James207 Posted January 26, 2021 Share Posted January 26, 2021 Hi all, I purchase a cinema 400 about a week ago. I get the solid blue light on the back of the sub but no sound. It says its paired but doesn't act like it. I've checked volume settings and everything else and went over the directions a dozen times. I've tried factory reset...nothing, no sound. It's hooked up to a brand new LG 55" Smart TV via ARC HDMI...The sound bar works good. This appears to be a problem with these Klipsch sound bar sub woofers, however, I cant find a fix that will work anywhere. What is the most common problem with this no sound from the sub issue? Any help would be greatly appreciated at this point. I had high hopes for this product... Thank you, James Quote Link to comment Share on other sites More sharing options...
wuzzzer Posted January 26, 2021 Share Posted January 26, 2021 Have you tried the optical input? HDMI ARC is known to have a lot of issues. Quote Link to comment Share on other sites More sharing options...
James207 Posted January 27, 2021 Author Share Posted January 27, 2021 16 hours ago, wuzzzer said: Have you tried the optical input? HDMI ARC is known to have a lot of issues. No, I haven't. Though, It did cross my mind . I didn't think it would affect connectivity to the sub woofer if the bar was working...At this point I'll try anything that may help. I'll give it a shot. Thank you. Quote Link to comment Share on other sites More sharing options...
Gabe NYC Posted July 24, 2021 Share Posted July 24, 2021 James, did you ever get a fix for this issue? I am having a similar problem where I get the orange/yellow input light with HDMI and the soundbar itself works fine but the Subwoofer doesn't play. I do not have the same issue using bluetooth as another input. Quote Link to comment Share on other sites More sharing options...
John4becca Posted August 15, 2022 Share Posted August 15, 2022 I have the cinema 400 My subwoofer cuts in and out and makes crackling sound when watching television works fine with movies I normally turn it off and back on but lately it doesn’t solve the issues Quote Link to comment Share on other sites More sharing options...
John4becca Posted August 15, 2022 Share Posted August 15, 2022 I used the provided hdmi cord and have tried a optical cord Quote Link to comment Share on other sites More sharing options...
dorydory Posted August 22, 2022 Share Posted August 22, 2022 HDMI ARC is known to have a lot of issues. Have you tried the optical input? Quote Link to comment Share on other sites More sharing options...
AK1 Posted January 10 Share Posted January 10 On 8/22/2022 at 12:46 AM, dorydory said: HDMI ARC is known to have a lot of issues. Have you tried the optical input? Is this an HDMI ARC issue? No other way to solve this problem? Optical is not an option for me Quote Link to comment Share on other sites More sharing options...
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