900 Series Modular Amplifiers. Modular Design Advantages Design Flexibility One Product for Many Applications Easy to Upgrade Easy to Repair and Service.

900 Series Modular Amplifiers

Modular Design Advantages

Design Flexibility One Product for Many Applications Easy to Upgrade Easy to Repair and Service TOA Reliability

A-900 Series Mixer/Amplifiers

30, 60 and 120 Watt Models

Eight Module Slots

Dual Mute Buses

Remote Master Volume

Bass/Treble Controls

25/70 V and 4/8 Ohm Speaker Outputs

Auxiliary Output

Bridge In/Out

Pre-Out/Power In

Protection Circuitry

900 Series Modules

Module Categories

Mic Typically from 0.25 mV (-70 dBu) to 2.5 mV (-50 dBu) Examples include: microphones, wireless microphone

receivers Line

Typically from 100 mV (-18 dBu) to 7.75 V (+20 dBu) Examples include: AM/FM tuners, CD players,

cassette decks, computer sound cards, jukeboxes, satellite receivers, signal processors, telephone page outputs, wireless microphone receivers

Special Function

Mic Modules

Low-Impedance Phantom Power Hi/Low Cut Filters Types

Standard Mute-Send Mute-Receive Voice Gate Compressor Remote Volume

Line Modules

Standard Hi/Low Cut Filters Balanced w/ Transformer-Isolation

10k ohms or 600 ohms Unbalanced

Dual RCA jacks (stereo sum) Mute-Send Mute-Receive Remote Volume Control Compressor

Special Function

Line Output Balanced, Transformer-Isolated, Level Control

Line Input w/ MOH Output Mute-Receive

Tone Generators 1k Hz Sine Wave Buzzer/Yelp Switch-Selectable Chime Message Repeater

Speaker Processors F-122CU, H Series

Module Model Numbers

Module Connector Types

F M P R R S* S S

*All “S ” type modules with 3--screw terminal connectors will change to Removable Terminal Block (Phoenix-style) in 2004.

900 Muting Modules

Mute Send Activates the Mute function of Mute-Receive

modules Mute-Receive

Responds to Mute activation from Mute-Send modules or switch closure

Both types connect to Mute Bus #1 and #2

Module Edge Connector

Mute Bus Architecture

Mute Bus

Rear Panel Screw Terminal

Module Ch 1

Module Ch 2

Module Ch 3

Etc.

Dual Mute Buses

Module Ch 1

Etc.

Mute Buses#1 #2

Rear Panel Screw Terminals

Mute 1

Mute 2

A-900MK2 Rear Panel View

Mute 2

GND

Mute 1

Speaker Processor Modules

Speaker Processor Modules

900 Series Module Guide

M-900MK2Mixer/Pre-amplifier

Eight Module Slots Dual Mute Buses Remote Master Volume Bass/Treble Controls Balanced, Transformer-

Isolated Outputs Auxiliary Output Bridge In/Out

P-900MK2 SeriesPower Amplifiers

60, 120 and 240 Watt Models

One Module Slot Direct Input 25/70 V and 4/8 Ohm

Speaker Outputs Protection Circuitry

900 Series In-Wall Mixer/Amplifiers

60 and 120 Watt Models

Six Module Slots (Expandable To Eight)

One Mute Bus

Graphic EQ

Compressor

25/70 V and 4/8 Ohm Speaker Outputs

Bridge In/Out

Protection Circuitry

Flush or Surface-Mount

900 Series Applications

Paging Over a Music Source

Telephone Paging and Music-On-Hold

Mute-Send/Receive Combination