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If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment on and off, the user is encouraged to try to correct the
interference by one or more of the following measures:
• Reorient or relocate the antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
• Check if the affected unit complies with the EMC limits for immunity, (CE-labelled). If
not, address the problem with the manufacturer or supplier. All electrical products sold
in the 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.
4 INTRODUCTION
Thank you for purchasing a TANNOY 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.
4.1 Unpacking
Carefully open the shipping carton and check for any noticeable damage. Every Tannoy 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.
4.2 Front Panel
Figure 1 front panel
1. 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 cut down unwanted noise from the input signal.
(See page 13
).
2. Protect indicator
This indicator illuminates if the amplifier tries 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.
This indicator also illuminates when 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
).
Tannoy Limited
TA 1400 User Manual 11-06-02
4