YORKVILLE TX Série Manuel De L'utilisateur page 3

Introduction
The TX Series processors are an essential part of any TX loudspeaker system. TX series
loudspeakers should not be used without the appropriate processor. There are different TX
processors for each of the full–range cabinets in the TX line. The TX3P, TX4P and TX8P also
provide processing for subwoofers added.
The TX processors perform several functions: Crossover, equalization, calibration, loud-
speaker protection and hum rejection. The crossover function splits the input signal into dif-
ferent frequency bands for each driver (e.g. High, Mid, Low and Sub for TX8). Equalization
flattens and extends (LF) the frequency response. Calibration adjusts for different amplifiers to
maintain proper response independent of amplifier gain. Protection ensures that the drivers are
not driven beyond their safe limits. Hum rejection is provided by the balanced inputs and by
the remote reference feature of the output drive stage when used with unbalanced amplifiers.
1. Calibrate Button
This is the most important control on the processor. Calibration adjusts for different amplifiers
to maintain proper response independent of amplifier gain. This allows a fail safe approach to
matching amplifiers with a TX-Series loudspeaker system. Please refer to the recommended
power amplifier section for information on which power amplifiers are required for each of the
various TX-Series loudspeaker systems. If a larger than necessary power amplifier is used with
the system, the processor will simply turn down the input gain to the level.
After the system is wired and power is applied, depress the calibrate button twice (quickly). The
processor will then send tones through each amplifier and adjust the gain in the processor to the
appropriate level for the amplifier being used. This may be done with or without the loudspeakers
connected. The calibration routine is also a good test of the entire system. Listen for clean tones
from all drivers during test. There is a separate calibrate button for each input channel.
If the processor is not able to calibrate properly it will flash the mute and limit lights for
each band in error along with the calibrate light. Failure to calibrate may be due to several
causes: mis-wiring, not enough amplifier gain, amplifier gain controls not at maximum or
amplifiers turned off. If a band does not calibrate properly, the processor will be set at a low
but usable level. The flashing lights may be extinguished by depressing the calibrate button
once. If there is an error the calibrate light will remain on but not flashing. The calibrate
routine will always try to calibrate a subwoofer output but will not indicate subwoofer cali-
bration errors when the mode is set for operation without a subwoofer.
Note: The calibration will be maintained even when the power is disconnected.
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