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i

 Standby Switch -

 The standby switch is used to turn off the high 

voltage to the amplifier's tubes, preventing damage while the amp is 
warming up. Please allow 30-60 seconds after switching the Reactor FR 
on before bringing it out of standby for normal use. 

o

 Ground lift 

– When there’s a hum or buzz in your system, the ground 

lift can often eliminate it. The ground lift works on all inputs. 

p

 Master Level Control

 - Adjusts the amplifier’s overall volume. 

a

 Tweeter Level

 – Adjusts the volume of the high frequency component 

of the amplifier’s sound. 

TONE TIP: The high-frequency response is “flat” with the Tweeter Level 
at 12 o’clock. The “sweet spot” will vary depending on your listening 
environment, ears, and the position/placement of the reactor RR.  Turn 
the control downwards for a warmer darker tone or increase for added 
brightness and sparkle. 

s

 Speaker Switch

 – Sets the function of the 

Speaker Jack

d

 as follows: 

Switch Setting 

Internal Speaker 

Jack Function 

ON: 

ON ON 

OFF: 

OFF

*

 ON 

EXT. AMP: 

In this position, the jack is converted from an output 
to an Input for the internal speaker, effectively 
converting the Reactor FR into a passive cabinet for 
use with an external amplifier.*

† 

 

*WARNING: Do not operate the internal amp with no speaker or load connected!

†  

NEVER connect an external amplifier to the speaker jack when the speaker 

switch is not set to 

Ext. Amp 

as doing so could damage both amps. 

f

 Cooling Fan 

 - This very quiet fan operates at a constant speed 

whenever the Reactor FR is powered on. 

g

 Power Input - 

This is where you connect the supplied AC line cord to 

provide power to the Reactor FR. The power inlet also houses the 

Fuse 

Compartment

 which must be opened to replace the fuse. In order to 

convert the Reactor FR from 115v (US) to 230v (EU) operation (or vice 
versa) remove, rotate, and replace the fuse compartment. 

Summary of Contents for Reactor FR

Page 1: ...Atomic Reactor FR THE WORLD S FIRST AND ONLY TUBE POWERED FULL RANGE GUITAR AMP PERSONAL MONITOR www atomicamps com OWNER S MANUAL...

Page 2: ...LLC 2009 Atomic Amplifiers LLC All rights reserved Atomic Amplifiers LLC 476 Grace Trail Orange CT 06477 646 201 9543 tel info atomicamps com www atomicamps com WARNING TO PREVENT FIRE OR SHOCK HAZAR...

Page 3: ...R FR USER MANUAL T A B L E O F C O N T E N T S 2 The Atomic Reactor 3 Summary of Components 4 Controls Connections 6 Using the Reactor FR 7 Rig Diagrams 8 Maintenance 9 Service 10 Trouble 11 Specs 12...

Page 4: ...is the result of our design team s tireless efforts to create a superior sounding amplifier for the modern digital guitar rig A timeless all analog showpiece the FR ensures that preamps modelers and s...

Page 5: ...or simulation however the Reactor FR is able to restore the musical characteristics and feel that we usually expect only from a well designed analog tube amp The speaker system consists of a 12 speak...

Page 6: ...nced XLR Input This female XLR type connector accepts a balanced or unbalanced line level signal t Balanced XLR Thru This male XLR connector produces exactly the same signal that is connected to the b...

Page 7: ...ase for added brightness and sparkle s Speaker Switch Sets the function of the Speaker Jackd as follows Switch Setting Internal Speaker Jack Function ON ON ON OFF OFF ON EXT AMP In this position the j...

Page 8: ...ur instrument or processor and set the Master Level of the Reactor FR to an appropriate level Adjust the tweeter level to taste REMINDER The Balanced XLR Thru is an output designed to pass the Balance...

Page 9: ...put of the Reactor FR whichever is convenient for you STEREO GUITAR RIG Connect the left and right outputs of a stereo processor to the inputs of two Reactor FRs to create a wide 3D sound DUAL MONO Co...

Page 10: ...as control is used to set the idle current in the output tubes properly matching the amp s performance characteristics to the type of tubes used Each different tube type and brand may require a slight...

Page 11: ...Q How do I go about getting my amp repaired A If your amplifier should require service you have two options The first is to take it to an authorized service center in your area A list of service cente...

Page 12: ...ker cab must be connected to the speaker jack If the switch is set to Ext Amp an external amplifier must be used to power the internal speaker Is the level control of the attached external device turn...

Page 13: ...ut 270 mv 9 5db at 1000 Hz Sensitivity Return for 50watts output Power Amp Input Impedance 100K ohm Tubes One 12AX7A tube Two 6L6GC tubes Fuse US Model 115V AC Slow Blow 3 15A EU Model 230V AC Slow Bl...

Page 14: ...re to follow all operating instructions including the OVERPOWERING of speakers alterations and modifications or act of nature Such determinations will be made by Atomic Amplifiers This limited warrant...

Page 15: ...ct subject to the terms of this limited warranty Any product repaired or replaced under this limited warranty will itself be warranted only for the remainder of the limited warranty period of the orig...

Page 16: ...www atomicamps com Atomic Amplifiers LLC 476 Grace Trail Orange CT 06477 646 201 9543 tel info atomicamps com www atomicamps com...

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