VACUUM TUBE ASSEMBLY DIAGRAM
Congratulations on your purchase of the 14-tube 50Wpc Raven
Audio Shadow Reference Stereo Amplifier. Locate your amplifier
between the speakers if possible and preferably not on carpet
without using amp stands. Best practice is to use longer
interconnects to the amp and shorter speaker cables.
Insert tubes with care according to the diagram and check tube
orientation with their sockets. Wipe off the tubes before first use.
All Raven Audio amplifiers are auto-biasing so you never have to
be concerned when inserting compatible power tubes, but
always use matching pairs.
PRODUCT DETAIL
Specifications
Output: 50Wpc
Frequency response: 20Hz - 20kHz
Inputs: 1/pr balanced XLR, 1/pr single-ended RCA
Speaker terminals: 4 and 8 ohm
Recommended speaker sensitivity: 87dB - 96dB
Dimensions: W 19.5" x D 9.5" x H 13.5"
Weight: 68lbs
Tube Complement
4 x 12J5 – Inner pair first stage, outer pair phase inverters
2 x 12SN7/12SX7 – Driver tube
2 x 12SN7 – Cathode follower
2 x 12SN7 – Auto-bias
4 x 6550 (supplied), KT88, KT90, KT100, KT120– Power tubes
Auto-biased power tubes, interstage transformers
IMPORTANT: USING YOUR VACUUM TUBE AMPLIFIER
•
Do not unplug an interconnect while the amplifier is on
•
Do not unplug a speaker cable while the amplifier is on
•
Do not allow the ends of unconnected speaker cables to touch
•
Do not plug your amplifier into an ungrounded power socket
•
Turn on the preamp and source components first
•
Allow them to warm up before turning on the amplifier
•
Turn down the volume on the preamp and turn the amp on last
•
Turn down the volume on the preamp and turn the amp off first
•
When turning off the amps wait 15 minutes before restarting
•
Always use the correct tube types available from Raven
- 1 -
- 2 -
Power
Tube
12SN7
12SN7
12SN7
12J5
12J5
12SN7
12SN7
12SN7
Power
Tube
Power
Tube
Power
Tube
