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POWER AMPLIFIER
Owner’s Manual
Mode d’emploi
Bedienungsanleitung
Manual de instrucciónes
CLIP
AB
SIGNAL
TEMP
15 15
20 20
PROTECTION
POWER
25 25
10 10
30 30
6 6
40 3 40 3
∞ 0 –dB ∞ 0
ON OFF
EEEngine
M
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Introduction Thank you for purchasing a Yamaha P4500/3200/1600 series power amplifier. This series of audio amps was developed from Yamaha's wealth of experience in building PA equipment and its tradition of careful attention to every detail of circuit design. These amps feature high power and superb quality together with superior reliability and stability, guarantee- ing the highest possible audio performance. Main features of the P4500/P3200/P1600 series • Three types of input jack (balanced X
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Precautions 1. Avoid excessive heat, humidity, dust and vibration. 5. Make sure power is off before making or removing connections. Keep the unit away from locations where it is likely to be exposed to high temperatures or humidity — such as Always turn the power OFF prior to connecting or near radiators, stoves, etc. Also avoid locations which disconnecting cables. This is important to prevent dam- are subject to excessive dust accumulation or vibration age to the unit itself as well as other c
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Controls and Functions n Front Panel 23 4 CLIP AB SIGNAL TEMP 15 15 20 20 PROTECTION POWER 25 10 25 10 30 30 6 6 40 3 40 3 ∞ 0 –dB ∞ 0 ON OFF EEEngine 1 5 6 1 POWER switch and indicator 4 CLIP indicators This is the main POWER switch. Press to power ON the These red LED indicators light up when the respective amplifier. Press again to power OFF. The POWER channel’s output signal distortion exceeds 1% (i.e. clip- indicator lights up when the amplifier is powered ON. ping). Output signal c
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n Rear Panel 14 2 3 INPUT SPEAKERS (BRIDGE) CHANNEL B CHANNEL A CHANNEL B CHANNEL A (PARALLEL) (STEREO) GG 4-8Ω/SP BRIDGE (BRIDGE) 8-16Ω/SP STEREO BRIDGE STEREO PARALLEL MAX. OUTPUT 450W/4Ω (STEREO) MAX. OUTPUT 900W/8Ω (BRIDGE) 1 INPUT terminals (CHANNEL A, B) 3 SPEAKERS terminals Three types of balanced terminals for channels A and B For polarity in each mode, refer to the following dia- are provided. gram. Channel A input terminal is used in Bridge and Parallel • STEREO, PARALLEL mode mode.
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n Modes: STEREO/PARALLEL/BRIDGE STEREO mode BRIDGE mode In this mode, channels A and B operate independently In this mode, the CHANNEL A input signal will be (as a conventional stereo amp). output from the BRIDGE output jacks. In this case, use The CHANNEL A input signal will be output from the the front panel (channel) A volume control to adjust the CHANNEL A output jacks, and the CHANNEL B input volume. signal will be output from the CHANNEL B output jacks. PARALLEL mode In this mode, the CHAN
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Caution for Speaker Connection 1. Turn off the POWER switch. • Speaker fuse The output capacity of your amplifier is very high: 460 2. Remove the cover attachment screw(s) and remove the W+460 W (8W ) in stereo and 1240 W (8W ) in monaural protective cover from the speaker terminals. on the P4500; 340 W+340 W (8W ) in stereo and 880 W (8W ) in monaural on the P3200; 160 W+160 W (8W ) in stereo and 400 W (8W ) in monaural on the P1600. Be sure to use a speaker system that has sufficient input cap
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Rack Mounting n Mounting in an EIA standard rack If multiple high-power amp units are mounted in a rack with poor ventilation, the heat from the amps will cause the interior of the amp to become very hot, causing the performance of the amps to be impaired. When mounting amps in a rack, you must make provision for ventilation so that the heat can escape. When mounting amps in a rack, please attach ventilation panels above and below the amp to allow air circulation. When doing so, it is necessary
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n Portable Rack Mounting The amplifier intakes cool air through the front panel and exhausts warm air out the rear panel. When mounting amplifiers in a portable rack, make sure the rear panel is completely open for ventilation. (Side View) (Rear View) Completely open Front INPUT SPEAKERS (BRIDGE) CHANNEL B CHANNEL A CHANNEL B CHANNEL A (PARALLEL) GG (STEREO) BRIDGE 4-8Ω/SP (BRIDGE) Air intake Air exhaust 8-16Ω/SP STEREO BRIDGE STEREO PARALLEL MAX. OUTPUT 450W/4Ω (STEREO) MAX. OUTPUT 900W/8Ω (
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Specifications n General Specifications P4500 P3200 P1600 Power Output Level (Rated Power) 8W /STEREO 460 W + 460 W 340 W + 340 W 160 W + 160 W 20 Hz~20 kHz 4W /STEREO 620 W + 620 W 440 W + 440 W 200 W + 200 W 0.05% 8W /BRIDGE 1240 W 880 W 400 W 1 kHz 8W /STEREO 520 W + 520 W 370 W + 370 W 175 W + 175 W 0.05% 4W /STEREO 720 W + 720 W 520 W + 520 W 230 W + 230 W 8W /BRIDGE 1440 W 1040 W 460 W 1 kHz, 20 ms, no clip 2W /STEREO 1300 W + 1300 W 950 W + 950 W 350 W + 350 W Power Bandwidth Half Power,
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n Block Diagram SIGNAL Ach Power Amp CHANNEL A A PC Limiter CHANNEL A (BRIDGE) (PARALLEL) CLIP G Temperature PROTECTION Protection INPUT Sensor SPEAKERS Circuit TEMP G (Heat Sink) CLIP CHANNEL B SIGNAL Bch Power Amp PARALLEL BRIDGE CHANNEL B STEREO B PC Limiter n Dimensions 424 W:480 308 Unit: mm 9 45 379.6 26 15.5 88 4.4 D:455 H:103.5 55.2 292 61.2
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n Performance Graphs Mode:STEREO Mode:STEREO P4500 P3200 Both ch Driven Both ch Driven RL=4Ω, f=1kHz RL=4Ω, f=1kHz 5k 5k 1k 1k 100 100 20 20 1 10 100 1k 1 10 100 1k Output Power [W] Output Power [W] Mode:STEREO P1600 Both ch Driven RL=4Ω, f=1kHz 5k 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 Remedy Prot
