Features And Controls; Input Section; Mixer Input Section - Tascam 488 PORTASTUDIO Owner's Manual

488 MIXER

Input Section

The input section of the 488 is made up of input
jacks, input level controls (on channels 1 and 2
only) and switches that determine where the
input signal is sent.
Channels 1-2 differ from channels 3-8 in
construction.
[Channels 1-2]
1. MIC/LINE IN jack: This 1/4" jack accepts
unbalanced signals ranging from -50 dBV (0.
3 mV) to -10 dBV (0.3 V), depending on the
setting of the TRIM control (#3).
3. TRIM control: This sets how much pream-
plification level there is on the MIC/LINE
INputs (#1). When TRIM is turned all the
way to the left (LINE position), the
preamplifier gain is low, allowing the jack to
accept line level sources such as electronic
instruments or other -10 dBV output audio
equipment. As you turn TRIM up, the
preamplifier gain increases, and when you
turn TRIM full clockwise (MIC position), the
nominal input sensitivity of the jack
increases to -50 dBV (0.3 mV).
4. INPUT ASSIGN switch: This controls where
the MIC/LINE jack signal is sent:
MIX: signal is sent through the mixer
channel controls.
OFF: stops the signal here.
GRP: sends signal directly to the correspon¬
ding MASTER faders, directly, without
passing through the mixer channel
controls.
[Channels 3-8]
2. LINE IN jack: This 1/4" jack is for connection
of unbalanced line level signals. The
nominal input sensitivity is -10 dBV (0.3 V).
The LINE input has no trim control and
directly reaches the INPUT ASSIGN switch.
4. INPUT ASSIGN switch: This controls where
the LINE jack signal is sent
MIX:for sending signal through the mixer
channel controls.
OFF :turns the signal off.
GRP (channels 3 and 4):
sends signal to MASTER fader "3-4",
directly, bypassing the channel
controls.