D&B E9 Manual - Page 6

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Fig. 5: Controls on E9

controller module

Fig. 6: E9 isobar diagrams

E9 Manual

Operation with P1200A

Up to two E9 cabinets can be driven by each P1200A power amplifier

channel fitted with an E9 controller module.

Fitting one E9 and one subwoofer controller module allows a single

mainframe to drive two E9 cabinets and two active subwoofer cabinets.

All cabinets can be linked together locally and fed by a single 4-wire

cable from either mainframe output connector.

The CUT setting is available. The characteristics of the CUT setting are

explained in the previous section

Controller settings".

Standard setting

If neither the CUT switch nor the BX switch is selected, the module is

configured for use with E9 cabinets as stand alone system without any

subwoofers.

BX switch and indicator

When the E9 is used with the passive E15-BX subwoofer, i.e. E9 and

E15-BX are linked to the same amplifier output, the BX switch should be

selected. The LF level - boosted by the bass extension cabinet - is then

attenuated by 3 dB, thereby increasing headroom at bass frequencies.

SUB (CUT and BX both selected)

Selecting the CUT and BX switches activates a lowpass filter. The module

now transmits frequencies from 50 to 110 Hz only, allowing the d&b

E15-BX to be driven as an active subwoofer.

Important: The E9 controller module drives EP5 pins 1/2 (NL4: pins

1+/1–). Therefore the SUB setting is not suitable for driving d&b active

subwoofer cabinets.

The diagrams below show dispersion angle vs frequency plotted using

lines of equal sound pressure (isobars) at –6 dB and –12 dB. The

nominal 90° horizontal dispersion is maintained from 20 kHz down to

900 Hz.

(3.1 EN)

"Operation with D6 or D12 -

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