Tascam 688 Midistudio Owner's Manual page 38

(centered from 250 Hz, upper bass, to 6 -kHz, low
treble!, while the MID LEVEL controls whether that
frequency band will be increased or decreased. lOW is
a bass shelving control, with a hinge point of 100 hz,
that can affect signals from 20 Hz up to 250 Hz. HIGH,
MID and LOW level controls work similarly to the
controls on other audio equipment: turn to the right of
center to boost, to the left of center to cut, or leave in
the center for no effect (flat responsol.
4. AUX 1: This is a combination "where from" and "how
much" control. It typically controls how much signal
will go to an external effects device or headphone
mix. It gets its signal from a point just before (PRE) or
after (POST! the MAIN CHANNEL fader. It sends
signal down the AUX 1 buss to AUX MASTER 1.
Unlike most "effects· sends, the OFF position of the
AUX I knob is the center detent (12 o'clock). Turn to
the right of center to send signal to AUX 1 from the
POST-fader point, or to the left of center to send
signal to AUX
1
from the PRE-fader point. The farther
you turn it either way, tho louder it will be-if it's
turned alt the way to the left. it's at full volume.
POST means that when you change the level on the
MAIN CHANNEL fader the AUX 1 send will also
change. Use POST if AUX 1 is connected to an effects
unit, because when you fade out a signal you (usually!
don't want Its reverb to
stav
in the mix. PRE means
that AUX 1 will not be affected by changes to the
MAIN CHANNEL fader. This is useful when AUX 1 is
used as a performer's headphone mix, because once,
you've got their mix set, you don't want it to change as
you adjust the mix feeding the tape recorder. In PA
applications, this is called a "monitor- or "cue" control.
See p. 28, "Using Effects with the MIDISTUDIO 688".
5. AUX 2: This controls how much signal is sent to the
AUX 2 MASTER and output jack. It is typically used to
send a mix to a second extemal effects device (such as
a reverb), It works the same way as AUX 1 (above)
with one important exception: when you turn it to the
left of center, AUX 2 will get Its signal from a point
after the DUAL LEVEL control. The most common uae
for AUX 2 ia
8S
the effects send for the dual section
(channels 11-20). Turning it to the right (POsn gives
you the same POST-MAIN fader signal that appears at
AUX 1's POST, in case you want to have two different
effects on the MAIN input. See p. 28, "Using Effects".
6. DUAL LEVEl; This controls how much of the signal
chosen by the DUAL INPUT on the scene display
(either M1C, LINE, TAPE or POST! goes to the DUAL
PAN Just below it. and then on to the DUAL MASTER
stereo output. The Dual section is usuallv used for
tape monitoring during tracking and overdubbing, but
can also be used for eight additional inputs to the main
mix, or as a stereo eHects send from the main
channels.
7. DUAL PAN: This control allows you to create stereo
mixes by sending the DUAL input in continuouslv
variable degrees anywhere to the left or right of the
stereo DUAL OUTPUT. It gets Its signal from the
DUAL LEVEL and sends it down the dual lJR busses to
the DUAL MASTER control.
-37 -
8. PAN (Main): This control allows you to create stereo
mixes by sending the MAIN input in continuously
variable degrees anywhere to the left or right sides of
the main mix: pan left to feed ASSIGN GROUPs 1, 3, 6
and 7, pan right to feed ASSIGN GROUPs 2, 4, 6 and 8.
Between "hard left" and "hard right" settings, signal is
available lin differing degrees! to all eight groups. The
PAN gets its signal from the MAIN CHANNEL fader
and sends it to the ASSIGN GROUP electronic
switches controlled by the scene display. A PAN
control is a combination "where to!how much" control.
in that it controls both the level and direction of a
signal. Note that even if a channel is assigned to
8
group, if the PAN is set sll the way to the other side,
no signal will get through to that group.
9. Main Channel Fader: This linear slide fader varies the
level feeding the PAN control and GROUP ASSIGN
switches, the POST side of AUX 1 and 2, and the POST
position of the DUAL INPUT switch. The fader is set
for unity gain (level in-level outl in the middle of the
shaded area between 7 and 8.
10. EFFECT RTN 1-4: These control set how much signal
Is sent from the four EFFECT RETURN JACKS to the
EFFECT ASSIGN screen displav, where any effect
return may be assigned to any group. Once an effects
return is assigned to a group, it goes to the GROUP
MASTER FADER to be mIxed along with the main
signals to be recorded.
A specIal feature of the effect returns Is for those who
use mono effect returns. If
8
signal (for example, the
output of a reverb! is plugged into Return #1, but there
is nothing plugged into Return #2, the reverb signal
will go to both EFFECT RTN 1 and EFFECT RTN 2
controls. By assigning each RETURN to a different
group, you can vary the two controls to send signal
anywhere, between the two groups, similar to using a
pan pot. EFFECT RTNs 3 and 4 work the same way.
See p. 28, "Using Effects".
11. SUM switch: This SUMS or combines the signal from
the AUX 1 buss wIth the signal from the AUX 2 buss.
Its main application is when you went to send signal
from all 20 Inputs, both MAIN 1·10 (using AUX 1) and
DUAL 11-20 (using AUX 2) to the 88me effect unit (for
example, a reverbl. The SUM takes place before (pre!
the AUX 1 and AUX 2 MASTER. See p. 28, "Using
Effects with the MIDISTUDIO
688".
12. AUX MASTER, 1 and 2: These are the master
volume controls for the AUX 1 and AUX 2 mixes.
They' get their signal from the AUX LEVEL controls in
the channels to their laft. The signal then goes to the
AUX 1 and AUX 2 OUT Jacks on the
back
panel, and
the AUX 1 and 2 MONITOR SWITCHES. Adjust the
AUX MASTERs until you havo the correct level
feeding your external effeeta device. See p. 28,
"Setting Effects Send Levels".
13. DUAL MASTER: This is the master volume control
for the DUAL stereo mix. It gets its signal from all
DUAL LEVEL and PAN controls (11·20) to its left. It
sends signal to the DUAL OUT land R jacks on the
back panel, the DUAL LINK switches in the Scene
Display, and to the Monitor DUAL switch.