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14 freePORT PAS 400 Version 060328
- which may cause loop feedback when the recorders inputs and outputs are connected to
the same unit).
2.7 TONE Controls
The PAS 400 features three tone controls for separate adjustment of the Low (Bass), Mid
(Middle) and High (Treble) frequencies.
2.7.1 Low Control
The Low frequency control can be used to improve the lower tones of speech, vocals or music.
For best speech quality, the "SP" position is recommended as the initial setting - then adjust
as necessary based on the acoustic conditions (indoors/outdoors, small/large room,
reflective/non-reflective walls, few/many people, etc). In small, very reflective/resonant
rooms, the Low control may have to be adjusted even lower than the "SP" position. For music
the Low control should initially be set to the "0" position and then adjusted according to the
room conditions and personal taste.
2.7.2 Mid Control
The Mid control is centered at a frequency of 1800 Hz and will have a pronounced effect on
speech and vocal presence. It is also the frequency range where most feedback problems
occur, so careful adjustment is recommended. For most situations, the "0" position is
suggested as the initial setting, then adjust according to room conditions and desired
presence level.
2.7.3 High Control
The High control can influence the clarity and intelligibility of speech and vocals but can also
add sibilance or feedback if set too high. It is important to be directly in-line with the front
of the loudspeaker cabinet when the High control is adjusted, so that the treble level or
sibilance can be clearly heard. For most situations and with most microphones, it may be
better to initially set the High control slightly below the "0" position, then adjust the Volume
control to the maximum level that will be used - then make final (fine) adjustments with the
High control.
2.8 Rechargeable Battery -Description
The internal rechargeable battery is a high quality, maintenance-free, lead battery. Unlike a
car battery, it is leak-proof and can be oriented in any position without leaking. The main
advantages of these batteries is their very high charge-capacity-to-volume ratio, very low
tendency to self-discharge and low susceptibility to memory-effect (they can be recharged
at any time / do not have to be completely discharged before they can be recharged).
Battery recharging is recommended after each prolonged use of the PAS400 with battery
power.
See section 1.11 for additional information regarding battery charging, storage and
estimated battery life.
2.9 Battery Replacement and Disposal
For safety and best performance, the internal rechargeable battery should only be replaced
with a new unit of the manufacturer's recommended equivalent type. Defective batteries
must be handled and disposed of as hazardous waste. Please contact the authorized K + H
distributor or dealer before removing or disposing the internal battery.