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Perseus
Vacuum Tube Preamplifier
Owner’s Manual
Rogue Audio, Inc.
3 Marian Lane
Brodheadsville, PA 18322
Issue date: 02/01/06
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INTRODUCTION
Congratulations on your purchase decision! We at Rogue Audio truly believe that
our preamplifiers provide the “smartest” value in high-end audio. If you have
never owned a vacuum tube preamplifier you will be thrilled by the silky-smooth
sound and incredible detail that only a tube preamplifier can provide. And with
the Perseus preamplifier, you can be sure that you are getting the very best in tube
amplification. We at Rogue Audio are extremely proud of our products and want
you to enjoy them to their fullest potential. So please, take the time to read
through this short manual so that you can be confident that you have set up your
preamplifier properly.
UNPACKING THE PERSEUS POWER PREAMPLIFIER
Tools required: none
WARNING - This preamplifier uses voltages that could cause injury or
death. Never open the preamplifier while it is plugged in, and always
wait at least one hour after turning the unit off to unplug and open the
unit. Lethal voltages can remain in the electronics after the unit is
unplugged.
The Perseus preamplifier has been painstakingly inspected for cosmetic flaws
during and after assembly. In order not to damage the cosmetic appearance of
your preamplifier it is important that you follow the unpacking instructions
carefully.
1. Remove the small corrugated tube containing the power cord, and remote.
2. Carefully lift the preamplifier out of the box, and remove the foam pads and
plastic bag.
3. The Perseus can be used either with or without the tube cage. To remove the
tube cage, first unscrew 10 cover screws. Lift the cover off, and remove the 4
nuts holding the tube cage in place. Replace the cover prior to use.
4. Save the packing materials. The packing materials and box have been
carefully designed to protect your valuable equipment during shipping so you
don’t want to throw them away.
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12AU7
Tubes
Power
Switch
Tube
Cage
Selector
Switch
Volume
Balance
Mute
Switch
Bypass
Switch
Figure 1 Perseus Preamp
INSTALLING THE PERSEUS INTO YOUR SYSTEM
Connecting the Perseus to two channel sources:
Connections are made on the rear panel of the preamplifier and are shown in
Figure 2. The input connections for the channel source material are made via
RCA Jacks. There are 3 line level inputs including CD, Tuner, and AUX. There is
also one input for a phonograph. A five-way lug is provided for grounding the
turntable to the preamplifier.
Outputs
HT Input
Phono
Inputs
Ground
Figure 2 Perseus Rear Panel
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Connecting the Perseus to multi channel sources:
The Home Theater input is to the far left of the unit. It is sometimes desirable to
combine two channel music systems with multi channel home theater systems. In
such cases it is common to share speakers and amps between systems. The
Perseus would then be used with two channel sources such as CD Players,
Turntables, and Tuners etc. A separate Processor or Multi Channel Preamp would
be used with multi channel sources such as DVD movies. The Peseus HT IN input
allows the Processor output to be routed directly to the power amps, effectively
bypassing the Perseus, without having to unplug interconnects. The front two
main channel outputs from the Processor would be connected to the Perseus HT
IN input.
Connecting the Perseus to an amplifier:
The outputs are arranged to the left of the input jacks. The variable outputs are
controlled by the volume control and should be connected to the power amplifier
or sub-woofer. The fixed output is not controlled by the volume control and is
used for tape recording.
Connecting the Perseus to power outlet:
Connect the IEC end of the detachable power cord to the preamplifier, and plug
the opposite end into corresponding outlet. It is recommended that both the
Perseus and your power amplifier are plugged into the same wall outlet if possible
(perhaps using a power outlet strip). This is to avoid creating a ground loop.
Connecting the Perseus to a turntable:
Connect the output of the turntable, via RCA jacks, directly to the Perseus
through the phono input. The phono section in the Perseus can be configured to
amplify the vast majority of phono cartridges. Cartridge loading (resistance and
capacitance) and gain are accessible with the cover removed. See figure 3 for
switch locations. The Perseus contains hazardous voltages so be sure to unplug
the unit prior to removing the cover.
SW1,SW2
SW3,SW4
SW5,SW6
Figure 3 Perseus Internal Switch Location
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Cartridge Loading can be changed using switches SW1, SW2, SW3, and SW4, as
shown in Figure 3. The values are printed on the printed circuit board are listed in
the table below
Switch
Parameter
A
B
C
D
SW1,SW2 Capacitance
SW3,SW4 Resistance
(UP) 150 pF
100 ohm
(Down) 0 pF
300 ohm
NA
NA
1000 ohm 47K ohm
The gain of the phono section can be changed using SW5 and SW6 as shown in
Figure 3. The switch settings are printed on the printed circuit board. The two
setting are mm (XXX dB) and mc (YYY).
