F1222 Manual
(3.0E)
Page 5 of 8
Operation with D12
INPUT A
OUT A
2-Way
SenseDrive
OUT B
2-Way
AMP B
AMP A
D12 Input/Output routing
2-Way Active mode
Selecting "2-Way Active" and F1222 mode enables up to two
F1222 cabinets to be driven actively by the D12 amplifier.
The input signal is fed to INPUT A, while the input signal is routed
(linked) to INPUT B internally.
Controller settings
For acoustic adjustment the settings CUT, HFC and CPL can be
selected.
CUT
Set to CUT, the frequency and phase response of the F1222
loudspeaker is modified for operation with d&b active subwoofers.
HFC circuit
Set to HFC (High Frequency Compensation), the level above 10 kHz
is raised to give a flat response up to 17 kHz.
CPL circuit
Frequency response of CPL circuit
The CPL (Coupling) circuit compensates for coupling effects
between the cabinets when building closely coupled arrays. CPL
begins gradually at 1 kHz, with maximum attenuation below
250 Hz, providing a balanced frequency response when the F1222
cabinet is used in arrays of two or more. The function of the CPL
circuit in the D12 amplifier is shown in the diagram opposite and
can be set in dB attenuation values between –9 and 0, or a positive
CPL value which creates an adjustable low frequency boost around
65 Hz (0 to +5 dB).
Summary of Contents for F1222
Page 1: ...F1222 Manual 3 0E ...
