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Summary of Contents for Sound Performance Lab Kultube Model 2049
- Page 1 Manual Model 2049 Stereo Compressor...
- Page 2 R & D: Ruben Tilgner 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.
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Page 3: Table Of Contents
Content Introduction ... 4 Particular Feature, Equipment ... 4 Hookup & Security Advices ... 5 Power Supply ... 5 Connections Rear Panel/Wiring ... 6 General Advices, Sockets & Switches ... 7 Control Elements Red. /VU, Digital Input, Softknee, De Comp..9 PTC-Attack, PTC-Release, Key On, Key Listen, Slave, Active ... -
Page 4: Introduction
Introduction The Kultube is an extremely versatile compressor with a broad range of control facilities that cover all typical compressor applications. From improved stereo mixes in the “MIDI Studio“ to surround mastering with several devices connected, all jobs can be undertaken to the highest degree of sound quality. You can, for example, choose between the hard and soft-knee characteristic and insert external devices via a side-chain input for external control. -
Page 5: Hookup & Security Advices
Carefully select a place for setting up the Kultube. The unit should be situated away from heat sources and direct sunlight. Avoid installation in environments exposed to vibrations, dust, heat, cold or moisture. Keep the unit away from transformers or motors or any other unit that could generate large variations in power supply or cause electrical interferences. -
Page 6: Connections Rear Panel/Wiring
Connections Rear Panel/Wiring... -
Page 7: General Advices, Sockets & Switches
General Advices Again, while Kultube‘s housing is EMV-proof and protects against HF-interference, placement of the unit is very important since it amplifies microphone signals as well as other unwanted signals. Before connecting the Kultube or any other equipment turn off all power. Adjust the voltage setting on the back so that it corresponds with the power conditions. - Page 8 Connections Sidechain inputs This jack is used as a sidechain 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 RCA jack, with the left channel on the tip and the right channel on the ring.
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Page 9: 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 10: Key Listen
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 11: 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 CCW provides no control, and fully CW provides compression starting at a level of approx. -
Page 12: Tube Harmonics
Control Elements Operating Fig. 1, „Threshold Input vs. Output“ 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, ti.e. -
Page 13: The Ratio Control
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 14: The Attack Control
Operating Fig 4 „Attack Normal“ 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 15: Progressive Time Control - Attack
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 16: The Release Control
Operating Fig. 5, „Attack PTC“ Fig. 6, „Release Normal“ Understanding and enjoying the Kultube 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;... -
Page 17: Progressive Time Control - Release
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 18 Operating Fig. 7b Fig. 7c Understanding and enjoying the Kultube 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 19: Summed Signal Processing
Understanding and enjoying the Kultube Using and enjoying the Kultube Summed signal processing The main application area for the Kultube is in stereo summed signal compres- sion together with an analog mixing console. Here the Kultube is looped into the insert paths („Insert Send/Return“). The insert paths are generally in front of the console master fader so that the compressor is driven independent of the master fader settings. -
Page 20: Sidechain
Applications External compression control Frequency-selective Compression De-Essing Ducking: Automatically a desired level relation between two signals (e.g. music and microphone) Ducking & De-Compression: Transferring rhythmic structures to any signal Sidechain Use of the SIDECHAIN inputs expands the possibilities for controlling compression. -
Page 21: Multi Channel And 5.1 Surroundprocessings
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 number of devices for multi-channel or surround applications. Simply define a master for controlling all the other units (slaves). Each slave must be defined as a slave using the SLAVE switch on the front panel. -
Page 22: Specifications
Specifi cations Measurements Frequency range (100 kHz = -3 dB) ... 10 Hz-150 kHz Common mode rejection (@ 0 dBu) ... 1 kHz: › 80 dB / 10 kHz: › 65 dB THD & N (@ 0 dBu) ... › 82 dB S/N (A-weighted) ... -
Page 23: Warranty
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. -
Page 24: Your Notes
Kultube – Manual Your notes ................. . .
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