Preamplifier Location:
The Perseus is an open tube design and 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. In addition, the unit should have a
minimum of 2 inches of free space above it.
OPERATION OF THE PREAMPLIFIER
Powering up the System:
After all proper connections have been made, you are now ready to turn the
Perseus preamplifier on. The power on/off switch is on the front of the amp.
After approximately ten seconds, the high voltage supply will turn on. After and
additional ten seconds, the outputs will disconnect from ground and the preamp is
ready. After turning on the preamplifier, turn on the power amplifier and source
material and you are ready for listening.
NOTE - This unit will not play for approximately 20 seconds after
power on while the tubes warm up.
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Switches and Controls:
The Perseus is equipped with volume, balance, source, power, mute, bypass, and
a remote volume.
•
•
•
•
•
•
Volume – adjust gain from 0 to XXX dB
Balance - full left and right channel attenuation
Source – selects source material (PHONO, CD, TUNER, and AUX)
Power – on/off operation
Mute - leaves preamplifier on while muting output.
Bypass – As explained in the Installation Section, the Bypass switch routs the HT IN input
directly to the outputs, effectively bypassing the preamp.
Remote Volume Control – The Perseus is equipped with an analog remote volume control
feature. The volume may be adjusted manually using the knob on the front panel, or by using
the remote control provided.
•
TROUBLESHOOTING
Speaker Hum
• If hum can be heard from more than a few inches from the loudspeaker, there
is probably a ground loop. Be sure to have the amp and all sources plugged
into the same outlet if possible. If this fails to cure the hum, call customer
service at Rogue Audio for further advice.
Unit does not turn on
• Check that the power cord connection is secure
Unit does not play
• Ensure that the interconnects are connected to the proper input or output.
• Ensure that the interconnects are connected securely.
One channel does not play
• Ensure that the balance pot is centered.
• Ensure that the tubes are seated correctly and securely
For further problems, please call Rogue Audio Technical Support at 570-992-9901.
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OWNER AND WARRANTY REGISTRATION FORM
Included with this manual is an Owner and Warranty Registration Form. Please
take a minute to fill out this card and return it to Rogue Audio. This card must be
returned within 30 days of purchase to validate the warranty.
SPECIFICATIONS
Frequency Response
THD
10 Hz – 50 kHz 61 dB
< 0.1% typ, < 1% at rated power
XX dB
Gain Stage
Phono Gain
YY dB
Rated Output
Maximum Output
Dimensions
1 Volt RMS
ZZ Volts
18 1/8” x 14” x 2 5/8”
Weight
20 Lb
Shipping Weight
Power Requirements
25 Lb
115/230V – 50/60Hz
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LIMITED WARRANTY
Warranty Period
This product has been manufactured under the highest standards of quality and workmanship. Rogue Audio
Inc. (hereinafter “Rogue Audio”) warrants this product against defects in material or workmanship as
follows:
With the exception of vacuum tubes, Rogue Audio warrants to the original purchaser of this product all
parts of this product against defects in material and workmanship for a period of three years from the date of
retail purchase. Rogue Audio warrants the vacuum tubes for a period of six months from the date of retail
purchase. Any defective parts will be replaced free of charge, excluding shipping and handling.
Proof of purchase in the form of a bill of sale or recited invoice which indicates that the product is within
the warranty period must be presented to obtain warranty service. Rogue Audio suggests that the purchaser
retain the dealer’s bill of sale as evidence of the date of retail purchase.
What’s Not Covered
This warranty does not cover cosmetic damage or any damage that results from product misuse, product
abuse, installation error, connection to an improper voltage supply, accident, improper maintenance,
alterations, modifications not authorized in writing by Rogue 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 provided without charge
under this warranty, obtained from any source other than Rogue Audio.
This warranty applies only to consumer use of this product and does not cover any product that is used in
any trade or business, or in an industrial or commercial application.
This warranty applies only to the original purchaser of this product when purchased from an
Authorized Rogue Audio dealer.
This warranty is valid only in the United States.
YOUR RIGHTS
ROGUE AUDIO LIMITS ITS OBLIGATIONS UNDER ANY IMPLIED WARRANTIES UNDER STATE
LAWS TO A PERIOD NOT TO EXCEED THE WARRANTY PERIOD. SOME STATES DO NOT
ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, AND SOME STATES
DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL
DAMAGES, SO THE ABOVE LIMITATIONS OR EXCLUSIONS MAY NOT APPLY TO YOU. THIS
WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY HAVE OTHER
RIGHTS WHICH MAY VARY FROM STATE TO STATE.
To Obtain Service
To obtain service, you must contact Rogue Audio and obtain a return authorization number. The product
must be delivered to Rogue Audio in its original packaging prepaid at the following address:
Rogue Audio Inc.
3 Marian Lane
Brodheadsville, PA 18322
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