Yamaha P2200, 2201 Power Amp Owners Manual 电路图.pdf

YAMAHA AUTHORIZED PRODUCT MANUAL P-2200/2201 SYSTEM AMPLIFIER RadioFans.CN 收音机爱 好者资料库 P-2200/2201 OPERATING MANUAL ABOUT THIS MANUAL SCOPE The P-2200 is a system oriented amplifier, made to be used in conjunction with mixers, consoles, frequency dividing networks and speakers those made by Yamaha or by other manufacturers. Like any power amplifier, the P-2200s performance depends on system design and installation, in addition to its own capabilities. Thus, the P-2200 Operating Manual is system oriented, describing system design parameters and installation techniques, as well as the operation and performance of the P-2200. Additionally, this manual reviews a few of the basic mathematic tools used in system design, from dB to Ohms law. ORGANIZATION We recommend that you read the entire Operating Manual. However, if you are using the P-2200 in an existing system, and you are familiar with high power amplifiers, the BRIEF OPERATING INSTRUCTIONS, Pages One 1 0dB = 100 Watts into 8 ohms. C. Thermal Warning Indicator Warns of overheating before thermal protection circuit turns off the AC power. D. Power Indicator Glows when the power switch is on. E. On-Off Switch Controls AC power to the P-2200 or P2201. NOTE: The P2201 is identical to the P-2200 except there are no Peak Reading Meters. Both are made to be mounted in a standard 19 wide electronic equipment rack. Each of them takes up 7 (17.6cm) of vertical space, and extends 13 (33.0cm ) behind its front panel. For portable racks, we recommend bracing the rear of the amplifiers. Fig. 2A - P-2200 Rear Panel* Fig. 2B - P2201 Rear Panel* A. Input Connectors The two XLR input connectors on each channel are unbalanced and are wired in parallel with each other and with the two phone jacks (tip/sleeve type). B. Input Polarity Switch Determines the polarity of the two XLR input connectors (Pin 2 or Pin 3 hot); does not affect the two phone jacks. See diagram on the rear panel. NOTES: 1. Input impedance is 25k-ohms minimum; +4dB (1.23V) produces 230 watts output into 8 ohms (44.7V). 2. Input channels may be parallelled by connecting them together with phone to phone or XLR to XLR cables as shown on Page SIX 7. 3. Input transformers for matching or isolation, should be located several inches from the P-2200 or P2201s power transformer for maximum hum rejection. C. Output Connectors Standard 5-way binding posts (3/4 spacing) accept banana plugs or direct-wired connections. NOTES: 1. Maximum power output into 8 ohms is 230 watts; power output rises at lower impedances. 2. Protection circuitry towers power output when load impedance falls below 2.5 ohms. D. AC Power Cord For the U.S. and Canadian models, the P-2200/2201 require 117 VAC 50 or 60 Hz line (105 V min., 135 V max.; 8 amps max. at 120 volts). For the Australian model: 240V AC 50 or 60 Hz. For other territories models, an internal voltage selector (220 V/240 V switchable) is provided near the rear panel. In this case 220 V is factory-preset. If you want to change into 240 V line, consult your nearest Yamaha dealer. E. Fuses 7 amp, 125 volt (x 2), type AGC (3AG); U.S. and Canadian models only. 4 amp, 250 volt (x 2); other territories models. Fuses should always be replaced with same size and type. If the fuses blow consistently, the amplifier should be checked by a qualified Yamaha service technician. F. AC Accessory Outlets These convenience outlets are made for low power cooling fans. Not provided in certain areas. The rear panels shown here are subject to U.S. specifications. INTRODUCTION The P-2200 is not just another big amplifier; it is an exciting new approach to high power sound. Yamahas leadership is clearly demonstrated by the P-2200s pro- fessional features, sophisticated design, and uncom- promising performance. PEAK READING METERS* Instead of the more common and slow responding VU meters, the P-2200 has PEAK READING METERS that accurately display a full five decades (50dB) of output level. The peak meters have large, illuminated faces marked with dB and with watts into 8 ohms. The fast responding meters provide a better way to see the program dynamics, the transient power demands placed on the system, and the available headroom. By indicating headroom, the meters help the operator avoid over- driving the system, thereby preventing the clipped waveforms so dangerous to drivers and loudspeakers. CALIBRATED INPUT ATTENUATORS The P-2200 has log-linear INPUT ATTENUATORS to complement its peak reading meters. The input attenua- tors are marked in 22dB-calibrated steps, detented for extra accuracy. The attenuators provide a smooth, noise free transition from the highest to the lowest audio level. dB-calibrated input attenuators have numerous advantages: on the road, they allow predictable and repeatable setups; in commercial sound applications, they allow easy, accurate input sensitivity adjustments; in studios or discos, they let operators simultaneously adjust the level