Palmer PTINOS Manuel D'utilisation page 7

SETUp
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Setup and wiring of the TWO IN ONE switching system require some care to
avoid malfunction and as a result, defects to the amplifiers. For tube
amplifiers, the connection to the speaker cabinet plays a significant
role. For maximum safety, the loudspeaker and both amplifiers should have
the same input/output impedance. So, if the cabinet has a input value of
16 ohms, a 16 ohms output should be present or adjusted on both ampli-
fiers.
In addition to the usual guitar cables, the following cables are requi-
red:
2 good quality, shielded instrument cables and 3 speaker cables. The
required length will be determined by the positioning of the TINO SYS-
TEM. In general, standard cable lengths of 3 metres should be sufficient.
In order to avoid wrong connections, it is advantageous for the cables
to be clearly marked, so as not to confuse instrument cables with spea-
ker cables, or the speaker cables and those between the amplifiers and
the outputs of the TINO SYSTEM. If the TINO SYSTEM is switched using a
SWITCHING SYSTEM (Switcher), a jack to jack cable to connect the two
devices is also required. For this purpose, a simple speaker cable or
instrument cable can be used. In the interests of short cable runs, the
device should be placed as close to the amplifiers as possible; however,
a placement immediately on top of an amplifier should be avoided as it
may cause a buzzing sound. As mentioned previously, a high quality audio
transformer is used to prevent ground loops. Although this transformer is
shielded, it will react to the presence of magnetic fields such as those
emanating from the power transformer in the amplifier. If after the setup
of the switching system, unusual humming sounds occur, which cannot be
eliminated by the GND lift switch on the TINO SYSTEM, try to positi-
1
on the unit in a different place. 50 cm to either side should suffice in
most cases.
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