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7

Setting Up the C valve  (continued)

6. Plug the C valve power pack into a wall outlet and switch the unit on by pressing the power switch.

7. If you are using an instrument with your C valve, press the MIC/INST switch in to set the C valve’s input to
accept instrument levels.  The LED will illuminate.   If you are using a microphone skip this step and go on to the
next step.

8. The C valve features on board 48-volt phan-
tom power supply for connecting condenser
microphones.  

IMPORTANT NOTE

:

With all phantom power sup-

plies, you can get an annoying POP when you engage
the phantom power supply, or when you unplug a
cable that has phantom power on it.  Depending how
loud you are monitoring, this POP can cause damage
to your speakers, and even to your hearing. Be sure to
turn your speakers, and/or headphone levels, all the
way down when switching the phantom supply on and
off or plugging and unplugging cables. 

If you are using a condenser microphone, turn
down your monitor speakers and/or headphones,
and then press the front panel 48 VOLT switch to
engage the phantom power. 

9. Now, set a level by playing your instrument or
singing into your mic, and slowly raise the INPUT
GAIN control until you see the LED VU meter
reach a level of about “0dB”.

10. Be sure that your mixer or recorder’s input is
enabled and turned up.  Now, slowly raise the
output VOLUME control until you reach a good
level, about “-3dB”, on the analog output VU
meter. Then, set a good level on your mixer or recorder. 

At this point you should be sending a clean signal to your mixer or recorder and you can experiment with the
SATURATION, VOCAL EQ and ENHANCER features for fun. A detailed explanation of these functions will be
covered in the following sections of this manual.

Operating The C valve

Summary of Contents for C.valve C Class

Page 1: ...C C l a s s S i g n a l P r o c e s s o r s TUBE MICROPHONE INSTRUMENT PREAMPLIFIER WITH DIGITAL OUTPUT...

Page 2: ...ture 6 Clean only with a damp cloth 7 Do not block any of the ventilation openings Install in accordance with the manufacturers instructions 8 Do not install near any heat sources such as radiators he...

Page 3: ...ing the Enhancer 10 Using C valve With An External Signal Processor 11 Using the Digital Output 12 Using the Digital Link Jack 13 System Set ups 14 15 Stacking and Tilting the C valve 16 C valve Conne...

Page 4: ...nverter with a selectable sample rate of 48 or 96K feeding the S PDIF digital output In addition two C valve s can be linked together to make a stereo mic pre with digital out The C valve is a perfect...

Page 5: ...o read the Output Level 48 volt phantom power for powering condenser microphones is available by pressing the LED backlit 48 Volt push switch located on the front panel S PDIF output via an internal h...

Page 6: ...IC INST switch This switch is used to select the proper input operating level for either a microphone or a line instrument signal source 11 48 VOLT When pressed in the switch will illu minate red indi...

Page 7: ...gle S PDIF digital output D BALANCED OUTPUT 1 4 inch TRS TIP RING SLEEVE connector for balanced line level output E RETURN INSERT 1 4 inch phone jack for car rying the return signal of the external pr...

Page 8: ...plug the power pack into a wall outlet just yet 3 Set the controls to the following positions 4 Using a standard XLR microphone cable connect your microphone to the MIC input located on the rear panel...

Page 9: ...akers and or headphone levels all the way down when switching the phantom supply on and off or plugging and unplugging cables If you are using a condenser microphone turn down your monitor speakers an...

Page 10: ...se the INPUT GAIN control to adjust the level of your input signal It is a good idea to start with the level low and raise it up as you need Be sure to monitor the input LED VU METER and try to set th...

Page 11: ...alve pre amp When the PHASE switch is pressed in the yellow LED will light show ing that the input signal is now out of phase Using The C valve For Getting A Sound In addition to providing a pristine...

Page 12: ...n LED will illuminate and you will be adding some airy top end to the signal LIMIT In order to help set and keep a good signal level the C valve features on on board limiter circuit A limiter is a typ...

Page 13: ...audio devices to process the signal directly inside the C valve A common application for the C valve s insert point is using a compressor Insert Send and Return To send a signal to an external proces...

Page 14: ...The C valve has an internal 24 bit A to D converter that can be set to either 48 kilo hertz or 96 kilohertz sampling rates Be sure to set the digital input on your sound card or digital recorder to th...

Page 15: ...signal from the second C valve s OUTPUT can be connected the DIGITAL LINK jack of the first unit to feed the right channel of the first C valve s A to D converter Now use the S PDIF output on the firs...

Page 16: ...RING SLEEVE cable The mixers main left and right outputs are connected to powered PA speakers for example the Samson dB500a You can use the C valve to warm up the signal from recorded tracks or instr...

Page 17: ...to a computer based hard disk recorder The balanced OUTPUT of the second C valve is connected to the DIGITAL LINK input on the first C valve so that both signals are sent the S PDIF out on C valve one...

Page 18: ...from right front bumper Identify the right tilting foot by the locating R marking on the inside top Position the angled foot under the right bumper as shown in the drawing Use the included 4 x 10mm sc...

Page 19: ...tput patch points that interrupt the channel or bus signal so that external processors can be connected Channel insert points are ideal for connecting to when using the C valve to process a single cha...

Page 20: ...unit to the rack as shown below 3 Repeat steps 1 and 2 to mount the second C Class unit if desired 4 Once the units are mounted on the C Rack the assembly can be placed into a rack and secured via th...

Page 21: ...19 C valve Block Diagram...

Page 22: ...40dB 55dB 1kHz Analog Output Connectors 1 4 TRS jack Impedance 60 Ohms balanced 30 Ohms unbalanced Max Output Level 21 dBu balanced and unbalanced Digital Output Connector RCA Type S PDIF Converter 24...

Page 23: ......

Page 24: ...Samson Technologies Corp 575 Underhill Blvd P O Box 9031 Syosset NY 11791 9031 Phone 1 800 3 SAMSON 1 800 372 6766 Fax 516 364 3888 www samsontech com...

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