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8 - SOUND QUALITY OPTIMIZATION
- Warm-up sonic effect.
If the preamplifier has been left unpowered for a few days, the optimum sound quality
is only reached after many hours. The critical circuits have to warm up to 55
degrees Celsius (+131 degrees Fahrenheit) before achieving their optimal
performances. This is why Goldmund recommends to leave the MIMESIS 22
powered on.
- Absolute phase.
Your preamplifier has an absolute phase inverter switch. For each source, one of the
two position is optimum. Most of the record are recorded without care for the
absolute phase. Different LP's can have different optimum positions. The absolute
phase optimization is less critical and can be difficult to achieve with CD's since, at
the current state of the technology, the phase coherency of this source is not
sufficient to allow a sufficient difference between the two positions.
- The GOLDMUND exclusive "Mechanical grounding".
In the Goldmund Mimesis 22 preamplifier, Goldmund implemented the same special
construction used in most of its other products : an optimized vibration evacuation
path.
To get all the benefits of this improvement, the MIMESIS 22 must be located on a
very rigid support, directly coupled to the building. Try various location until you find
the most rigid one. Avoid any decoupling material, carpet especially, even between
the furniture and the floor. Or use pin-point supports to couple the furniture to the
floor. Or better, use one of the Goldmund table elements which are made to provide
the best Mechanical Grounding to several Audio Components assembled in a single
structure.
With a very top system, the sonic improvement when the proper grounding is found is
obvious and worth the try.
