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Technics SU X933 surround connectors |
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#1 |
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Forum Member
Join Date: Jul 2009
Location: Milton Keynes
Posts: 104
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Technics SU X933 surround connectors
Does anyone know what the RCA connectors marked L&R "surround out" next to the speaker terminals connect to?
Do they connect to a second amp for another 2 channels? Or to a surround sound decoder? The output from this connector is not enough to power a speaker. There is a button in the front marked "surround" If you own one I would appreciate your help as I've just been given this amp and speakers but no manual and would love to try out the surround option. |
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#2 |
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Forum Member
Join Date: Jun 2003
Location: Cheshire
Posts: 6,462
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Sometimes phono connectors are used for something other than a line level signal. This is one of those occasions. The sockets are being used for speaker connections. Give it a whirl.
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#3 |
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Forum Member
Join Date: Jul 2009
Location: Milton Keynes
Posts: 104
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Yes I did try to connect a set of 8ohm speakers I had lying around, to the phono sockets, even toggled the surround button in the front but there was no response from the speakers.
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#4 |
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Guest
Join Date: Feb 2008
Posts: 8,103
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They are most likely to be line outs to another amp to run surround speakers. It won't be a 5.1 system as the 933 is only a stereo amp.
Some 5.1 receivers have these so you can upgrade the system to a 7.1 configuration. |
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#5 |
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Forum Member
Join Date: Jun 2003
Location: Cheshire
Posts: 6,462
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I downloaded the manual and checked before replying.
It definitely states that those phono sockets directly drive a pair of speakers i.e. there's no additional amplification required. It also states that the speakers should be 8Ω ~ 16Ω The manual is on hifiengine.com As regards being 5.1, that was never claimed. It is simply "surround" and not even Dolby Pro-Logic. |
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#6 |
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Forum Member
Join Date: Jul 2009
Location: Milton Keynes
Posts: 104
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Thanks for the advice, and the link to the manual. As I have already tried to connect a second set of speakers to the phono outputs with no sound from them. I can only think that the amp Is faulty.
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#7 |
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Guest
Join Date: Feb 2008
Posts: 8,103
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Quote:
Thanks for the advice, and the link to the manual. As I have already tried to connect a second set of speakers to the phono outputs with no sound from them. I can only think that the amp Is faulty.
The surround speakers will only work on content that is stereo, they will not produce sound if the content is mono. |
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#8 |
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Forum Member
Join Date: Jul 2009
Location: Milton Keynes
Posts: 104
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I tested the speakers with the surround button in both positions and have come to the conclusion that the amp is faulty.
The input signal I assume is stereo as it was connected to the RCA audio out from my SKY box. |
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