Troubleshooting Guide

What might appear to be a malfunction in your unit may just be the result of slight misoperation or miswiring. Before calling service, first check the following table for possible problems.

PROBLEM

POSSIBLE CAUSE

SOLUTION

No sound.

• Input (or output) cables are

(No sound from one side.)

disconnected.

 

• Protection circuit may be

 

activated.

 

• The fuse may be blown

 

because the volume was too

 

high.

•Connect the input (or output) cables.

•Check connections by referring to "Protection function".

•Replace the fuse with a new fuse and use a lower volume.

The output level is too small (or too large).

The input sensitivity adjusting

Adjust the control correctly

control is not set to the correct

referring to “Controls”.

position.

 

The sound quality is bad. (The sound is distorted.)

•The speakers cable are connected with wrong + / - polarity.

•A speaker cable is pinched by a screw in the car body.

•The switches may be set improperly.

•Connect them properly checking the + / - of the terminals and cables well.

•Connect the speaker cable again so that it is not pinched by anything.

•Set switches properly by referring to "System examples".

Specifications

Specifications subject to change without notice.

 

Audio Section

KAC-726

KAC-526X

Max Power..........................................................................Output (4 Ω )

200 W ⋅ 2

70 W ⋅ 2

Normal

Bridge

600 W ⋅ 1

200 W ⋅ 1

Rated Power Output (4 Ω )

100 W ⋅ 2

35 W ⋅ 2

Normal (DIN45324, +B=14.4 V)

Bridge (1 kHz, 0.8 % THD)

300 W ⋅ 1

100 W ⋅ 1

Rated Power Output (2 Ω )

150 W ⋅ 2

50 W ⋅ 2

Normal (1 kHz, 0.8 % THD)

Frequency Response (+0, –1 dB)

5 Hz ~ 50 kHz

5 Hz ~ 50 kHz

Signal to Noise Ratio

100 dB

100 dB

Sensitivity (MAX) (rated output)

0.2 V

0.2 V

Sensitivity (MIN) (rated output)

5.0 V

5.0 V

Input Impedance

10 kΩ

10 kΩ

Low Pass Filter (12 dB/oct.)

80 Hz

80 Hz

General

KAC-726 KAC-526X

Operating Voltage (11 ~ 16 V allowable)

................................14.4 V

14.4 V

Current Consumption (1 kHz, 10% THD)

..................................28 A

16 A

Dimensions (W ⋅ H ⋅ D)

220 ⋅ 52 ⋅ 300 mm

220 ⋅ 52 ⋅ 160 mm

Weight

3.0 kg

1.6 kg

9

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Kenwood Troubleshooting Guide, Specifications subject to change without notice, Audio Section KAC-726 KAC-526X
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KAC-726, 526 specifications

The Kenwood KAC-726 is a notable amplifier that exemplifies the brand's commitment to high-quality sound performance. Designed for those who appreciate rich audio, the KAC-726 combines power, efficiency, and advanced technologies to enhance any sound system.

One of the standout features of the KAC-726 is its robust power output. Delivering a maximum power of 500 watts, this amplifier ensures that your audio experiences are not just loud, but also vibrant and dynamic. It boasts a continuous power output of 75 watts per channel at 4 ohms, making it suitable for driving multiple speakers with ease. This versatility allows users to customize their audio setup, whether it be for personal enjoyment or competitive sound quality.

The KAC-726 incorporates a Class D amplifier technology, which is known for its compact design and energy efficiency. This technology minimizes heat generation and power consumption while maximizing output power. As a result, the KAC-726 is not only compact and lightweight, but it also extends the lifespan of the unit and the connected speakers.

Additionally, the KAC-726 comes equipped with a built-in low-pass filter, allowing users to adjust the crossover frequency. This feature is essential for tailoring sound to the specific needs of different speakers, ensuring that each component of the system produces optimal sound quality. The variable low-pass filter can be adjusted from 50Hz to 200Hz, making it a versatile choice for various audio configurations.

The amplifier also includes built-in protection features, such as thermal protection and short circuit protection, safeguarding both the amplifier and speakers from potential damage during operation. This reliability is crucial for users who demand performance without compromising safety.

In terms of connectivity, the KAC-726 features easy-to-use terminal connections that facilitate straightforward installation. The amplifier is compatible with various audio sources, making it an ideal choice for enhancing factory systems or aftermarket setups.

Overall, the Kenwood KAC-726 is a powerful amplifier that marries modern technology with user-friendly features. Its combination of high power output, efficient Class D architecture, customizable filtering options, and built-in protection systems makes it an exceptional choice for audiophiles and casual listeners alike. Whether enhancing the audio experience in a car or a home setup, the KAC-726 stands out as a reliable and effective solution.
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