TAG MCLAREN AUDIO 250X3R Owner's Manual - page 7
the 250x3R incorporates
mixed technology
construction to
optimise performance.
The result is
uncompromised
sound in a small size.
aluminium for performance
The complete case, cooling fins and module
construction is made from Aluminium
instead of commonly used, cheaper mild
steel. Aluminium has been used as extensive
listening and laboratory tests
demonstrated that the
stray fields, albeit
minimal for a
toroidal transformer,
were interacting
with ferromagnetic
material in their
vicinity.
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OFHC loudspeaker connections
For excellent sound quality the 250x3R uses
TAG McLaren’s high grade oxygen free high
purity copper (OFHC) loudspeaker terminals
combined with a new knob made from non-
conductive Pocan.
Very few companies
provide OFHC
loudspeaker
terminals due to
the difficulties of
machining solid
copper, an
unacceptable excuse
for TAG McLaren.
The knobs for the 250x3R have been
manufactured from non conductive Pocan
without a metal insert as it was found that this
gave the best sonic result, identical to that
obtained using an OFHC knob
(1)
(as used on
the TAG McLaren 100x5R).
input terminals. The measure of how well it
does this is called the ‘common-mode
rejection ratio’. In the 250x3R this is more
than 40 dB, or one hundred times, and best
of all, this is permanently fixed as it is set by
precision resistors rather than by attempting
to balance variable semiconductor
properties.
combining a single ended av processor
with the 250x3R
It is important to realise that a balanced
output on the sending unit, the preamplifier
or av processor is not required to gain the
benefits of a balanced input. A single ended
RCA output is just as good, so long as the
unbalanced-to-balanced cable is wired
correctly. TAG McLaren provides a special
version of its F3-10-ANA, manufactured with
an RCA connector at its input and a XLR
connector at its output. For more details see
www.tagmclaren.com or your authorised
TAG McLaren retailer.
The Appendix shows how an RCA-XLR analog
cable should be wired to provide ground
loop hum suppression, as described above.
output
when only the best is good enough!
1. safety regulations do not allow the use of a OFHC knob due to the very high voltage the 250x3R can achieve at its loudspeaker terminals
premium-grade audio components
All components have
been carefully
selected and
auditioned before
a decision about
their use in the
250x3R was
made. For
maximum
performance ultra-
stable Vishay metal film resistors and low
dielectric loss Wima poly-propylene
capacitors have been selected, providing
the increased transparency and excellent
noise suppression which audiophiles
attribute to these components.
mixed technology construction
With surface mount components for fast
digital signal transfer and leaded through-
hole components for perfect audio signals,
Many small details lead to this exceptional amplifier, some key elements are covered below:
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