Mic
Impedance
Mic
In
Balanced
Out
Line Out
12VAC
50
Ω
200
Ω
Insert
Tip=Send
Ring=Return
48
Volt
Meter
Input
Gain
Line In
Tube
Blend
Output
Level
Studio Projects
Tube Mic Pre
-8 0 +8 +15
-20
6
0
6
12
•
70Hz
Output
4
2
=
2
4
3
3
1
1
Line
In
Pol
Rev
Level
Input
HPF
SS
Tube
6
30
50
60
0
20
40
25
+
–
TIP
RING
SLEEVE
TO RECORDER:
RECORD-IN
FROM RECORDER:
PLAY-OUT
TO MIXER:
TAPE-IN
TO MIXER:
LINE-IN
-OR-
RING= Hot
SLEEVE= Ground
Studio
Projects
C1
Studio Condenser
STUDIO PROJECTS
(OR OTHER HI-QUALITY)
MICROPHONE
VTB-1
REAR CONNECTIONS
VTB-1
FRONT CONTROLS
INPUT GAIN: SETS THE LEVEL OF
SIGNAL FEEDING THE RECORDER
HI-PASS FILTER: AFFECTS SIGNAL
GOING TO THE RECORDER
TUBE-BLEND: ONLY AFFECTS THE SIGNAL
RETURNING FROM THE RECORDER
METER SELECT: LETS YOU VIEW THE
SIGNAL GOING TO THE RECORDER (IN),
OR FEEDING THE MIXER (OUT)
OUTPUT LEVEL: SETS THE AMOUNT OF
RETURNED SIGNAL FEEDING THE MIXER
POLARITY REVERSE: INVERTS THE
POLARITY (PHASE) OF THE SIGNAL
FEEDING THE MIXER
RECORD
PLAY
STUDIO PROJECTS
Because of its specially designed signal path, the VTB-1 can be used to both feed and
monitor a recorded track using its Insert Jack. The insert point is after the HPF, but
directly before the Blend Control. The signal feed from the insert jack is before any tube
circuitry, so the recorded signal will always be a SS only signal. The Playback output
from the Recorder uses the return path of the insert jack which directly feeds the Tube
Blend control and then the Output Level pot. By using the Blend control, the user can
add the desired amount of Tube Sound at the final mix stage instead of when tracking.
This allows for more variety during mixdown and contributes to less finger-pointing when
it’s decided that the sound you originally recorded is not really what you want now.
VTB-1 HOOKUP DIAGRAM
Using the VTB-1 for clean
recording, with the option of
adding “Tube Sound” to the
track during mixdown.
NOTE: The VTB-1 meter is calibrated
for Pro level operation (+4dBu). The
meter may stay in its lower ranges when
driving semi-pro gear (-10dBV levels).
If your equipment has a level-select
switch, set it for +4 operation for best
results and quietest operation.
NOTE: RCA connections shown, but use the correct
cable and connectors for your particular setup.
TIP= Hot
SLEEVE= Ground
Connections to the 1/4” TRS Insert Plug:
NOTE: Microphone
input shown, but this
setup works the same
way for Line-In signals.
Use the front-panel
jack and switch to bring
instruments into the
VTB-1.
Using the VTB-1 for feeding and
monitoring a recorded track
Insert
Return
Insert
Send
NOTE: Plugging into the Insert
Jack interupts the normal signal
flow thru the VTB-1. If the
recorder is OFF, or no playback
is available, no signal will show
in the meter (OUT) or be
present at the Bal Out or Line
Out of the VTB-1.
1/4” TRS
Insert Plug
