The
Acoustic Dimension attenuators are high quality stepped
41-position attenuators. They are designed for maximum
sonic quality, accuracy and reliability. This makes
them the first choice for audiophile applications.
Not commonly known, but in available attenuators the
switching action in fact consists of two separate
pressure contacts. A pressure contact from outer ring
(input) to the whipper and from whipper to the inner
ring (output).
After
the example of high current rheostats, we have replaced
the pressure contact from whipper to output with a
fixed flexible wire. This is a labor extensive solution,
but results in a much more open, transparent and stable
attenuator.
The
attenuators are available in two versions. The series
attenuator and the ladder attenuator.
The
series resistor networks consist of 41 non-inductive,
low noise, SMD metal film resistors. The PCB design
combined with the special resistors result in low
series inductance and low stray capacitance. The result
is a very wide bandwidth. There has been special care
taken to ensure the durability. The contacts are made
from silver and will maintain their specifications
even after long time of use.
Specifications series attenuator:
• 41 steps (1,5 dB per step)
• durable audiophile silver contacts
• non-inductive SMD resistors
• aluminum die cast body
• precision ball bearing support
• available values 10kOhm and 100kOhm
A ladder attenuator switches pairs of resistors. Regardless
of the attenuation, there are always only two resistors
in the signal path.
