JBL SCS 178 User Manual (English)

Questions and Answers:

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Javier RobinsonJul 30, 2025
How to fix no sound from one JBL SCS 178 speaker?
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  Lonnie ThomasJul 31, 2025
  If you're not getting sound from one of your JBL Speaker System speakers, there are a few things you can check. First, make sure to check the “Balance” control on your receiver/amplifier. Second, ensure all the speaker connections are correct. Finally, confirm that the movie or TV show you are watching is recorded in a surround-sound mode, and that your receiver/processor is configured so that the main surround speakers are enabled in Dolby Digital or DTS modes.
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lisa88Aug 6, 2025
What to do if there is no sound from center JBL SCS 178 speaker?
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  Sharon HuberAug 7, 2025
  If you're experiencing a lack of sound from the center speaker of your JBL Speaker System, begin by inspecting all wires and connections between the receiver/amplifier and the center speaker. Also, ensure that your receiver/processor is configured to enable the center speaker.
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Jamie ChanAug 14, 2025
How to enable subwoofer output in Dolby Digital/DTS modes on JBL SCS 178?
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  Kathleen CalhounAug 14, 2025
  To ensure proper subwoofer and LFE output in Dolby Digital or DTS modes on your JBL Speaker System, make sure your receiver/processor is configured so that the subwoofer and LFE output are enabled.
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Katelyn PowellAug 22, 2025
Why is there low output from my JBL Speaker System subwoofer?
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  Darrell KingAug 22, 2025
  If your JBL Speaker System's subwoofer has low or no output, first, ensure that the subwoofer is plugged into an active electrical outlet. Second, make sure the subwoofer's power is switched on.

JBL SCS 178 Specifications

General

Frequency Response	40Hz - 20kHz
Impedance	8 ohms
Speaker System Type	5.1 Channel Home Theater Speaker System
Subwoofer Dimensions	12.2 x 14.2 x 16.5 inches
Weight (Subwoofer)	28.7 lbs