System

I am thinking of getting a new home audio system, and I was wondering what I should look for in the impedance of my reciever’s output and speakers.

I know it’s measured in Ohms, usually 4,6, or 8, but which would give the best perfomance? I’m looking for the most accurate audio reproduction.

Any help would be greatly appreciated!
Also, I’m not looking to spend over $600 for the system. The best impedance rating withing this budget…

8 ohms is pretty much standard. 6 ohms is fine too. 4 ohm speakers will be easier to drive, but may cause some amplifiers to overheat…

4 Responses

1. flapjack Says:
   May 29th, 2010 at 12:00 pm

   characteristic impedance is not a nominal factor. Make sure both your amp and speakers are measured over the entire audio spectrum not just 1K Hz . Balance is much more important to consider. Make sure you always listen to the set up the way you intend to have it before you commit to much.
   References :
   MSEE

2. dmb06851 Says:
   May 29th, 2010 at 12:17 pm

   There is no "best" impedance.

   There is no particular load impedance which will give the "best" performance from any amplifier either.

   An audio amplifier is a voltage source and, as such, "matching" the load impedance to the source impedance is irrelevant (not to say impossible).

   The impedance quoted by the manufacturer is the lowest value which you should connect, otherwise the amplifier will be called upon to deliver more current than it can safely supply.

   Connecting a higher impedance ’speaker is quite ok. The only result is that there will be less power developed in it than in the "design" impedance.

   By the way, it’s simply ‘impedance’. The word ‘level’ is totally redundant and its addition makes you sound silly.
   References :

3. bkbarile Says:
   May 29th, 2010 at 12:23 pm

   worry about matching the rec, or amp to the speaker, a good amp with do anything 4,6, or 8 most home are 8 ohms, listen to the speaker, do not worry about stuff like this,

   it is all about sound
   References :

4. astralpen Says:
   May 29th, 2010 at 12:44 pm

   8 ohms is pretty much standard. 6 ohms is fine too. 4 ohm speakers will be easier to drive, but may cause some amplifiers to overheat…
   References :

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