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Centre Speaker Impedance?

Discussion in 'Home Cinema Speakers' started by hutchingsp, Dec 28, 2002.

  1. hutchingsp

    hutchingsp
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    I have a Sony STR-DB830 home cinema receiver.

    It's hooked up to a front set of B&W DM601s and a rear set of Mordaunt Short MS05s.

    Both these sets of speakers are 8ohms impedance. There is a switch on the rear of the amp to select 4ohm or 8ohm, the manual says to select four if the speakers are between 4ohm and 8ohm.

    I'm now looking for a centre speaker, and I'm a little confused as to what I can buy?

    Can I only get something that is 8ohm, or (as seems to be the case with a lot of centre speakers) could I attach a 6ohm centre speaker?

    Specifically I'm looking at the Gale Centre 10 - cheap and nasty in absolute terms maybe, but as it's a bedroom setup for £20 I think it'll do the job.

    I'm a little unsure of what the implications may be, I'd appreciate some advice or pointers.

    regards
    Paul
     
  2. lynx

    lynx
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    You can connect a speaker rated at 6 ohm,and switch the reciever to 4 ohm.This means that the output devices will be 'throttled back' a little,to protect the unit from low impedence stress.The lower the ohmic value the greater the load placed on the amp. :)
     
  3. hutchingsp

    hutchingsp
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    OK, so switch it to 4ohm even though the front and rear speakers are rated at 8ohm?

    Don't wish to sound paranoid, but my B&Ws cost £200 - there's no danger of doing any harm/damage?

    Paul
     
  4. lynx

    lynx
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    There is no danger to the speakers.It is the amp which is vulnerable which is why Sony provide this ''limiter'' switch.
     
  5. Ian J

    Ian J
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    I am not sure that I would agree with you as it is important that the front three integrate seamlessly and I don't think that a £20 centre speaker would.

    Don't forget that 90% of most films is dialogue which would come out via the centre speaker and I feel that you may soon be complaining that your setup doesn't sound very good.
     
  6. hutchingsp

    hutchingsp
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    Well, my philosophy (it may be flawed) is that I'd sooner spend £20 and try it on the basis it may sound fine than spend a couple of hundred quid and only be a little more pleased.

    I did get the Centre 10, it's actually better built than I expected (I was expecting _really_ cheap and nasty) and albeit after only a couple of hours it sounds fine to me - presumably it may loosen up a little and sound different as it wears in...

    Being in a bedroom the old volume dial doesn't go much beyond 9 o'clock so I don't know how it would cope with higher volumes..

    If I decide to upgrade after six months I suspect I'll still get £20 for it at work, if not que cera cera...

    Paul
     
  7. Geoffc10

    Geoffc10
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    using the gale10, the speaker would cut out if it got too much volume to protect the speaker
     

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