Rocktron Velocity 300 - Manual (Page 8)

8 9
Although operation of the Velocity 300 is simple once the proper connections have been made,
attention to the following precautions is essential to protect your equipment against failure and ensure
the long life of your Velocity® amplifier.
Power Output/Speaker Load
The Velocity 300 is capable of producing the following power output levels into each of these loads:
Unbridged (Stereo)
4 ohm load 150 watts
8 ohm load 75 watts
16 ohm load 37.5 watts (with both channels driven)
Bridged (Mono)
4 ohm load Not Recommended*
8 ohm load 300 watts
16 ohm load 170 watts
! Always be certain to use speaker cables to connect cabinets.
! Always be certain to use speakers or speaker cabinets capable
of withstanding the power provided in the above mentioned
applications. Rocktron is not responsible for speaker failure
resulting from use of this equipment.
! Never connect 2 outputs of the amplifier to the same speaker. This
would be equivalent to shorting the outputs of the amplifier together
and would shut the unit down immediately.
4. Operating Precautions
A feature truly unique to the Velocity line of power amps is Automatic Short Detection circuitry. Typically,
shorting the outputs of a high output power amplifier will cause amplifier failure and severely damage
internal components. The Automatic Short Detection circuit in the Velocity 300 will automatically detect
any shorts which may inadvertently occur across the amplifier’s outputs and immediately shut down the
unit to protect it against internal damage.
Should this condition occur, switch the unit off for approximately 10 seconds and make sure that the
cords from the amplifier outputs are properly connected. When the power is turned on again with the
proper connections, the amplifier will operate normally. It is important to note that two outputs from
the amplifier should never be connected to the same speaker, as this would be equivalent to shorting the
outputs together and will cause the unit to shut down.
In the unlikely event that the proper connections have been made and the unit still shuts down, we strongly
recommend that you first contact our Customer Support Department at the phone number shown on the
back cover of this manual before taking the unit to a dealer or repair shop for servicing.
5. Automatic Short Detection
When playing with other musicians, it often becomes a problem that the guitar can get “buried” under
the other instruments and cannot be distinguished easily. The front panel Definition control gives the
effect of bringing the guitar out of the cabinet so that it can be heard despite the other instruments.
Although it does not actually effect the volume of the amplifier, the Definition control can be adjusted
so that the guitar becomes more audible when playing with a band. Turning the Definition control fully
counterclockwise bypasses the definition circuit, while turning it fully clockwise provides maximum
definition.
6. Definition Controls