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Stereo 90 

 

Vacuum Tube Power Amplifier 

 
 

 

 
 

Owner’s Manual 

 
 

Rogue Audio, Inc. 

3 Marian Lane 

Brodheadsville, PA 18322 

 
 
 

Issue date: 03/10/04

 

Summary of Contents for Stereo 90

Page 1: ...Stereo 90 Vacuum Tube Power Amplifier Owner s Manual Rogue Audio Inc 3 Marian Lane Brodheadsville PA 18322 Issue date 03 10 04...

Page 2: ...g the Stereo 90 power amplifier 2 3 Installing the Stereo 90 into your system 3 4 Operation of the amplifier 5 5 Setting the tube bias 6 6 Troubleshooting 7 7 Owner and Warranty Registration Form 7 8...

Page 3: ...ugged The Stereo 90 amplifier has been painstakingly inspected for cosmetic flaws during and after assembly In order not to damage the cosmetic appearance of your amplifier it is important that you fo...

Page 4: ...et to 8 ohm To switch impedance setting 1 Using a wrench remove the outermost nut from the positive red binding post 2 Remove the 8 ohm tap green wire marked 8 from the binding post Be careful to leav...

Page 5: ...posite end into the power outlet It is recommended that the Stereo 90 and your preamp are plugged into the same wall outlet if possible perhaps using a power outlet strip to avoid creating a ground lo...

Page 6: ...ways that the output transformer can be connected to the tube circuit 1 Tetrode or Pentode connection In this configuration the highest power level is achieved but at the expense of significantly hig...

Page 7: ...bout any of these instructions please contact your dealer and have them bias the amplifier for you 1 Allow the amplifier to warm up for at least 30 minutes 2 Turn the preamplifier volume completely of...

Page 8: ...meter reading can be attained check the fuse 1 4 Amp fast blow If the fuse is bad replace the fuse and then set the bias If the bias will not maintain itself and the fuse blows again the tube should b...

Page 9: ...Fuses 4 2 10 Amp slow blow SPECIFICATIONS output power 90 WPC frequency response 5Hz 50 kHz 1dB THD 0 1 typ 1 at rated power input sensitivity 1 0 V RMS dimensions 14 W x 19 D x 7 H weight 60 pounds 2...

Page 10: ...ue Audio lightening power surges or acts of God Use of any other than Rogue Audio factory parts may void this warranty This warranty does not cover the cost of parts and labor which would be otherwise...

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