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TubePRE

Single-Channel Tube Mic-Preamplifier w/ VU Meter

User's Manual

VERSION 1.0

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Summary of Contents for TUBEPRE

Page 1: ...TubePRE Single Channel Tube Mic Preamplifier w VU Meter User s Manual VERSION 1 0...

Page 2: ...ht to change or improve design of the product at any time without prior notice This warranty does not cover claims for damage due to abuse neglect alteration or attempted repair by unauthorized person...

Page 3: ...re purchased or to the Presonus factory in the U S in the original packaging or a replacement supplied by Presonus with all transportation cost and full insurance paid each way by the purchaser or own...

Page 4: ...2 2 Front Panel 4 2 3 Preamplifier Section 4 2 4 Back Panel 6 3 1 Operation 8 3 2 Dynamic Microphones 8 3 3 Phantom Powered Microphones 8 3 4 Instrument Input 8 3 5 Some Thoughts on Vacuum Tubes 8 3...

Page 5: ...is designed to meet a multitude of professional audio applications If you have any questions or comments in regards to this or any other piece of Presonus equipment please fell free to contact us Ple...

Page 6: ...microphone and that the signal will be free of distortion due to insufficient power Phase Reverse This switch enables the user to invert the phase of a microphone if phase cancellation is noticed when...

Page 7: ...trument Input The TubePRE has a separate XLR and 1 4 connector on the back of the chassis for signal input from microphones XLR or instruments 1 4 Drive The TubePRE provides a Drive potentiometer for...

Page 8: ...Reverse Switch Drive Control 0 to 20dB 20db Pad Gain Control 0 to 40dB 80Hz filter Backlit VU meter 2 3 Preamplifier Section Phantom power is available for the input of the TubePRE The 48 volts are s...

Page 9: ...ful feature for rapidly reducing the level coming into the TUBEPRE and thus preventing the input signal from distorting the input This may occur due to a high output level from a microphone or line de...

Page 10: ...in This control governs the amount of boost to the signal being processed by the preamplifier Dynamic mics and instruments without preamps normally require more gain than condenser mics and instrument...

Page 11: ...7 1 4 phone plug wiring input and output TIP High SLEEVE GND The output 1 4 phone plug is unbalanced...

Page 12: ...always necessary when close mic ing to avoid clipping overdriving the preamplifier 3 4 Instrument Input The instrument input is designed to handle 1 4 plugs from instruments such as guitars and basses...

Page 13: ...lugs 2 Carefully remove the plastic hex nut that is on the unbalanced output and the instrument input 3 Remove the left side panel 4 Remove the black chassis 5 Place your thumb on the backside of the...

Page 14: ...uiet for the device to process it On Recording When using the TubePRE as a front end for a recording device such as the Presonus FIREstation it is important to watch your output levels For example usi...

Page 15: ...ply that was not included with the unit voids the warranty of the TubePRE and may cause damage to the unit or the user It is strongly recommended that you refer any service issues to Presonus Can the...

Page 16: ...me cases this may be the desired effect Whenever I turn up the tube drive all the way my signal sounds distorted Why is this The tube drive feeds the signal into the tube The more signal that is appli...

Page 17: ...oor 94dBu Signal to Noise 90dB Power Supply Rejection 98dB Amplifier Type Dual Servo Input Connectors XLR and 1 4 Input Impedance XLR 1 3k Ohms Input Impedance High Z 1 4 1Meg Ohms Output Output Imped...

Page 18: ...r Supply Type Linear External Transformer Input 16 VAC 1000mA Power 16 WATTS Physical Weight 4lbs Size 1 3 U Rack Dimensions 5 5 X 5 5 X 1 75 Mounting Universal Rack Tray Insert Chassis Steel Front Pa...

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