Panasonic SB-AK450PL Manuel utilisateur

Type 3 way, 3 speaker system (Bass reflex)

Speaker(s)

Woofer 16 cm cone type

Tweeter 6 cm cone type

Super tweeter Piezo type

Impedance

HIGH 3 Ω

LOW 3Ω

Input power (IEC)

HIGH 115 W (Max)

LOW 115 W (Max)

Output sound pressure level 88 dB/W (1.0 m)

1 System Combination 3

1.1. System Breakdown 3

2 Assembling and Disassembling 4

2.1. Caution 4

2.2. Disassembly Procedures 4

2.3. Disassembly Flow Chart 4

2.4. Disassembly of Rear cabinet assembly 5

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SB-AK450PL

Colour

(K)...Black Type

Cross over frequency 1.5kHz,10kHz

Frequency range 35 Hz to 24 kHz (-16 dB)

41 Hz to 27 kHz (-10 dB)

Dimensions (W X H X D) 232 X 373 X 226 mm

Mass 3.4 kg

Notes:

1. Specifications are subject to change without notice. Mass and

dimensions are approximate.

2. Total harmonic distortion is measured by the digital spectrum

analyzer.

3. The labels “HIGH” and “LOW” on the rear of the speakers refer to

High frequency and Low frequency.

2.5. Disassembly of Woofer 6

2.6. Disassembly of Tweeter 6

2.7. Disassembly of Piezo 7

3 Connection of the Speaker Cables 8

4 Connection of the Wiring Diagram 9

5 Exploded Views 11

5.1. Cabinet Parts Location 11

Speaker System

Specifications

CONTENTS

Page Page

ORDER NO. MD0703008CE

5.2. Packaging 12 6 Replacement Parts List 13

SB-AK450PL

1 System Combination

1.1. System Breakdown

Note:

The table below show the breakdown for speaker combinations used in main unit system.

System SC-AK450PL-K

Music Center SA-AK450PL-K

Front Speakers SB-AK450PL-K

System SC-AK450GCP-K

Music Center SA-AK450GCP-K

Front Speakers SB-AK450PL-K

SB-AK450PL

2 Assembling and Disassembling

2.1. Caution

“Attention Servicer”

Some chassis components may have sharp edges.

Be careful when disassembly and servicing.

1. This section describes procedure for checking the operation of replacing the main components.

2. For reassembly after operation checks or replacement, reverse the respective procedures.

3. Select items from the following index when checks or replacement are required.

4. Refer to the Part No.on the page of “Parts Location and Replacement Parts List” (Section 6) if necessary.

2.2. Disassembly Procedures

Disassembly of Rear cabinet assembly

Disassembly of Woofer

Disassembly of Tweeter

Disassembly of Piezo

2.3. Disassembly Flow Chart

The following chart is the procedure for disassembly the casing and inside parts for internal inspection when carrying out the

servicing.

To assemble the unit, reverse the steps shown in the chart as below.

SB-AK450PL

2.4. Disassembly of Rear cabinet

assembly

Step 1: Remove 4 screws from front panel.

Step 2: Insert flathead screwdriver into the grooves to push the

front panel as arrow shown.

Step 3: Detach the front panel as arrow shown.

Step 4: Detach the (+) red and (-) black wires from woofer.

SB-AK450PL

Step 5: Detach the (+) gray and (-) blue wires from tweeter.

Step 6: Remove the rear cabinet assembly.

2.5. Disassembly of Woofer

Follow the (step 1) to (step 4) in item 2.4.

Step 1: Remove 4 screws from woofer.

Step 2: Remove the woofer.

2.6. Disassembly of Tweeter

Follow the (step 1) to (step 3) in item 2.4.

Step 1: Detach the (+) red and (-) black wires from tweeter.

Step 2: Remove 4 screws from tweeter.

Step 3: Remove the tweeter.

SB-AK450PL

2.7. Disassembly of Piezo

Follow the (step 1) to (step 3) in item 2.4.

Follow the (step 1) in item 2.6.

Step 1: Remove the glue from piezo.

Step 2: Remove the piezo.

For assembly of piezo, follow the steps below:

1. Clear up areas on the piezo.

2. Apply glue to piezo and paste to the front panel.

SB-AK450PL

Be sure to connect speaker cables before connecting the

AC power supply cord.

The load impedance of any speaker used with this unit must

be 3 Ω.

Be sure to connect the cable from the right speaker to the

right terminal and the cable from the left speaker to the left

terminal.

Placement

Speakers are designed identically so that no left or right

channel orientation is necessary.

Connection

Use only the supplied speakers.

The combination of the main unit and speakers provide the

best sound. Using other speakers can damage the unit and

sound quality will be negatively affected.

Notes:

Keep your speakers at least 10mm away from the system

for proper ventilation.

These speakers do not have magnetic shielding. Do not

place them near televisions, personal computers or other

devices easily influenced by magnetism.

You can damage your speakers and shorten their useful life

if you play sound at high levels over extended periods.

Reduce the volume in the following cases to avoid damage.

−

− −

− When playing distorted sound.

−

− −

− When adjusting the sound quality.

3 Connection of the Speaker Cables

SB-AK450PL

4 Connection of the Wiring Diagram

SB-AK450PL

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