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ROSTEC Station 6 Manual

Mic/line preamplifier and monitor controller
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Station 6 Preamplifier and Monitor Controller
ROSTEC Station 6
Mic/Line Preamplifier and Monitor Controller
Revision 7, September 15, 2017
1

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Summary of Contents for ROSTEC Station 6

  • Page 1: General

    Station 6 Preamplifier and Monitor Controller ROSTEC Station 6 Mic/Line Preamplifier and Monitor Controller Revision 7, September 15, 2017...

  • Page 2: Table Of Contents

    Station 6 Preamplifier and Monitor Controller Table of contents General Front page……………………………………………………..…..1 Contents………………………………………………………..…. 2 Features ……………………………………………………….... 3 General description …………………..…………………………… 3 Microphone and line Inputs......……………………… 4 Insert points….………………………..……………………..…… 5 Direct outputs................5 Monitor outputs……………………………..………………….…… 5 Headphone outputs…………………………..………………..…… 6 Digital mode vs.

  • Page 3: Features

    Again, under normal circumstances, input clipping mount flanges cannot be experienced. Station 6 is a purist's dream come true. The design is General description based on a very stringent philosophy, meaning the shortest possible signal path and the highest possible Station 6 is an ultra low noise and ultra low distortion quality components.

  • Page 4: Microphone And Line Inputs

    Station 6 Preamplifier and Monitor Controller Microphone, instrument and line inputs The 2 microphone inputs are available at the 25 pin The 2 auxiliary line inputs are available at the 25 pin D-SUB female connector on the back panel. D-SUB female connector on the back panel.

  • Page 5: Insert Points

    Station 6 Preamplifier and Monitor Controller Insert points Monitor outputs The monitor outputs (monitor L/R) are available at the The 2 microphone channels each have an analog insert 25 pin D-SUB female connector on the back panel. point available at the 25 pin D-SUB female connectors The monitor outputs are intended for use with active on the back panel.

  • Page 6: Headphone Outputs

    Station 6 Preamplifier and Monitor Controller Cue headphone outputs The cue outputs (headphone L/R) are available at two 1/4" Jack connectors, one at the front panel and one at the back panel. The outputs are intended for dynamic headphones and features an unusual high output capability, able to drive any impedance from 4 ohm to infinity.

  • Page 7: Digital Mode Vs. Analog Mode

    Station 6 Preamplifier and Monitor Controller Digital Mode versus Analog Mode Station 6 can operate in two modes, digital mode and analog mode. The inputs and outputs are basically the same in the two modes, but there are some notable differences in the internal signal flow.

  • Page 8: Examples Studio Set-Up With Daw

    Station 6 Preamplifier and Monitor Controller In the typical studio set-up with a DAW, the 4 signals from the inputs Mic1, Mic2, AUX Line3 and AUX Line4, are sent to the A/D converter and subsequently to the DAW via the USB link.

  • Page 9: Using External A/D And D/A Converters

    Station 6 Preamplifier and Monitor Controller When Station 6 is used with external A/D and D/A converters, it must operate in analog mode. There is no need to install a digital module. With no digital module installed, the unit automatically enters analog mode.

  • Page 10: Personal Set-Up For Guitar Player

    Station 6 Preamplifier and Monitor Controller Above is an example showing Station 6 used as a personal center for the guitar player. The example is based on analog mode, but it works equally well in digital mode. If no digital module is installed, the unit automatically selects analog mode. If a digital module is installed, you can choose between analog and digital mode by the DIP switch 6 at the back panel.

  • Page 11: Operational Description

    Station 6 Preamplifier and Monitor Controller Operational description Quick guide, front and back controls and connections...

  • Page 12: Front Panel Controls

    Station 6 Preamplifier and Monitor Controller Front panel Insert point switch The toggle switch controls the bypass function of the insert point. The insert point exists electrically between the output of the preamp and the input to the digital module.
  • Page 13 Station 6 Preamplifier and Monitor Controller Monitor speaker select Input gain adjust Two different sets of speaker sets can be connected. Turning the knob controls the input gain from minimum The toggle switch controls which speaker set is active. to maximum in one smooth movement. No clicks and no Only one speaker set at a time can be activated.
  • Page 14 Station 6 Preamplifier and Monitor Controller Monitor and cue signal routing A practical way of interchanging the monitor and cue signals is available by two toggle switches. In a studio set-up, the function comes in handy, when the sound engineer wants to hear in the monitor speakers what the artist hears in the headphones.
  • Page 15 Station 6 Preamplifier and Monitor Controller The headphone amplifier is powerful. At high setting it is able to give out 45 Volt peak to peak and a maximum current of 1.2 Amp. The high setting is for professional headphones. It will easily burn semi-pro and budget headphones.
  • Page 16 Station 6 Preamplifier and Monitor Controller Status indicators Monitor dim during talk-back The dim level of the monitor output signal, during talk- back, can be programmed. 4 dim levels are available.0 dB, 6 dB, 12 dB or 18 dB. Here is how: 1.

