Rane RE 27 Bedienungsanleitung PDF herunterladen (Seite 13)

10. MONITORING PROGRAM MATERIAL FOR FEEDBACK USING THE DISPLAY: Once the pink noise

test is completed, switch off the pink noise on the RE 27 or RE 14 and unplug the Rane test microphone

from the front panel jack. When the mic is unplugged, the display is automatically switched to monitor

the output of the equalizer section (Channel 2 on the RE 14). Adjust the RTA Level control so that an

occasional green LED blinks on during the performance peaks, but no red LEDs come on: you should be in

the ±3 dB mode on the display. If feedback occurs, one or more red LEDs will light showing the general

9. USING THE RANE ANALYZER WITH OTHER EQUALIZER CHANNELS: The analyzer section of the RE

27 or RE 14 will respond to whatever program the test microphone picks up. Therefore, the display can

be used to adjust any equalizer channel which controls the pink noise through the speaker(s). For

example, suppose you are running the RE 14 for left and right main speakers. Plug the pink noise output

into the mixer, turn up channel 2 on the RE 14 and turn off channel 1, so that only one speaker emits pink

noise. Use the analyzer to adjust the channel 2 sliders. When completed, turn DOWN channel 2 and turn

up channel 1 on the RE 14: now the other speaker should be emitting pink noise. Use the analyzer to

adjust the channel 1 sliders (don’t forget to re-position the test microphone). This same procedure

applies to any other equalizer in the system: simply run pink noise through the desired equalizer and use

the analyzer/microphone combination to adjust that equalizer.

8. FINAL EQUALIZER ADJUSTMENTS: Once the RE 27 or RE 14 is all “greened out”, you’re done with the

pink noise alignment test Now the speakers are properly coupled to the specific room and the overall

system response is accurately aligned. This alone will make a great improvement in most systems, but

DON’T STOP AT FLAT necessarily. Now that the RE 27 or RE 14 has given you a consistent starting point,

feel free to make further slider adjustments during the performance or sound check to enhance overall

sound quality: fatten the bass, smoothen the mids or sweeten the highs to taste. You will probably find

that these adjustments will be consistently set above or below the pink noise test settings the same

amount at each performance; make a note of these further adjustments to save future tweeking during

performances. For example, you note the pink noise settings and find later that you like to have 3 dB

more boost at 63 Hz for more low-end punch during the performance. Next time, green out the analyzer

during the pink noise test (get all LEDs green before making any further adjustment), then immediately

bump up the 63 Hz slider 3 dB as indicated by the front panel calibrations so that you’re tuned up before

the show starts (slick, no?). The constant-Q sliders will assure accurate adjustments from any slider

position.

If you can’t get one or more green LEDs lit with their sliders fully boosted or cut, make a slight adjustment

in the pink noise volume or RTA Level control to get these bands in the green. Then readjust the

remaining sliders. You will also notice that adjusting one slider may affect the LED readings on the

adjacent bands: this is due to the presence of frequencies half-way between the two bands, which will be

affected by both sliders. Not to worry: simply nudge the adjacent slider until the green LED lights up

again.

7. EQUALIZER SLIDER ADJUSTMENTS: Now adjust each slider up or down as necessary until the green

LED above it is lit; if the red is lit, move the slider down until green comes on. If yellow is lit, move the

slider up to obtain green.

6. INITIAL SYSTEM ALIGNMENT: Before using the equalizer for adjustment, use the analyzer to align

other equipment in the system (EQ should always be a LAST resort after you’ve corrected response

problems everywhere else). With all EQ sliders flat (centered) adjust the electronic crossover

frequencies and level controls (if used), passive crossover controls, speaker placement and alignment,

etc. to get as many green LEDs lit as possible on the display. Only after this is done should you use the

equalizer sliders to flatten the system (see next step).

Now select either the +3 dB or the ±1 dB Window on the analyzer. We recommend starting with the

+3 dB setting, then switching to the ±1 dB mode for fine-tuning frequencies above 400 or 500 Hz. The

crest factor (peak response) of true pink noise causes considerable LED flutter in the ±1 dB mode below

about 500 Hz, thus it is more expedient to use the ±3 dB setting for these frequencies.

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