of two channels (or two programs on separate amplifiers) with precise tracking. INPUT AND OUTPUT CONNECTIONS INPUT CONNECTORS for each channel include one male and one female XLR connector (unbalanced) plus two parallel phone jacks. This provides the flexi- bility necessary for convenient bridging to another amplifier, as well as for adapter-free connection to almost any mixer. A POLARITY switch allows either pin 2 or pin 3 of the XLR to be chosen as the hot lead, satisfying DIN/JIS or USA standards. Outputs are standard five way binding posts, usable with high current banana plugs or direct wired connections. MONAURAL OPERATION The P-2200 may be converted to a monaural super amplifier by inserting two matched transformers ahead of the inputs, feeding the same signal to both, and reversing the POLARITY switch on one input. This creates a transformerless balanced output, the speaker load bridged across the hot terminals of both channels. In this mode, the P-2200 is suitable for driving almost any load, including highly reactive 70-volt commercial speaker lines. With a full 400 watts into 16 ohms, the P-2200 in mono mode eliminates the need for several smaller 70-volt amplifiers. PERFORMANCE The P-2200s performance is as impressive as its features. At a sustained output of 230 watts into 8 ohms (for each channel), there is plenty of punch to reproduce the powerful peaks essential to clean studio monitoring. High power handling also makes the P-2200 an unbeat- able choice for live rock or disco sound systems, where an amplifier can really cook all night long. Power alone is no virtue; the P-2200 has ultra-low distortion, less than 0.05% THD at full rated power - the kind of low distortion that is undetectable by even the most critical listeners. A high damping factor of better than 300 at frequencies below 1kHz reduces the tendency for speaker cone overshoot, giving tighter and better defined bass response. On the other end, the P-2200s frequency response extends well beyond 100kHz, enabling it to accurately reproduce the most complex musical wave- forms even the tortuous output of todays synthe- sizers. However, high frequency response has not been achieved at the expense of stability; in fact, the P-2200 is rock steady. Even when connected to highly reactive multi-speaker loads, there is no tendency to shut down or take off into spurious oscillation. MECHANICAL CONSIDERATIONS The P-2200 is constructed to withstand the high G forces encountered on the road. Its solid front panel mounts in any standard 19-inch rack, and, for a large amplifier, the P-2200 weighs a modest 44 pounds (20kg)* Front panel controls and meters are recessed to avoid damage or accidental setting changes, and are further protected by a pair of sturdy carrying handles. Inside and out, the P-2200 is extremely reliable. Still, should service ever be required, the unit is designed for easy access. Massive side-mounted heat sinks are designed for efficient cooling, making fans unnecessary in all but the most severe thermal operating conditions. Four non-conductive feet ensure proper air flow when the amplifier is shelf mounted, and avoid inadvertent ground loops. Multiple protection circuits make the amplifier nearly abuse proof and eliminate the need for troublesome DC power supply fuses. * The P2201 does not have the Peak Reading Meters. * * The P2201 weighs 42 pounds (19kg) GENERAL SPECIFICATIONS Power Output Per Channel: (Refer to Figure 3. Ambient room temperature for tests: 25-degrees Centigrade.) 200 Watts continuous average sine wave power into 8 ohms with less than 0.05% THD, (Total Harmonic Distortion), over a bandwidth of 20Hz to 20kHz, both channels driven. 230 Watts continuous average sine wave power into 8 ohms with less than 0.05% THD, at 1 kHz, both channels driven. Frequency Response: (Refer to Figure 5.) +0dB, -0.5dB, 20Hz to 50kHz. Total Harmonic Distortion: (Refer to Figure 6.) Less than 0.005% 50 Watts, 8 ohms, 1kHz. Less than 0.01% 150 Watts, 8 ohms, 20Hz to 20kHz. Intermodulation Distortion: (Refer to Figure 7.) Less than 0.01% using frequencies of 70Hz and 7kHz, mixed in a ratio of 4:1, single channel power output of 150 Watts into 8 ohms. Input Sensitivity: An input of +4dB* (1.23V), 0.5dB, produces an output of 230 Watts into 8 ohms (maximum output power), INPUT attenuator set for maximum level. Input Impedance: 25k-ohms, minimum (unbalanced). Damping Factor: ( 8 ohms / (Refer to Figure 8.) Greater than 300 at any frequency from 20Hz to 1kHz; greater than 70 at any frequency from 20Hz to 20kHz. Actual Output Impedance: (Refer to Figure 9.) Less than 0.04 ohms, from 20Hz to 10kHz. Hum and Noise: At least 110dB signal-to-noise ratio (l.H.F./A.S.A. No. Z24.3-1944). Rise Time: 3.8 microseconds, or better (10%-90% of 1 volt 1kHz square wave output). Slew Rate: 45 volts per microsecond, or better (at 175 Watts into 8 ohms, 200kHz square-wave input). Channel Separation: (Refer to Figure 10.) At least 82dB at 1kHz, at least 75dB at 20kHz. *In these specifications, when dB represents a specific voltage, 0dB is referenced to 0.775V. dB is a voltage level, whereas dBm is a power level. 