Summary of KAX-2500
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Power amplifier 使用说明书 owner’s manual en zh.
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2 the above warning is located on the top of the unit • explanation of graphical symbols the lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient ...
Page 3: Precautions
3 precautions — for safe operation — warning ● connect this unit’s power cord only to an ac outlet of the type stated in this owner’s manual or as marked on the unit. Failure to do so is a fire and electrical shock hazard. ● do not allow water to enter this unit or allow the unit to become wet. Fire...
Page 4: Fcc Information (U.S.A.)
4 — for correct operation — ● xlr-type connectors are wired as follows pin 1: ground; pin 2: hot (+); pin 3: cold (–). ● use of a mobile phone near this unit may induce noise. If noise occurs, move the phone further from the unit. Always turn the power off when the amplifier is not in use. Illustrat...
Page 5: Introduction
5 introduction thank you for your purchase of the yamaha kax-5000, kax3500 or kax-2500 power amplifier. These kax-series amplifiers fully incorporate yamaha’s renown technological expertise, and offer high reliability, rock-solid stability, and superb acoustic characteristics—all in a trim, 2u-sized...
Page 6: Controls and Functions
6 controls and functions ■ front panel 1 power switch and indicator press to toggle the power on or off. The power indicator lights up green when the power is on. 2 temp indicator lights up red if the heat sink temperature exceeds 85°c (185°f). 3 protection indicator lights up red to indicate that p...
Page 7: ■ Rear Panel
7 ■ rear panel 1 filter switch and frequency adjustment knob (one pair for each channel) use these controls to select the filter type and adjust the cutoff frequency on each channel (a and b). You use the filter switch to select the filter, as follows. Off ...................... Do not use any filte...
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8 4 stereo/parallel/bridge switch use this switch to select the operating mode. • stereo mode channels a and b operate independently (as with a conven- tional stereo amplifier). The channel a input goes to the chan- nel a output jacks, and the channel b input goes to the channel b output jacks. • pa...
Page 9: Speaker Connections
9 speaker connections ■ speaker impedance speakers can be connected to the amplifier as shown below. Note that speaker impedance will vary according to the connection method and the number of speakers. Please be sure that your speakers ’ impedance is not less than the relevant minimum value indicate...
Page 10: ■ Wiring
10 ■ wiring 5-way binding post (1) turn off the power switch. (2) remove the cover attachment screws and remove the pro- tective cover from the speaker terminals. (3) remove about 15 mm of insulation from the end of each speaker cable, and pass the bare wire through the holes in the appropriate spea...
Page 11: Rack Mounting
11 rack mounting mounting in a standard eia rack if you are mounting multiple power amplifiers in a rack, be sure to install ventilation panel(s) as shown below. Also be sure to use metal brack- ets (one on each side) to support the rear of each amplifer. Note: eia stands for electronic industries a...
Page 12: Specifications
12 specifications ■ general specifications 0 dbu=0.775 vrms, half power=1/2 power output level (rated power) specifications and descriptions in this owner’s manual are for information purposes only. Yamaha corp. Reserves the right to change or modify products or spec- ifications at any time without ...
Page 13: ■ Block Diagram
13 ■ block diagram kax-5000 kax-3500, kax-2500 channel a [bridge] [parallel] input channel b ba state variable active filter on off yamaha speaker processing state variable active filter ba hpf lpf channel a att off limiter limiter inv temperature sensor (heat sink) protection circuit clip clip ach ...
Page 14: ■ Dimensions
14 ■ dimensions ■ current draw kax-5000 kax-3500 line current (a) power (w) thermal dissipation 100/120v 230/240v in out dissipated btu/h kcal/h standby 0.08 0.04 5 0 5 17 4 idle 1.0 0.5 35 0 35 119 30 1/8 power 8 Ω/ch 4.0 2.2 277 131 146 499 126 4 Ω/ch 6.2 3.4 436 188 249 848 214 1/3 power 8 Ω/ch 9...
Page 15: Troubleshooting
15 kax-2500 1/8 power is typical of program material with occasional clipping. Refer to these figures for most applications. 1/3 power represents program material with extremely heavy clipping. Test signal: pink noise, bandwidth limited from 22hz to 22khz 1w = 0.860kcal/h, 1btu = 0.252kcal note that...
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For details of products, please contact your nearest yamaha representative or the authorized distributor listed below. 关于各产品的详细信息，请向就近的 yamaha 代理商或下列 经销商询问。 head office yamaha corporation, pro audio division nakazawa-cho 10-1, naka-ku, hamamatsu, japan 430-8650 tel: +81-53-460-2441 canada yamaha can...