8
UM TGMC-120117
CURVE BENDER
The
Curve Bender
section of the TG Microphone Cassette is
an adaption of Chandler Limited’s acclaimed EMI TG12345
Curve Bender EQ, itself a greatly expanded recreation of the
EMI TG12345 mixing console’s channel equalizers of the late
‘60s and ‘70s.
Treble
This shelving type EQ control is continuous, allowing for
boost or cut of up to +/-10 dB, at a fixed frequency of 8.1
kHz.
Bass
This shelving type EQ control is continuous, allowing for
boost or cut of up to +/-10 dB, at a fixed frequency of 91
Hz.
Presence
The
Presence
or mid band is a bell type EQ, and has two con-
trols: boost or cut and frequency selection. The upper con-
trol is continuous, allowing for +/-10 dB boost or cut at the
frequency selected by lower switch. The available presence
frequencies are as follows:
300, 500, 1.2, 3.6
and
6.5
kHz.
The
Presence or mid band can be bypassed independently
apart from the
Treble
and
Bass
controls by means of setting
the frequency selection switch to the
Out
position.
Historical note:
500, 1.2 and 6.5 kHz were frequencies
originally available on the Microphone, Group and Main Cas-
settes of the historic EMI TG12345 desks; the boost or cut
control was a rotary switch.
EQ In
The toggle switch labeled
EQ IN
, when positioned downward,
inserts the Curve Bender into the audio path; conversely, in
the upward position, the equalizer section is bypassed.
Output
The
Output
control is continuous, acting as a fader would on
a mixing console. Use this control to trim the overall output
level of the Pre Amp/EQ section to a recording device, con-
verter or interface, external equipment, or to regulate level
sent into the TG1 Opto compressor when patched as part
of the cassette chain.
Note:
When setting Pre Amp/EQ section input gain, begin
with the
Output
control set fully clockwise (
10
) for unity level,
adjust anticlockwise as needed so as not to clip the targeted
device’s input.
Tip:
If extra coloration or harmonic distortion is desired,
this may be achieved by means of overdriving the Pre Amp/
EQ input stage as follows- begin with the
Output
control low-
er, adjust
Coarse Gain
considerably higher, and tune
Fine Gain
to satisfaction.
OUTPUT
TREBLE
PRESENCE
BASS
EQ IN
5
6
4
3
2
1
0
7
8
9
10
-8
-6
-4
-2
0
+2
+4
-10
+6
+8
+10
-8
-6
-4
-2
0
+2
+4
-10
+6
+8
+10
-8
-6
-4
-2
0
+2
+4
-10
+6
+8
+10
300
500
1.2
3.6
6.5
OUT
OUTPUT
TREBLE
PRESENCE
BASS
EQ IN
5
6
4
3
2
1
0
7
8
9
10
-8
-6
-4
-2
0
+2
+4
-10
+6
+8
+10
-8
-6
-4
-2
0
+2
+4
-10
+6
+8
+10
-8
-6
-4
-2
0
+2
+4
-10
+6
+8
+10
300
500
1.2
3.6
6.5
OUT
OUTPUT
PRESENCE
5
6
4
3
2
1
0
7
8
9
10
-8
-6
-4
-2
0
+2
+4
-10
+6
+8
+10
300
500
1.2
3.6
6.5
OUT
