DAA2 & DAX — P/N 53265:A1 8/24/2011 67
Section 4: BDA Backup Digital Amplifiers
The BDA-25V and BDA-70V backup digital amplifiers provide an economical means of backing
up DAA2 and DAX amplifiers in a one-to-one primary/backup configuration. A BDA can also
provide a second audio channel for a DAA2 when programmed as a primary amplifier in VeriFire
Tools. Table 4.1 lists BDA amplifier models.
A BDA is not addressable: it is considered a part of the digital amplifier to which it is attached.
4.1 Features
• Programmable with VeriFire Tools to be either a backup or a primary amplifier.
• Provides backup for DAA2 and DAX.
• Provides second audio channel for DAA2.
4.2 Specifications
4.2.1 When Used with DAA2-75
• With BDA-25V used as backup, 75 watts audio output from the DAA2, or 75 watts audio
output from the BDA-25V.
• With BDA-25V used as a second channel, 75 watts total audio output shared between the
DAA2 and BDA.
4.2.2 When Used with DAA2-50
• With BDA-25V/70V used as backup, 50 watts audio output from the DAA2, or 50 watts
audio output from the BDA.
• With BDA-25V/70V used as a second channel, 50 watts total audio output shared between
the DAA2 and BDA.
• Group Considerations:
• When the BDA-25V/70V and its DAA2 are in the same group, 50 watts total output.
• When the BDA-25V/70V and its DAA2 are not in the same group, 50 watts output
apiece for a total of 100 watts. (Charger disabled automatically in VeriFire Tools. with this
configuration.)
See “DAA2-75 Configurations with BDA” on page 73, as well as the Audio Groups
appendix in the DVC Digital Voice Command manual for more information on audio
groups.
BDA Models
BDA-25V 25 V
RMS
Switch settings for:
• 75 watt operation
• 50 watt operation
• 35 watt operation
Compatible with
DAA2, DAX
BDA-70V 70 V
RMS
Switch settings for:
• 50 watt operation
• 35 watt operation
Compatible with
DAA2, DAX
Table 4.1 BDA Amplifier Models
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