User manual YAMAHA P1600

[. . . ] These amps feature high power and superb quality together with superior reliability and stability, guaranteeing the highest possible audio performance. Precautions 1. Keep the unit away from locations where it is likely to be exposed to high temperatures or humidity -- such as near radiators, stoves, etc. Also avoid locations which are subject to excessive dust accumulation or vibration which could cause mechanical damage. [. . . ] 9 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Performance Graphs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Controls and Functions s Front Panel 2 3 4 A TEMP PROTECTION POWER 25 30 6 40 ON OFF CLIP SIGNAL 15 10 25 30 B 15 10 20 20 6 40 ­dB 0 3 3 0 EEEngine 1 56 1 POWER switch and indicator This is the main POWER switch. 2 TEMP indicator When the temperature of the heat sink exceeds 85 degrees Celsius, this indicator will light red. 3 PROTECTION indicator This red LED indicator lights up for approximately 3 seconds when the amplifier is powered ON, indicating that the soft-start protection system is working. If one of the protection systems is activated during normal use, this indicator lights up and no sound is output. The speaker system is actually disconnected from the amplifier outputs when this indicator lights up. The protection systems are activated when overheating occurs or a DC voltage is present at the amplifier outputs. If the problem is corrected, the protection systems deactivate automatically, this indicator goes out, and normal amplifier operation is resumed. 4 CLIP indicators These red LED indicators light up when the respective channel's output signal distortion exceeds 1% (i. e. Output signal clipping is usually due to excessive input signal levels. 5 SIGNAL indicators These green LED indicators light up when the respective channel's output signal exceeds 2 Vrms. 6 Volume controls These volume controls allow you to adjust the volume level in 31 steps in the range between ­ dB and 0 dB. To fix the volume setting by protecting the controls, install the included security cover over the controls and tighten the screws in the holes as shown below. 15 10 25 30 6 40 0 3 ­dB 40 0 3 6 15 10 20 25 30 20 2 s Rear Panel 1 2 3 4 INPUT CHANNEL B G CHANNEL A G (BRIDGE) (PARALLEL) BRIDGE SPEAKERS CHANNEL B CHANNEL A (STEREO) 4-8/SP (BRIDGE) 8-16/SP STEREO BRIDGE STEREO PARALLEL MAX. OUTPUT 900W/8 (BRIDGE) 1 INPUT terminals (CHANNEL A, B) Three types of balanced terminals for channels A and B are provided. · XLR-3-31 type connector They are wired pin 1­ground, pin 2­hot (+), and pin 3 cold (-). 3 SPEAKERS terminals For polarity in each mode, refer to the following diagram. · STEREO, PARALLEL mode SPEAKERS CHANNEL B CHANNEL A Hot 2 3 1 Ground STEREO BRIDGE Cold · BRIDGE mode SPEAKERS CHANNEL B CHANNEL A · Phone jack They are wired tip­hot (+), ring­cold (-), and sleeve­ ground. Ring STEREO BRIDGE Sleeve Tip · Barrier strip Hot (+), Cold (-) and Ground (G). 2 STEREO/BRIDGE/PARALLEL switch This slide switch is used to set the amplifier operating mode: STEREO, BRIDGE or PARALLEL. [. . . ] 12. 7 kHz LPF IHF-A network 12. 7 kHz LPF IHF-A network 4~8/STEREO 8/BRIDGE 1 kHz, 8 8/STEREO 4/STEREO 8/BRIDGE 8/STEREO 4/STEREO 8/BRIDGE 2/STEREO Half Power, 0. 1% 4~8/STEREO 8/BRIDGE 460 W + 460 W 620 W + 620 W 1240 W 520 W + 520 W 720 W + 720 W 1440 W 1300 W + 1300 W 10 Hz~40 kHz 0. 05% 10 Hz~50 kHz, +0, ­1 dB 0. 05% 200 30 k/Balance, 15 k/Unbalanced ­80 dB 105 dB 104 dB 101 dB P3200 340 W + 340 W 440 W + 440 W 880 W 370 W + 370 W 520 W + 520 W 1040 W 950 W + 950 W P1600 160 W + 160 W 200 W + 200 W 400 W 175 W + 175 W 230 W + 230 W 460 W 350 W + 350 W Input 600 shunt Channel Separation Slew Rate 8 full swing Voltage Gain (Vol. input 600 shunt STEREO BRIDGE 65 dB, 20 Hz~20 kHz 75 dB, 1 kHz >30 V/µ sec >50 V/µ sec +5. 7 dB 32. 1 dB +4. 2 dB +1. 2 dB Sensitivity (Vol. max. ) Rated Power into 8 Front Panel Rear Panel Connectors Input POWER switch (Push on/Push off) Volume (31 position dB calibrated) Mode switch (STEREO/BRIDGE/PARALLEL) Barrier strip terminal XLR-3-31 type 1/4-inch phone jack (balanced) 5-way binding posts (heatsink temp 85°C) ×2 ×2 POWER switch ON/OFF, Muting, DC detection TEMP (heatsink temp 95°C) RL 1 Low speed (50°C), Variable, High speed (70°C) Output Indicators POWER TEMP PROTECTION (mute) CLIP OUTPUT SIGNAL Protection Circuits PC limiter Fan Circuits Power Requirements United States & Canada Europe Other 120 V, 60 Hz 230 V, 50 Hz 240 V, 50 Hz 500 W/650 VA 16 kg Security cover Ventilation panel: VP1 400 W/500 VA 15 kg 200 W/250 VA 12 kg 480 × 103. 5 × 455 mm Power Consumption Dimensions (W × H × D) Weight Accessories Options 0 dB=0. 775 Vrms, Half Power=1/2 Power Output Level (Rated Power) Specifications subject to change without notice. 8 s Block Diagram SIGNAL Ach Power Amp CHANNEL A A CHANNEL A (BRIDGE) (PARALLEL) CLIP G INPUT G Temperature Sensor (Heat Sink) CLIP CHANNEL B PARALLEL BRIDGE STEREO Bch Power Amp CHANNEL B PC Limiter SIGNAL Protection Circuit PROTECTION TEMP PC Limiter SPEAKERS B s Dimensions 26 61. 2 D:455 4. 4 H:103. 5 379. 6 424 W:480 308 15. 5 88 45 Unit: mm 55. 2 292 9 s Performance Graphs P4500 5k Mode:STEREO Both ch Driven RL=4, f=1kHz P3200 5k Mode:STEREO Both ch Driven RL=4, f=1kHz Power Consumption [W] 1k Power Consumption [W] 1 10 100 1k 1k 100 100 20 20 1 10 100 1k Output Power [W] Output Power [W] Mode:STEREO Both ch Driven RL=4, f=1kHz P1600 5k Power Consumption [W] 1k 100 20 1 10 100 1k Output Power [W] Troubleshooting The following table lists the main causes of abnormal operation and the corrective measures required, as well as the protective circuit operation in each case. Indicator Probable Cause There is a short at a speaker terminal, amplifier terminal, or wire. [. . . ]