Combination With The Mt-200 Matching Transformer; Equalization Usinga Digital Signal Processor - Toa HX-5B Operating Instructions Manual

13. COMBINATION WITH THE MT-200 MATCHING TRANSFORMER

Using the optional MT-200 matching transformer allows the speaker system to be connected to a high-
impedance amplifier. This matching transformer is best for use when the distance between the amplifier and
speaker is very long, or when multiple speaker systems are parallel-connected to a single amplifier.
Regarding the procedure for mounting the transformer on the speaker, refer to the instruction manual
enclosed with the MT-200.
14. EQUALIZATION USING A DIGITAL SIGNAL PROCESSOR
The speaker systems are to reproduce wide-band, high-efficiency sound even without the use of an equalizer.
However, sound quality can be made even clearer and more dynamic with the addition of a TOA digital signal
processor set as shown in the table.
[Filter characteristics for normal mode]
Filter
HPF (12 dB/oct)
PEQ
[Filter characteristics for low-frequency cut mode (speech applications) or when used with the FB-120
series Subwoofer System]
Filter
HPF BW (24 dB/oct)
PEQ
Note
When using the processor with the HX-5 series and the FB-120 series, ensure that the wiring polarity of both
units is the same.
Frequency Gain
60 Hz –
65 Hz +2 dB
800 Hz –3 dB
2.5 kHz –4 dB
5 kHz +5 dB
Frequency Gain
90 Hz –
800 Hz –3 dB
2.5 kHz –4 dB
5 kHz +5 dB
Q
2.053
1.414
0.7
2.997
0.305
Q
–
0.7
2.997
0.305
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