Fredenstein F602 Tube Compressor
Installation:
Please power down your rack or box first, before inserting the F602. Since the F602 uses the link
interconnect in the box or rack, it cannot coexist with any other third-party modules using the same
link interconnect (PIN 6 on the edge connector). If you are using a Fredenstein Bento box, please
turn off the compressor link switches to any third party module(s), only turn the link switches on
between F602 modules.
Other third party equipment not using the link interconnect, such as most Mic-Pres and EQs etc,
can be used simultaneously with the F602 in any enclosure. The power requirements are maximum
+16V, +250mA and -16V -200mA. Please make sure, in case you don't use a Fredenstein Bento, that
your box or rack can support the required currents. Please consult your third party documentation in
case of any doubt. To prevent high internal temperatures leading to over temperature shutdowns,
please make sure you have enough airflow through your lunchbox or rack.
To understand the function of the F602, let's discuss first some terms:
Hard-Knee characteristics means the compressor will evenly compress all signal above the
Threshold as set by the Compression Ratio control. Soft-Knee means that the compressor will start
softly when the Threshold is almost reached with a reduced Compression Ratio. Then it will
increase the Compression Ratio until the Gain Reduction reaches 3 dB and the full Compression
Ratio is applied.
When using very fast release times < 100 ms, you will get audible artifacts on low frequency
signals, so be careful when tracking a bass or using it as a buss compressor on a mix as an example
not to choose an ultra fast release time unless you want artifacts for artistic reasons.
Fredenstein F602 Manual V1.2 Jul 18, 2014 Page 3
