Radial Engineering Powertube Smart Sheet

RADIAL 500 SERIES
smart sheet
POWERTUBE™
MICROPHONE TUBE PREAMP
Order No. R700 0115
The PowerTube is a 12AX7 equipped tube microphone preamp that delivers 140 Volts to the plate
for optimal tube performance. The signal path begins with a convenient front-panel XLR for easy
connection in any studio. A Jensen transformer coupled input produces the warm Bessel curve that
has made Jensen a legend. The signal then passes through the tube-stage and 100% discrete
class-A output stage to deliver over +65dB of gain. Separate trim and level controls make it easy
to optimize signal to noise. Drive the PowerTube into the red for fun. A 10 segment LED bar graph
delivers clear and precise monitoring. This is augmented with an Air EQ that adds presence to voice
and a low-pass filter to eliminate unwanted low-frequency resonance. These features combine to
make the PowerTube a spectacular choice for all microphones.
FULL ENCLOSURE
EN
- 100% steel casing reduces magnetic
interferen
interference from other nearby modules that may cause pollution.
FEATURES
• High voltage 12AX7 tube gain stage
10 SEGMENT LED - Provides visual signal status as it monitors peaks to
deliver a clean, distortion-free signal to the mix buss and recording system.
• Jensen transformer coupled input
• 100% discrete with over +65dB gain
lets you set the input level going to the tube and class-A
TRIM - Control
C
circuit. Set
Se low for least distortion or high to add harmonic content.
• 10 segment LED bar-graph indicator
180º POLARITY - Use to phase-align two signals for improved stereo
imaging or as a creative element during the recording process.
APPLICATIONS
• The most demanding studio recording
GAIN - Le
Lets you adjust the overall drive circuit. When pushed hard,
the PowerTube
Powe
adds character and harmonics to the signal path.
• Warming up tracks by using the tube
• Adding character & grit to the voice
• Direct instrument recording with Omniport
ort
AIR - High
Hig frequency lift used to gently add presence to the signal
path for more
m
shimmer and clarity.
COOL FACTORS
FILTER - 80Hz high-pass filter removes low frequencies to help eliminate
excessive bass. It is particularly useful when layering acoustic tracks.
• Single space 500 series design
48V - Phantom
Pha
power for condensers is equipped with power-on LED and
recessed to prevent accidental use that could damage older ribbon mics.
• Fits in all ‘Lunchbox’ type racks
• Sounds absolutely amazing
MIC INPUT
INPU - XLR female connector is conveniently located on the front panel
and placed
place at the bottom to keep the cable out of the way.
• Built in filters to optimize signal path
OMNIPO
OMNIPORT- Rear mounted ¼” instrument input, allows guitar and bass to be
recorded direct. Available when used with Radial Workhorse racks.
Air Filter
+10
+5
POWER A
ASSIGN SWITCH - Toggles the current draw from the positive to the
negative rails enabling multiple PowerTubes to be used without power sag.
+0
-5
JENSEN TRANSFORMER - Jensen input transformer delivers near perfect
frequency response and exceptionally low noise making it ideal for tube preamps.
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Hz
High-Pass Filter
HIGH VOLTAGE TUBE - Employs a select 12AX7 tube with a non-radiating
charge-pump power supply to deliver 140 volts to the tube plates.
+10
+5
+0
100% DISCRETE CLASS-A - Output stage combines with the transformer and
tube to deliver 65dB of gain making the PowerTube ideal for just about
any microphone.
-5
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500
1k
2k
5k
10 k
20 k
Hz
studio vocal channel strip
PowerTube on bass
Live recording
The PowerTube is the ultimate front end for
your finest studio microphone. The Jensen
transformer-coupled front end quietly delivers
the full audio spectrum into the class-A tube
drive circuit for spectacular results.
Nothing sounds bigger and warmer than a tube!
Connect your bass to the Omniport instrument input
on the Workhorse, Cube or Powerstrip. Feed the
PowerTube into a Komit compressor for dynamic
control and then a JDX amp & speaker simulator to
capture the sound of a 4x12 half stack.
The single wide design and innovative
powering scheme allow you to use eight
PowerTubes in the Workhorse without
sacrificing dynamic range. This makes it
perfect for the most demanding live music
recording sessions.
Radial Engineering Ltd. • Workhorse 500 Series Smart Sheet © Copyright 2012 all rights reserved · www.radialeng.com · email [email protected] • Subject to change without notice • Made in Canada