FONESTAR TFA-500 User manual

TFA-500
100 V LINE TRANSFORMER FOR AMPLIFIERS
INSTRUCTION MANUAL
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DESCRIPTION
The TFA-500 is a 100 V line transformer for amplifiers. It converts the amplifier or low impedance (4-8 Ω)
stereo power amp output into a high impedance output for loudspeakers with 100 or 70 V line transformer.
CONTROLS AND FUNCTIONS
FRONT PANEL
1.- CH A/CH B: LEDs that light up when a signal is detected at input CH A or CH B respectively.
REAR PANEL
1.- OUTPUTS CH A/CH B: output terminals for 100 V and 70 V line loudspeakers, threaded terminals.
2.- STEREO/PARALLEL: selector that allows you to choose the operating mode. You can choose between
stereo mode (2 input channels and 2 output channels) or parallel mode (only 1 input channel (CH A) and
2 output channels).
3.- INPUTS CH A/CH B: speaker signal inputs for low impedance amplifiers 4-8 Ω, screw terminals and
banana plugs..
In PARALLEL mode the input is only CH A.
CONNECTION
Note that the inputs you connect to the TFA-500 must be 4-8 Ω speaker outputs from a low-impedance
amplifier.
All loudspeakers connected to the TFA-500 outputs must always be connected in parallel mode and the
power of all loudspeakers combined must not exceed the power supported by the TFA-500 (500 W RMS per
channel).
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STEREO MODE
In this mode, the two channels operate independently. That is, input CH A must go to output CH A, and input
CH B must go to output CH B.
Set the operating mode on the rear of the power amplifier to STEREO.
Connect the 4-8 Ω amplifier speaker outputs to CH A and CH B inputs, respectively.
Finally, connect the 100 V speaker lines in compliance with the requirements of a 100 V line installation.
PARALLEL MODE
In this mode, there will be one single signal input, CH A. The signal of the CH A input can go to either output
CH A and/or output CH B, both outputs are the same.
Set the operating mode on the rear of the power amplifier to PARALLEL.
Connect the amplifier's 4-8 Ω speaker output to the CH A input .
Finally, connect the 100 V speaker lines in compliance with the requirements of a 100 V line installation.
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TECHNICAL SPECIFICATIONS
TFA-500
CHARACTERISTICS 100 V line transformer for amplifiers.
Converts the amplifier or low impedance (4-8 Ω) stereo power amp output into
a high impedance output for loudspeakers with 100 or 70 V line transformer.
POWER 500 + 500 W RMS
RESPONSE 20-20,000 Hz
DISTORTION Harmonic: < 0.1%
PROTECTION Temperature, surge and RF filter
INDICATORS Input signal
INPUTS 2 inputs, 4-8 Ω, screw terminals and banana plugs
OUTPUTS Loudspeakers: 100 and 70 V lines, screw terminals, stereo or parallel mode,
selectable
DIMENSIONS 483 x 72 x 236 mm depth. Approximately 1.5 U 19” rack
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