1. 900 Series Modular Amplifiers

2. Modular Design Advantages Design Flexibility One Product for Many Applications Easy to Upgrade Easy to Repair and Service TOA Reliability

3. 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

4. 900 Series Modules

5. 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

6. Mic Modules Low-Impedance Phantom Power Hi/Low Cut Filters Types Standard Mute-Send Mute-Receive Voice Gate Compressor Remote Volume

7. 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

8. 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

9. Module Model Numbers

10. Module Connector Types F M PRRS*SS * All S type modules with 3--screw terminal connectors will change to Removable Terminal Block (Phoenix-style) in 2004.

11. 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

12. Module Edge Connector

13. Mute Bus Architecture Mute Bus Rear Panel Screw Terminal Module Ch 1 Module Ch 2 Module Ch 3 Etc.

14. Dual Mute Buses Module Ch 1 Etc. Mute Buses #1 #2 Rear Panel Screw Terminals Mute 1 Mute 2

15. A-900MK2 Rear Panel View Mute 2 GND Mute 1

16. Speaker Processor Modules

18. 900 Series Module Guide

19. A-901A Mixer/Amplifier 10 Watts Two Module Slots One Mute Bus Bass/Treble Controls 25 V, 70 V and 4/8 Ohm Speaker Outputs Auxiliary Input Protection Circuitry

20. M-900MK2 Mixer/Pre-amplifier Eight Module Slots Dual Mute Buses Remote Master Volume Bass/Treble Controls Balanced, Transformer- Isolated Outputs Auxiliary Output Bridge In/Out

21. P-900MK2 Series Power Amplifiers 60, 120 and 240 Watt Models One Module Slot Direct Input 25/70 V and 4/8 Ohm Speaker Outputs Protection Circuitry

22. 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

23. 900 Series Applications

24. Paging Over a Music Source

25. Telephone Paging and Music-On-Hold

26. School Gym Sound System

27. Mute-Send/Receive Combination