Owner`s manual
Owner’s Manual
DECWARE / High Fidelity Engineering Co.
1202 N.E. Adams Street Peoria IL 61603 USA
309-671-2428 Fax 309-672-1060 e-mail: fidelity@decware.com
www.decware.com (C)2000 All Rights Reserved
GETTING STARTED
Save your shipping carton. It has been designed to withstand the abuse of UPS. We tested it
by dropping amps off the roof of our facility onto the parking lot. The fact that your amp is
perfect condition is testimony that shipping carton works. Should you ever need to send your
amp back for warranty repairs, or trade it in on something else, you will NEED the original
shipping carton.
TUBES
Your amp comes with premium tubes. The output tubes are from SVETLANA and are made in
St. Petersburg, Russia. These special tubes were originally designed for video applications in
the Russian military. Because of this, they have much wider bandwidth than common audio
tubes. The output tubes that come with your amplifier are factory matched and should last
between 4 months and 2 years depending on the sensitivity of your speakers and how often you
clip the amp. The input tube (smallest one) can be either a 6N1P, a 6DJ8, or a 6922. Each
effect a different signature so it is nice to collect all three for experimentation. Any 5U4 rectifier
will work (largest tube) and the popular 6BQ5/EL84 output tubes can be used in place of the
SV83 output tubes as a direct plug-in replacement.
Look at the photo on the front of
this manual to see which tubes go where.
Now that you know which tubes do what, carefully install them into the amplifier. The rectifier
(5U4) should last for many years. If your amplifier was shipped with a Chinese 5U4 you will
notice a small flash inside the tube when you first turn on the amp, and you will hear a
mechanical vibration inside the tube as it resonates with 60 cycle ac. This causes no harm to
the amplifier and is no cause for alarm. Most 5U4 tubes (especially new old stock USA made
tubes) do not do this, but of the current manufactured 5U4 tubes available, we feel the Chinese
is one of the better sounding.
BEFORE POWERING UP
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