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

488 MIXER

Input Section

The input sec t ion of the 488 is m ade up of input
jacks, input level controls (on channels 1 and 2
only) and sw itches that determine w here 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 m V) t o -10 dBV (0.3 V), depending on the
setting of the TRIM control (#3).
3. TRIM control: This set s how m uc h 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 , allow ing the jack to
accept line level sources suc h as electronic
instruments or other -10 dBV output audio
equipment. As you turn TRIM up, the
preamplifier gain increases, and w hen you
turn TRIM full clockw ise (MIC position), the
nominal input sensitivity of the jack
inc reases t o -50 dBV (0.3 mV).
4. INPUT ASSIGN switch: This controls w here
the MIC/LINE jac k signal is sent:
MIX: signal is sent through the mixer
c hannel controls.
OFF: stops the signal here.
GRP: sends signal directly to the c orrespon¬
ding MASTER faders, directly, w ithout
passing through the mixer channel
controls.
[Channels 3-8]
2. LINE IN jack: This 1/4" jac k 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 reac hes the INPUT ASSIGN sw itch.
4. INPUT ASSIGN switch: This controls w here
the LINE jac k signal is sent
MIX:for sending signal through the mixer
c hannel controls.
OFF :turns the signal off.
GRP (c hannels 3 and 4):
sends signal to MASTER fader "3-4",
directly, bypassing the channel
controls.