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Legacy Bose Lifestyle 12 with LG 55LM4600 HDTV

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Old 03-01-2014, 05:39 AM   #16  
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If I may...

A stereo signal is just two channels. It can be expanded to 5.1 by applying a surround mode such as ProLogic or DTS Neo:6 or a host of others. How does that happen? Most sound systems have settings where the end user can apply specific surround modes. Or, the arriving signal may have a flag that tells the sound system to turn on a specific surround mode.

I am not familiar with old Bose systems. But, I would start by looking through the manual to see if there is a way to manually engage surround processing. (There is a way. See the EDIT note below. I deleted the rest of my post after reading the Bose manual. Always a good place to start.)

EDIT: I believe this has nothing to do with Cisco box. Rather, it is about applying the right surround mode on the Bose. The manual for the Bose Lifestyle12 describes how to switch from stereo to 3 speaker to 5 speaker outputs. From your initial post, it looks like you are using the 3 speaker setting with the Cisco input. (Stereo + Center)

http://products.bose.com/pdf/custome...og_ls12_s1.pdf

Look at pages 14 and 19.

Last edited by BIslander; 03-01-2014 at 06:21 AM..
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Old 03-01-2014, 11:37 AM   #17  
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Nice post & Link Thx

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Old 03-02-2014, 04:44 AM   #18  
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If I may chime in here...

If the above advice doesn't work (I think it should, though) you might try using the optical output from the TV itself - running through a Digital Optical Coaxial Toslink to Analog RCA Audio Converter if there is no composite audio (2 channel RCA) output on the TV.
I have a vintage Kenwood receiver (KR9600) which works well. I use this converter to connect my HDTV to this receiver and 4 speakers, and although it's not surround sound, I can literally shake the foundations watching a concert video.
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Old 03-02-2014, 10:36 AM   #19  
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Quote:
Originally Posted by Steelersfan View Post
If I may chime in here...

If the above advice doesn't work (I think it should, though) you might try using the optical output from the TV itself - running through a Digital Optical Coaxial Toslink to Analog RCA Audio Converter if there is no composite audio (2 channel RCA) output on the TV.
I have a vintage Kenwood receiver (KR9600) which works well. I use this converter to connect my HDTV to this receiver and 4 speakers, and although it's not surround sound, I can literally shake the foundations watching a concert video.
Yep, like the one he found in post #12.
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Old 03-02-2014, 12:32 PM   #20  
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I am curious as to what digital to analog converters like the ones mentioned in this thread would do to address the OP's problem of only getting sound from his three front speakers and nothing from the surrounds. Or, why routing the audio through the TV would help.
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Old 03-02-2014, 01:53 PM   #21  
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Quote:
Originally Posted by BIslander View Post
I am curious as to what digital to analog converters like the ones mentioned in this thread would do to address the OP's problem of only getting sound from his three front speakers and nothing from the surrounds. Or, why routing the audio through the TV would help.
The Bose surround decoder is really a quite high quality unit as it should be for the price they got for the Lifestyle 12 systems. When there is a mono signal presented to the Bose the surround channels will be completely dead, unlike a lot of other Prologic decoders that will still have some leakage to the surround. Also the Bose does not have a synthesized stereo setting that would allow sound from all channels like a lot of other surround receivers do. I suspect that somehow when hooked to the Cisco box he was getting a mono signal only. So assuming he has hooked up the cable box with a HDMI cable the TV should output a stereo signal which will allow for prologic surround.
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Old 03-02-2014, 03:33 PM   #22  
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The original post says he is getting sound from the L/R/C when hooked up to the Cisco box. Besides, I don't ever recall hearing about a set top box sending mono instead of stereo over the analog stereo outputs.
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Old 03-02-2014, 04:02 PM   #23  
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Quote:
Originally Posted by rbinck View Post
Yep, like the one he found in post #12.
Yes, it's like that one, but I only paid $13 or $14 for mine as opposed to $44.95. I also use a converter to convert my VCR audio and video signal to HDMI that cost about $44. I saw the price mentioned earlier but didn't click on the link in #12. My bad. Assuming the signal from the JVC TV is 2 channel and seems to work, that is why I mentioned the audio converter.
With that said, so sorry for trying to be helpful, it will not happen again.
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Old 03-02-2014, 07:14 PM   #24  
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Quote:
Originally Posted by Steelersfan View Post
Yes, it's like that one, but I only paid $13 or $14 for mine as opposed to $44.95. I also use a converter to convert my VCR audio and video signal to HDMI that cost about $44. I saw the price mentioned earlier but didn't click on the link in #12. My bad. Assuming the signal from the JVC TV is 2 channel and seems to work, that is why I mentioned the audio converter.
With that said, so sorry for trying to be helpful, it will not happen again.
I was not trying to gig you, I was reinforcing the one the OP found as one that would work. Sorry if it came out wrong.
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Old 03-15-2014, 02:06 PM   #25  
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Quote:
Originally Posted by BIslander View Post
If I may...

