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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 prior notice. Since specifications, equipment or options may not be the same in every locale, please check with your Yamaha
dealer.

European models
Purchaser/User Information specified in EN55103-1 and EN55103-2.
Inrush Current: 25A (KAX-5000)/66A (KAX-3500)/68A (KAX-2500)
Conforms to Environments: E1, E2, E3 and E4

KAX-5000

KAX-3500

KAX-2500

Power Output Level (Rated Power)

Ω

/STEREO

525 W 

× 

2

390 W 

× 

2

275 W 

×

 2

1 kHz

Ω

/STEREO

750 W 

× 

2

590 W 

×

 2

390 W 

×

 2

THD + N = 1%

Ω

/BRIDGE

1500 W 

×

 1

1180 W 

×

 1

780 W 

×

 1

Ω

/STEREO

500 W 

× 

2

350 W 

×

 2

250 W 

×

 2

20 Hz – 20 kHz 

Ω

/STEREO

700 W 

× 

2

450 W 

×

 2

310 W 

×

 2

THD + N = 0.1% 

Ω

/BRIDGE

1400 W 

×

 1

900 W 

×

 1

620 W 

×

 1

1 kHz

Ω

/STEREO

1300 W 

×

 2

1000 W 

×

 2

650 W 

×

 2

20 ms non-clip

Ω

/BRIDGE

2600 W 

×

 1

2000 W 

×

 1

1300 W 

×

 1

Power Bandwidth

Half Power 

10 Hz – 40 kHz (THD + N = 0.5 %)

Total Harmonic Distortion (THD + N)

Ω

 – 8 

Ω

/STEREO

 0.1 %

20 Hz – 20 kHz, Half Power

Ω

/BRIDGE

Frequency Response

RL = 8 

Ω

, Po = 1 W

0 dB, +0.5 dB, –1 dB f = 20 Hz – 50 kHz

Intermodulation distortion (IMD)

Ω

 – 8 

Ω

/STEREO

 0.1 %

60 Hz:7 kHz, 4:1, Half Power

Ω

/BRIDGE

Channel Separation

Half Power RL = 8 

Ω

 1 kHz

 70 dB

Vol. max

input 600 

Ω

 shunt

Residual Noise     Vol. min.

20 Hz – 20 kHz (DIN AUDIO)

 –70 dBu

SN Ratio

20 Hz – 20 kHz (DIN AUDIO)

103 dB

102 dB

100 dB

Damping Factor

RL = 8 

Ω

, 1 kHz 

 350

 200

Sensitivity (Vol. max.) Rated Power 8 

Ω

 

+6 dBu

+4 dBu

+3 dBu 

Voltage Gain (Vol. max.)

32.1 dB

Input Impedance

30 k

Ω

/balanced, 15 k

Ω

/unbalanced

Controls

Front Panel

POWER switch (Push on/Push off)
Two 31-step Volume control knobs (one per ch)

Rear Panel

MODE switch (STEREO/PARALLEL/BRIDGE)
Two FILTER switches (SUBWOOFER/LOW CUT/OFF)
Two fc knobs (25 to 150 Hz, 12 dB/octave)
YS Processing switch (ON/OFF)

Connectors

INPUT

XLR-3-31 jacks (one per ch)
1/4-inch TRS phone jacks (one per ch)

OUTPUT

Speakon jacks (one per ch)
5-way binding posts
1/4-inch phone jacks (one per ch)

Indicators

POWER

×

 1 (Green)

×

 1 (Red)

×

 1 (Red) (heatsink temp 

 85°C)

×

 2 (Red)

×

 2 (Green)

×

 1 (Yellow)

PROTECTION

TEMP
CLIP

SIGNAL

YS Processing

Load protection

POWER switch ON/OFF muting

DC-fault power supply 
shutdown

DC detection

Amp. protection

Temp. detection (heat sink temp 

 90°C), VI limiter (RL 

 1 

Ω

)

Limiter

Comp: THD 

 0.5 %

Cooling

Dual variable-speed 
fan

Single variable-speed fan

Power Requirements

United States & Canada

120 V, 60 Hz
230 V, 50 Hz
240 V, 50 Hz

Europe
Australia

Power Consumption

Idling

35 W

30 W

25 W

Output power, 4 

Ω

500 W

450 W

320 W

Dimensions (W 

×

 H 

×

 D)

480 

×

 88 

×

 456 mm

Weight

12 kg

15 kg

14 kg

Included Accessories

Security cover (with a hex wrench), Owner’s Manual

Summary of Contents for KAX-2500

Page 1: ...POWER AMPLIFIER 使用说明书 Owner s Manual EN ZH ...

Page 2: ...d by the manufacturer 12 Use only with the cart stand tripod bracket or table spec ified by the manufacturer or sold with the apparatus When a cart is used use cau tion when moving the cart apparatus combination to avoid injury from tip over 13 Unplug this apparatus during lightning storms or when unused for long periods of time 14 Refer all servicing to qualified service person nel Servicing is r...

Page 3: ...d or places that receive direct sunlight Locations subject to excessive humidity or dust accumulation Do not place the power cord close to a heater It may melt causing fire or electrical shock Hold the power cord plug when disconnecting it from an AC out let Never pull the cord A damaged power cord is a potential fire and electrical shock hazard Do not touch the power plug with wet hands Doing so ...

Page 4: ...ers This applies only to products KAX 5000 distributed by YAMAHA CORPORATION OF AMERICA Connector pin assignments Interference from Cell Phones 1 IMPORTANT NOTICE DO NOT MODIFY THIS UNIT This product when installed as indicated in the instructions contained in this manual meets FCC requirements Modifications not expressly approved by Yamaha may void your authority granted by the FCC to use the pro...