  • Page 17: Back Panel Connections And Controls

    Station 6 Preamplifier and Monitor Controller Back panel Talk Back input Mains input The mains power inlet is a IEC 60320 receptacle for use with a standard IEC 60320 C14 connector. The acceptable voltage is 190 - 264 Volt AC, 50-60 Hz.
  • Page 18 Station 6 Preamplifier and Monitor Controller Function switch summary Switch 4 Controls monitor signal source. Default is OFF OFF position: In digital mode, the signal to the monitor is sourced from the DAW, In analog mode, the signal to the monitor is sourced from AUX line 3 and 4 inputs.
  • Page 19 Station 6 Preamplifier and Monitor Controller Analog outputs Analog inputs The analog outputs can be found at the back panel at The analog inputs can be found at the back panel at the the 25 pin female D-SUB connector. 25 pin female D-SUB connector.

  • Page 20: Balanced Cabling For Instrument Inputs

    Station 6 Preamplifier and Monitor Controller Balanced cabling for instrument input The balanced instrument/line input opens up the unique possibility to use a balanced configuration with instruments like guitar, bass etc. The configuration will cancel out a large portion of the electrical noise induced in the cables. This is quite advantageous when using long cables on stage or in an electrically noisy environment near light dimmers, high power mains installations or nearby radio stations blasting megawatt into the air.

  • Page 21: Mechanical And Electrical Specifications

    Station 6 Preamplifier and Monitor Controller Mechanical and electrical specifications Dimensions with rack mounts: Width 19 inch, height 1U (44 mm), depth 210 mm Dimension as desktop: Width 420 mm, height 42 mm, depth 210 mm Weight: 5.0 kg Power: 190 - 264 VAC, 50-60 Hz, 15 Watts,...

  • Page 22: Clipping Characteristics

    Station 6 Preamplifier and Monitor Controller Clipping characteristics, input preamp The preamp circuit shows excellent clipping characteristics. When the amp clips, there is no bouncing, ringing, pumping etc. There is just regular and plain clipping. A closer look at the leading edge of the clip shows that there is no overshoot and no recovery delay.

  • Page 23: Noise Performance And Crosstalk

    Station 6 Preamplifier and Monitor Controller Noise performance and crosstalk, input preamp The lower graph shows the spectral density of the input noise by measuring with a sweeping 1/3 octave band pass filter across the audio range. The input was terminated by 150 ohms.

  • Page 24: Classical Distortion Analysis

    Station 6 Preamplifier and Monitor Controller Classical Distortion Analysis The standard analysis of distortion in audio circuits has traditionally been "Total Harmonic Distortion + Noise". This method has only limited usefulness in this case, because the distortion of the LMA8 is so low, that it is masked by noise at higher gain settings.
  • Page 25 Station 6 Preamplifier and Monitor Controller Input preamp, distortion+noise at +30 dB gain The THD+N is below 0.0008 % in the whole audio range. The measured THD+N result is very close to linear from 20 Hz - 20 kHz. The input noise contribution at +30 dB gain corresponds to a level of approx. 0.0007 %.
  • Page 26 Station 6 Preamplifier and Monitor Controller Monitor output, distortion+noise at 20 dBu output level The THD+N is below 0.0004 % in the whole audio range. The measured THD+N result is very close to linear from 20 Hz - 20 kHz The noise contribution of the circuit at +20 dBu output level can be ignored.
  • Page 27 Station 6 Preamplifier and Monitor Controller Headphone output, distortion+noise at 45 V PP output level into a 50 ohm load The THD+N is below 0.0015 % in the whole audio range. The measured THD+N result is very close to linear from 20 Hz - 20 kHz.

  • Page 28: Fft Distortion Analysis

    Station 6 Preamplifier and Monitor Controller FFT distortion analysis FFT analysis has the ability to detect distortion that is buried in the noise. Noise is a statistical phenomenon, and by reading several samples and summing the results, the FFT analysis reduces the noise to its average value, thus revealing the distortion components otherwise buried in the noise.
  • Page 29 Station 6 Preamplifier and Monitor Controller Input preamp, gain +30 dB, frequency 1 kHz. The RMS sum of all distortion components (THD) is 0.00015 %...
  • Page 30 Station 6 Preamplifier and Monitor Controller Input preamp, gain +60 dB, frequency 1 kHz. The RMS sum of all distortion components (THD) is 0.00118 %...
  • Page 31 Station 6 Preamplifier and Monitor Controller Monitor output, output +20 dBu, frequency 1 kHz. The RMS sum of all distortion components (THD) is 0.00016 %...

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