Panasonic SBAK-450-PL Service manual

Specifications

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 3 Ω

Input power (IEC)

HIGH 115 W (Max)

LOW 115 W (Max)

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

ORDER NO. MD0703008CE

Speaker System

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.

CONTENTS

Page Page

1 System Combination

1.1. System Breakdown

2 Assembling and Disassembling

2.1. Caution

2.2. Disassembly Procedures

2.3. Disassembly Flow Chart

2.4. Disassembly of Rear cabinet assembly

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2.5. Disassembly of Woofer

2.6. Disassembly of Tweeter

2.7. Disassembly of Piezo

3 Connection of the Speaker Cables

4 Connection of the Wiring Diagram

5 Exploded Views

5.1. Cabinet Parts Location

© 2007 Matsushita Electric Industrial Co. Ltd.. All
rights reserved. Unauthorized copying and
distribution is a violation of law.

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SB-AK450PL

5.2. Packaging 12 6 Replacement Parts List 13

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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

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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 Replac ement 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.

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