Crown Micro-Tech 1200 - Reactive Loads Test; ODEP Limiting Test; LF Protection Test; Signal to Noise Ratio Test

Micro-Tech Series Power Amplifiers
page 3
Operation Manual
Table of Contents
Important Safety Instructions ........................... 2
1 Welcome .......................................................... 4
1.1 Features ...................................................... 4
1.2 Unpacking Your Amplifier ........................... 4
2 How to Use This Manual ............................... 4
3 Setup .................................................................5
3.1 Unpack Your Amplifier ............................... 5
3.2 Install Your Amplifier ................................. 5
3.2 Ensure Proper Cooling .............................. 5
3.4 Choose Input Wire and Connectors ........... 6
3.5 Choose Output Wire and Connectors ........ 7
3.6 Wire Your System ...................................... 8
3.6.1 Stereo Mode ..................................... 8
3.6.2 Bridge-Mono Mode .......................... 8
3.6.3 Parallel-Mono Mode ........................ 8
3.7 Set Input Sensitivity ................................... 9
3.8 Set Ground Lift Switch ............................... 9
3.9 Connect to AC Mains ................................ 9
3.10 Startup Procedure .................................... 9
4 Operation ........................................................ 10
4.1 Precautions ................................................ 10
4.2 Controls, Indicators and Connectors .......... 11
4.2.1 Front Panel Facilities ......................... 11
4.2.2 Rear Panel Facilites ............................ 12
5 Advanced Features and Options ...................................... 13
5.1 Protection Systems ........................................................ 13
5.1.1 Odep ..................................................................... 13
5.1.2. Ultrasonic and Radio Frequency Protection ......... 13
5.1.3 Drive Protection .................................................... 13
5.1.4 Transformer Thermal Protection ........................... 13
5.1.5 Fuses and Circuit Breakers ................................... 13
5.2 Accessories ................................................................... 14
5.2.1 Cooling Fan Options ............................................ 14
5.2.2 Input Connectors Option ..................................... 14
5.3 Filter Cleaning ............................................................... 14
6 Principles of Operation ..................................................... 15
6.1 Overview ....................................................................... 15
6.2 Circuit Theory ............................................................... 15
6.2.1 Stereo Operation ................................................... 16
6.2.2 Bridge-Mono Operation ........................................ 17
6.2.3 Parallel-Mono Operation ...................................... 17
7 Troubleshooting .................................................................. 18
8 Specifications ..................................................................... 19
9 AC Power Draw and Thermal Dissipation ..................... 21
10 Service .............................................................................. 23
10.1 Worldwide Service ........................................................ 23
10.2 US and Canada Service ................................................ 23
10.2.1 Service at a US or Canada Service Center .......... 23
10.2.2 Factory Service ................................................... 23
10.2.3 Factory Service Shipping Instructions ................ 23
11 Warranty ............................................................................. 24
Crown Factory Service Information Form ................................... 27