Panasonic SB-PM54GN Manual de usuario

Type 3 way, 3 speaker system

Speaker (s)

Woofer 10 cm cone type (6 Ω)

Tweeter 6 cm cone type (6 Ω)

Super tweeter 2.5 cm piezo type

Impedance 6Ω

Input power (IEC)

High 90 W (Max)

Low 90 W (Max)

Output sound pressure 80 dB/W (1.0 m)

Crossover frequency 2.2 kHz

Frequency range 45 Hz to 35 kHz (-16 dB)

1 System Combination 3

1.1. System Breakdown 3

2 Assembling and Disassembling 4

2.1. Disassembly flow chart 4

2.2. Disassembly of Net frame assembly 5

2.3. Disassembly of Front Panel 5

2.4. Disassembly of Piezzo ornament 6

2.5. Disassembly of Tweeter 7

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distribution is a violation of law.

SB-PM54GN

Colour

(M)... Wood Type

50 Hz to 31 kHz (-10 dB)

Dimensions (W x H x D) 144 x 249 x 200 mm

Mass 2.0 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 or the speakers refer to

High frequency and Low speakers refer to High frequency and Low

frequency.

2.6. Disassembly of Woofer 8

2.7. Assembly of Speaker Unit 9

3 Connection of the Speaker Cables 10

4 Connection of the Wiring Diagram 11

5 Exploded view 12

5.1. Cabinet Parts Location 12

5.2. Packaging 13

Speaker System

Specification

CONTENTS

Page Page

ORDER NO. MD0702005CE

6 Replacement Parts List 14

SB-PM54GN

1 System Combination

1.1. System Breakdown

Note :

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

System SC-PM54GN-K

Music center SA-PM54GN-K

Speaker system SB-PM54GN-M

SB-PM54GN

2 Assembling and Disassembling

“ATTENTION SERVICER”

Some chassis components may have sharp edges. Be careful when disassembling and servicing.

1. This section describes procedures for checking the operation of the major printed circuit boards and replacing the main

components.

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

Special reassembly procedures are described only when required.

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

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

Below is the list of disassembly sections

Disassembly of Net frame assembly

Disassembly of Front panel

Disassembly of Piezzo ornament

Disassembly of Tweeter

Disassembly of Woofer

2.1. Disassembly flow chart

The following chart is the procedure for disassembling 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-PM54GN

2.2. Disassembly of Net frame

assembly

Note: The disassembly process illustrates left speaker only. For

right speaker, the disassembly process is the same.

Step 1: Remove net frame assembly as arrow shown.

Step 2: Remove 4 net holders.

2.3. Disassembly of Front Panel

Follow (step 1) in item 2.2.

Step 1: Remove 4 screws.

Step 2: Insert a small steel rule into the grooves of the front

panel and lift up to make a gap allowance between the front

panel and rear cabinet as arrow shown.

SB-PM54GN

Step 3: Insert a flathead screwdriver into the groove of the front

panel as shown. Ensure that the screwdriver is above the small

steel rule.

Step 4: At the boss area, push up to open the bosses as arrow

shown.

Caution:

Do not exert strong force as it may damage front panel.

2.4. Disassembly of Piezzo

ornament

Follow (step 1) in item 2.2.

Follow (step 1) to (step 4) in item 2.3.

Step 1: Remove 2 screws.

Step 2: Insert the steel rule in between the piezzo ornament

and rear cabinet as arrow shown.

SB-PM54GN

Step 3: Remove glue from piezzo ornament.

2.5. Disassembly of Tweeter

Follow (step 1) in item 2.2.

Follow (step 1) to (step 4) in item 2.3.

Step 1: Remove 4 screws.

Step 2: Insert the steel rule in between the tweeter and rear

cabinet as arrow shown.

Step 3: Detach the black (+) and black (-) wires.

SB-PM54GN

2.6. Disassembly of Woofer

Follow (step 1) in item 2.2.

Follow (step 1) to (step 4) in item 2.3.

Step 1: Remove 4 screws.

Step 2: Insert the steel rule in between the woofer and rear

cabinet as arrow shown.

Step 3: Detach the red (+) and black (-) wires.

SB-PM54GN

2.7. Assembly of Speaker Unit

Step 1: Scrape off using the scriber and clean up the remaining

glue at the 8 bosses and 8 holes of the front panel and rear

cabinet and replace with new glue.

Step 2: Fix the front panel firmly back to the rear cabinet.

SB-PM54GN

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 6 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.

1. Twist and pull off the vinyl tip of the speaker cords. If the

speaker cords do not have vinyl tips, connect them directly

to the terminals. Make sure the bare ends of the wires are

not unravelled.

2. Insert the wire to the rear panel of the unit and close the

lever.

Notes :

To prevent damage to circuitry, never short-circuit positive

(+) and negative (-) speaker wires.

Be sure to connect only positive (red/gray) wires to positive

(+) terminals and negative (black/blue) wires to negative (-)

terminals.

Placement of speakers

Place the speakers so that the tweeter is on the inside.

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.

Note

Keep your speakers at least 10 mm 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.

To avoid damage to the speakers, do not touch the speaker

cones if you have taken the nets off.

Connection

3 Connection of the Speaker Cables

SB-PM54GN

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