to B 1 237 msec 2x KF755 inverted 4x...

Страница 15: ...h more delay for the top row and two with less for the second row A delay unit must be carefully chosen such that the latency delay through the unit does not exceed the desired delay for the second ro...

Страница 16: ...is important to remember the visible handle rule of thumb Because the KF700 Series pattern edge exhibits dramatic attenuation the clusters can be own much closer to on stage without the feedback prob...

Страница 17: ...T h e L a w s o f P h y s i c s T h e A r t o f L i s t e n i n g E A W s K F 7 0 0 S e r i e s T o u r i n g U s a g e G u i d e AS3D ARRAY SHADING IN THREE DIMENSIONS...

Страница 18: ...tly linked to the ends of the line source If the array is short these arrivals occur close together In larger arrays the arrivals are further apart These dual arrivals create problems in areas that li...

Страница 19: ...of listening positions For the sake of legibility only three locations are shown 0 10 20 These locations are illustrated in Figure 2 Array Response Locations At 0 10 and 20 these are the listening loc...

Страница 20: ...is generated by the same computer model referenced above By implementing these simple techniques effective and extremely consistent array performance can be provided using the simple dead hung array T...

Страница 21: ...l array shading as throw distances should be relatively consistent However in venues that are particularly long or particularly narrow output levels on the short throw sides may become excessive This...

Страница 22: ...ddress the increased vertical angle associated with closer proximity to the array In an extreme situation increase the horizontal area of attenuated coverage by unplugging the gap box in the second co...

Страница 23: ...T h e L a w s o f P h y s i c s T h e A r t o f L i s t e n i n g E A W s K F 7 0 0 S e r i e s T o u r i n g U s a g e G u i d e DSP SETTINGS...

Страница 24: ...ssover 2 way crossover 2 way crossover 2 way crossover 1 Band PEQ Gain Delay Lim Comp 4 Band PEQ Gain Delay Lim Comp 4 Band PEQ Gain Delay Lim Comp Gain Delay Gain Delay Delay Delay Gain Delay Gain De...

Страница 25: ...14Hz 24dBButterworth PEQ Frequency Boost Cut Q USP 2Q Bandwidth EQ1 500Hz 8 5dB 2 2 0 99 0 52 EQ2 874Hz 5 5dB 10 6 84 0 10 EQ3 1k26Hz 3 5dB 3 6 2 49 0 28 HF GAIN 2 0dB DELAY 1 102msec HPF 1k68Hz 24dBB...

Страница 26: ...354Hz 24dBLink Riley LPF 1k47Hz 24dBButterworth PEQ Frequency Boost Cut Q USP 2Q Bandwidth EQ1 490Hz 8 0dB 2 1 1 02 0 53 EQ2 874Hz 5 5dB 10 6 84 0 10 EQ3 1k26Hz 3 5dB 3 6 2 49 0 28 HF GAIN 2 0dB DELA...

Страница 27: ...Riley LPF 1k47Hz 24dBButterworth PEQ Frequency Boost Cut Q USP 2Q Bandwidth EQ1 490Hz 8 0dB 2 1 1 02 0 53 EQ2 874Hz 5 5dB 10 6 84 0 10 EQ3 1k26Hz 3 5dB 3 6 2 49 0 28 HF GAIN 2 0dB DELAY 1 102msec HPF...

Страница 28: ...4Hz 24dBLink Riley LPF 1k47Hz 24dBButterworth PEQ Frequency Boost Cut Q USP 2Q Bandwidth EQ1 490Hz 8 0dB 2 1 1 02 0 53 EQ2 874Hz 5 5dB 10 6 84 0 10 EQ3 1k26Hz 3 5dB 3 6 2 49 0 28 HF GAIN 2 0dB DELAY 1...

Страница 29: ...earenaswherethebalcony isabovethelevelofthearray ThedelayofasinglerowofKF755up ll modulesiscalibratedtomeettheacoustic originofanarraycomprising3 high KF750 soverasingleKF755down ll module Three Over...

Страница 30: ...quire onlyminoradjustmentdependingonhow theyaredeployed PleaseseeSection2of thisGuideformoreinformationon ying orgroundstackingSB750subwoofers SB750DSPSETTINGS LF GAIN 6 0dB DELAY 0 000msec HPF 35 14H...

Страница 31: ...web www eaw com EUROPE EAW International Ltd tel 44 1494 539090 fax 44 1494 539091 T h e L a w s o f P h y s i c s T h e A r t o f L i s t e n i n g EAW is the worldwide technological and market leade...

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