Specifications
8
PREAMPLIFIER OPERATION
8.1 Turning the power ON
8.2 Setting the gain
8.2 Using the VTP-100 as a DI-BOX
8.3 Using the VTP-100 as a Re-AmpTube
The power switch is located on the VTP-100 front panel.Turn on the power switch,
the meter iluminates red.
The VTP-100 has a 30 seg
First, turn the gain control fully counter-clockwise and check that the 48V phantom power is off.
Connect a microphone and then turn on the phantom power if required.
Simply increase the Gain Mic/Line until the optimum level is reached with the output level in 5.
If the peak indicator flashes red excessively with the gain control in the fully
counterclockwise position or engage the -20dB attenuator.
The input meter indicate only line levels,set the meter in VU or PPM output reading to
check optimum level output.,use the PPM HOLD to view maximum peaks if it is desire.
The 1/4” jack combo connector on the rear panel is used as vacuum tube direct box.
This input has an impedance of 1M ohms and can accommodate a wide variety of high
impedance input sources, including bass guitar, keyboards, electric guitars, piezo
transducers etc.
In this mode, the GAIN Mic/Line that controls the gain of the stage
,the -20 dB Pad, the Phantom power and the input line meter are not available.
The HPF,phase reverse switch,the level output, the output meter and the PPM switch
are active.
The 1/4”jack Hi-z output connector on the rear panel is available only with the
Pad in -20d (Re-Amp Tube) in this mode all the function are active, the trimer adjustement
control is designed to mimic Hi-Z guitar levels.
The VTP-100 in this mode convert +4dB line level outputs to guitar hi impedance level,
to can connecting to guitar input amplifiers,
The Re-Amp Tube mode pass the audio signal thru a Class - A tube amplifierthis is very
usefull to increase the 2°harmonic content response.
A guitar player can record a flat direct guitar track to tape or hard disk and
Re-Amp Tube later into any instrument amplifier.
Soft-start warm-up with relay output muting after this time
the unit are ready to work.
discrete input