Lab.gruppen fP 2200 - Manual (Page 5)

EC must be approved for immunity against electromagnetic fields, high voltage flashes, and
radio interference.
• Consult the dealer or an experienced radio/TV technician for help.
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Thank you for purchasing a Lab.gruppen power amplifier. This manual contains important information
on operating your amplifier correctly and safely. Please take some time and read this manual to
familiarize you with the advanced features of this amplifier.
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Carefully open the shipping carton and check for any noticeable damage. Every Lab.gruppen amplifier
is tested and inspected before leaving the factory and should arrive in perfect condition. If found to be
damaged, notify the shipping company immediately. Only the consignee may institute a claim with the
carrier for damage incurred during shipping. Be sure to save the carton and packing materials for the
carrier's inspection.
It is also advisable to save the carton and packing material, even if the amplifier is undamaged. Should
you ever need to ship the amplifier, always use the original packing.
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Figure 1: Front panel
1. Carry/protection handle
Both handles can be used to carry the amplifier; they also act as protection for the front panel. In
permanent installations, or where rack front covers are too shallow they may be removed by unscrewing
the retaining bolts behind the front panel.
2. Input level attenuators
These controls are used to alter the signal level entering the amplifier. They are calibrated in dB to assist
the setup of active loudspeaker systems, or to cut down unwanted noise from the input signal. (See page
12 )
3. Over temperature protect indicator
This indicator illuminates if the amplifier is going to operate above its maximum operating temperature
(90°
° C). The indicator first comes on as a warning to either turn down the input level or check the
cooling arrangements. Beyond the maximum temperature the amplifier will mute the input signal. Once
the cooling fans have brought the output heat sinks back to normal operating temperature the input
signal is un-muted.
4. Protect indicator (VHF and short circuit)
This indicator illuminates if signals above 12 kHz are continuously present at full power at the output
terminals or if short circuit protection is activated. If this occurs the input signal is muted, and the process
cycles until the VHF signal is no longer present or the short is removed. (See page
14 )
5. Clip/limit indicator
This indicator signals if the amplifier output is clipping or limiting. It has two different indication states:
If the clip limiter is engaged, it has a short time constant, and it illuminates briefly.
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