0dBm is referenced to 1mW (0.775V driving a 600-ohm termination). For example, when 12.3V is fed to a high impedance, the level is designated +24dB. When +24dB (12.3 volts) drives a 600-ohm termination, the level is designated +24dBm. The level in dB is specified, wherever applicable, to avoid confusion when the input is fed by various low and high impedance sources. See the APPENDIX beginning on Page EIGHT 1 for a further discussion of dB. Phase Shift: (Refer to Figure 1 1 . ) 20Hz to 20kHz, 10 degrees. Offset Voltage: Less than 10mV DC. Unit Step Function Response: (Refer to Figure 27.) See scope photo (Page FOUR 4) and discussion, Page FOUR 6. Thermal Specifications: Massive black anodized heat sinks are thermally joined with the chassis, thereby utilizing the entire amplifier as a heat sink. Protection Circuits: Thermal warning light turns on when heat sink temperature reaches 100-degrees Centigrade. A self-resetting thermal switch shuts down the AC power if the power transformer winding temperature reaches 130-degrees Centigrade. See Page SIX 13 for power overload circuit specs. Turn On/Turn Off Specs: There is no turn off transient; the turn on transient is minimal (see Page SIX 13). Warm up time is less than 0.2 seconds. Power Requirements: For the U.S. and Canadian models: AC, 120 Volts nominal, 50-60Hz (105V min., 135V max.); 8 amperes maximum at 120V AC; 960 volt-amperes maximum at 120 Volts; approximately 57 volt- amperes at idle. For other territories models: 1,300 Watts, 220 or 240 Volts AC nominal, 50-60Hz. Efficiency: (Refer to Figure 12.) As high as 63%; see Page FOUR 2. NOTE: All performance specifications are made on U.S. and Canadian models at an AC line voltage of 120 Volts 1%, using a 1% nonreactive load resistor at an ambient room temperature of 25-degrees Centigrade. Also effective for other territories models. Input Connectors: One male and one female XLR connector in parallel, pin 2 hot, pin 3 connected to pin 1 (shield); switchable for pin 3 hot. XLRs are un- balanced and in parallel with two tip-sleeve (standard) phone jacks. Output Connectors: Standard 3/4-inch spacing, 5-way binding posts. Meters and Indicators: Two peak reading meters (one per channel) indicate the instantaneous power output, over a 5-decade (50dB) range. 0dB represents 100 Watts into 8 ohms. (P-2200 only) One power ON indicator LED; one Thermal Overload indicator LED. Meter Rise Time (P-2200 only): Less than 10 milliseconds; (-40dB to 0dB on the scale). Meter Release Time (P-2200 only): Less than 0.8 seconds; (0dB to -20dB on the meter scale). Meter Accuracy (P-2200 only): See graph, Figure 13, Page FOUR 2. Controls: 22-position, log-linear, detented, and dB-calibrated INPUT ATTENUATORS (one per channel) attenuate input signal in 2dB steps from 0dB attenuation to -34dB, then steps of -37dB, -42dB, -50dB, infinity; Power (ON-OFF) switch; INPUT POLARITY switches. Fuses: AGC (3AG) type, 7-amps x 2 parallel fuses for the AC line input (U.S. and Canadian models). 4-amps x 2 parallel fuses for the AC line input (other territories models). Dimensions: Mounts in a standard 19-inch (48cm) rack. 7 high (17.6cm); maximum depth behind front panel is 13 (33.0cm); maximum depth including front handles 14-1/2 (37.9cm). Weight: P-2200; 44 pounds (20kg), P2201; 42 pounds (19kg). Color: Semi-gloss black. MONAURAL MODE SPECIFICATIONS Power Output: (Refer to Figures 14 and 15.) 400 Watts continuous average sine wave power into 16 ohms with less than 0.05% THD, 20Hz to 20kHz. Frequency Response: (Refer to Figure 16) +0dB, -1dB, 20Hz to 50kHz. Total Harmonic Distortion: (Refer to Figures 17 and 18.) Less than 0.01% 300 Watts into 16 ohms at 1kHz. Intermodulation Distortion: Less than 0.05% using frequencies of 70Hz and 7kHz, mixed in a ratio of 4:1, at a power output of 200 Watts into 16 ohms. Input Sensitivity: An input of 0dB (0.775 Volts), 0.5dB, produces an output of 200 Watts into 16 ohms (INPUT attenuator set for minimum attenuation, maximum level). Input Impedance: 25K-ohms minimum (unbalanced). Damping Factor: ( 16 ohms) (Refer to Figures 19 and20). Greater than 220 at any frequency from 20Hz to 1kHz; greater than 100 at any frequency from 20Hz to 20kHz. Hum and Noise: At least 110dB signal-to-noise ratio (I.H.F./A.S.A. No. Z24.3-1944). Slew Rate: 35 volts per microsecond, or better, at 100 Watts into 16 ohms, 200kHz square wave input. Specifications subject to change without notice. PERFORMANCE GRAPHS the 10mV (10 one-thousandths of a volt) level from the P-2200 is insignificant. UNIT STEP FUNCTION RESPONSE (Refer to Figure 27) A unit step function is like the leading edge of a square wave; it goes up, but never comes down. The response to this input indicates the output of the P-2200 for a DC input signal which might come from a faulty direct coupled preamplifier or mixer. Note that the