background image

STAGE MONITOR EQUALIZATION

IMPORTANT NOTES:

1. This set-up, using the Rane microphone, provides the most expedient method to optimize stage monitor sound quality

and reduce feedback problems. Feedback induced by specific stage mic/monitor speaker coupling can also be attenuated by
leaving the stage mic turned up and running up the pink noise level through the monitor speaker until feedback occurs.
Attenuate each feedback frequency, as indicated by the analyzer display, until the mic/monitor combination feeds back at

two or more frequencies simultaneously. Usually the final EQ setting will be a compromise between a good monitor sound
that doesn’t get as loud, or a not-so-good monitor sound that gets louder before feedback,

2. The run between the RE 27 and the monitor amp should be balanced whenever possible.

3. Place the Rane microphone at eye level of the performer and about six inches off to one side of the stage microphone,

in line of sight to the monitor speaker. If the stage microphone is directly between the Rane mic and monitor speaker

(blocking line of sight), some high frequencies will be blocked giving a false reading on the analyzer display.

4. If you are running more than one monitor from a single equalizer, test each monitor location by running up pink noise

until feedback occurs. The monitor which feeds back soonest should be used for the overall EQ adjustments using pink noise.

5. If maximum SPL before feedback is most important, use the stage mic only. If your mixer has a send/receive loop for

each input, temporarily patch the send from the stage mic mixer input to the RE 27 EQ INPUT, and patch the PINK NOISE
OUTPUT from the RE 27 to the receive. This arrangement allows the analyzer to look at the specific relationship between
each stage microphone/speaker combination. Since both the microphone and stage monitor speaker exhibit their own

individual feedback tendencies, the interaction between the two can cause pronounced feedback problems. This configura-
tion allows you to flatten or “normalize” this interaction without actually getting to feedback levels. It should be noted that
this testing procedure favors maximum SPL before feedback and not necessarily optimum monitor sound quality. After the
equalizer curve is set, reconnect the system as shown above (without the Pink Noise connection). This configuration can also

be used for main speaker equalization to optimize system response for a specific microphone used throughout the system,

such as for choir, orchestral or big band situations where all program material is picked up through microphones of the same
make and model. After setting the equalizer curve, make the final output connection for the equalizer to the main amp(s) and
speakers instead of the monitor system as shown

6. Do not attempt to plug a regular microphone directly into the RTA MIC INPUT. See RaneNote 104 regarding use of

other microphones with the RE 27.

Summary of Contents for RE 27

Page 1: ...rument 6 MONITORING PROGRAM WITH ANALYZER DISPLAY When the front panel microphone is unplugged the analyzer display automatically monitors the output of the equalizer section Use this feature to ident...

Page 2: ...cy centers 9 CURVE SELECT SWITCH The NORMAL position yields a flat response when all LEDs are green The HOUSE CURVE changes the response of the display such that the EQ sliders between 400 Hz and 1 6...

Page 3: ...gram below for balanced operation 4 GROUND LIFT SWITCH This switch provides the ability to separate chassis ground and signal ground Normally this switch should be in the LIFT position If you are temp...

Page 4: ...7 mic should be in line with the on axis phase response of the speaker stack perpendicular to the drivers as shown below 5 ANALYZER SETTINGS Select either NORMAL or HOUSE CURVE on the RE 27 display NO...

Page 5: ...ance at the display When this happens keep watching the display the last red LED to go off contains the exact feedback frequency it was the first LED on too but you probably didn t see it Adjust that...

Page 6: ...input and pink noise output MAIN SPEAKER EQUALIZATION IMPORTANTNOTES 1 See page 3 or Rane Note 110 for connector wiring 2 To drive both left and right amplifier channels from a single RE 27 Output use...

Page 7: ...the overall EQ adjustments using pink noise 5 If maximum SPL before feedback is most important use the stage mic only If your mixer has a send receive loop for each input temporarily patch the send f...

Page 8: ...he AC mains disconnect device and must remain readily operable To completely disconnect this apparatus from the AC mains disconnect the power supply cord plug from the AC receptacle 16 This apparatus...

Reviews: