TOA fb-120b Manuel D’Utilisation
15
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.
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.
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 characteristics for low-frequency cut mode (speech applications) or when used with the FB-120
series Subwoofer System]
series Subwoofer System]
Filter
Frequency
Gain
Q
HPF BW (24 dB/oct)
90 Hz
–
–
PEQ
800 Hz
–3 dB
0.7
2.5 kHz
–4 dB
2.997
5 kHz
+5 dB
0.305
Filter
Frequency
Gain
Q
HPF (12 dB/oct)
60 Hz
–
2.053
PEQ
65 Hz
+2 dB
1.414
800 Hz
–3 dB
0.7
2.5 kHz
–4 dB
2.997
5 kHz
+5 dB
0.305
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.
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.