Оценок - 3, средний балл: 3.7
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Фрагмент инструкции
It is,, therefore, possible to adjust the bass sound to some extent by adjusting the speaker’s distance from the wall and /or lloor. • 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 80 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) 15mm 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. 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 foward; acoustic feedback from a microphone or musical instrument; electrical noise from the connection or disconnection of a phono cartridge, or phono / RCA cables. This unit incorporates protection circuitry that automatically reduces the tweeter level when a safe overall input level has been exceeded. When the protection circuit is activated, the sound from thetweeter will be interrupted. If the tweeter sound is interrupted, do not operate the system continuously. The woofer is not affected by the protection circuit, therefore; sound will be heard from the woofer. 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. • The speaker system should not be placed near a TV. The speaker magnet may cause a disturbance in the TV picture. • 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. SB-LV305 Type: 2-way, 2- speaker bass reflex Crossover frequencies : 3 kHz Speakers: Woofer : Midrange : Tweeter : Impedance : Input power: 25 cm (10") cone type None 6.5 cm (2") cone type 8 ohms, nominal 140 W (music) 70 W (DIN) Dimensions : 320 x 600 x 269 mm (WxHxD) (12-19/32" x 23-5/8" x 10-19/32") Output sound pressure level: Frequency range : Weight : Speaker protection: Yes 7.7 kg (171b) 90 dB/W (1.0m) 44 Hz -22 kHz (at 16dB below average level) 52 Hz ~ 20 kHz (at 10dB below average level) Note: Specifications are subject to change without notice. Weight and dimensions are approximate. Matsushita Consumer Electronics Company, Division of Matsushita El...