JVC SX-L77 User manual

LVT1283-002A
[U]
SX-L77
SPEAKER SYSTEM
INSTRUCTIONS
English
cover_SX-L77[U]2.p65 05.1.20, 10:59 AM3

2
English
Preparation
7Checking the supplied accessories
•Speaker grille (1)
If any item is missing, contact your dealer immediately.
7Adjusting the feet
If the speaker is unstable, adjust each foot until it stands stably.
•To avoid personal injury, and physical damage both to the
speaker and to the floor be careful not to drop the speaker on
your feet.
•Have two persons to adjust the feet to avoid falling off the
speaker.
•Do not touch the speaker units while adjusting the feet.
•When installing the speaker on the floor, be careful not to
place it over your hands.
7About speaker grille
To attach the speaker grille, put the projections of the speaker
into the holes of the speaker grille.
•Do not press the speaker grille strongly.
To remove the speaker grille, insert your fingers at the bottom
of the speaker grille, then pull upward.
38.0 kg
Feet
Thank you for purchasing a JVC speaker.
Before you begin using it, please read the instructions carefully
to be sure you get the best possible performance. If you have any
questions, consult your JVC dealer.
Warnings, Cautions and Others
7Precautions for installation
•To avoid personal injury or accidentally
dropping the unit, have two persons unpack,
carry, and install the unit.
•Do not install the speakers on an uneven
surface or in a place subject to vibration;
otherwise, they may fall over, causing damage or injury.
–Take the occurrence of earthquakes or other physical
shocks into consideration when selecting the installation
place, and secure the speakers thoroughly.
•To prevent deformation or discoloration of the cabinet, do not
install the speakers where they are exposed to direct sunlight
or high humidity, and avoid installation near air conditioning
outlets.
•Speaker vibrations may cause howling. Place the speakers as
far away from the player as possible.
•The speakers are magnetically shielded to avoid color
distortions on TVs. However, if not installed properly, it may
cause color distortions. So, pay attention to the following when
installing the speakers.
– When placing the speakers near a TV set, turn off the TV’s
main power switch or unplug it before installing the
speakers.
Then wait at least 30 minutes before turning on the TV’s
main power switch again.
Some TVs may still be affected even though you have followed
the above. If this happens, move the speakers further away
from the TV.
•Tuner reception may become noisy or hissing if a speaker is
installed near the tuner. In this case, leave more distance
between the tuner and the speakers or use an outdoor
antenna for better tuner reception without interference from
the speakers.
•Do not lean against the speakers, as the speakers could fall
down or break, possibly causing an injury. Especially be
careful that children do not lean against them.
7Precautions for daily use
•To maintain the appearance of the speakers
–Wipe with a dry, soft cloth if the cabinet should become
dirty.
If very dirty, wipe with a cloth applied a small amount of
water or neutral detergent, then wipe with a dry cloth.
–Do not use chemicals such as benzine and thinner for
cleaning the cabinet.
•To improve the sound field
–It is recommended to leave a space of more than 50 cm
between the speakers and the wall.
–If the speakers are facing a solid wall or glass door, etc., it is
recommended to furnish the wall with materials that absorb
sounds, for example by hanging up thick curtains, to prevent
reflections and standing waves.
•To use the speakers without any trouble
–Do not reproduce sounds at so high a volume that they are
distorted; otherwise, the speakers may be damaged by
internal heat buildup.
–When moving the speakers, do not pull the speaker cords;
otherwise, the speakers may fall over, causing damage or
injury.
Holes
Holes
Projections
Back of the speaker grille
The larger part should be
upper on the grille.
EN_SX-L77[U]2.p65 05.1.27, 2:04 PM2

