Rocktron 300 User Manual
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Instruction Manual
May be covered by one or more of the following: U.S. Patents #4538297, 4647876, 4696044, 4745309,
4881047, 4893099, 5124657, 5263091, 5268527, 5319713, 5333201, 5402498 and 5493617.
Other patents pending. Foreign patents pending.
®
GUITAR POWER AMP
Velocity® is a registered trademark of GHS Corporation
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Copyright © 2009 GHS Corporation
All Rights Reserved.
Your Velocity®300 has been tested and complies with the following Standards and Directives as
set forth by the European Union:
Council Directive(s): 89/336/EEC Electromagnetic Compatibility
Standard(s): EN55013, EN50082-1
This means that this product has been designed to meet stringent guidelines on how much RF
energy it can emit, and that it should be immune from other sources of interference when properly
used. Improper use of this equipment could result in increased RF emissions, which may or may
not interfere with other electronic products.
To insure against this possibility, always use good shielded cables for all audio input and output
connections. Also, bundle audio cables separately from the AC power cables. These steps will help
insure compliance with the Directive(s).
For more information about other Rocktron products, please see your local dealer or one of our
importers closest to you (listed on the enclosed warranty sheet).
CONTENTS
General Safety Precautions 4
1. Introduction 5
2. Velocity Front Panel 6
3. Velocity 300 Back Panel 7
4. Operating Precautions 8
5. Automatic Short Detection 9
6. Denition Controls 9
7. Stereo Connection 10
8. Mono/Bridged Connection 11
9. Fuse Replacement 12
10. Specications 13
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CONTENTS
General Safety Precautions 4
1. Introduction 5
2. Velocity Front Panel 6
3. Velocity 300 Back Panel 7
4. Operating Precautions 8
5. Automatic Short Detection 9
6. Denition Controls 9
7. Stereo Connection 10
8. Mono/Bridged Connection 11
9. Fuse Replacement 12
10. Specications 13
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1. Introduction
Congratulations on your purchase of the Velocity® 300 guitar power amplier! Rocktron has been
designing power ampliers specically for guitar players since the early 1990's. The Velocity 300 is
the latest and greatest in our line of Velocity power amps.
The Velocity 300 provides 150 watts/channel when used in stereo applications or 300 watts mono
bridged into a 8 ohm load!
The Velocity 300 has a unique “Reactance” circuit that actually replicates the output impedance of tube
ampliers—so you can get the same great sound that a tube amplier delivers in a reliable solid state
design. And, because it is a variable control, you can customize your Velocity 300 to sound like any of
your favorite tube amps. Best of all, this feature is available in the mono bridged mode too!
In addition, the Velocity 300 has “Denition” controls to give you that little bit of edge you need to
bring your playing out in the mix. It also has automatic short circuit protection, which detects problems
and shuts down the amplier before any internal damage can be done.
Other Features:
• 115/230 VAC voltage selector switch.
• An AC power detect circuit, which ensures that the amplier outputs shut down rst when AC is
removed. This will guard against any thumps or pops that could otherwise occur, potentially damaging
speakers when power is cut to the amplier.
• Differential input buffers to eliminate ground loop hum coming from the power amp.
• Over-temperature protection
• Rock-solid design to provide reliable, trouble-free use.
GENERAL OPERATING PRECAUTIONS
NOTE: IT IS VERY IMPORTAN T THAT YOU READ THIS SECTION TO
PROVIDE YEARS OF TROUBLE FREE USE. THIS UNIT REQUIRES CAREFUL
HANDLING.
All warnings on thi s equipment and in the operating instructions should be
adhered to and all operating instructions should be followed.
Do not use this equipment near water. Care should be taken so that objects do
not fall and liquids are not spilled into the unit through any openings.
The power cord should be unplugged from the outlet when left unused for a
long period of time.
DO NOT ATTEMPT TO SERVICE THIS EQUIPMENT. THIS EQUIPMENT
SHOULD BE SERVICED BY QUALIFIED PERSONNEL ONLY. DO NOT MAKE
ANY INTERNAL ADJUSTMENTS OR ADDITIONS TO THIS EQUIPMENT AT
ANY TIME. DO NOT TAMPER WITH INTERNAL ELECTRONIC COMPONENTS
AT ANY TIME. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY VOID
THE WARRANTY OF THIS EQUIPMENT, AS WELL AS CAUSING SHOCK
HAZARD.
OPERATING TEMPERATURE
Do not expose t his unit to excessive heat. This unit is desi gned to operate
between 32° F and 104° F (0° C and 40° C). This unit may not function properly
under extreme temperatures.
General Safety Precautions
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1. Introduction
Congratulations on your purchase of the Velocity® 300 guitar power amplier! Rocktron has been
designing power ampliers specically for guitar players since the early 1990's. The Velocity 300 is
the latest and greatest in our line of Velocity power amps.
The Velocity 300 provides 150 watts/channel when used in stereo applications or 300 watts mono
bridged into a 8 ohm load!
The Velocity 300 has a unique “Reactance” circuit that actually replicates the output impedance of tube
ampliers—so you can get the same great sound that a tube amplier delivers in a reliable solid state
design. And, because it is a variable control, you can customize your Velocity 300 to sound like any of
your favorite tube amps. Best of all, this feature is available in the mono bridged mode too!
In addition, the Velocity 300 has “Denition” controls to give you that little bit of edge you need to
bring your playing out in the mix. It also has automatic short circuit protection, which detects problems
and shuts down the amplier before any internal damage can be done.
Other Features:
• 115/230 VAC voltage selector switch.
• An AC power detect circuit, which ensures that the amplier outputs shut down rst when AC is
removed. This will guard against any thumps or pops that could otherwise occur, potentially damaging
speakers when power is cut to the amplier.
• Differential input buffers to eliminate ground loop hum coming from the power amp.
• Over-temperature protection
• Rock-solid design to provide reliable, trouble-free use.
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