The horizontal pattern also features “soft shoulders” that provide consistent frequency response to well beyond the nominal -6 dB points. These soft shoulders can provide up to 150° of “usable” horizontal coverage, albeit at somewhat reduced level. This off-axis performance also provides good acoustic integration with side-fill arrays. In some cases, these shoulders may be sufficient for side-fill purposes.
4.2.4KF730 Series as Side-fill Arrays
KF730 side fill arrays can be hung adjacent to the mains, extending the coverage to over 180° for wrap-around audience coverage.
4.3GROUND STACKING
Normally, a ground-stacked KF730 main array is used where suspension is not possible, too difficult, or too time consuming. Additional uses are as stage side fills and audience front fill.
Both KF730s and SB730s may be ground-stacked alone or in combination. In combination, always stack the KF730s on top of the SB730s. The recommended minimum and maximum array quantities are:
Array | Min | Max |
KF730 alone | 2 | 6 |
SB730 alone | 1 | 4 |
KF730 / SB730 | 2/1 | 6 / 4 |
WARNING: Ground-stacked arrays, especially the maximum recommended arrays, requires assembly by personnel qualified to ensure adequate stability from tip over for the particular application. See Section 6.8 for correct array assembly. Mechanical assistance will be required to lift and position enclosures for arrays taller than approximately 5 feet.
4.4SUBWOOFERS
4.4.1General Considerations
Although the impressive low frequency performance of KF730 Series arrays allows them to be used without subwoofers for some events, subwoofers will normally be used for live musical performances. The recommended subwoofer is EAW’s SB730, specifically designed to complement KF730 line arrays.
NOTE: Bass performance is often highly program or venue-dependent, as well as subjective as to quantity and quality. For this reason the type, quantity, and disposition of subwoofers may vary considerably with the application. The quantity recommendations below are for general purposes, providing a balanced system for most music applications. Quantities may need to be adjusted up or down for specific situations.
4.4.2SB730 Subwoofers
SB730 subwoofers are designed to complement the KF730 loudspeakers to both extend the low frequency response and provide more output for the upper low frequencies. The SB730 subwoofers may either be ground stacked, flown as part of a KF730 array, or flown separately alongside a KF730 array.
A general recommendation is to use KF730s and SB730s in a ratio of three KF730s to two SB730s.
4.4.3Suspending SB730 Subwoofers
The SB730 enclosure rigging is designed to directly couple to a KF730 Fly-Bar and KF730 enclosures. As such, the SB730 can be rigged seamlessly with KF730s.
