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Summary of Contents for SPL Kultube 2049
- Page 1 Manual Model 2049 Stereo Compressor...
- Page 2 Changes without notice. This document is the property of SPL and may not be copied or repro- duced in any manner, in part or full without the authorization of SPL.
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Page 3: Table Of Contents
Content Important Security Information ..............4 Installation, Power Supply ................ 6 Introduction ....................7 Connections Rear Panel/Wiring ..................8 General Advices, Sockets & Switches ............9 Control Elements Red. /VU, Digital Input, Softknee, De Comp..........11 PTC-Attack, PTC-Release, Key On, Key Listen, Slave, Active ....... 12 Threshold, Ratio, Release, Make Up Gain .......... -
Page 4: Important Security Information
Important Security Information Please note and retain this manual. Carefully read and follow all of the safety and operating instructions before you use the machine. Be doubly careful to follow all warnings and special safety instructions noted in this manual and on the unit. Connections: Only use the connections as described. - Page 5 Important Security Information Air Circulation: Chassis openings offer ventilation and serve to protect the machine from overheating. NEVER cover or otherwise close off these open- ings. NEVER place the machine on a soft surface (carpet, sofa, etc.). Make sure to provide for a mounting space of 4-5 cm/2 inches when mounting the machine in racks or cabinets.
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Page 6: Installation, Power Supply
Installation Be very careful to check that the rear chassis power selection switch is set to the correct local line voltage position before using the unit (230 V posi- tion: 220-240 V/50 Hz, 115 V position: 110-120 V/60 Hz)! When in doubt about a source, contact your dealer or a professional electri- cian. -
Page 7: Introduction
Discrete Gain Cells SPL has developed discrete, very high performance gain cells that are used instead of the usual VCAs and the Kultube is the first product to use them. They ensure the highest level of musicality and clarity in signal processing and demonstrate significantly improved distortion values over VCAs. -
Page 8: Connections Rear Panel/Wiring
Connections Rear Panel/Wiring... -
Page 9: General Advices, Sockets & Switches
Connections General Advices Again, while Kultube‘s housing is EMV safe and protects against HF interfer- ences, proper placement of the unit is very important. Before connecting the Kultube or any other equipment turn off all power. Adjust the voltage setting on the back so that it corresponds with your local electrical power conditions. - Page 10 Connections Sockets & Rear Switch Side-chain inputs This jack is used as a side-chain input for connecting an external audio signal to control the Kultube (e. g. an equalizer for frequency dependent processing). It is configured as a stereo TRS jack, with the left channel on the tip and the right channel on the ring.
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Page 11: Control Elements
Control Elements Switches Please note also the information on various controls under „Understanding and enjoying the Kultube“ starting page 12. RED/VU This switch changes the VU meter over to Gain Reduction mode. The indicator needle then jumps to the 0 dB value and moves to the left with increasing compression. -
Page 12: Ptc-Attack, Ptc-Release, Key On, Key Listen, Slave, Active
Control Elements Switches Progressive Time Control: ATTACK This function allows to switch in an adjustable automatization of the time constants which is set up with the ATTACK control. Put simply you can now influence the compression intensity for rapid signal increases, or when the function is turned off determine the time until a certain compression level is reached. -
Page 13: Threshold, Ratio, Release, Make Up Gain
Control Elements Controls THRESHOLD The Threshold control determines the compressor threshold value. The value scale for the THRESHOLD control indicates the level in dBu. Turning fully left provides no control, and fully right provides compression starting at a level of approximately –40 dBu. -
Page 14: Tube Harmonics
Control Elements Controls TUBE HARMONICS The TUBE HARMONICS control allows you to drive the tube output stage infi- nitely variable to desperation: the more the control is turned in, the further the tube gets into saturation and the more harmonics are produced. The output level of this stage is automatically adjusted, i.e. -
Page 15: The Ratio Control
Operation Understanding and enjoying the Kultube The Ratio control As indicated above, this determines the ratio between the in- and output level above the threshold setting. The preset value specifies how the input dynamics should behave with respect to the output: a ratio of 1 to 2 means that only half of the dynamic change will be present on the output. -
Page 16: The Attack Control
Operation Understanding and enjoying the Kultube In the latter case the ratio changes depending on the in0ut signal. As the preset threshold value is approached the ratio is comparatively small (1:1.5) and doesn’t reach the preset maximum value until high input levels are present. -
Page 17: Progressive Time Control - Attack
Operation Understanding and enjoying the Kultube Processed in this way, drums get more self assertion and sound ‚faster’. The best setting is not always easy to find, since you usually need to find a compromise. Very fast settings run the risk of producing audible distortions –... -
Page 18: The Release Control
Operation Understanding and enjoying the Kultube Fig. 5, „Attack PTC“ Fig. 5 shows the control behavior using a sinus burst as an example. In various settings it is clearly to see that the burst signal remains almost unchanged in its form; only the intensity changes. The PTC feature can provide outstanding results not only for percussive signals but also for many other musical signals (vocals, guitar, bass, horns, synthesizers, etc.), since compression is used with the greatest efficiency,... -
Page 19: Progressive Time Control - Release
Operation Understanding and enjoying the Kultube The release parameter is also for the most part responsible for unobtrusive compression. This means it is hard to find the perfect setting as with the Attack control – particularly in the case of complex summed signals a fixed release time may hardly be usable. - Page 20 Operation Understanding and enjoying the Kultube Fig. 7b Fig. 7c For settings with larger averages the change in the release time is easy to recognize. With very small values the control voltage for the Gain Cell “sticks” to the rectified signal and works almost like an envelope follower. Fig.
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Page 21: Summed Signal Processing
Operation Understanding and enjoying the Kultube Fig 8 „Release – PTC“ Applications Using and enjoying the Kultube Summed signal processing The main application area for the Kultube is in stereo summed signal compres- Console: sion together with an analog mixing console. Inserts Send/Return Here the Kultube is looped into the insert paths („Insert Send/Return“). -
Page 22: Sidechain
Applications Using and enjoying the Kultube Sidechain Use of the SIDECHAIN inputs expands the possibilities for controlling External compression. A typical application is frequency-selective compression, compression control whereby an external equalizer is used to raise the frequencies at which the compressor should respond or to filter out the frequency band you wish the compressor to ignore. -
Page 23: Multi Channel And 5.1 Surround Processing
Applications Using and enjoying the Kultube Multi-channel and 5.1 surround applications The Kultube lets you use the MULTI CHANNEL LINK function to link any Multi Channel Link: number of devices for multi-channel or surround applications. Simply define a Multi channel or master for controlling all the other units (slaves). -
Page 24: Specifications
Direct SPL product support requires product registration. Please fill out the guarantee card enclosed in the package legibly in printed letters and send it directly to SPL. Or use the online registration form that may be reached at www.soundperformancelab.com (international clients) or www.spl-usa.com...
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