Lesson 3 Mixers, Amplifiers, and Interface Devices

Question 1

Modular Amplifiers

Answer 1

Max 500W capacity for external equipment used with 70V, 25V, and 8ohm speaker systems. Low cut switch that allows rolloff of frequency -125 Hz. Output jacks provide unbalanced buffered output signal post. Bridging connector allows system expansion by linking multiple mixed buses together. And signal processing insert jacks allows external equip inserted between the pre-amp output and the power amp input.

Question 2

Input Modules

Answer 2

Microphone, transformer balanced (XLR - screw terminal) low impedence, electronic balanced microphone inputs, transformer balance input (aux input), tone generator (4 of 8 tones), stereo auxillery inputs (unbalanced stereo module), mono auxillery input (unbalanced mono input module), bridging input, (daisy chain multiple amplifier inputs), telephone inputs (loop start, ground start, trumps), balanced input (stereo balance input)

Question 3

Output Modules:

Answer 3

Ambient noise sensor, relay module

Question 4

Modular Amplifiers

Answer 4

100 watt, 150 watt, 250 watt models, 4 ohm, 8 ohm, 25 V and 70V outputs for priority levels, 8 module input base, up to two signal processing output models, up to 8 input models.,

Question 5

Amplifiers

Answer 5

Gold seal series amps (most expensive),
Classic series - public address mixer amps provide mixing of mics, telephone, and auxillary sources.
Output jacks allow a tape recorder or additional booster amp to be connected, high performance, flexibility and reliability for most applications requiring a variety of inputs.
Utility - GA2 rugged, compact, amp designed to meet the requirement of continuous low power audio applications. GA6A - dual input amp with a variety of smaller applications.

Question 6

Dual channel power amps

Answer 6

70 V speaker output low impedence outputs 4 - 8 ohm speaker loads, as low as 2 ohms, low cut filter switch, low frequency rolloff of 65 Hz or 125 Hz.
Modulation bay - accepts 1-2 bogen input modules, balanced high impedence stereo input model and has cooling fans.

Question 7

Promatrix Series:

Answer 7

Developed expressly for the needs of restaurants, lounges, fitness centers, and other venues that require numerous input sources, but have areas with distinctly different audio requirements. Provides 4 aux and 2 mic inputs distributed into three different zones and can be prioritized.