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Related Manuals for Signal Audio Workshop CH2-M
Summary of Contents for Signal Audio Workshop CH2-M
- Page 1 CH2-M Vacuum tube 2-Channel Microphone pre, with master control room console OWNER’S MANUAL Signal Audio Workshop Abarbanel ST. Tel Aviv 66089 Israel P.O.B 5169 TLV 61051 Office: 972-3-6820892 Fax: 972-3-6824716 www.signal-audio.com...
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Page 2: Table Of Contents
CH2-M Owner’s Manual Content: Preface__________________________ Front panel controls _________________ Rear panel _______________________ Construction options________________ Signal chain______________________ Psu15 power supply_________________ Tips & Tricks________________________- Block diagram____________________-- Installation________________________ __ Maintenance_________________________ Specifications_____________________ Warranty_________________________ 13-15 www.signal-audio.com... -
Page 3: Preface
The CH2-M is a result of a two year development period in which we researched the fundamentals of Microphone pre amps topologies, in an effort to innovate and achieve the CH2-M outstanding Sonic capabilities. -
Page 4: Front Panel Controls
Front panel controls: 48v phantom switch. Phase reverse switch. -20db pad (reduction of high level input signals). Input select switch – selects input source microphone/DI. Direct input specially designed for high impedance sources (input impedance 4.7m). Tube gain knob from +22db to 60db. H.P.F. -
Page 5: Rear Panel
Rear panel: Rear panel elements: PIN1 GND PIN2 HOT 4 XLR balanced line input/output PIN3 COLD connectors with the same pin standard as shown in the diagram. Mains voltage 220/115 VAC input select switch. Mains power socket with mains fuse. Construction options: step rotary gain selector optional... -
Page 6: Signal Chain
T.B. unit block diagram: Signal chain: This chapter details on the signal chain’s structure in order to help you better understand the CH2-M. INPUT SECURITY: Designed for maximum optimization of all microphones with all standard features like +48v (phantom), phase reverse switch and -20db pad, especially designed for minimum sonic degradation. - Page 7 mode noise rejection at high frequencies. Multiple interleaved windings ensure low leakage inductance for excellent ultra high frequency response. Mu-metal can for magnetic shielding. TUBE GAIN STAGE: Vacuum tube class A topology gain amplifier ranges from +22db to 62db (typical). Designed especially to deliver a constant sonic performance at all gain levels.
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Page 8: Psu15 Power Supply
Psu 15 power supply: The Psu 15 unit is an all discrete CLASS A topology, made with massive filterazation, designed especially for the lowest noise floor needed in microphone amplifying. For a fact: Pre amps noise floor is constructed from the amp’s self noise + its Psu noise floor. -
Page 9: Tips & Tricks
Tips & Tricks: 1. stereo recording: one of the most common methods of recording stereo signals is done by locating two identical microphones in an x/y mode and the calibration of the gain should be done by the following steps: A. -
Page 10: Block Diagram
Control Room Block Diagram: This chapter details the signal chain structure in order to help you better understand the control room section functions. All signal stages are passive and unbalanced. Installing the unit: Always install this unit in a properly grounded environment! Do not expose the unit to humidity or dusty environment! Do not expose the unit to heat sources and unventilated places! Always make sure that the unit operates on the correct mains... -
Page 11: Maintenance
Maintenance: Cleaning: Do not clean the unit with water or with water soaked cloth. Cleaning is best made with dry dusting brush and vacuum cleaner. Dust and moisture are the primer enemy of switches and contacts within this unit. Avoiding them as much as you can will prolong the unit’s life significantly. -
Page 12: Specifications
230Vac @ 50Hz / 115Vac @ 60Hz. Dimensions CH2-M: H= 3 units, W= 19”,D=5”. Dimensions Psu-15: W=5.5”, H=4”, D=11” Shipping weight: All spec’s at RL=600Ohm. Info subject to change without prior notice! All legal rights reserved to Signal Audio Workshop! -
Page 13: Warranty
(1) year from the date of purchase as shown on the purchaser’s receipt. The obligation of Signal Audio Workshop under this warranty shall be limited to repair or replacement (at our option), during the warranty period of any part which proves... - Page 15 Warranty registration form Please take the time to fill out this registration Form and send it to the address mentioned below. Or send this page threw e-mail to: info@signal-audio.com Signal Audio Workshop Abarbanel ST. Tel Aviv 66089 Israel P.O.B 5169 TLV 61051...