Constellation Audio Perseus Phono Preamplifier - Manual (Page 7)

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recommended for the best possible audio quality. To remove an XLR plug, push on the tab above the
jack and pull the plug out.
IMPORTANT NOTE: To preserve true dual-mono operation, the Perseus uses a symmetrical circuit
layout. This configuration requires that the Perseus’s back panel connections be laid out a little
differently from those on most preamps. For example, the left-channel connection for MM input is on
the right side of the back panel, and the right-channel connection is on the left side. Connecting the
cables in the usual side-by-side fashion will result in an incorrect installation and the mixing of sounds
from different source devices.
3. RCA MC inputs
These unbalanced inputs are provided as a convenience for use with turntables having only unbalanced
output. Whenever possible, we recommend using XLR connections instead. Connecting to an
unbalanced turntable is handled in the same way an XLR balanced source. As you are looking at the
rear panel, the left RCA input is for the right channel, the right input is for the left channel. These
cannot be used concurrently with the corresponding RCA inputs; for each input, you can use either XLR
or RCA, but not both.
The RCA input numbers from left to right, looking at the back of the Perseus are:
MC-2
right
, MC-4
right
——MC-4
left
, MC-2
left
IMPORTANT NOTE: To preserve true dual-mono operation, the Perseus uses a symmetrical circuit
layout. This configuration requires that the Perseus’s back panel connections be laid out a little
differently from those on most preamps. For example, the left-channel connection for MC-2 is at the
far right side of the back panel, and the right-channel connection is at the far left side. Connecting the
cables in the usual side-by-side fashion will result in an incorrect installation and the mixing of sounds
from different source devices.
4. RCA MM input