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Thank you very much for choosing Shuguang Audio Classic Series vacuum tube amplifier
(845 version).
When opening the package, please carefully unpack all tubes and install each tube to its
marked location on the amplifier. Please double check to ensure a safe and secure
connection for each tube in its socket.
Please read this manual in its entirety before you turn on the amplifier for the first time.
About Shuguang Audio
Shuguang Electron Group (aka Shuguang Electron) currently is the world's largest vacuum
tube producer. The group was formed in 1958 and over the past decades, Shuguang has
designed and manufactured many high quality audio vacuum tubes and they are used on
tube audio products under many brands.
Shuguang Dongsheng Electronics Co. Ltd (aka Shuguang Audio) is a subsidiary of
Shuguang Electron Group, specialized in high end vacuum tubes and tube audio design,
manufacture and distribution.
This Shuguang Classic series vacuum tube amp is one of Shuguang Audio's many
products.
Caution!
This product should only be used with its specified power supply voltage /
frequency to ensure safety and longevity.
If the product is not in use for extended period of time, please unplug the unit
from your power supply.
When the product is powered on, do not touch the vacuum tubes with bare
hands or any materials that could melt at high temperature. Tubes operate at
extremely high temperature and could cause serious burn to exposed skin.
Children should be kept away from a tube amplifier, no matter if it is powered on
or off for safety precautions.
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Table of Contents
Related Manuals for Shuguang Classic 845 Series
Summary of Contents for Shuguang Classic 845 Series
- Page 1 Shuguang Electron Group (aka Shuguang Electron) currently is the world’s largest vacuum tube producer. The group was formed in 1958 and over the past decades, Shuguang has designed and manufactured many high quality audio vacuum tubes and they are used on tube audio products under many brands.
- Page 2 Each channel has two output terminals – 4 ohm and 8 ohm. Under no circumstance should the product be connected with speakers at both 4 ohm and 8 ohm terminals at the same time. This will overload your amp and cause serious damages.
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Page 3: Specifications
1. CV181-Z 2. 300B-Z 3. 845B 2. Front: Power on/off 3. Rear: Please note the fuse is located below the power socket. Fuse value is as indicated on the back panel. Specifications: This product is of a high fidelity single ended Class A design. As mono power amp, you must use a matching preamplifier in order to replay music. - Page 4 Operational Instructions: 1. Install all tubes to its corresponding sockets securely. Press down gently but ensure a tight secure connection. 2. Select 4ohm or 8 ohm speaker connectors based on your speakers specification and connect both channels correctly and securely. 3.
- Page 5 3. Use a multi-meter and set it to V(DC) position. Connect the two probes from the multi-meter to the + and – of the bias test point (1). Red probe for +, black probe for –. Use a small screw driver to adjust the bias adjustment spot (2) until the multi-meter reading is at 80-90mV.
- Page 6 It’s highly recommended to have a technician to check out the amp thoroughly before resuming normal use. Warranty: Please consult your local distributor for warranty policy. Manufacturer: Shuguang Dongsheng Electronics Co., Ltd. Phone: 0731-4177129 Fax：0731-4112838...
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Questions and answers
Speaker connection on 845-7. Which is positive and negative 0? 4-8?
The Shuguang Classic 845 Series 845-7 uses 4-ohm or 8-ohm speaker connectors based on your speaker’s specification. You must connect both channels correctly and securely, ensuring proper polarity (positive to positive, negative to negative). Specific labeling for positive and negative terminals is not provided, but standard red/black color coding is implied.
This answer is automatically generated