SPL Transient Designer 4 (model 9842) Dynamics  From SPL

A World's First from SPL: The Transient Designer allows transients to be accelerated or slowed down and sustain prolonged or shortened

SPL

$1,169.10

Retail:  $1,399.00

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What We Think


Available in both a 2, or more popular 4 channel (since you really can't have enough channels of this box)- The Transient Designer is a comletey innovative thought... and frankly, one of the few innovative thoughts happening in pro-audio these days. This little box is no ordinary compressor, and doesn't control dynamics in an ordinary way. Basically everyone who comes in contact with this thing won't let it go, and can no longer be without it. The speed and simplicity with which the box can be operated makes it an even more valuable tool. While simple compression does have the ability to do pretty impressive things in terms of both controlling dynamic range (smoothing), as well as various effects such as intensifying. Amazingly, the Transient designer, the first of it's kind can completely change the character of a track by controlling it's transients and decay rates, and it does all of this regardless of the sound levels coming in the box. It is really spectacualr, and puts the engineer even more in the driver seat... With the ability to control the attack and decay of just about anything coming in, we have even greater control of the attitude and character of what it is that we are recording. Once you have a chance to use one of these, you will join the rest of us who have, and will put this on the no-brainer, studio must-haves list.

Manufacturer's Description from SPL


The Transient Designer provides a revolutionary concept for dynamic processing rendering controls such as Threshold, Ratio and Gain superfluous. The Transient Designer's automation is highly developed, so that while the processing going on inside the box may be very complex, the user has to deal with just a few intuitive controls.

Differential Envelope Technology

SPL's Differential Envelope Technology is the first analog solution for level-independent shaping of envelopes allowing transients to be accelerated or slowed down and sustain prolonged or shortened. The degree of dynamic processing required to do this couldn't be duplicated even using a chain of several conventional compressors, yet only two controls per channel are required to allow the user to completely reshape the attack and sustain characteristics of a sound. Attack can be amplified or attenuated by up to 15dB while Sustain can be amplified or attenuated by up to 24dB, enabling weak drum sounds to be made much more percussive and powerful, or for over-percussive transients to be softened. All necessary time constants (Attack, Decay and Release) are automated and optimised adaptively in a musical manner according to the characteristics of the input signal. This results in natural sounding signal processing and fast operation.

How does the Transient Designer work?

The Transient Designer uses envelope followers to track the curve of the natural signal so that optimum results are guaranteed regardless of the input signal's dynamics (for more information refer to Tech Talk). Because of the level-independent processing inherent in Differential Envelope Technology (DET?), manual threshold adjustments are not required. In order to maintain the cleanest possible signal path, the Transient Designer uses the excellently specified THAT 2181-VCAs, which are especially natural sounding, transparent and create minimal distortion. High amplitudes are processed without damping of high frequencies or reducing bass.

Sound benefits

The attack of a bass drum or a loop can be emphasised with a single control to increase the punch and the penetration in the mix Sustain of a snare or room-sound can be shortened very musically to clean up the mix for more transparency Acoustic or electronic instruments get "in the face" sounds or can be smoothened with lower attacks De-verb capability! Less Sustain shortens reverb flags of any sound (more elegant than gates do) New panorama effects based on different dynamic effects per channel ? really groovy for loops

Other features and connectivity

For stereo operation the Link function connects channel pairs (1 and 2 and/or 3 and 4). Linked channels are controlled by the same side-chain voltage so as to maintain a coherent and stable stereo image. When operating in Link-mode, the control elements of the first (or third) channel, including the Active switch, control the second (or fourth) channel, too.

Each channel is equipped with a relay hard bypass circuit to ensure a minimum signal path when the process is bypassed and to provide power fail safety. The Signal-LEDs allow to quickly monitor the signal flow, which is particularly important if the four channels are connected to a patchbay. The Transient Designer is fitted with XLR-connectors for balanced operation. To improve signal quality, SPL has developed a new hybrid-component balanced input/output stage using all laser-trimmed resistors with a tolerance of 0.01%. This approach has resulted in an exceptionally high CCMR (common mode rejection) better than -80dB at 1kHz.

SPL

About Manufacturer

Sound Performance Labs! Full Range of Analog, Tube, and Digital rack gear with an innovative twist. With their most famous transient designer product, SPL has quickly become a household name in both the recording and live sound arenas.

Specifications

Input & Output

  • Instrumentation amplifier, electronically balanced (differential), transformerless
  • Nominal input level:+6dB
  • Input impedance:= 22kOhms
  • Output impedance:< 600Ohms
  • Max. input level:+24dBu
  • Max. output level:+22,4dBu
  • Minimum load ohms:600Ohms
  • Relay Hard Bypass
  • Power Fail Safety

Measurements

  • Frequency response:20 Hz - 100 kHz
  • (100 kHz = -3 dB)
  • CCMR (common mode rejection):- 80dBu @1kHz
  • THD & N:0,004% @1kHz
  • S/N CCIR 468-3:-89dBu
  • S/N A-weighted:-105dBu

Power Supply

  • Torroidal transformer:15VA
  • Fuse:315mA
  • Ground-Lift switch
  • Voltage selector

Dimensions

  • Standard EIA 19"/1U, 482 x 44,45 x 237mm

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