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Introduction

Introduction

Congratulations on your purchase of the Velocity

®

 120 guitar power

amplifier! Designed to provide maximum reliability under even the most extreme

conditions, the single-rack space Velocity

®

 120 provides 60 watts per channel stereo

or 120 watts mono-bridged when driving an 8 ohm load.

The 120 incorporates an automatic short-detection circuit which, if a short

should occur, will automatically shut the unit down before any damage can be done

to any of its internal components. Once the problem is detected and corrected, the

unit can be turned back on and will operate normally.

In addition, the amplifier also provides a front panel Definition control for

each channel. This control adjusts a specific pre-defined frequency range which will

allow the guitar to be better distinguished from other instruments when playing with

a band.

This User's Manual details various applications and functions for the

Velocity

®

 120. After reading it, please keep it for future reference.

Summary of Contents for Velocity 120

Page 1: ...L I F I E R U S E R S M A N U A L May be covered by one or more of the following U S Patents 4538297 4647876 4696044 4745309 4881047 4893099 5124657 5263091 5268527 5319713 and 5333201 Other patents pending Foreign patents pending ...

Page 2: ...STALLATION When installing the Velocity 120 in your rack it is best for ventilation and heat dissipa tion that the unit occupy the bottom space of your rack It is also recommended that a vacant space is left above the power amp if possible to further improve ventilation OPERATING TEMPERATURE Do not expose this unit to excessively warm or cold temperatures This unit is designed to operate between 3...

Page 3: ...l 3 Connections 4 Stereo Applications 4 Mono Bridged Applications 5 Operating Precautions 6 Power Output Speaker Load 6 Fuse Replacement 7 Unique Features 8 Automatic Short Detection 8 Definition Control 8 Specifications 9 Contents Contents ...

Page 4: ...rt shouldoccur willautomaticallyshuttheunitdownbeforeanydamagecanbedone to any of its internal components Once the problem is detected and corrected the unit can be turned back on and will operate normally In addition the amplifier also provides a front panel Definition control for eachchannel Thiscontroladjustsaspecificpre definedfrequencyrangewhichwill allowtheguitartobebetterdistinguishedfromot...

Page 5: ...control fully counter clockwise bypasses the Definition circuit while turning it fully clockwise provides maximum Definition This control determines the output level for Channel 2 This control determines the mid frequency content for Channel 2 Turning this control fully counter clockwise bypasses the Definition circuit while turning it fully clockwise provides maximum Definition 1 POWER switch 2 P...

Page 6: ...IDGE switch in When pressed IN the Velocity 120 operates as a mono unit with increased output power Channel 2 becomes inoperable in this condition In the OUT position the unit operates as a normal stereo amplifier These standard jacks provide outputs for Channel 1 to speaker cabinets Do not connect these outputs to a load of less than 4 ohms or less than 8 ohms in mono bridged mode These jacks are...

Page 7: ...4 Connections Connections StereoApplications ...

Page 8: ...5 MonoBridgedApplications ...

Page 9: ...0 design there is not a large variance in output level when comparing various impedance loads Note Rocktron does not recommend using the Velocity 120 in bridged mode when connected to a load of less than 8 ohms However using the Velocity 120 in bridged mode with an 8 ohm load produces the same output level 120 watts as would be achieved with a 4 ohm load therefore using a 4 ohm load would provide ...

Page 10: ...own below Note A small compartment is also provided within the fuse cover module for storing a spare fuse Use a small flat screwdriver as shown to slide the fuse cover out from the power inlet module The fuse can be found inside the fuse cover module after it is pulled out After replacing the fuse with another of identical specifications push the fuse cover module fully back into place ensuring th...

Page 11: ...ame 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 or fax number shown on the back cover of this manual before taking the unit to a dealer or repair shop fo...

Page 12: ...atts per channel 4Ω both channels driven 50 watts per channel 8Ω both channels driven 30 watts per channel 16Ω both channels driven 120 watts 8Ω 95 watts 16Ω 22dBu 30dBu 37dB 81dB referenced to 1 watt over 100dB 015 THD 1dB 20Hz 20KHz Definition control OFF 450 watts 3 75 amps 120VAC Rocktron Corporation 2870 Technology Drive Rochester Hills MI 48309 Customer Service 810 853 5150 Fax Number 810 85...

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