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AMP Connection

johnshansen
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I was the lucky owner of a a Connect·Amp, and readily “upgraded” to AMP. Reconnecting the same speakers does not give me the same quality (expected an improvement).  The speakers connected it 2 x Speakercraft Speaker (ACCUFIT ULTRA SLIM THREE) and a SpeakerCraft  8.2 BAS  in-ceiling  sub-woofer. The way they connected to Connect:Amp was connecting the 2 channels to the subwoofer, which then sends “non-bas” to the 2 speakers. 

With AMP that gives a very thin sound with a very light bas. Turning BAS to max makes it still under bas’ed.

Please advise…

 

About Accufit Ultra Slim

https://www.evernote.com/shard/s1/sh/01eb69c3-7f8e-4cc6-95c7-b71d193e565d/05bf095bc6c81fa72f6bcaca653b02cf

 

About 8.2 BAS

https://www.evernote.com/shard/s1/sh/fa2b0896-f400-40d7-9e31-960471d9bcc4/ababb1d64edd29a21d78c51a8cd48b6e

 

Best answer by johnshansen

I connected with https://www.ceiling-speakers.co.uk/ , where I bought the speakers.

Jason quickly told me that others have had a similar problem, which can be caused by not phasing the 2 outputs correct. When that happens the Subwoofer cancel itself. Switching the lines on one of the speaker outputs solved the problem.

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6 replies

Ken_Griffiths

The 8.2 BAS speaker is shown in the documentation as a ‘passive’ Bass speaker. Looking at the Sonos Amp literature, it only supports third-party ‘active’ subwoofers, so that will be the reason it’s not working for you.

Airgetlam
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  • Airgetlam
    Airgetlam
johnshansen
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  • johnshansen
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  • May 17, 2021

Thanks Ken, but I only use the 2 main speaker connections (like I did on the old Connect:Amp) to use the sub’s built-in crossover (getting the full range signal from Sonos).

Ken_Griffiths
johnshansen wrote:

Thanks Ken, but I only use the 2 main speaker connections (like I did on the old Connect:Amp) to use the sub’s built-in crossover (getting the full range signal from Sonos).

Ah I see - I assume you have perhaps tried adjusting it’s crossover and phase switches to see if that may improve things?

Ken_Griffiths

If no joy with adjusting it’s crossover, then you may need to somehow add a separate Amp to drive the Sub as briefly outlined in this other thread I found…

https://en.community.sonos.com/components-228996/passive-outdoor-subwoofer-with-amp-how-to-6835675?postid=16391717#post16391717

 

johnshansen
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  • johnshansen
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  • May 17, 2021

I connected with https://www.ceiling-speakers.co.uk/ , where I bought the speakers.

Jason quickly told me that others have had a similar problem, which can be caused by not phasing the 2 outputs correct. When that happens the Subwoofer cancel itself. Switching the lines on one of the speaker outputs solved the problem.

Ken_Griffiths
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  • Ken_Griffiths
    Ken_Griffiths
Ken_Griffiths

Thanks for the feedback here @johnshansen. That’s well worth remembering and hopefully will be helpful to others too.👍

johnshansen
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  • johnshansen
    johnshansen
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