SB-LV310 - Loudspeaker TECHNICS - Free user manual and instructions

USER MANUAL SB-LV310 TECHNICS

Operating Instructions

Illustration of a piano with musical notes and an open sheet music, alongside a SB-LV310 speaker and RQTJ0047 device (no text or symbols on main objects)

The model number and serial number of this product can be found on the back of the unit; and the serial number either on the back or the bottom. Please note them in the space provided below and retain this booklet as a permanent record of your purchase to aid identification in the event of theft.

Model number

Serial number

Installation

The sound reproduced by a speaker system is easily influenced by such factors as room acoustics and the system's location in the room. Before finally deciding where the speakers are to be placed, please read the following information carefully.

• The bass sound will be increased if the speakers are placed on the floor or close to a wall due to the reflection of sound. It is, therefore, possible to adjust the bass sound to some extent by adjusting the speaker's distance from the wall and /or floor.
• Undesirable resonance of sound reflection will occur if the speakers face a hard wall or window. Curtains or similar materials can be used to prevent these reflections.
• To prevent possible acoustic feedback, the speaker systems should be kept away from the turntable. This feedback (howling) can result from vibrations from the speakers. The turntable should, therefore, never be placed on the same surface as the speaker system. A thick piece of felt or similar material can be used under the turntable to reduce howling. Closing the turntable's cover also reduces this problem.

Connecting the speaker system

Before connecting the speaker systems to the amplifier, please check the following:

• Be sure to switch OFF the power to the amplifier.
• Use with an amplifier having 8 or below impedance speaker terminals.
• Be sure to only connect positive (+) wires to positive (+) terminals, and negative (—) wires to negative (—) terminals.

Speaker connection cables (not included)

Note:

To prevent damage to circuitry, never short-circuit positive (+) and negative (−) speaker wires.

1. Twist the core of the connection cables.
2. Press the pushbutton, and insert the core until it can no longer be seen.
3. Release the pushbutton, and pull the cable gently to be sure that it is secured.

Placement

These speakers are made so as to be able to be used in close proximity to the TV, but irregular coloring may result due to how the system is placed. If such distortion occurs, turn off the TV for sometime between 15 and 30 minutes. The demagnetizing function of the TV will eliminate the distortion. If the irregular coloring is still visible, then move the speakers further away from the TV. Please note that if there is a magnetic object near the TV, irregular coloring may result due to the interaction between the TV and the speaker.

Power-handling capacity

The power-handling capacity of this unit is indicated in the specifications.

The amplifiers volume control should be set to avoid an excessive input level. This is especially true on amplifiers having an output power rating higher than that of the speaker system.

Even if the amplifier to be used has an output power rating lower than that of the speaker system, the amplifier output may become distorted. This "clipping" distortion creates an excessive input level which can damage the speaker system. This type of distortion also occurs if the input signal to the amplifier is too large.

Bass and treble controls also raise the level of the input signal to the speaker system so care should be taken to adjust the volume to a proper level.

The volume level of the amplifier should be reduced if the following signals are to be applied to the speaker system: interstation noise of the FM radio band; output from a tape deck during rewind or fast forward; acoustic feedback from a microphone or musical instrument; electrical noise from the connection or disconnection of a phono cartridge, or phono / RCA cables.

Speaker components protection

This unit incorporates protection circuitry that automatically reduces the sound when a safe overall input level has been exceeded. When the protection circuit is activated, the sound from the speakers will be interrupted. If the speakers sound is interrupted, do not operate the system continuously.

Proceed as follows:

1. Reduce the volume setting of the amplifier.
2. Check whether or not there is any abnormal condition of the equipment used as the sound source, or of the connections.
3. If there is no abnormal condition, the protection circuitry will be automatically reset in a few minutes.
   After the protection circuit is reset ...
   Do not increase the amplifier's level too high.

Maintenance

Although the enclosure and the speaker units of this speaker system are made of carefully selected materials and have been produced using the finest manufacturing techniques, sudden changes in surrounding temperature and/or humidity should be avoided. Keep this unit away from sources of heat, high humidity and direct sunlight.

• If the enclosure becomes dirty, use a soft, dry cloth to wipe it clean. If the dirt is excessive, soak a soft cloth in a weak solution of soap and water, wring it thoroughly before use. A soft dry cloth should then be used to wipe it dry.
• Never use alcohol, paint thinner, benzine or other volatile chemicals to clean this unit because they may damage the finish, causing it to lose its luster. Also never use a wet or chemically-impregnated cloth.

Specifications

	SB-LV310	SB-LV110
Type	2-way, 2 speakerbass reflex	2-way, 2 speakerbass reflex
Speakers
Woofer	25 cm (10") cone type	17 cm (6-3/4") cone type
Tweeter	6.5 cm (2") cone type	6.5 cm (2") cone type
Impedance	8 ohms, nominal	8 ohms, nominal
Input power	140 W (music)70 W (DIN)	140W (music)70W (DIN)
Output sound pressure level	89 dB/W (1.0m)	88 dB/W (1.0m)
Frequency range	38 Hz ~ 22 kHz (at 16 dB below average level)46 Hz ~ 20 kHz (at 10 dB below average level)	46 Hz ~ 22 kHz (at 16 dB below average level)55 Hz ~ 20 kHz (at 10 dB below average level)
Crossover frequencies	3 kHz	3 kHz
Dimensions(W x H x D)	320 × 600 ×-269 mm(12-19/32" × 23-10/16"× 10-19/32")	236 × 380 × 205 mm(9-9/32" × 14-31/32"× 8-1/16")
Weight	7.7 kg (17 lb)	3.8 kg (8.4 lb)
Speaker protection	Yes	Yes

Note:
Specifications are subject to change without notice. Weight and dimensions are approximate.

Panasonic Consumer Electronics

Company, Division of Matsushita Electric Corporation of America

One Panasonic Way Secaucus, New Jersey 07094

Panasonic Sales Company

Division of Matsushita Electric of Puerto Rico, Inc ("PSC")

San Gabriel Industrial Park, Carolina, Puerto Rico 00985

Panasonic Canada Inc.

5770 Ambler Drive, Mississauga, Ontario L4W 2T3

RQTJ0047

D2307

Technics®

Illustration of a saxophone with musical notes and an open notebook, alongside a speaker labeled SB-LV310 (no text on main objects)