UNiKA UD-064 & UD-064D Switching Power Amplifier
Analog Audio Inputs
By default, the UD-064/UD-064D is configured to receive audio from
analog inputs via balanced XLR sockets on the rear panel. The
maximum acceptable signal level to the XLR input sockets is 24dBu,
and input sensitivity to drive the amplifier to its 0dBFS maximum
output can be set from SNSTVT setting item in the SETTINGS menu
mentioned previously.
The signal wiring on the contacts of XLR socket is exactly the same as industrial standard as follows,
1. Signal Ground
2.
3. Signal -
When you enable PAR1&2 (or BTL1&2), the Input2 is internally disconnected to avoid possible noise
coupling from the unused input. Similarly, when you enable PAR3&4 (or BTL3&4), the Input4 is
disconnected internally. Enabling PAR1~4 will internally disconnect Input2, Input3, and Input4 for the same
reason.
Power Output Interface
The amplifier outputs are routed to reliable and robust speakON sockets
with quick lock feature. The output of channel 2 is also routed to contact
2+/2- of speakON1 for bridged connection (a.k.a. BTL) or for Bi-Amp
speaker connection. Similarly, the output of channel 4 is also routed to
contact 2+/2- of speakON3 for the same purpose. The contact 2+/2- of
both speakON2 and speakON4 are left unconnected. See an illustration
for regular single-ended, bridged, and Bi-Amp speaker connections on the right.
speakON 1 speakON 2 speakON 3 speakON 4
contacts 1+/1-
CH1
CH2
CH3
CH4
contacts 2+/2-
CH2
N.C.
CH4
N.C.
Since the UD-064/UD-064D amplifier is designed to be able to drive heavy load
with impedance down to 2Ω, each output of the amplifier can connect to a bunch
of parallelized speakers with equivalent impedance as low as 2Ω. Most speakers
with speakON sockets offer a pass through socket for the parallelizing, so audio
technicians can easily achieve the parallelizing of a bunch of speakers via cables
with speakON plugs.
NOTE:
Though the power can be delivered from each output of the amplifier
depending on the load (impedance) connected on the output, the total power
of the amplifier can be delivered to all the connected speakers, however, is
restricted to about 4KW in AC240V environment or 3KW in AC120V environment. This is due to
the limited capacity of capacitors of the internal power supply.
USB Computer Interface
An USB2.0 port on the front panel is used for firmware upgrade on the factory side. Currently it is not
intended to be used for any application on the user side. Also, this belongs to a peripheral port and
does not offer the capability of delivering 5V power.
Overview Description Getting Started Configurations eXtraTone & LPF
In & Out
Dante Applications Specifications Warranty
