DSO26 User Manual
34
Output Limiters
High performance digital limiters are provided for each output with control over attack time,
release time and threshold level parameters - see page 23 for details. This level of control
allows the user to balance the required subjective quality of the limiter against the driver
protection requirements. It does also mean that an incorrectly set limiter may sound awful!
In particular, as with all limiters, using too fast an attack or release time will result in
excessive low frequency distortion. In the ‘Design a Xover’ sub-menu there is an option for
automatic limiter time constants.
In this mode the time constants will be automatically set from the Highpass filter frequency
according to the table below.
The time constants are set by the high pass filter frequency for that channel.
High Pass Filter Auto Attack Time Release Time
<10Hz – 31Hz 45mS x16 (720mS)
31Hz – 63Hz 16mS x16 (256mS)
63Hz – 125Hz 8mS x16 (128mS)
125Hz – 250Hz 4mS x16 (64mS)
250Hz – 500Hz 2mS x16 (32mS)
500Hz - 1kHz 1mS x16 (16mS)
1kHz – 2kHz 0.5mS x16 (8mS)
2kHz – 22kHz 0.3mS x16 (4mS)
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