wizard
Well-Known Member
If you connect a 4 ohm audio output to an 8 ohm speaker will this reduce the output power(volume) as the resistance is higher by a noticeable amount ?
Radio Speaker resistance
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Ruffles
Well-Known Member
Output will be down by 3dB. Not really noticeable. Just turn the volume up a bit. Yours does go up to "11" doesn't it?!
BTW the sensitivity of different 'speakers varies by far more than 3dB!
BTW the sensitivity of different 'speakers varies by far more than 3dB!
davidpbo
Well-Known Member
[ QUOTE ]
Output will be down by 3dB.
[/ QUOTE ]
I think the perceived result will also be dependent on the efficiency and tonal quality of the speaker. Try it and see.
Output will be down by 3dB.
[/ QUOTE ]
I think the perceived result will also be dependent on the efficiency and tonal quality of the speaker. Try it and see.
MM5AHO
Well-Known Member
3dB would equate to halving the sound pressure - which sounds a dramatic reduction, but you'd be hard pressed to notice.
William_H
Well-Known Member
Just note that 8 ohms is not really the resistance. That is the rated impedance. Sort of AC resistance but then not quite as simple as that.
In nay case don't expect to put your ohm meter across the speaker and measure 8 ohms. You will measure s0omething more like .25 ohm DC.
8ohm speakers 4 ohm o/p no probs olewill
In nay case don't expect to put your ohm meter across the speaker and measure 8 ohms. You will measure s0omething more like .25 ohm DC.
8ohm speakers 4 ohm o/p no probs olewill