3
English
7Conventional connection
1 Loosen the knobs of the “FULL RANGE” terminals.
2 Fit the speaker cords into the grooves of the “FULL
RANGE” terminals, then tighten the knobs to secure the
speaker cords and short-circuit plates.
7Bi-wiring connection
This speaker is bi-wireable. Comparing with the conventional
connection, the bi-wiring connection makes the sound field
larger, deeper, and richer.
1 Loosen all speaker terminal knobs and detach the
short-circuit plates.
2 Connect the “FULL RANGE” terminals and “LOW
FREQUENCY” terminals separately to the speaker
terminals of the amplifier.
Connection
Short-circuit plates
SPEAKERS
RIGHT LEFT
LOWFREQUENCY
(WOOFERONLY)
LOWFREQUENCY
(WOOFERONLY)
Short-circuit
plates
FULL RANGE terminals
(Black)
(Red)
(Red)
SPEAKERS
RIGHT LEFT
LOWFREQUENCY
(WOOFERONLY)
HIGHFREQUENCY
LOWFREQUENCY
(WOOFERONLY)
HIGHFREQUENCY
Speaker cord
(not supplied)
LOW FREQUENCY terminals FULL RANGE terminals
Speaker cord
(not supplied)
7Connecting the speaker system to the amplifier
Before connecting:
•Make sure to match the polarity (ªand ·) when connecting
the speaker cords.
•Turn off the power to the amplifier before connecting the
speaker system; otherwise, the speakers may be damaged.
•The impedance of each speaker is 6 Ω.
If this does not match with the speaker impedance range
indicated on the amplifier, you cannot connect this system to
the amplifier.
•The maximum power handling capacity of the SX-L77 is
180 W. Excessive input will result in abnormal noise and
possible damage.
•Be sure to turn down the volume level on the amplifier to
prevent unwanted noise before performing following
operations:
–Turning on or off other components
–Operating the amplifier
–Tuning FM stations
–Fast-forwarding a tape
–Continuously reproducing high frequency oscillation or high
pitch electronic sounds
–Connecting or disconnecting a microphone
•When using a microphone, do not aim it at the speakers or
use it near the speakers; otherwise, the howling which occurs
may damage the speakers.
•Before replacing the cartridge, always turn off the power both
to the amplifier and to the turntable; otherwise, the clicking
noise may damage the speakers.
•Use speaker cords as follows;
–Buy thick speaker cords rather than thin cords, and make
them as short as possible for connection.
–Use speaker cords of the same length for both left and right
speakers.
– Do not use long speaker cords; otherwise, the sound quality
may deteriorate.
–Using a special speaker cord such as a litz wire, a coaxial
cable, or a cord which has the specified connecting
directionality may influence the sound quality.
7Connecting the speaker cord
Connect the “INPUT” terminal of the speaker to the speaker
terminal of the amplifier.
Rotate the speaker terminal
knob counterclockwise and fit
the speaker cord into the
groove. Then rotate the knob
clockwise to secure the cord.
• Make sure to match the polarity (ªand ·); otherwise, the
surround effect will become less effective.
EN_SX-L77[U]2.p65 05.1.27, 2:04 PM3

4
English
Specifications
Type: 3-way 3-speaker bass-reflex type
Magnetically-shielded type
Speaker unit:
Woofer: 17.5 cm cone
Mid and low range: 17.5 cm cone
Tweeter: 2.5 cm dome
Power handling Capacity: 180 W
Impedance: 6 Ω
Crossover frequency: 170 Hz, 3 000 Hz
Frequency range: 28 Hz to 70 000 Hz
Sound pressure level: 89 dB/W•m
Dimensions (W x H x D): 253 mm x 1 077 mm x 387 mm
Mass: 38.0 kg
Design and specifications subject to change without notice.
EN_SX-L77[U]2.p65 05.1.27, 2:04 PM4

5
使用注意事項
7檢查附件
•揚聲器罩網（1)
如果有任何項目遺漏，請速與經銷商聯絡。
7調節支腳
如果揚聲器不穩定，調節每箇支腳直到揚聲器站穩為止。
•為避免人員受傷，揚聲器和地板受到外部損傷，注意不要摔落
揚聲器砸到腳。
•由兩個人調節支腳以避免摔落揚聲器。
•調節支腳時請勿碰觸揚聲器裝置。
•地板上安裝揚聲器時，注意不要被支腳夾到手。
7關于揚聲器罩網
要裝上揚聲器罩網時，將揚聲器上的插銷插到揚聲器罩網上的插
孔里。
•切勿過度用力推插揚聲器罩網。
要卸下揚聲器罩網時，將手指插入揚聲器罩網底部，然后朝前
拉。
38.0 kg
支腳
感謝您惠購 JVC 揚聲器。
在開始使用之前，請您仔細閱讀本使用說明書，以確保您獲得揚
聲器的最佳性能。若有疑問，請與 JVC 代理銷售商聯系。
警告，注意及其他
7安裝時的注意事項
•為了防止人員受傷或意外跌損機器，在拆開
包裝，搬運和安裝本機時需要由兩個人來完
成。
•切勿將揚聲器放置在凹凸不平處或受到震動
處。否則揚聲器摔落可能導致自身損壞或損
傷他物。
–在選擇安裝場所時，須事先考慮到可能會發生地震或其他物
理性衝擊等情況，確保揚聲器安裝牢靠。
•為防止機殼變形或變色，勿將揚聲器安裝在受到陽光直射或高
度潮溼處，亦避免安裝在空調器的排氣孔附近。
•揚聲器的振動可能產生顫噪。應盡量將揚聲器遠離唱機放置。
•盡管揚聲器具有磁性屏蔽性能可以避免造成電視機色彩失真，
但如果安裝不當仍然可能引起電視機色彩失真。因此在安裝揚
聲器時請注意以下事項。
–如果欲將揚聲器安裝在電視機附近，在安裝揚聲器之前請先
關閉電視機的主電源開關或拔下電源插頭。
在重新啟動電視機的主電源之前至少要等待 30 分鐘。
盡管您已經按照上述方法去做，有些電視機仍然會受到影響。
發生此種情況時，須將揚聲器移到遠離電視機處進行安裝。
•如果將揚聲器安裝在調諧器附近，在調諧器接收時可能出現噪
音或嘶嘶聲。發生此種情況時，須將調諧器與揚聲器之間多空
出一些距離，或者使用室外天線，這樣調諧器便不會受到揚聲
器的干擾，而獲得較好的接收效果。
•切勿倚靠在揚聲器上，因為揚聲器可能摔倒或摔壞，而且可能
砸傷人。特別注意不要讓兒童倚靠在揚聲器上。
7日常使用時的注意事項
•保養揚聲器的外表
–如果機殼髒污，可用干爽柔軟的布進行擦拭。
如果髒污嚴重，可在布上沾少量的水或中性洗滌劑擦去污
物，然后再用干布擦拭。
–切勿使用苯及稀釋劑等化學溶劑清潔機殼。
•改良音場
–建議在揚聲器與牆壁之間留出 50 cm 以上的間隔。
–如果揚聲器面對固質材料的牆壁或玻璃門等設施，建議您使
用吸音性材料，如厚料窗簾來裝飾牆壁，這樣便可以防止發
生反射波和駐波。
•常規使用揚聲器
–勿在極高，乃至出現聲音失真的音量下播放音響，否則揚聲
器內部熱量積聚可能損壞揚聲器。
–在移動揚聲器時勿拉扯揚聲器導線；否則揚聲器摔落可能導
致自身損壞或損傷他物。
插孔
插孔
插銷
揚聲器罩網后部
罩網較大的一面應朝上。

