Product Guide
PRODUCT INFORMATION
Technical data and price changes reserved.
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PRO-JECT AUDIO SYSTEMS
www.project-audio.com
Power Box RS2 Phono - linear power supply upgrade
An outboard power supply with linear construction is
even better, because it can oer much cleaner power.
When you want to manufacture such clean and really
high-end power supplies, you have to use a transformer
with a very low core saturation and preferably with shiel-
ding between primary and secondary windings. Low core
saturation decreases radiation of the outer electromag-
netic eld which can be inducted into sensitive circuitry.
Shielding between windings work as a very ecient lter
which eectively suppresses interference from mains.
When it is combined with a DC-blocker which avoids the
saturation of a core by DC current, the resulting ltration is
even better. The mechanical vibration of the transformer
is also reduced. It is critical that the transformer in use is
also vacuum impregnated. Obviously, such a transformer
becomes larger than one would expect. Also, much more
expensive. That is why such a power supply requires a
cabinet the size of the Phono Box RS2 itself. The locati-
on of the power supply shouldn’t be close to Phono Box
RS2. Additionally, the Phono Box RS2 shouldn’t be expo-
sed to big transformers in power ampliers or other ap-
pliances which can cause electromagnetic interference
either. Strong electromagnetic elds from big transfor-
mers in very close proximity can even penetrate the hea-
vy metal/aluminium chassis of the Phono Box RS2. Even
a chassis like this has its limits! The best arrangement is
to keep the Phono Box RS2 as far away as possible from
those harmful electromagnetic elds.
Our Power Box RS uni 1- & 4-way will be another step up
for your Phono Box RS2 performance.
Steel/aluminium chassis
The Phono Box RS2 has a steel chassis which is covered
by screwed aluminium panels. This construction brings
very good rigidity and splendid isolation against interfe-
rences. Working with hundredths of fractions of micro-
volts, everything is playing its role. Phono Box RS2 is
available in silver or black.