Alesis Matica 500, Matica 900 manual Amplifier Operations, Chapter

Installations

CHAPTER 3

AMPLIFIER OPERATIONS

Once all gain adjustments are made and proper operation is confirmed, no special considerations are required for Matica amplifiers. Aside from the front panel gain controls, there are no user adjustments or routine maintenance operations necessary (or available).

When powering a system on or off, it is usually advisable to turn on the power amplifiers last and to turn them off first, so that any turn on or turn off transient signals generated by other equipment in the system are not amplified and sent to the loudspeakers. However, Matica amplifiersÕ protection relays have a 4 to 5 second turn-on delay which keeps the loudspeakers disconnected while the system is powering up. These relays also disconnect the load very quickly when power is removed from the amplifiers, thus minimizing the chance that turn-off transients originating elsewhere in the system will be sent to the speakers.

14 Matica 500/900 Reference Manual