INSERTION OF THE TUBES AND G A I N S E T T I N G
The
•7308/E188CC • 6DJ8/ECC88 • E88CC •12AT7A/ECC81 Please read and follow these instructions carefully for initial tube inser- tion or tube replacement. Great care was taken in the testing, selection and matching of the supplied tubes in order to ensure proper opera- tion of the unit. Casual replacement of tubes is NOT recommended.
1. Be sure that the AC DETACHABLE POWER CORD IS DISCON-
N E C T E D from the
2.Using the Phillips screwdriver, remove the cover of the
3.When handling the tubes, it is recommended that the cotton gloves provided be worn to prevent skin oils from depositing on the glass sur- face and possibly causing the tube to become prematurely “gassy”, thereby shortening the tube’s useful operating life.
4.Inspect the tubes for code markings. They will be coded individually, each with one of the following codes: LV1, LV2, V1 and V2.
5 . Inspect the tube sockets in the
6 . Take the tube marked LV1 and inspect the pins, noting the larger space between two of the pins. This space will align with the same larger space between two of the pin holes on the socket. Insert the LV1 tube into the LV1 tube socket, making sure all pins and pin holes are aligned (see Figure 3). Do not force the tube into the socket. “Rock” the tube gently while pushing slowly until the tube is firmly seated.
Figure 2 - Overview of the
WARNING - DISCONNECT the AC Detachable Power Cord from the
Repeat this step for the remaining tubes; LV2 tube to the LV2 tube sock- et, V1 tube to the V1 tube socket and V2 tube to the V2 tube socket.
7.Two slide switches for gain setting left and right channel are locat- ed beside the LV1 and V2 tube sockets. These switches are to be moved inward to the MM position if a Moving Magnet or high out- put cartridge of 1.0mv or greater is in use. If a Moving Coil or low to medium output cartridge of 0.2mv to 1.0mv is used, slide the switch- es outward to the MC position (see Figure 2).
N O T E : If insufficient gain is realized from the
Also refer to the Operation section of this manual for turntable set up if a Moving Coil mode is chosen.
8.Replace the cover and fasten it with the screws provided. The
Note the larger space between two of the pins and holes for proper alignment of tube and socket.
Figure 3 - Tube pin alignment with the socket.
WARNING - DISCONNECT the AC Detachable Power Cord from the
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