A stereo signal is just two channels. It can be expanded to 5.1 by applying a surround mode such as ProLogic or DTS Neo:6 or a host of others. How does that happen? Most sound systems have settings where the end user can apply specific surround modes. Or, the arriving signal may have a flag that tells the sound system to turn on a specific surround mode.

I am not familiar with old Bose systems. But, I would start by looking through the manual to see if there is a way to manually engage surround processing. (There is a way. See the EDIT note below. I deleted the rest of my post after reading the Bose manual. Always a good place to start.)

EDIT: I believe this has nothing to do with Cisco box. Rather, it is about applying the right surround mode on the Bose. The manual for the Bose Lifestyle12 describes how to switch from stereo to 3 speaker to 5 speaker outputs. From your initial post, it looks like you are using the 3 speaker setting with the Cisco input. (Stereo + Center)

http://products.bose.com/pdf/custome...og_ls12_s1.pdf

Look at pages 14 and 19.
I tried all that before I posted - no luck.
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Old 03-15-2014, 02:20 PM   #26  
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Default UPDATE from OP = Problem solved

I ended up buying the Orei DA34 digital to analog converter from Amazon. When I ran the optical TOSLINK out of the TV, to the little converter, and then to the Bose, the result was the same as before. Only sound was from the FL, Center, FR, and acoustimass. There was absolutely nothing from the rear surround sound speakers.

However, when I ran the optical TOSLINK out of the CISCO cable box, to the little OREI converter, and then to the BOSE - SUCCESS! I now have sound from all speakers, including rear surrounds. And it sounds as good as ever.

Obviously, the signal I need is sanitized or lost going out of the CISCO to the LG HDTV (via HDMI no less) and then out to the BOSE. I tried every combination of device settings for audio in both the CISCO and the LG TV - it made no difference. Only when I ran audio DIRECT from the CISCO to the BOSE (via the OREI converter), bypassing the TV, do I get the rear surround

Below is the link to the device.

http://www.amazon.com/dp/B008EPW7O0/..._26725410_item

Unfortunately, an unrelated problem with the Bose CD player cropped up shortly after, but the audio from the cablebox is working great.

Thanks to all of you for your help on this.
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Last edited by blmqzjc; 03-15-2014 at 02:41 PM..
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Old 03-15-2014, 10:13 PM   #27  
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Are you using the same input on your Bose for all of these connections?
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Old 03-16-2014, 05:41 AM   #28  
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Originally Posted by BIslander View Post
Are you using the same input on your Bose for all of these connections?
Yes, I use the VIDEO input, which is what the manual recommends. I could probably use any of them, and select the appropriate one from the remote or music center deck. In fact, I tried all of them before I posted here. All inputs are red/white RCA.
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Old 03-16-2014, 08:16 AM   #29  
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Interesting. The TV must have converted the audio to mono instead of stereo. Glad to hear you got it working.
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Old 03-16-2014, 09:45 AM   #30  
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Quote:
Originally Posted by blmqzjc View Post
Yes, I use the VIDEO input, which is what the manual recommends. I could probably use any of them, and select the appropriate one from the remote or music center deck. In fact, I tried all of them before I posted here. All inputs are red/white RCA.
I am glad you found something that works. But, I remain unaware of anything that your TV could be doing to the signal that would prevent the settings of the Bose from working, especially since you say you are getting L/R/C sound through the TV, just nothing from the surrounds. I have never heard of a TV or a set top box that outputs a 3 channel signal. Or does mono, for that matter.

Just because i am curious... What are the audio output settings of the Cisco box and the LG TV where you cannot get sound from the surround speakers? And, what is format of the source audio on the Cisco box - DD 5.1 or stereo PCM?

Last edited by BIslander; 03-16-2014 at 10:38 AM..
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