TOA Electronics H-3WP - Manual (Page 11)

11
10. PROTECTION CIRCUITRY INFORMATION
• The speaker's tweeter has built-in overload protection circuitry. (The woofer does not have the circuitry.)
If there is an extremely high level input signal to the tweeter, the overload protection circuitry is activated and
cuts off the signal input to the tweeter.
• A sudden drop of the sound volume level during speaker operation indicates that the overload protection
circuitry has been activated. In such a case, reduce the amplifier volume and wait. The protection circuitry is
automatically reset after approximately ten seconds. After the circuitry is reset, set the volume at a lower
level than before.
Caution
This overload protection circuitry does not completely protect the tweeter. Depending on the nature of the
excessive signal applied to the speaker, there may be damage to the speaker before the protection circuitry
can operate. Also, depending on the duration of the excessive input signal, the protection circuitry may be
damaged and will not recover. Take special care that the excessive input is not applied to the speaker during
use.
11. EQUALIZATION
• The H-3 and H-3WP speakers are designed to provide good quality sound without additional signal
processing. However, by equalizing them as shown below, sounds can be made more powerful and
intelligible.
• Using a digital signal processor, use the following equalization settings.
[dB]
+20
+10
-10
-20
-30
-40
0
Frequency - Gain
20 50 100 500 1k 5k 10k 20k
[Hz]
[dB]
+20
+10
-10
-20
-30
-40
0
Frequency - Gain
20 50 100 500 1k 5k 10k 20k
[Hz]
Filter
HPF
PEQ
PEQ
PEQ
PEQ
Frequency
63 Hz
100 Hz
220 Hz
500 Hz
5,000 Hz
Gain
+9 dB
–8 dB
+5 dB
+1.5 dB
Q
0.707
2.871
2.871
2.871
0.305
Filter
HPF
PEQ
PEQ
PEQ
PEQ
Frequency
63 Hz
100 Hz
220 Hz
500 Hz
5,000 Hz
Gain
+5 dB
–8 dB
+5 dB
+1.5 dB
Q
0.707
2.871
2.871
2.871
0.305
[When not using a subwoofer]
[When using a subwoofer]