User manual

4 Defining the 905xl Power Amplifier
Figure 1 defines the front and rear panels of the 905xl.
Figure 1: 905xl Power Amplifier Front and Rear Panels
# Feature Function
1 INPUTS 1 and 2 Buttons Press to select input audio source 1 (unbalanced) or 2 (balanced)
2
VOLUME
↑ and ↓ Buttons
Press to increase or decrease the output volume
3 MUTE Button Press to mute the audio output (the button lights). Press again to unmute the audio output (see
Section 7.1.2
4
)
INPUT 1
LEFT RCA Connector Connect to the left channel of the unbalanced, stereo audio source (see
Section 6
RIGHT RCA Connector
)
Connect to the right channel of the unbalanced, stereo audio source (see Section 6
5
)
INPUT 2 5-pin Terminal Block Audio Input Connect to the left and right channels of the balanced, stereo audio source
6 SPKR OUT 4-pin Terminal Block Speaker Output Connect to the left and right channels of a balanced, stereo acceptor (speakers)
7 RS-232 9-pin D-sub Serial Port Connector Connect to a PC/serial controller (see Section 6.1
8
)
PROGRAM Switch Switch up to perform firmware upgrades. Leave down for normal operation
9 Mains Power Connector, Fuse and Power Switch Plug in the power cord and switch the device on and off
5 905xl – Defining the 905xl Power Amplifier