10
UM TGMC-120117
Attack
This is a continuous control and is used to set the speed at
which compression is onset.
Historical note:
EMI limiters including the: RS114 tube lim-
iter, RS124 Compressor, RS168 Zener prototype, TG12345
recording console limiters, and TG12410 transfer desk limit-
ers had fixed attack times.
Release
This is a continuous control and is used to set the recovery
time from compressed conditions to the inactive state gain
level.
Historical note:
EMI limiters including the: RS114 tube lim-
iter, RS124 Compressor, RS168 Zener prototype, TG12345
recording console limiters, and TG12410 transfer desk limit-
ers had six fixed recovery (release) times.
Hold
The
Hold
control is continuous and used to set the desired
degree of compression, a setting of
0
is least and
-10
is maxi-
mum potential reduction.
Note:
The
Hold
control works independently of level ap-
plied to the compressor, i.e. regardless of where the meter
needle is placed, the hotter the input signal into the TG1
Opto is, the greater the rate of compression be.
Tip:
To cope with inconsistent peak level programme, set
the
Hold
control fully anticlockwise (
-10
), and send lower lev-
el signal into the compressor, gradually increase the source
until the desired amount of compression is achieved; adjust
the TG1 Opto
Output
control — described in the next sec-
tion — to make up any gain lost.
Output
Provision is made for makeup gain by means of the compres-
sor’s
Output
control. This control is continuous and used to
return compressed programme to level; anticlockwise rota-
tion is less makeup gain.
Note:
The more compressed programme is, the louder the
processed material may appear, thus necessitating reduction
of the compressor’s
Output
control.
ATTACK
ROUNDED
1
2
3
4
5
6
7
8
9
10
11
+ 1 2
+ 8
+ 4
0
+ 1 6
Gain
Reduction
BYPASS
SHARP
RELEASE
ROUNDED
IN
1
2
3
4
5
6
7
8
9
10
11
1
11
KNEE
SHARP
ATTACK
HOLD
ROUNDED
1
2
3
4
5
6
7
8
9
10
11
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
OPTO
KNEE
+ 1 2
+ 8
+ 4
0
+ 1 6
Gain
Reduction
BYPASS
SHARP
ROUNDED
OUTPUT
IN
1
2
3
4
5
6
7
8
9
10
11
KNEE