6
7普通連接
1鬆開“FULL RANGE”端子上的旋鈕。
2 將揚聲器導線放到“FULL RANGE”端子的線槽內。然后旋轉
旋鈕固定揚聲器導線和短路板。
7雙線連接
本揚聲器可以進行雙線連接。與普通連接法相比，雙線連接法可
使音場更大，更深，更飽滿。
1 鬆開所有揚聲器端子上的旋鈕並卸下短路板。
2 分別將“FULL RANGE”端子和“LOW FREQUENCY”端子
連接到功率放大器的揚聲器端子上。
連接
短路板
SPEAKERS
RIGHT LEFT
LOWFREQUENCY
(WOOFERONLY)
LOWFREQUENCY
(WOOFERONLY)
短路板
FULL RANGE 端子
SPEAKERS
RIGHT LEFT
LOWFREQUENCY
(WOOFERONLY)
HIGHFREQUENCY
LOWFREQUENCY
(WOOFERONLY)
HIGHFREQUENCY
揚聲器導線
（另購）
LOW FREQUENCY 端子 FULL RANGE 端子
揚聲器導線
（另購）
7將揚聲器系統連接到功率放大器上
進行連接之前：
•在連接揚聲器導線時確保對準極性（ª和·）。
•在連接揚聲器系統之前，首先關閉功率放大器的電源，否則可
能損壞揚聲器。
•每只揚聲器的阻抗為 6 Ω。
如果揚聲器的阻抗與功率放大器上標出的阻抗範圍不一樣，便
不要將其連接到功率放大器上。
• SX-L77 的最大額定功率為 180 W。超過該值以上的信號傳入
時該機將產生異常噪音並可能受到損壞。
•在執行下列操作之前確保調低功率放大器的音量水平，以防止
出現異常噪音：
–啟動或關閉其他組件
–操作功率放大器
–調收 FM 電臺
–快速前進倒帶
–連續播放高頻振幅或高調電子音
–連接或拔下麥克風
•在使用麥克風時，不要將其朝向揚聲器，也不要在揚聲器附近
使用，否則顫噪可能會損壞揚聲器。
•在更換唱頭之前，請務必將接至功率放大器和接至唱機的電源
均關掉，否則喀噪音可能會損壞揚聲器。
•請按如下規定使用揚聲器導線；
–購買揚聲器導線時盡量買粗的而不要買細的，而且接線盡量
要短。
–對左置和右置揚聲器使用相同長度的揚聲器導線。
–不要使用過長的揚聲器導線，否則音響質量會降低。
–使用特殊的揚聲器導線，如辮線，同軸電纜或帶有特定的連
接定向性的導線可能會影響音響質量。
7連接揚聲器導線
將揚聲器的“INPUT”端子連接到功率放大器的揚聲器端子上。
逆時針方向旋轉揚聲器端子上
的旋鈕，將揚聲器導線放到線
槽內。然后順時針方向旋轉旋
鈕以固定導線。
• 確保對準極性（ª和·）；否則，環繞聲效果將會丟失。
（黑）
（紅）
（紅）

7
規格
類型： 3 向 3 揚聲器低音反射型
磁性屏蔽型
揚聲器裝置：
低音揚聲器： 17.5 cm 圓錐型
中低音揚聲器： 17.5 cm 圓錐型
高音揚聲器： 2.5 cm 圓頂型
額定功率： 180 W
阻抗： 6 Ω
分解頻率： 170 Hz，3 000 Hz
頻率範圍： 28 Hz 至70 000 Hz
聲壓水平： 89 dB/W•m
尺寸（寬 x 高x 深）： 253 mm x 1 077 mm x 387 mm
重量： 38.0 kg
設計及規格如有變更恕不另行通知。

EN, CS
0105NSMMDWSAN© 2005 Victor Company of Japan, Limited
SX-L77 SPEAKER SYSTEM
cover_SX-L77[U]2.p65 05.1.20, 10:59 AM2