Discussion in 'AV Receivers & Amplifiers' started by ewin, Mar 24, 2003.
Can anyone tell me what wiring up in parrell and series means as i`m so stupid.
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
Because i`ve got ex 6.1 and want two rear speakers at the the back
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.
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.
Think you're right General.
1/8 + 1/8 = 2/8 = 4 ohms (not easy to drive)
8 + 8 = 16 ohms (easier to drive)
Thanks for the back up. Nearly looked really thick there.
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.
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.
I think I might have to correct you.
If V = I X R
I = V / R
Power = Current x Resistance ( P = IR not V = IR )
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!
No it isn't
Ohms Law is V=IR
the one you are thinking of is P=IV.
Oh, right you are then...has been 15 years since I last had to remember it!
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.
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 ...."
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