1. Join Now

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

Do you think this is within safe limits

Discussion in 'Hi-Fi Stereo Systems & Separates' started by 50/50, Jun 1, 2003.

  1. 50/50

    50/50
    Standard Member

    Joined:
    Jan 5, 2003
    Messages:
    249
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    16
    Location:
    Nottingham
    Ratings:
    +0
    Ive got a Sony TAFB740 (http://www.avland.co.uk/sony/tafb740/)

    Ive been running my current setup for the past month or so, and I havent run into any problems. Even with all the speakers on and the amp running at a about 10 o'clock.

    This is my current setup :


    Speaker A
    Switcher Box
    ^
    1. Tannoy R2
    2. Kef Cresta


    Speaker B
    Switcher Box
    ^
    1. Mission M72i
    2. Kef Coda 70



    The Tannoys, are in the living room, the missions in the kitchen, the Kef cresta's in the conservetory, and the Kef Coda in the office.

    It may seem abit weird, but It fits my need pretty well.

    The amp runs alittle warm when everything is on, but it has never cut-out or anything.


    Am I creating a fire risk ?
     
  2. nathan_silly

    nathan_silly
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    You're running FOUR pairs of speakers at one time? With a low current Sony?

    Are you mad?
     
  3. 50/50

    50/50
    Standard Member

    Joined:
    Jan 5, 2003
    Messages:
    249
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    16
    Location:
    Nottingham
    Ratings:
    +0
    hmm.. lets do the physics

    OMG, I think im running a 0.54 ohm load... am i correct ?

    I think Id better start looking for a new amp...
     
  4. sounddog

    sounddog
    Well-known Member

    Joined:
    Dec 11, 2002
    Messages:
    3,352
    Products Owned:
    0
    Products Wanted:
    1
    Trophy Points:
    107
    Location:
    Leicestershire, UK
    Ratings:
    +449
    No amp should be a fire risk unless it's faulty. Protection circuits should cut in long before then.

    However ... as nathan says ... running 4 sets of speakers off one amp is not advisable as it will put a large load on the amp, risking it going into clipping and damaging your speakers.

    Best bet would be to get a NAD or Rotel 6-channel amp off ebay (something like this http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=3027892252&category=3280), run 1 set of speakers of each 2-ch pair. Then run the 4th set directly off a new integrated amp (something like the NAD C320 would be fine - again look on eBay or similar for a bargain) - the new amp MUST have pre-amp outputs.

    Vikki
     
  5. nathan_silly

    nathan_silly
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    I guess running two pairs of speakers from one amp is OK- for multi-room background level. But not four amps at party levels.

    I second Vikki's comments with finding a multi-channel poweramp. In fact there are 8 and 12 channel poweramps around if you need that many (think B&K make a 12 channel pwr. amp)
     
  6. Sunday Ironfoot

    Sunday Ironfoot
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    50/50 says he's using a switcher box. Does that not mean he's switching between two sets of two pairs of speakers rather than running all four pairs at the same time?
     
  7. mjn

    mjn
    Distinguished Member

    Joined:
    May 24, 2001
    Messages:
    17,599
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    166
    Location:
    Herts, England
    Ratings:
    +4,518
    i think he is only running 2 sets of speakers at any one time....as he has 2 switch boxes....
     
  8. 50/50

    50/50
    Standard Member

    Joined:
    Jan 5, 2003
    Messages:
    249
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    16
    Location:
    Nottingham
    Ratings:
    +0
    The switch boxes have the choice of using 'speaker 1' or 'speaker 2' or '1&2'.

    So it lets me run both pairs of speakers at the same time.

    Im looking into a 6 channel amp. I dont think the sony will last very long.

    But im impressed that it is coping under such high loads !
     

Share This Page

Loading...