UNiKA UD-064 & UD-064D Switching Power Amplifier
LPF Filter and LPFMix Function for Subwoofer
Subwoofer is always power hungry, therefore, you may have to,
1. reserve more power for subwoofer by connecting subwoofer to a bridged output, or
2. have more than one subwoofer from outputs of channels with parallelized inputs.
Here are a couple of illustrations for the deployment with subwoofers.
Since the bridged output usually can provide power triple than a regular single-ended output, the first
approach can greatly boost audience's bass perception.
When you configure a set of bridged output (BTL) or a pair of parallelized inputs (PAR), a LPF (Low Pass
Filter) is automatically introduced in the signal path as the following block diagram.
The LPF filter cuts mid- and high-frequency components of audio from the output which allows you to
direct connect the subwoofer(s) to the output(s) of the amplifier without any speaker management processor
in front of the amplifier.
Please see an illustration on the right. The cutoff frequency
of the LPF filter can be adjusted on the item next to volume
setting for the BTL/PAR introducing it. The adjustable range
of cutoff frequency is 30 ~ 200Hz. You can disable or bypass
the LPF filter by roll the setting of the cutoff frequency over
200Hz, from where you can find that the reading of cutoff
frequency setting turns "noLPF" instead of "xxxHz".
In a simple or compact system where no audio console to
mix out a dedicated mono for subwoofer, you can enable the
Overview Description Getting Started Configurations
eXtraTone & LPF
In & Out Dante Applications Specifications Warranty
