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Onyx 1220i
Appendix F: Modifications
The following modifications can be carried out on the
Onyx 1220i by an authorized service center. Authorized
service centers may be found online at:
www.mackie.com/scripts/service_centers/search.asp
Please contact our technical support department if you
are having trouble finding an authorized service center
in your area.
The block diagram on page 32 shows these modifica-
tions as dotted lines in the channel signal flow.
Modifications: Post-Insert FireWire Sends
The pre-EQ channel FireWire sends are pre-insert,
but the circuit board can be modified so that they are
post-insert instead.
For example, this allows for the use of an external
processor on the mic signal, sending the result to the
FireWire, while still being pre-EQ.
Modifications: Post-Fader FireWire Sends
The post-EQ channel FireWire sends are pre-fader,
but the circuit board can be modified so that they are
post-fader instead.
This allows the channel level to control the level of
the FireWire sends.
Modification: Pre-EQ Aux Sends
The pre-fader aux sends are post-EQ, so they are
affected by the channel EQ controls. The circuit board
can be modified so the pre-fader aux sends are pre-EQ
instead of post-EQ.
For example, your stage monitors will not be affected
by any channel EQ adjustments.
