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IV. OPERATING METHODS

Since the RE 27 and RE 14 feature a unique form of realtime analyzer, we highly recommend that you

read through this section before performing an alignment with pink noise. If you’ve never used an

analyzer before, use the step-by-step procedure on your first occasion--you’ll be delighted at how simple

it really is. For those more experienced we recommend a quick read-through of the Quickie Summary
section, which contains a few tips that could save you trial and error.

QUICKIE SUMMARY

1. FLAT IS NOT BEAUTIFUL: 

Equalizers have two basic purposes: to correct and enhance. The Rane

analyzers will allow you to accurately 

correct 

system response to each location, a task very difficult to do

by ear. Once this is quickly done, then adjust for further sound quality 

enhancement 

by ear; only rarely

will a system be left in a ”flat” response condition.

2. USE MORE THAN ONE TEST MICROPHONE LOCATION: 

Speaker dispersion characteristics vary

greatly, from beamy highs to boomy bass traps. While performing the pink noise test, try at least two
different test mic locations and average the two if they differ, so that you don’t favor one section of the
listening area.

3. USE ENOUGH PINK NOISE VOLUME TO OVERRIDE BACKGROUND NOISE: 

There’s no need to run

deafening pink noise levels to EQ a system. Just be sure that no green/red LED respond when pink noise
is turned off (if they do, background noise is causing erroneous readings--pink noise should be turned up
higher).

4. USE ±3 dB DISPLAY SETTING FOR LOW FREQUENCY ADJUSTMENTS: 

The crest factor (peak

response) of true pink noise causes considerable LED flutter in the ±1 dB mode, making it difficult to

adjust quickly. We recommend that the ±3 dB setting be used on frequencies below 500 Hz or so; use the
±1 dB on the more sensitive mids and highs.

5. THE ANALYZER SECTION CAN BE USED WITH ANY OTHER EQUALIZER: 

The analyzer section of the

RE 27 and RE 14 will respond to whatever the microphone picks up. Simply run pink noise through the

desired equalizer (channel) and speaker and use the Rane analyzer to adjust that particular EQ.

6. MONITORING PROGRAM WITH ANALYZER DISPLAY: 

When the front panel microphone is

unplugged, the analyzer display automatically monitors the output of the equalizer section (Channel 2

on the RE 14). Use this feature to identify specific feedback points by watching for red LEDs during the

performance; you can then apply EQ exactly where it’s needed very quickly.

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Summary of Contents for RE 14

Page 1: ...RE 27 AND RE 14 OPERATING AND SERVICE MANUAL C O R P O R A T I O N...

Page 2: ...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...

Page 3: ...he Rane factory before taking it anywhere for repairs We will help you to identify and locate any specific malfunctions possibly avoid needless shipment or instruct you as to the speediest method for...

Page 4: ...n reaches 4 dB below clipping 7 ANALYZER DISPLAY LEDs Each red LED lights up when response is too high in that band green LEDs light when response is within 3 dB or 1 dB of the selected curve yellow L...

Page 5: ...this switch with your power amplifiers turned on or turned up DON T BE ALWAYS TURN YOUR AMPLlFIER LEVELS DOWN BEFORE CHANCING YOUR GROUNDS AROUND and then bring them up slowly 1 PINK NOISE LEVEL ADJUS...

Page 6: ...equalizer with input s and output s and a realtime analyzer with mic input and pink noise output Another thing to keep in mind is that the analyzer display will automatically monitor the output of th...

Page 7: ...tor to split the RE 27 output to both left and right inputs of the amp or crossover NOTE If you have the good fortune to be using a Rane crossover AC 22 or AC 23 you need only connect the single RE 27...

Page 8: ...contain built in graphic equalizers provide separate inputs and outputs for thisequalizer BE SURE TO INSTALL THE BUILT IN EQUALIZER AS SHOWN TO BYPASS THE BUILT IN EQUALIZER OTHERWISE THINGS COULD GE...

Page 9: ...uld be balanced whenever possible 1 This set up using the Rane microphone provides the most expedient method to optimize stage monitor sound quality and also reduce feedback problems Feedback induced...

Page 10: ...iagram I I l 3 2 Dashed lines show temporary connections for pink noise test purposes only repeat this configuration for each microphone input channel When testing is completed connect the RE 27 or RE...

Page 11: ...hat you don t favor one section of the listening area 3 USE ENOUGH PINK NOISE VOLUME TO OVERRIDE BACKGROUND NOISE There s no need to run deafening pink noise levels to EQ a system Just be sure that no...

Page 12: ...esponse for the left and right channels If you are running stereo use two mic locations for each channel averaging in the same manner if there are differences 3 PINK NOISE RUN UP Turn down the mixer o...

Page 13: ...ents 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 e...

Page 14: ...0kHz 0 3dB THD Noise less than 009 20 20kHz with 4dBm output IM Distortion less than 02 60 7kHz 4 l Maximum Gain 6dB 3 0dB with sliders centered Input Impedance 20k ohms Output Impedance 100 ohms Maxi...

Page 15: ...Pseudo random NMOS digitally synthesized 23 bit word length 1 min repetition rate Output level adjustable to 4dBm Response 16Hz to 20kHz 1 dB crest factor 4 0 Microphone Omnidirectional back electret...

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