Yamaha P2050 - About This Manual; Scope of the Manual; Manual Organization

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About this Manual2
Index3
Brief Operating Instructions4
P2050 Front Panel4
P2050 Rear Panel (U.S. Model)4
Introduction5
General Specifications6
Monaural Mode Specifications7
Performance Graphs & a Discussion of Specifications8
Normal (Stereo) Graphs8
Mono Mode Graphs9
Power Output12
Types of Power Ratings12
Power Output Versus Load12
Distortion12
Frequency Response13
Offset Voltage13
Power Bandwidth13
Phase Response13
Rise Time14
Slew Rate14
Output Impedance14
Damping Factor14
The Distinction between Professional and HI-FI Equipment16
Impedance16
Operating Levels17
Dynamic Range17
Dynamic Range in an Audio System18
Gain Overlap and Headroom19
Input Sensitivity Ratings19
Professional Equipment Advantages19
Typical Gains and Losses in a System19
Installation and Detailed Operation20
Physical Mounting20
Rack Mounting for Portable Usage20
P2050 with Cooling Fans20
Regarding Input Impedance and Termination21
Cabling and Impedance Matching21
Attenuation Pad Construction and Resistor Values21
Pads Constructed in Mini-Boxes22
Matching Transformer Box22
Step up Transformer Box22
Transformer Availability23
Bridging Transformer Box23
Step-Up Transformer Box23
Input Impedance Matching for the P205024
Voltage Division Diagrams24
Level Matching and Headroom24
Headroom Adjustments24
Cabling the System25
Example of Crosstalk25
Cable Routing in Equipment Rack25
"Chaining" of Inputs for Mono Operation26
Input Connection for Mono Operation into26
Effects of Different Sized Wire Gauge on Power26
Connectors26
Cable and Connector Wiring Configurations27
Wiring an RCA-Type Pin Plug27
Wiring a Male XLR Connector28
Wiring a Female XLR Connector29
Wiring a Standard Phone Plug (2-Conductor)30
Wiring a Tip, Ring & Sleeve Phone Plug (3-Conductor)30
Use of the Input Polarity Switch31
Output Impedance Matching31
Speakers in Series31
Circuit as Seen by One Speaker of Series Pair31
Actions of the P2050 Protection Circuits32
Grounding and Shielding32
Definitions32
Two Possible Ground Loops in an Audio System32
Use of Balanced Lines33
Use of Shields33
Poor Quality Shielded Cable33
Telescoping Shield33
Avoiding Ground Loops in an Unbalanced System34
Avoiding a Potential Ground Loop When Using Two Mixers and a MIC Splitter34
Minimizing Hum with Unavoidable Ground Loops34
Grounding on the Road34
Use of Ground Lift Switch35
Properly Wired 120 VAC Outlet35
Lifted Ground35
Reversed Polarity35
240 AC on 120 AC Outlet36
120 AC Outlet Connected to Dimmer Circuit36
Other Safety Considerations36
Mono Operation36
Output Connections for Operating P2050 in "Mono" Mode37
Applications38
Biamplification and Triamplification38
Headroom38
Advantages of Biamplification38
When to Use a Traditional, Passive Crossover39
Realizing the Advantages39
Criteria for Biamped Systems39
Crossover Frequency and Slope39
Selection of a Crossover (Dividing Network)40
Echo, Reverb, and Delay40
Compression and Limiting40
Biamplifier System Showing Placement of Optional Limiters40
Equalization, High and Low Pass Filter41
Room Equalization41
Graphic Equalizers41
How to Use 1-Octave Graphic Equalization41
Parametric Equalizers42
Actions of a Parametric Equalizer42
Actions of Tone Controls42
Actions of Typical High and Low-Pass Filters42
Equalizer Problems43
Speaker Protection43
Fuses43
Capacitors43
High Pass and Low Pass Filters44
Specific Applications44
Studio Monitoring44
Recording Studio Monitor System (Biamplified with Yamaha F-1030 Frequency Dividing Networks)44
Concert Sound System45
Portable Instrument Amplifier46
Headphone Distribution System46
Two Versions of Mono Headphone Distribution System47
Stereo Headphone Distribution System47
Headphone Distribution Box for Use with High Impedance Phones Only47
Headphone Distribution Box with Volume Controls, for Use with Low And/Or High Impedance Phones47
Discotheque48
Combination Disco/Live Club Sound System Setup48
Commercial Sound Systems49
Other Uses49
Factory Paging System49
Appendix50
Definition of Terms: Db, Dbv, Dbv, Dbm and Db SPL50
Special Use of Db (Volts) in this Manual50
Ohm's Law51
Power51
Voltage Sources52
Elements of an Impedance52
Series and Parallel Impedance Connections52
Series and Parallel Impedances53
Voltage and Current Division53
Balanced, Unbalanced and Floating Circuits54
Transformers54
Other Considerations55

Yamaha P2050 - About This Manual; Scope of the Manual; Manual Organization

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