Notifier DAA2 User Manual

DAA2 & DAX — P/N 53265:A1 8/24/2011 39
DAA2 Installation DAA2 Digital Audio Amplifiers
One backup amplifier may be used to back up as many as 31 primary amplifiers. All primary
amplifiers backed by the same backup amplifier must each be wired in the same style or
combination of styles; for example, all wired Class A, or all wired Class B, or all wired with one
Class A and two Class B circuits.
A backup amplifier can support one failed primary amplifier at a time. Should another primary
amplifier also fail, depending on load, the backup amplifier may also fail, generating an
AMPLIFIER LIMIT trouble until the load is reduced or reset.
Figure 2.27 One-to-one or One-to-Many Backup Using BKUP Terminal Blocks
DAP A+
DAP A-
REF A
TB2
TB3
DAP B+
DAP B-
REF B
DVC
Speaker
Circuit
(OUT1,
TB10)
To next primary
amplifier for one-
to-many backup*
DAA2
BACKUP
DAA2
PRIMARY
Speaker Circuit
OUT2, TB11
Optional Class A Return
Digital Signal
fro
m DVC
BKUP1
TB 14
BKUP2
TB15
BKUP3
TB16
Speaker Circuit
OUT3, TB12
BKUP4
TB17
Speaker Circuit
OUT4, TB13
DAPA DAPB
DAPA DAPB
To next primary
amplifier for one-
to-many backup*
To next primary
amplifier for one-
to-many backup*
To next primary
amplifier for one-
to-many backup*
*Note: No end-of-line resistor is necessary at the last
primary amplifier backup terminal.

Notifier DAA2 Specifications

General

Number of Channels	2
Input Voltage	24 VDC
Frequency Response	400 Hz to 4 kHz
Speaker Circuit	Class B
Humidity Range	10% to 93% non-condensing
Operating Temperature	0°C to 49°C (32°F to 120°F)
Wiring	12 AWG to 24 AWG