Manual
®
Modell 9526
Dual Channel Program EQ
Stereo Vitalizer MK2
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.
Limitations of Liability:
In no event will SPL be liable for any damages, including loss of data, lost profits, cost of cover or other special, incidental, consequential or indirect damages arising from the use of the unit, however caused and on any theory of liability. This limitation will apply even if SPL or an authorized dealer has been advised of the possibility of such damage.
SPL electronics GmbH
P.O. Box 12 27
D- 41368 Niederkruechten, Germany
Tel + 49 - 2163 - 9 83 40
Fax + 49 -2163 - 98 34 20
e-Mail info@soundperformancelab.com
© 1998 SPL electronics GmbH. Vitalizer® is a registered trademark of SPL electronics GmbH.
Model 9526
Foreword ................................................................................................. |
3 |
Thanks ...................................................................................................... |
3 |
Introduction ............................................................................................ |
4 |
Operation Safety ................................................................................... |
5 |
Connections ............................................................................................ |
6 |
Applications |
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Recording Studio .................................................................................. |
6 |
Tape Duplication .................................................................................... |
7 |
Broadcast ................................................................................................. |
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Sound reinforcement ........................................................................... |
8 |
Video & film post production ............................................................ |
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First steps ................................................................................................. |
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Control Elements |
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Active ........................................................................................................ |
10 |
Drive .......................................................................................................... |
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Bass ............................................................................................................ |
10 |
Compression ........................................................................................... |
12 |
Mid-Hi Tune ............................................................................................. |
12 |
Process ...................................................................................................... |
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High EQ .................................................................................................... |
14 |
Intensity ................................................................................................... |
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Stereo Expander .................................................................................... |
15 |
Power supply .......................................................................................... |
15 |
Specifications ......................................................................................... |
16 |
Warranty .................................................................................................. |
17 |
Dear customer,
Thank you for the confidence you have shown towards SPL electronics GmbH by purchasing the SPL Stereo Vitalizer MK2. You have decided to use a tool of high performance which sets you in the position to have faster success and a better sound quality in music productions, live sound applications and pre-masterings.
As a typical SPL unit the Stereo Vitalizer MK2 combines exemplary specifications and high manufacturing standard with excellent sound quality to provide you a precious component for recording purposes.
Please read this manual carefully to ensure you have all the information you need to use the Stereo Vitalizer MK2.
We wish you every success with your new Stereo Vitalizer MK2.
Your Sound Performance Lab-Team
I would like to start with my thanks to all our staff, who created what is to be described here. The importance of their exceptional qualification and talents cannot be overestimated.
Our products are often tested and compared in many publications and by our customers themselfs and constantly valued with best results. I would like to pass on this broad appreciation to those, who deserve it – my excellent colleagues.
Hermann Gier
S T E R E O 
M K2
Contents
Foreword
Thanks
3
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
Important security advices
4
The Stereo Vitalizer MK2 is an equalizer concept which makes use of scientific psychoacoustic technology to process audio signals. The unique combination of dynamic equalizers, ampli- tude-controlled phase correction, harmonic filtering and stereo expandingopens up a whole new listening dimension by adapting the sound pattern to the non-linearities of the human ear.
The Stereo Vitalizer MK2 gives the mid frequencies accurate transparency with a soft, unobtrusive sound. The treble range is reworked with broadband shelving filters, which focus on achieving a smooth, silky sound pattern. High frequencies are livened up without them sounding hard or aggressive. The Stereo Vitalizer MK2 uses a newly developed filter network to process the low frequency range.The bass is accentuated without any risk of emphasizing the lower mid frequencies unnaturally. You can choose between a dry, percussive bass (Tight) or a punchy, soft and very deep sound character (Soft). An easy to use compressor complements the bass section allowing the correction of level change due to bass processing. The result is a pleasanter and livelier sound pattern with an unrivalled wealth of detail.
The Stereo Vitalizer MK2 is especially designed to serve the needs in recording, mastering, cutting and post production work. Used on complete mixes or being inserted into the subgroups to treat specific parts of the mix, the Stereo Vitalizer MK2 will perform the same task as those esoteric and costly equalizers often used for audio sweetening but with far greater tonal flexibility and at a much lower cost.You will be amazed by how transparent and powerful almost every audio signal sounds after it has been processed with the Stereo Vitalizer MK2!
The housing of the Stereo Vitalizer MK2 has the standard 19"- EIA format and occupies 1U (44.45 mm) in your rack. When installing the unit in a 19"-rack, the rear side of the unit needs some support, especially in a touring case.
The Stereo Vitalizer MK2 should not be installed near units which produce strong magnetic fields or extreme heat. Do not install the Stereo Vitalizer MK2 directly above or below power amplifiers.
Check that the voltage details quoted on the back panel are the same as your local mains electricity supply. Use a minus (-) screwdriver to set the voltage selector to the voltage for the area in which the unit will be used.
Never cover up the ventilation slots on the top of the unit. If, during operation, the sound is interrupted or indicators no longer illuminate, or if abnormal odor or smoke is detected, or if liquids are spilled on the unit, immediately disconnect the power cord plug and contact your dealer.
Only clean your Stereo Vitalizer MK2 with a soft, lint-free cloth.
S T E R E O 
M K2
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.
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.
Both output stages operate in parallel, so it is possible to connect two different destination units simultaneously, for example to record to two different media at the same time or split the output between a mixer and effects processor. However, only one type of input (jack or XLR) should be connected at a time – the Stereo Vitalizer MK2 is not intended to be used as a mixer!
To ensure optimal signal quality, SPL has developed a new hybrid-component balanced input/output stage using all lasertrimmed resistors with a tolerance of 0.01 %. This approach has resulted in an exceptionally high CCMR (common mode rejection); 100 dB at 1kHz and 80 dB at 10 kHz.
As a precaution, before connecting the Stereo Vitalizer MK2 switch off the power to the unit and to all connected units.
Pin wiring: Stereo Jack plug
Tip=Hot(+) Ring=Cold(-) Sleeve=GND
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Pin wiring: XLR connectors |
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3 |
2 |
1=GND 2=Hot(+) 3=Cold(-) |
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M K2
Connections
5
Applications
Recording Studio
Application 1:
The Stereo Vitalizer MK2 inserted into the master-inserts of the console
Application 2:
The Stereo Vitalizer mk2 inserted between noise-reduction and recorder to improve archived recordings
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. Although inserting the Stereo Vitalizer MK2 into the master inserts is the most popular application, we advise to insert the unit into the sub-groups, so that specific elements of the mix are being treated with the Vitalizer process.
When patching the Stereo Vitalizer MK2 into the sub-groups or master-breaks of the console, note if the master breaks are switched ‘pre’ or ‘post’ fader. They should best be switched ‘pre’ fader, so that a variation of the master fader does not affect the input level of the Stereo Vitalizer MK2. The effect level and the treated sound will then remain unchanged.
It is important to use full-range monitors to assess the effect of any bass processing in and out of circuit in order to appreciate just how much processing has been added; the brain soon acclimates to changes in timbre and it is easy to overdo it! If in doubt, refer frequently to known recordings played through the same monitor system. Do not connect the Stereo Vitalizer MK2 between masteroutputs and amplifier. The major disadvantage of this connection is the varying input sensitivity with each fader movement.
2. Another popular stereo application is the processing of existing master tapes during post-production such as when reprocessing archive material for CD release.
If a single-ended noise reduction system is used to clean up the original, the Stereo Vitalizer MK2 can make a significant contribution in restoring the high end detail that invariably suffers during such treatment. In many cases, the restored master can be made to sound appreciably better than the original.
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