Troubleshooting guide

Often, what appears to be a malfunction is due to user error. Before calling for service, please consult the following table.

Symptom

Cause

Remedy

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 "Controls" and "System examples".

Specifications

Specifications subject to change without notice.

Audio Section

Max

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

70 W ⋅ 4

4

Channel Mode

 

3

Channel Mode

70 W ⋅ 2 + 200 W ⋅ 1

2

Channel Mode

200 W ⋅ 2

Rated Power Output (4 Ω )

 

35 W ⋅ 4 (DIN45324, +B=14.4 V)

4

Channel Mode

3

Channel Mode)

35 W ⋅ 2 (1 kHz, 0.08 % THD) + 100 W ⋅ 1 (1 kHz, 0.8 % THD

2

Channel Mode

100 W ⋅ 2 (1 kHz, 0.8 % THD)

Rated Power Output..........................................................................(2 Ω )

50 W ⋅ 4 (1 kHz, 0.8 % THD)

4

Channel Mode

 

Frequency Response (+0, –1 dB)

5 Hz ~ 50 kHz

Signal to Noise Ratio

100 dB

Sensitivity (MAX) (rated output)

0.15 V

Sensitivity (MIN) (rated output)

4.0 V

Input Impedance

10 kΩ

Low Pass Filter (12 dB/oct.) (Variable)

50 ~ 200 Hz

High Pass Filter (12 dB/oct.) (Variable)

50 ~ 200 Hz

General

Operating Voltage

14.4 V (11 ~ 16 V allowable)

Current Consumption (1 kHz, 10% THD)

28 A

Dimensions (W ⋅ H ⋅ D)

290 ⋅ 52 ⋅ 230 mm

Weight

3.1 kg

9

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Kenwood KAC-746 Troubleshooting guide, Specifications subject to change without notice, Audio Section, General
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KAC-746 specifications

The Kenwood KAC-746 is a powerful and versatile 4-channel car amplifier designed for those who are serious about enhancing their in-car audio experience. With its sleek design and robust performance, this amplifier is an ideal choice for car audio enthusiasts looking to elevate their sound system.

One of the standout features of the Kenwood KAC-746 is its impressive power output. It boasts a maximum power rating of 760 watts, delivering an RMS power of 70 watts per channel at 4 ohms. This ensures that your speakers receive enough power to produce clear and dynamic sound, making your favorite music come alive.

The KAC-746 incorporates advanced technologies for enhanced audio performance. It utilizes a Class AB amplifier architecture, which provides great efficiency while delivering high-quality sound. This class of amplification is known for its ability to produce low distortion levels, ensuring that audio remains faithful to the original recording. This results in a well-balanced audio output with robust bass and crisp highs.

Another significant characteristic of the Kenwood KAC-746 is its extensive compatibility with various audio systems. It features both low-level (RCA) and high-level (speaker wire) inputs, making it easy to connect to any car audio system, regardless of whether it has a built-in amplifier or not. Additionally, the speaker-level inputs allow for seamless integration with factory radio systems, making it an excellent upgrade choice for any vehicle.

The amplifier also features built-in high-pass and low-pass filters, allowing users to customize the audio output to suit their preferences. These filters can enhance sound quality by minimizing distortion caused by unwanted frequencies. This level of customization ensures that the KAC-746 can produce the kind of audio that users desire, whether they prefer booming bass or crystal-clear treble.

Durability is another aspect where the KAC-746 shines. It's designed with a heavy-duty aluminum chassis, which not only contributes to its sleek appearance but also aids in heat dissipation, ensuring reliability even under heavy use.

In conclusion, the Kenwood KAC-746 is an exceptional choice for car audio enthusiasts looking to upgrade their sound system. With its powerful output, advanced Class AB amplification, extensive compatibility, customizable filters, and durable design, it delivers performance that can satisfy even the most demanding audio preferences.
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