Instruction/ maintenance manual of the product Stereo 90 Rogue Audio
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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.
1 TABLE OF CONTENTS 1) Introduction 2 2) Unpacking 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) Troubles.
2 INTRODUCTION Congratulations on your purchas e decision! We at Rogue Audio truly believe that our amplifiers provide the “smartest” valu e in high-end audio. If you have never owned a vacuum tube amplifier you w ill be thrilled by the silky-sm ooth sound and incredible detail that only a tube am plifier can provide.
3 Figure 1 Tube and Deck Layout INSTALLING THE STEREO 90 INTO YOUR SYSTEM Connecting the Stereo 90 to the Loudspeakers: The Stereo 90 provides options for eith er 4 or 8 ohm speakers. The impedance selected will depend on the speakers use d. Consult either the owner’s manual for your speaker or your local dealer to determine the correct choice.
4 CAUTION – Do not operate the amplif ier unless it is connected to a loudspeaker. Connecting the Stereo 90 to the preamplifier: The input connections from the preamplif ier are made via RCA jacks on the rear of the amplifier. See figure 2. Be sure to use high quality interconn ect cables – they do make a difference.
5 OPERATION OF THE AMPLIFIER After all proper connections have been made, you are now ready to turn the Stereo 90 amplifier on. The power on/off switch is on the front of the amp. Some preamplifiers and sources can generate dangerous transients that can damage loudspeakers.
6 SETTING THE TUBE BIAS Tools required: bias tool (provided with amplifier) The output tubes (the big ones) need to be “biased’ with a grid voltage that controls the flow of electri cal current through the tube. T ube biasing on the Stereo 90 amplifier has been designed to be both simple and effective.
1 8) Rotate the switch back into the null (first) posit ion for operation. As it is a quick operation, the tube bias should be checked on a regular basis. TROUBLESHOOTING Speaker Hum – If hum can be heard from more than a few inches from the loudspeaker, there is probably a ground loop.
2 FUSE VALUES Main fuse located on rear panel (1) – 5 Amp slow blow Tube Fuses (4) – 2/10 Amp slow blow SPECIFICATIONS output powe r 90 WPC frequency resp onse 5Hz – 50 kHz ± 1dB THD < 0.
3 LIMITED WARRANTY Warranty Per iod This product has been manufactured under th e highest st andards of quality and workmanship. Rogue Audio Inc. (hereinafter “Rogue Audio”) warrants this produc t.
An important point after buying a device Rogue Audio Stereo 90 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Rogue Audio Stereo 90 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Rogue Audio Stereo 90 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Rogue Audio Stereo 90 you will learn all the available features of the product, as well as information on its operation. The information that you get Rogue Audio Stereo 90 will certainly help you make a decision on the purchase.
If you already are a holder of Rogue Audio Stereo 90, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Rogue Audio Stereo 90.
However, one of the most important roles played by the user manual is to help in solving problems with Rogue Audio Stereo 90. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Rogue Audio Stereo 90 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
