adt-audio
ToolMod
®
Pro-Audio Module System
TM215b Stereo Mastering Peak-Limiter
7
The
LF-Attack
circuit in the TM215b is not a universal remedy but helps to achieve bet-
ter results, lower audibility of attack distortion and/or higher gain reduction. The cir-
cuit smoothes the hard edge in a frequency range that depends on the setting of the
pot when the limiter kicks in. Only the low frequency range is affected; mid and high
frequencies pass thru the circuit unchanged.
➔
Set Static Attack to the LONGEST attack time that is possible to catch all peaks
of the entire mix
. Statistically, upper mid and high frequency levels are lower than
low to mid frequencies. With most mixes you will not need the extremely fast settings
that are necessary and of advantage if there are very short peaks in the upper mid
and high frequency range.
➔
If you get attack distortion with this static attack setting, open the LF-ATTACK
pot and find the best setting to reduce the attack distortion
. Since the LF attack
circuit alters the waveform, all to the right is not necessarily the best setting. Always
check the entire range of the pot for the best setting.
The LF-Attack pot causes a shift of the threshold that is internally compensated to less
than 0.5 dB. After you have found the best setting, check the output level and read-
just with the gain pot if necessary.
Connectors
The TM215b is a 2U ToolMod module that uses one module compartment in a 1U, 2U
or 4U ToolMod frame. Input and output of the left stereo channel use the xlr connec-
tors of the module compartment. The TRS-connectors INb and OUTb are used for the
right stereo channel.
Connector Position in 1U-high Frames
This example assumes that a TM215b is installed in the 2nd module compartment. If
other compartments are used, the correspondent connectors of the particular com-
partment are used instead.
Left input: XLR IN2a, Left output: XLR OUT2a
Right input: TRS IN2b, Right output: TRS OUT2b
The vertical version in a 2U-high or 4U-high frame uses identical
allocations of the connectors; however, the oriented is rotated.
