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Table of Contents
Related Manuals for Cayin m-845D
Summary of Contents for Cayin m-845D
- Page 1 VACUUM TUBE MONO BLOCK POWER AMPLIFIER User's Manual REV：1.1...
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Page 2: Table Of Contents
Thanks for choosing CAYIN M-845D vacuum tube mono block power amplifier and please read the user's manual carefully before installation and operation. In order to prevent damage during transportation, the amplifier is packed with protective foams surrounding the tubes. Before installation and operation, please remove these foams to avoid any risks. -
Page 3: Package Contents
NOTE: CAYIN M-845D vacuum tube mono block power amplifier is designed and manufactured with our original parts and reaching the best results. We are not responsible for problems and damages caused by non-original parts replacement in the amplifier. Package Contents Please carefully check the package first and then open it. -
Page 4: Product Features
Product Features ◆ Hand-made construction with the finest point-to-point wiring ◆ EI output transformer with wide bandwidth and push transformer are applied. ◆ Specially designed toroid transformer for power supply. ◆ One piece of 6SN7 has been used in the preamp stage for voltage regulation. ◆... -
Page 5: Specifications
◆ To reduce the risk of electric shock, do not remove the cover. ◆ No user serviceable parts inside. Refer servicing to qualified service personnel. ◆ To reduce the risk of fire or electronic shock, do not expose the unit to rain or moisture. -
Page 6: Maintenance
Maintenance NOTE: ◆ Use the soft dry cloth to clean up the chassis regularly. ◆ Do not use any chemicals for cleaning. Warranty Service 1.This product is warranted for a period of twelve months beginning from the date of purchase. 2.The defective product must be returned to your dealer or our company for repairing when your dealer or our company accepts your requirement. -
Page 7: Precautions
Precautions Connected to power socket Connected to AC INPUT Connection of power cord: Connect the speaker cables and signal cable first and then insert the power cord into the power socket. NOTE: ◆ Connect the power only after finishing other connections. ◆... -
Page 8: Front Panel
Front Panel 1.Power Indicator/Mute Indicator 3.NFB.Indicator： Used to indicate the working state. The green The NFB. 0dB indicator will be on when it is NFB.0dB. indicator will be on when it is working normally. The NFB. -2dB indicator will be on when it isNFB. -2dB. The red indicator will be on when it delays to work. -
Page 9: Rear Panel
Rear Panel 1. BALANCE Signal Input Terminal 5. BIAS Selector Knob Used to connect balance output terminal. Used to choose the vacuum tube needs adjustment. Put it at “off” after the adjustment. 2. Signal Input Selector Channel Output Used to choose BALANCE or RCA signal. Used to connect with the channel of speaker. -
Page 10: Top Panel
Top Panel 1.845 Tube 2.300B Tube 3.845 Tube Hum Adjustment Knob Used to adjust the 845 tube hum sound. You can adjust the 845 hum sound to the lowest by knobbing deasil or widdershins. 4.845 Tube Bias Adjustment Knob 1). Choose the tube by BIAS SELECTOR knob; adjust the according BIAS ADJ. Knob; adjust the pointer of BIAS meter to the center. -
Page 11: Installation
Installation Carefully read and follow the manual for installation: ◆ Do not place the machine near heat sources such as radiators, heat registers or other products that produce heat. ◆ In order to avoid being overheated please keep the unit's ventilation open. ◆... -
Page 12: Audio Connection
Audio Connection Connection method of CAYIN M-845D with other audio equipments Take pictures below for your reference. To input terminal of left channel To input terminal of right channel To output terminal of pre-amplifier To input terminal of pre-amplifier To output terminal of CD player NOTE: BALANCE Socket：... -
Page 13: Speaker Connection
Speaker Connection SPEAKER（L） BLACK Check the impedance of your speakers: Attach the positive from your speaker to the 4 or 8 ohm terminal and the negative to the 0 ohm terminals separately. If your speakers are 6 ohm, 4 ohm or 8 ohm (recommended) terminal is preferential and it would not cause damage to the amplifier.Connecting the left and right speakers according to the guidance can make sure of the acoustic fidelity. -
Page 14: Turn On
Turning On Before turning on the amplifier please make sure all connections are right and power supply is stable. • Turn on the amplifier, The red indicator will be on. • The working indicator will be on after 30 seconds. It means that the amplifier is working normally. If the working indicator is off, please turn off the power and contact with our local agent or our company. -
Page 15: Troubleshooting
Troubleshooting Please follow the instruction in the manual in order to keep the amplifier work in its best state. If wrongly operated and you thought that would be troubles please check according to following tip to look for the exact reason. -
Page 16: How To Install Vacuum Tubes
How to Install Vacuum Tubes How to Install 9-Pin Vacuum Tubes How to Install 8-Pin Vacuum Tubes Pin No. 9 Pin No.1 Positioning Pin Applicable vacuum tube: Applicable vacuum tube: 、 5BK7、 12BH7、 12AU7( ECC82)、 12AX7( ECC83) KT150、 KT170、 KT88、 6550、 EL34、 6V6、 6SN7、 6SL7、 5AR4 etc.
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