SPL Stereo Vitalizer MK2

SPL Stereo Vitalizer MK2

SPL Stereo Vitalizer MK2

SPL Stereo Vitalizer MK2

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  • 1Description

The Model 9526 Stereo Vitalizer MK2 from SPL is an audio processing device that provides harmonic processing designed to make your tracks stand out. The processing applies psychoacoustic and audiometric principles to achieve a sonic improvement while effecting the sound. The Vitalizer processes only the original signal and generates no artifacts. SPL-created filtering techniques highlight the richness of the audio signal in all its detail, while the interactive parameters make it possible to alter the sound in a more musical and effective way. This unique combination of filtering and usability enable you to make music production more stimulating and natural. Music and speech are made clearly distinguishable and comprehensible, loudness more intense, and the whole soundscape becomes wider.

The Vitalizer filter network was designed to assist the sound engineer in achieving an objective improvement while optimizing sound.The unit assists in creating more detail, more transparency, more loudness and, if needed, an expanded low-end foundation, regardless of whether you process a single channel or a sum of channels.

The Stereo Vitalizer Mk2 is designed for mastering, post production work and sound reinforcement.

The signal-to-noise ratio has effectively been improved by 8 dB (at full effect), and this is especially beneficial when the Stereo Vitalizer Mk2 is wired between the mixer's output and a power amplifier, as it might be in PA or disco applications.

To set the operation level of the filter network more precisely, a Drive control has been added that enables the setting of continuously variable levels between -20 dB and +6 dB. A Clip LED illuminates to indicate a potential overload.

Another updated feature is the integrated compressor, which only works where it is most useful, in the bass range. When recording on digital equipment, it is essential not to overload the inputs of such systems which would otherwise result in invalid samples or digital peaks which can create audible artifacts. As the bass frequencies carry most of the level, it makes a lot of sense to integrate a compressor into the bass path. We designed the compressor as a 'one-knob' solution to make it easier to operate, and a soft-knee characteristic was chosen for unobtrusive operation. The threshold, attack and release are automatically adjusted while the Compression control sets the ratio value. The blue Gain Reduction LED indicates the point at which the compressor starts to operate.

The characteristic of the Process control has been changed in order to produce a mid-damping effect that sounds more consistent for the soft as well as the tight bass sound.

To freshen up the top-end of a recording, the updated High EQ and Intensity controls have been integrated. The High EQ works with steep filters and controlled changes of phase relationships of the high frequencies and harmonics. The Mid-Hi Tune and the High EQ filter complement each other, while the Mid-Hi Tune sets the frequency above which the program material is lifted and below which damping takes place.

The High EQ and Intensity controls also extract certain frequencies during this process which is helpful when you are processing material with lead vocals: Using the Mid-Hi Tune will generally dampen some speech frequencies so the voice moves into the mix cancelling a bit of its presence. Use the High EQ to catch the voice and the Intensity control to bring it back up front again.

The Active function is a relay-switched hard-bypass, which automatically routes the input to the output in the event of a power failure to maintain signal flow.

The Stereo Vitalizer Mk2 is equipped with both XLRs & stereo jacks for balanced operation. SPL uses the new SSM precision input and output stages which feature laser-trimmed resistors, providing a common mode rejection of better than 87 dB. Mono-jacks may be used for unbalanced operation without level change.

Easier and more intuitive handling
Suited for re-mastering stereo sources
Inserted via master or sub-group inserts
High signal-to-noise figures
Soft and tight bass sound options with bass compressor
Mid, high, and harmonic processing
Variable input level
Stereo Expander
Hard bypass relay (power fail safety)
Balanced operation
XLR and stereo Jack I/Os
1U Rack mountable
In the Box
SPL Stereo Vitalizer MK2
  • Limited 2-Year Warranty
  • Table of Contents
    • 1Description
    Inputs and Outputs Instrumentation Amplifier, electronically balanced (differential), transformerless
    Nominal Input Level: +6 dB
    Input Impedance: 22 kOhms
    Output Impedance: < 600 ohms
    Maximum Input Level: +24 dBu
    Maximum Output Level: +22.4 dBu
    Minimum Load Ohms: 600 ohms
    Relay Hard Bypass: yes
    Power Fail Safety: yes
    Measurements Frequency Response: 10 Hz to 100 kHz (100 kHz = -3 dB)
    EQ Frequency Range: 15 Hz to 22 kHz
    CCMR (Common Mode Rejection): >-86 dBu @ 1 kHz
    S/N CCIR 468-3: -89 dBu
    S/N A-Weighted: -105 dBu
    Power Supply Torroidal Transformer: 15 VA
    Fuse: 315 mA
    Ground-Lift Switch , Voltage selector
    Dimensions (W x H x D) Standard EIA 19" / 1U 19.0 x 1.7 x 9.3" (482 x 44 x 237 mm)
    Weight 7.8 lb (3.4 kg)
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