Page 5: ... engages a high pass filter and SUBWOOFER engages a low pass filter With LOW CUT or SUBWOOFER selected you can adjust the cutoff frequency from 25 to 150 Hz Each channel has its own SIGNAL and CLIP indicators The PROTECTION indicator lights up and sound output is automatically muted whenever the unit s protective circuitry is operating The TEMP indicator lights up if the unit is running hot Variab...

Page 6: ...p green when the corresponding channel s output level exceeds 2 Vrms equivalent to 1 2 W into an 8 Ω load or 1 W into a 4 Ω load 6 Volume control knobs Each control knob adjusts the volume of the corresponding channel in 31 steps from dB to 0 dB NOTE If you wish to lock in the knob settings you can fasten the sup plied security cover over the knobs so that the settings will not be disturbed How to...

Page 7: ... A are effective The Channel B frequency controls are disabled 2 ON OFF switch If you set this switch ON the amplifier adds low frequency compensation so as to enhance speaker output The results the actual change in the low frequency balance will vary accord ing to the speaker type Note that this switch is effective only if the FILTER switch is set to OFF 3 INPUT jacks Channels A B Two jack types ...

Page 8: ...B input jacks do not function Channel A and B volumes can be independently adjusted BRIDGE mode The Channel A input signal is output from the BRIDGE output jacks To adjust the volume you must use the Channel A vol ume control knob 5 SPEAKER jacks Neutrik NL4FC Speakon output connectors 5 way binding post output jacks Phone output jacks For minimum speaker impedenance values see page 9 6 GND termin...

Page 9: ...nding post output jacks When using Speakon connector When using phone jack Connection configurations for BRIDGE mode When using 5 way binding post output jacks When using Speakon connector BRIDGE 1 1 STEREO BRIDGE PARALLEL STEREO BRIDGE PARALLEL or Minimum speaker impedance 4 Ω Minimum speaker impedance 4 Ω SPEAKERS 1 1 2 2 1 1 2 3 3 2 LOCK LOCK Minimum speaker impedance 4 Ω SPEAKERS 1 1 2 2 1 1 2...

Page 10: ... not jut out from the ter minals and touch the chassis The following shows how the cable should look when correctly attached 4 Reattach the protective cover over the speaker terminals Speakon connector 1 Turn off the POWER switch 2 Insert the Neutrik NL4FC plugs into the Speakon connec tor on the rear of the amplifier and turn clockwise to lock Neutrik NL4FC plugs Phone jack 1 Turn off the POWER s...

Page 11: ...tands for Electronic Industries Alliance Ventilation panel s Use 1U size blank panel s If mounting up to four amplifiers in an open backed rack Install a ventilation panel as shown below When mounting five or more amplifi ers in an open backed rack and when mounting any number of amplifiers in a close backed rack Install ventilation panels above and below each amplifier as shown below 480 44 Unit ...

Page 12: ... 1 60 Hz 7 kHz 4 1 Half Power 8 Ω BRIDGE Channel Separation Half Power RL 8 Ω 1 kHz 70 dB Vol max input 600 Ω shunt Residual Noise Vol min 20 Hz 20 kHz DIN AUDIO 70 dBu SN Ratio 20 Hz 20 kHz DIN AUDIO 103 dB 102 dB 100 dB Damping Factor RL 8 Ω 1 kHz 350 200 Sensitivity Vol max Rated Power 8 Ω 6 dBu 4 dBu 3 dBu Voltage Gain Vol max 32 1 dB Input Impedance 30 kΩ balanced 15 kΩ unbalanced Controls Fr...

Page 13: ...F CHANNEL A ATT OFF Limiter Limiter INV Temperature Sensor Heat Sink Protection Circuit CLIP CLIP Ach Power Amp Bch Power Amp SIGNAL PROTECTION TEMP SPEAKERS CHANNEL A 3 3 1 1 2 2 1 1 1 1 2 2 2 2 A B BRIDGE CHANNEL B SIGNAL YAMAHA SPEAKER PROCESSING CHANNEL B ATT PARALLEL BRIDGE STEREO HPF Frequency 25 Hz 150 Hz POWER FAN B E B 24 24 E POWER CIRCUIT Frequency 25 Hz 150 Hz OFF LPF POWER SW ...

Page 14: ... 126 4Ω ch 6 2 3 4 436 188 249 848 214 1 3 power 8Ω ch 9 3 5 1 673 350 323 1100 278 4Ω ch 14 7 8 1 1057 500 557 1900 479 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 30 0 30 102 26 1 8 power 8Ω ch 3 2 1 7 227 98 130 443 112 4Ω ch 5 0 2 8 378 148 231 787 198 1 3 power 8Ω ch 7 3 4 0 551 260 291 993 250 4Ω ch 12 ...

Page 15: ...r wire Locate and correct the cause of the short The PC limiter circuit operates to protect the power transistors The amplifier load is excessive Use a speaker system with an impedance of at least 4 Ω STEREO PARALLEL mode or 8 Ω BRIDGE mode TEMP indicator lights The heat sink temperature has exceeded 85 C 185 F Check the ventilation slots and provide better airflow around the amplifier The TEMP in...

Page 16: ...28 2160 SWEDEN FINLAND ICELAND Yamaha Music Europe GmbH Germany filial Scandinavia J A Wettergrens Gata 1 Box 30053 S 400 43 Göteborg Sweden Tel 031 89 34 00 DENMARK Yamaha Music Europe GmbH Tyskland filial Denmark Generatorvej 6A DK 2730 Herlev Denmark Tel 44 92 49 00 NORWAY Yamaha Music Europe GmbH Germany Norwegian Branch Grini Næringspark 1 N 1345 Østerås Norway Tel 67 16 77 70 RUSSIA Yamaha M...

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