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Line curvature, or splay between cabinets
Splaying the line will tend to require more level increase from the tweeters, and some
more cut EQ at 1.8 kHz.
A uniform splay of 2.5 degrees between cabinets for an 8 cabinet array would need
approximately 2 dB of tweeter boost, and 0.5 dB of 12” woofer level increase, relative
to a subwoofer level. A uniform splay of 5 degrees per cabinet for an 8 cabinet array
would require approximately 5 dB of tweeter level boost, and approx. 1 dB of 12”
woofer level increase, relative to a subwoofer.
Complete processor settings for the recommended 2.5 degree continuous
curvature with 6 Versarray™ 112 cabinets and one Versarray™ 218 Sub:
Front End EQ (before the crossover section) = PEQ –4.0 dB @ 2k, bw= 0.7 (or use
1/3 octave band 2 kHz set to –2.5 dB AND 1/3 octave band 1.6 kHz set to –2 dB)
Infrasonic filtering: 24 dB/oct. LR @ 34 Hz)
Crossover settings: Woofer= 24 dB/oct. LR @ 2.0 kHz, Tweeter= 24 dB/oct. Bessel
@ 3.0 kHz, Woofer Polarity Normal, Tweeter Polarity Normal
EQ after crossover:
Woofer EQ = PEQ +1.5 dB @ 560 Hz, bw=0.5; PEQ -3.5 dB @ 850 Hz, bw=0.5
PEQ +3dB @ 115 Hz, bw= 2; PEQ –1.5 dB @ 2.2 kHz, bw=.7;
PEQ –2 dB @ 700 Hz, bw=3.0 Woofer Delay = 0.0 ms (none)
Tweeter EQ: PEQ –3 dB @ 2.7 kHz, bw= 0.7; PEQ +2.5 dB @ 4.6 kHz, bw= 1.0;
PEQ +3.5 dB @ 16.5 kHz, bw=1.0 Tweeter Delay = 0.0 ms (none)
Sub to Woofer Crossover: Sub= 24 dB/oct. LR @ 125Hz, Woofer= 24 dB/oct LR @
100Hz, Sub Polarity Normal, Woofer Polarity Normal
Sub EQ: PEQ +4.0 dB @ 50 Hz, bw= 0.7; PEQ -2.5 dB @ 100 Hz, bw= 0.5
Level Settings (for same model of power amp, with all channels set to the same
voltage gain): One Versarray
™ 218 Sub = +4 dB
Versarray™ 112: Woofer= 0.0 dB, Tweeter= +8.5 dB (for ribbons wired 16 ohms)
SPECIAL NOTE: Versarray™ 218 Sub is in 4 ohm mode (woofers paralleled).
If the Versarray
™ 218 Sub woofers are driven separately, using an amp with the
same gain as all the other amps, then drive level does not increase.