Panasonic SB-HW750P User manual

Type 1 way, 1 speaker system (Bass reflex)
Speaker unit(s) Impedance 6 Ω
Subwoofer 16 cm (6-1/2”) cone type
Input power (IEC) 250 W (Max)
Output sound pressure 82 dB/W (1.0 m)
Frequency range 29 Hz - 220 Hz (-16 dB)
36 Hz - 180 Hz (-10 dB)
Dimensions (W x H x D) 178mm x 425mm x 257 mm
1 System Combination 2
1.1. System Breakdown 2
1.2. Packaging Information 2
2 Assembling and Disassembling 3
2.1. Disassembly flow chart 3
2.2. Disassembly of Net frame assembly 4
©2007 Matsushita Electric Industrial Co. Ltd.. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
SB-HW750P
Colour
(K)... Black Type
(S)... Silver Type
(7” x 16-23/32” x 10-1/8”)
Mass 4kg(8.8lbs)
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.
2.3. Disassembly of Woofer 4
3 Connection of the Speaker Cables 5
4 Connection of the Wiring Diagram 8
5 Exploded view 9
5.1. Cabinet Parts Location 9
6 Replacement Parts List 11
Speaker System
Specification
CONTENTS
Page Page
ORDER NO. MD0702009CE
A6

1 System Combination
1.1. System Breakdown
Note :
The diagrams below show the breakdown for speaker combinations used in main unit systems.
SB-PT750P-K consists of SB-HF750P-K (x2), SB-HS750P-K (x2), SB-HC750P-K (x1) & SB-HW750P-K (x1)
SB-PT650P-S consists of SB-HF650P-S (x2), SB-HS650P-S (X2), SB-HC750P-S (x 1) & SB-HW750P-S (x1)
1.2. Packaging Information
Note :
Please refer to service manual of SB-HF750P-K (MD0702006CE) and SB-HF650P-S (MD0702014CE) to understand the
packaging condition for SB-HW750P-K and SB-HW750P-S.
2
SB-HW750P

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 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.
3
SB-HW750P

2.2. Disassembly of Net frame
assembly
Step 1: Insert a flathead screwdriver above cloth at the grooves
of the net frame assembly.
Step 2: Apply light force along the bosses to push up the net
frame assembly.
2.3. Disassembly of Woofer
Follow (step 1) to (step 2) in item 2.2.
Step 1: Remove 4 screws.
Step 2: Detach the blue (-) and white (+) wires.
4
SB-HW750P

3 Connection of the Speaker Cables
· 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 (white) wires to positive (+) terminals and negative (blue) wires to negative (-) terminals.
5
SB-HW750P

Positioning the speakers
6
SB-HW750P

Note on speaker use
· Use only supplied speakers.
Using other speakers can damage the unit, and sound quality will be negatively affected.
· 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 the speakers are reverberating due to a record player, noise from FM broadcasts, or continuous signals from an
oscillator, test disc, or electronic instrument.
− − −
− When adjusting the sound quality.
− − −
− When turning the unit on or off.
If irregular coloring occurs on your television
The front and center speakers are designed to be used close to a television, but the picture may be affected with some
televisions and setup combinations.
If this occurs, turn the television off for about 30 minutes.
The demagnetizing function of the television should correct the problem.
If it persists, move the speakers further away from the television.
Caution
Do not touch the front netted area of the speakers. Hold by the sides.
e.g. Center speaker
7
SB-HW750P

4 Connection of the Wiring Diagram
8
SB-HW750P

5 Exploded view
5.1. Cabinet Parts Location
SB-HW750P
9

SB-HW750P
10