Sound Performance Lab Parametric Equalizer Manuel d'utilisateur

OPTIMIZERparametric equalizerOwner´sManualOperation.Applications.Measurements.Specifications©1994 SPL electronics GmbH

10OPTIMIZERMMAASSTTEERRIINNGGWWIITTHH TTHHEEOOPPTTIIMMIIZZEERRPARAMETRIC SET-UP: To use the Optimizer as a dual-channel, parametric equalizer proceed

11OPTIMIZERSSEETT--UUPP&& AAPPPPLLIICCAATTIIOONNSSons as a general studio equalizer, it is particularly effectiveat treating stereo programme

12OPTIMIZERFFRROONNTTPPAANNEELLCCOONNTTRROOLLSSPeak-LED illu-minates 3dBbefore clip-ping Freq. range(1. or 4.band)Filter modeswitch chooseparametricDu

13OPTIMIZERIn mono mode the signal isrouted from output 2 to theinput of 3, this places all foursections in series. You cantap out after 2 as well as

14OPTIMIZERThe Boost/Cut controls hastwo distinct functions depen-ding on the mode you are in.Boost and Cut as well as roll-off characteristics. Fig.

15OPTIMIZERWith proportional-Q the sig-nal level is dependent of thebandwidth setting - elimina-ting the need for constantlevel readjustment whenchang

16OPTIMIZERThe frequency control (Hz) varies the filter frequencyover the range selected with the Frequency Range switches.The two Frequency Range swi

17OPTIMIZERThe frequency control (Hz) will set the center-frequencywhen working in Parametric, Band-pass and Notch modewhere-as in Low-pass mode it wi

18OPTIMIZER10 2045,1 2990,7 6180,6 2018511 2380,5 3481,7 7096,3 21677All frequencies in Hertz (Hz).The output control sets the output level of the fi

19OPTIMIZERlevel changes due to dramatic boost or cut adjustments. The Notch switch puts the filter into notch filter mode. Itprovides a deep cut of

OPTIMIZER Owner´s Manual:Operation, Applications,Measurements, SpecificationsWritten by Paul Whiteand Hermann GierManual version 1.1/94The information

20OPTIMIZERa notch across the audio spectrum. A further creative use isto create a pseudo stereo image from a mono signal by split-ting the signal and

21OPTIMIZERof the audio spectrum to contrive a bandpass filter for theproduction of ‘telephone’ effects and similar treatments. In the High-pass and L

22OPTIMIZERThe following measurements show that the Optimizer´sphase response is very stable at high amplitudes.The doted line in fig. 16 illustrates

23OPTIMIZERequalizers in modern recording technology. The Optimizerhas an extremely broad frequency response from 0Hz to200kHz that guaranties that th

24OPTIMIZERFig. 20:Noise Measurement"A" WTG: -92,56dBBoost/Cut = 0dB;Fig. 21:Noise Measurement"A" WTG: -108,79dBBoost/Cut = 0dB;Ma

25OPTIMIZERFig. 22:Noise MeasurementCCIR 468: -83dBBoost/Cut = +12 dB;Bandwidth Q = 1.5;Frequency = 1kHzFig. 23:Noise MeasurementCCIR 468: -84dBBoost/

26OPTIMIZERSPL electronics GmbH (hereafter called SPL) products arewarranted only in the country where purchased, through theauthorized SPL distributo

SOUND PERFORMANCE LABORATORYSPL electronics GmbH Hauptstrasse 59 D-41372 NiederkrüchtenP.O.Box: Postfach #1227 D-41368 NiederkrüchtenTel.

3OPTIMIZERCCOONNTTEENNTTSSINTRODUCTION4INSTALLATION7CONNECTORS 7OPERATING LEVEL8POWER SUPPLY8REAR PANEL 9INPUT & OUTPUT SPECIFICATIONS 9APPLICATIO

4OPTIMIZERCongratulations on purchasing the Optimizer, one of themost advanced and musical sounding parametric equalizercurrently available.The Optimi

5OPTIMIZERThe Optimizer comprises fouridentical filter stages whichcan be configured for 4-bandmono, dual 2-band mono or 2-band ste-reo operation.Each

6OPTIMIZERaddition each filter is equipped with a notch-filter. Selectingthe Notch mode overrides the mode switch selector. So com-plex combinations o

7OPTIMIZERtion as each filter is added to the signal path. The Optimizerovercomes this fault by using controllable all active outputstages resulting i

8OPTIMIZERce is not driving Optimizer´s filters sufficiently with the pro-viso that the Peak LED on the front panel is not continuallyflashing. This w

9OPTIMIZERInput- & output specificationsXLR - balanced:Inputs:Electronically balanced(differential) transformerlessImpedance: = 20kOhmsNominal inp