Manual ® Modell 9526 Dual Channel Program EQ
Stereo Vitalizer MK2 Model 9526 Manual by Hermann Gier, Paul White Version 2.2 – 05/1999 The information in this document has been carefully verified and is assumed to be correct. However Sound Performance Lab (SPL) reserves the right to modify the product described in this manual at any time. Changes without notice. This document is the property of SPL and may not be copied or reproduced in any manner, in part or full without the authorization of SPL.
Foreword ................................................................................................. 3 Thanks ...................................................................................................... 3 Introduction ............................................................................................ 4 Operation Safety ................................................................................... 5 Connections ....................................................................
Introduction Vitalizer Awards: In 1993 the “Golden Ear Award” was presented to SPL by Europe´s biggest HiFi-magazine “Audio” for the Vitalizer in HiFi-Version. In 1994 the “Stage Design Award” was presented to SPL by the “Artist” magazine for the exceptionally performance of the Stereo Vitalizer on stage. Operation safety The Stereo Vitalizer MK2 is an equalizer concept which makes use of scientific psychoacoustic technology to process audio signals.
The Stereo Vitalizer MK2 is fitted with both XLR-connectors and TRS stereo jacks for balanced operation, though the jacks may be used with unbalanced connections simply by plugging in mono jack-plugs. The level difference that normally occurs when a balanced input or output is used unbalanced is automatically compensated for. Connections Should the need arise to use the XLR connectors in an unbalanced system, pin 3 of the XLRs should be grounded. Inserting a mono jack also unbalances the XLRs.
Applications Recording Studio 1. The most obvious application of the Stereo Vitalizer MK2 is to process a final mix, either while mixing or during post-production prior to cutting. Insert your Stereo Vitalizer MK2 into the masterinserts of your console or right in between a playback and a recording unit.
3. In electronic music, the Stereo Vitalizer MK2 can be used to add new range and depth to samplers and synthesizers and also to further process existing effects such as delay and reverberation. Even budget instruments and processors with limited audio bandwidths can be made sound full-bodied and detailed. Applications If you want to use a compressor in the master chain after the console, use your Stereo Vitalizer MK2 after the compressor.
Applications Sound reinforcement In live performance or in club installations, the Stereo Vitalizer MK2 is a powerful ally in maintaining speech intelligibility under difficult conditions. It is also of great benefit in systems designed to play recorded music because the illusion of loudness can be maintained at lower absolute SPLs. This could be particularly beneficial with the introduction of new noise level legislation.
When setting up the Stereo Vitalizer MK2 for the first time, it is wise to approach the controls in a specific order to avoid confusion and to achieve positive results right from the start. Use a CD as source. First steps Set-up positions (see front panel picture): • Drive to zero (center position) • Bass Sound to zero (center position) • Bass Compression to Off (counter clockwise) • Mid-Hi Tune to 3.
Control Elements 2 3 4 Active 5 1 Active switches a relay hardbypass circuitry for XLR and jack operation Drive 2 8 1 9 The Active function switches the Stereo Vitalizer MK2 on or off. The illuminated switch indicates that the Stereo Vitalizer MK2 has been activated. The Stereo Vitalizer MK2 features a Drive control that enables you to set the level at which the Vitalizer filter network operates. The level can be changed between -20 dB and +6 dB.
If the Bass Sound control is moved from the center position (0) to the left, the sound becomes very deep, soft, and warm. This sound is known as Soft. This is symbolized with round scaling points which also increase in size as the intensity increases. Control Elements The further the Bass Sound control is shifted to the right or left of the center position, the more intensive the bass in question. However, Process must be positioned to the right of the 9 o´clock setting for the bass to be audible.
Control Elements Bass Compression 4 This easy-to-use compressor works exclusively on the bass and helps you to control the bass amplitude when recording on a digital media. The Gain Reduction LED indicates compressor operation. Mid-Hi Tune 5 Setting the starting frequency for the shelving filter to adapt the frequency range to the hearing sensation. No comb-filtering effect as with graphic EQs.
The Mid-Hi Tune filter can raise the broad-band spectrum with a very linear frequency response, without colouring the signal. Control Elements Above the Mid-Hi Tune value set, the Stereo Vitalizer MK2 filters create a linear increase, i.e. one that is adapted to the human ear. This compensates any inability of our hearing as regards perceiving frequencies ranging between 5kHz and 10kHz. The Mid-Hi Tune filter works with a wide bandwidth and always sounds musical, never ‘bell-like’.
Control Elements Fig. 5: Dotted line: Frequency responses for a Soft Bass Sound at varying Process levels and Mid-Hi Tune set to 3.5 kHz. Solid line: phase responses (drift slightly as the Process intensity increases) The diagram also shows the mid range attenuation according to the increasing Process levels. High EQ 7 The Stereo Vitalizer MK2 works with steep filters and controlled changes of the phase relationships of the high frequencies and harmonics.
The In switch switches the Stereo Expander on or off.The statusLED indicates, that the Stereo Expander is activated. The In switch only illuminates when the Active switch is depressed. In case you want to monitor the Stereo Expander in isolation, switch Active on and set the Process and Intensity controls fully counter clockwise. Control Elements 9 Stereo Expander The Stereo Expander potentiometer controls the width of the stereo image.
Specifications Input & Output Instrumentation amplifier, electronically balanced (differential), transformerless Nominal input level ........................................ +6 dB Input impedance ............................................. = 22 kOhms Output impedance .......................................... < 600 Ohms Max. input level ................................................ +24 dBu Max. output level ............................................. +22,4 dBu Minimum load ohms .....................
SPL electronics GmbH (hereafter called SPL) products are warranted only in the country where purchased, through the authorized SPL distributor in that country, against defects in material or workmanship. The specific period of this limited warranty shall be that which is described to the original retail purchaser by the authorized SPL dealer or distributor at the time of purchase.
