1. Join Now

    AVForums.com uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

wiring up speakers

Discussion in 'AV Receivers & Amplifiers' started by ewin, Mar 24, 2003.

  1. ewin

    ewin
    Standard Member

    Joined:
    Feb 25, 2003
    Messages:
    123
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    16
    Location:
    scotland
    Ratings:
    +0
    Can anyone tell me what wiring up in parrell and series means as i`m so stupid.
     
  2. hornydragon

    hornydragon
    Well-known Member

    Joined:
    Dec 19, 2001
    Messages:
    28,293
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    136
    Location:
    Somewhere near the M4 most of the time......
    Ratings:
    +1,215
    Series is amp>speaker>speaker>speaker>amp
    Parraleel is amp>speaker>amp>Speaker>amp>speaker>amp

    But why would you want to do this, what cables are using and what speakers????
    PS read the manual
     
  3. ewin

    ewin
    Standard Member

    Joined:
    Feb 25, 2003
    Messages:
    123
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    16
    Location:
    scotland
    Ratings:
    +0
    Because i`ve got ex 6.1 and want two rear speakers at the the back
     
  4. Sunday Ironfoot

    Sunday Ironfoot
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    :rolleyes: :rolleyes: :rolleyes:

    Err...I wouldn't wire them up in series if I were you...you might blow something. In fact I don't think there's a speaker/amp combination in the world that can be wired as series, someone prove me wrong.
     
  5. General Skanky

    General Skanky
    Active Member

    Joined:
    Jul 28, 2000
    Messages:
    4,206
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    71
    Ratings:
    +44
    I'm a bit rusty here, but don't you mean parallel?

    In series they increase resistance meaning lower current draw. I think.

    Ohms Law is V = I x R isn't it?

    V is voltage
    I is current
    R is resistance.

    So I = R/V

    Correct me if I'm wrong.:confused: :)
     
  6. ReTrO

    ReTrO
    Active Member

    Joined:
    Jul 12, 2000
    Messages:
    3,498
    Products Owned:
    0
    Products Wanted:
    2
    Trophy Points:
    71
    Location:
    High Wycombe, Bucks, UK
    Ratings:
    +59
    Think you're right General.

    For example

    Parallel:

    1/8 + 1/8 = 2/8 = 4 ohms (not easy to drive)

    Series:

    8 + 8 = 16 ohms (easier to drive)
     
  7. General Skanky

    General Skanky
    Active Member

    Joined:
    Jul 28, 2000
    Messages:
    4,206
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    71
    Ratings:
    +44
    Thanks for the back up. Nearly looked really thick there.:laugh:

    I remember an article in a Home Entertainment mag years ago, about someone called Hoffler (I think) who used speakers in series to do wraparound sound.

    I remember it, as it meant a low powered amp (low rear watts for mono pro logic surround amps in those days), could drive more speakers with less strain than driving just the pair. Odd how physics works.
     
  8. EvilMudge

    EvilMudge
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    Tell me about it.
    BTW there are some golden ratios of input/output impedance which integrated amplifier and active speaker designers rely on, which do more for the sound quality of the product than a dual mono construction does (in reality) - which is why some integrated amps can beat pre/power combis at a similar price.
     
  9. chipper

    chipper
    Active Member

    Joined:
    Jan 21, 2003
    Messages:
    126
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    18
    Ratings:
    +3
    I think I might have to correct you.

    If V = I X R
    then
    I = V / R
    :lesson: :lesson: :lesson: :clap: :clap: :clap:
     
  10. deckard

    deckard
    Standard Member

    Joined:
    Dec 4, 2002
    Messages:
    425
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    16
    Location:
    leicester
    Ratings:
    +0
    Isn't it:-

    Power = Current x Resistance ( P = IR not V = IR )
     
  11. alexs2

    alexs2
    Well-known Member

    Joined:
    Nov 13, 2002
    Messages:
    13,895
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    136
    Ratings:
    +1,674
    EvilMudge...the guy's name was Hafler,and the idea was to connect a rear speaker of suitable impedance across the positive terminals of the stereo amp and use the difference signal to drive a rear speaker for a sort of ambience feed....still didnt stop it melting the odd amp that couldn't deal with this sort of thing!
     
  12. andyk

    andyk
    Active Member

    Joined:
    Dec 31, 2001
    Messages:
    767
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    46
    Location:
    North Yorkshire
    Ratings:
    +165
    No it isn't

    Ohms Law is V=IR

    the one you are thinking of is P=IV.
     
  13. deckard

    deckard
    Standard Member

    Joined:
    Dec 4, 2002
    Messages:
    425
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    16
    Location:
    leicester
    Ratings:
    +0
    Oh, right you are then...has been 15 years since I last had to remember it!
     
  14. lynx

    lynx
    Well-known Member

    Joined:
    Jan 20, 2002
    Messages:
    4,633
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    106
    Location:
    It always rains.
    Ratings:
    +301
    When speakers are connected in parallel, the impedance is reduced. This means that, given the same output voltage, the current demand on the amplifier will be increased. If all speakers have the same impedance, the total impedance is the impedance of a single speaker divided by the total number of speakers. If you have two 4 ohm speakers connected in parallel, the total impedance is 4/2 or 2 ohms. You must be careful when paralleling speakers onto an amplifier. The impedance can quickly fall below safe levels. This is especially true when connecting speakers in parallel onto a bridged amplifier.
     
  15. Jonathan West

    Jonathan West
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    Best way to remember that one ...

    Power = Ivy Watts (gettit?)

    Physics teacher tought me that one along with the mechanics question starting "A balding mole is proceeding through the wood at 3 ms-1 ...."
     

Share This Page

Loading...