5 ACU Pages

19

ACU Pages

NetworkAmp Manager—Owner’s Manual

5  ACU Pages

This chapter explains the ACU pages, which can be selected while an ACU16-C is selected 
in the network tree.

Devices on a CobraNet network transmit and receive audio data by matching bundle num-
bers. Matching the bundle number on the transmitting and receiving devices is analogous 
to making a physical cable connection between two devices. For example, if the Transmit 
bundle assignment (CobraNet Output) on an NHB32-C is set to bundle #4, and the Receive 
bundle assignment (CobraNet Input) on an ACU16-C is also set to bundle #4, audio data 
in bundle #4 will be carried from the NHB32-C to the ACU16-C.

CobraNet Page

In this page you can make CobraNet bundle assignments and specify the latency of the 
CobraNet network.

You can specify which bundles you want the ACU16-C to receive. The ACU16-C supports 
bundles 0 through 16,383 (multicast and unicast). Bundle 0 is not really a bundle as such, 
more of a null setting used to disable transmission or reception.

Enable Unicast: 

If you do not check this check box, you can specify bundle 0 and multi-

cast bundles 1 through 225. If you check this check box, you can specify unicast bundles 256 
through 16,383, in addition to bundle 0 and multicast bundles 1 through 225.

Receive bundle assignment: 

These parameters are used to specify the bundles that 

contain the CobraNet channels you want to patch to the ACU16-C’s analog outputs. You 
can patch the individual channels in each bundle on the ACU Patch page (see 

page 20

).

Latency:  

This parameter is used to specify the latency of audio data received from the 

CobraNet network in ms units. Normally, select 5.33 ms. You can also select 2.67 ms or 
1.33 ms (low latency).

The number of bundles that can be assigned per unit is always four bundles, regardless of 
the latency setting.

Note: You can change the latency setting only while offline. In order to apply the setting to the 
NHB32-C or ACU16-C, you must execute “Connect & send to network.” It is possible that 
noise will occur somewhere in the system when you change the latency. To prevent damage to 
speakers or other components, you should turn down the audio to the CobraNet network or 
turn down the output of the power amps before making this change.