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4

CAUTION – Do not operate the amplifier unless it is connected to a 
loudspeaker.  
 
 
 
Connecting the Stereo 90 to the preamplifier: 

 
The input connections from the preamplifier are made via RCA jacks on the rear 
of the amplifier. See figure 2. Be sure to use high quality interconnect cables – 
they do make a difference.   
 

 

 
 

 

Figure 2.  Rear panel layout 

 

 

 
Connecting the Stereo 90 to the power outlet: 

Connect the IEC end of the detachable power cord (provided) to the amplifier, 
and plug the opposite 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 loop.  
 

Amplifier Location: 

The Stereo 90 depends on natural convection flow patterns for proper cooling. To 
ensure proper cooling, the unit should be located in a position so that the airflow 
is not impeded.  The unit should not be placed in a fully enclosed shelf, and 
should have a minimum of 8 inches of free space above it, and 6 inches of free 
space on either side.  
 
 
 
 

RCA 
Inputs 

Right Channel
Binding Post

 

Left Channel

Binding Post

Ultra Linear/ 
Triode Switch 

Main Fuse 

Power In 

Содержание Stereo 90

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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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