Page 2 - Safety Instructions; To reduce the hazard of electrical; WARNING
Safety Instructions Caution: To reduce the hazard of electrical shock, do not remove cover or back. No user serviceable parts inside. Please refer allservicing to qualified personnel. WARNING : To reduce the risk of fire or electric shock, do not expose this unit to rain or moisture. The lightning f...
Page 3 - Table of Contents
Table of Contents Introduction 2C valve Features 3 Controls and Functions 4-5 Front Panel Layout 4 Rear Panel Layout 5 Operating the C valve 6-13 Setting Up the C valve 6-7 Setting a Good Level 8 Using The C valve For Getting A Sound 9 Using the Low Cut Filter 9-10 Using the Tube Process 10 Using th...
Page 4 - Introduction
2 Congratulations! You just purchased one of the most useful audio tools for digital audiorecording, C valve from Samson Audio. The C valve is a high quality microphone/instrumenttube pre-amplifier offering a tremendous amount of transparent gain with a pristine audiopath that terminates in both bal...
Page 5 - C valve Features
3 C valve Features The Samson C valve microphone and instrument pre-amp utilizes the latest technology in circuit design. Here aresome of its main features: • A high quality microphone or instrument pre-amplifier using discrete transistor and tube gain cells. • On board Limiter for leveling the outp...
Page 6 - C valve Layout; Front Panel Layout
4 C valve Layout 1 INPUT GAIN – Rotary control used to adjust the input level. 2 LOW FREQUENCY – This rotary control is used to set the EQ cut off point for the Low Cut filter. 3 INPUT METER – Six segment LED VU meter dis- plays the input level after being affected by the Gain control. 4 SATURATION ...
Page 7 - Rear Panel Layout
A AC INLET – Connect the included AC1800 power supply here. B 24 BIT 48 / 96 (DIGITAL OUT) - 24-bit S/PDIF Digital Output on an RCA connector. C DIGITAL LINK IN - 1/4-inch input jack for con- necting the balanced line output of a second C valve so that the two units work as a stereo unit transmittin...
Page 8 - Operating The C valve; Setting up the C valve
6 Operating The C valve Setting up the C valve Setting up your C Valve tube pre-amp is a simple procedure, which takes only a few minutes: 1. Remove all packing materials (save them in case of need for future service) and decide where the pre-amp isto be physically placed. To avoid potential overhea...
Page 10 - Setting a Good Level
8 Operating The C valve Setting a Good Level One of the most important fundamentals of good audio engineering is setting proper levels. Even on a small typi-cal mixer, or basic multi-track recorder, there are several controls that affect the level of a signal as it makes it’sway from your sound sour...
Page 11 - Using The C valve For Getting A Sound
9 MIC/INST - Select switch The MIC/INST switch is used to set the operating level of the C valve’s input. When using a microphone, set theswitch to the “MIC” position, which is selected when the switch is in the out positionand the green LED is off. When you press the MIC/INST switch in, the green L...
Page 12 - Using the Tube Process
10 Using the Low Cut Filter ( continued) LOW FREQUENCY You can set the exact frequency to start attenuating the low-end using the LOWFREQUENCY control knob. Be sure that the LOW CUT filter switch is engagedas described in the previous section. The variable LOW FREQUENCY rotaryknob allows you to set ...
Page 13 - Using C valve With An External Signal Processor
11 Using C valve With An External Signal Processor To further control your signal, the C valve features an insertion point, or “effects loop”, on two 1/4-inch phonejacks, INSERT SEND and RETURN. An insertion point is a patch-point that interrupts the signal, allowing you tobring that signal outside ...
Page 16 - C valve System Set-Ups; Using C Valve in a Live PA System
14 C valve System Set-Ups Using C Valve in a Live PA System Using C Valve to Warm-up a signal In this example, a condenser microphone is connected to the C valve’s MIC input using a standard XLR cable. Tomake a balanced connection, the C valve’s output is connected to the input of a standard PA mixe...
Page 17 - balanced OUTPUT of the second C valve is connected to the DIGIT
15 C valve System Set-Ups C Valve Stereo Digital Recording Set-up with External Compression In this example, two C valves are used for recording a stereo signal to a computer based hard disk recorder . The balanced OUTPUT of the second C valve is connected to the DIGIT AL LINK input on the first C v...
Page 18 - Stacking and Tilting the C valve
16 Stacking and Tilting the C valve Installing the Tilting Feet You can install the tilting rubber feet included withyour C valve so that you can set the unit at a com-fortable operating angle on a workstation or desk-top. Follow the simple instructions below to installthe tilting feet. • Remove the...
Page 19 - C valve Connections; Unbalanced 1/4” Connector; CONNECTING THE C valve; Balanced TRS 1/4” Connector
17 C valve Connections Unbalanced 1/4” Connector Insert Cable 1/4” male TRS connector to two male 1/4”in send and return configuration. XLR Balanced Wiring Guide CONNECTING THE C valve The are several ways to interface the C valve to support a variety of applications. The C valve features servo-bala...
Page 21 - C valve Block Diagram
Page 22 - System Specifications; Specifications
20 System Specifications Frequency Response 20Hz to 20kHz + - 0.5 dB Dynamic range 95 dBu, un-weighted, 22 Hz to 22 kHz THD 0.008 % typ. @ +4 dBu, 1 kHz Crosstalk 90dB 22 Hz to 22 kHz Detector RMS Inst/Line InConnectors 1/4"TRS jack Impedance 1 meg Ohm balanced Max. Input Level +21 dBu, balanced...
Page 24 - Samson Technologies Corp.
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
