stock speaker impedance
02-23-2009, 05:41 PM
#11
Your HU is meant only for a 4ohm minimum load. However, Sonce the 2ohm speaker trend started about 3 years ago, I have yet to see any head units wth blown MOSFETS due to 2 ohm speakers. The truth about it is, your HU might run a little hotter. It might make 5% more power but at a much higher distortion rate. The power supply for IC/Mosfet in the head unit is small and allready pretty much maxed out with a 4ohm spaker load so it cannot produce any more power maximum power. It will produce full power earlier on the volume ****, but anything past there is just mega distortion.
So it won't do you any harm, but it's not doing you any good either.
Also the Infinity/JBL sensitivity ratigns are not 1W1M, they are 2.83V/1Meter. 2.83V is a unit used more for home theater as equates very closely to 1 watt of power on an 8ohm load. at a 2ohm load that's 4 watts of power.
Now 95dB 2.83Vat a 2ohm load is the same as 89Db 1Watt/1Meter... not very efficient.
All these companies are seriously just finding ways to polish their turds using creative/sneaky ways to inflate numbers while looking mathematically correct.
so remember as a guide.
if you see the rating based on 2.83V
2ohm speaker, subtract 6dB to get the 1watt/1meter number
4Ohm Speaker Subtract 3dB to get the 1watt/1meter number
8ohm speaker 2.83V is 1 watt...so no adjustment needed
So it won't do you any harm, but it's not doing you any good either.
Also the Infinity/JBL sensitivity ratigns are not 1W1M, they are 2.83V/1Meter. 2.83V is a unit used more for home theater as equates very closely to 1 watt of power on an 8ohm load. at a 2ohm load that's 4 watts of power.
Now 95dB 2.83Vat a 2ohm load is the same as 89Db 1Watt/1Meter... not very efficient.
All these companies are seriously just finding ways to polish their turds using creative/sneaky ways to inflate numbers while looking mathematically correct.
so remember as a guide.
if you see the rating based on 2.83V
2ohm speaker, subtract 6dB to get the 1watt/1meter number
4Ohm Speaker Subtract 3dB to get the 1watt/1meter number
8ohm speaker 2.83V is 1 watt...so no adjustment needed
02-23-2009, 06:13 PM
#12
Your HU is meant only for a 4ohm minimum load. However, Sonce the 2ohm speaker trend started about 3 years ago, I have yet to see any head units wth blown MOSFETS due to 2 ohm speakers. The truth about it is, your HU might run a little hotter. It might make 5% more power but at a much higher distortion rate. The power supply for IC/Mosfet in the head unit is small and allready pretty much maxed out with a 4ohm spaker load so it cannot produce any more power maximum power. It will produce full power earlier on the volume ****, but anything past there is just mega distortion.
So it won't do you any harm, but it's not doing you any good either.
Also the Infinity/JBL sensitivity ratigns are not 1W1M, they are 2.83V/1Meter. 2.83V is a unit used more for home theater as equates very closely to 1 watt of power on an 8ohm load. at a 2ohm load that's 4 watts of power.
Now 95dB 2.83Vat a 2ohm load is the same as 89Db 1Watt/1Meter... not very efficient.
All these companies are seriously just finding ways to polish their turds using creative/sneaky ways to inflate numbers while looking mathematically correct.
so remember as a guide.
if you see the rating based on 2.83V
2ohm speaker, subtract 6dB to get the 1watt/1meter number
4Ohm Speaker Subtract 3dB to get the 1watt/1meter number
8ohm speaker 2.83V is 1 watt...so no adjustment needed
So it won't do you any harm, but it's not doing you any good either.
Also the Infinity/JBL sensitivity ratigns are not 1W1M, they are 2.83V/1Meter. 2.83V is a unit used more for home theater as equates very closely to 1 watt of power on an 8ohm load. at a 2ohm load that's 4 watts of power.
Now 95dB 2.83Vat a 2ohm load is the same as 89Db 1Watt/1Meter... not very efficient.
All these companies are seriously just finding ways to polish their turds using creative/sneaky ways to inflate numbers while looking mathematically correct.
so remember as a guide.
if you see the rating based on 2.83V
2ohm speaker, subtract 6dB to get the 1watt/1meter number
4Ohm Speaker Subtract 3dB to get the 1watt/1meter number
8ohm speaker 2.83V is 1 watt...so no adjustment needed
02-23-2009, 06:16 PM
#13
Could you actually hear the difference?. If you listen to MP3's all the time chances are you'll never notice the added distortion anyways.
I'm ahuge advocate of going to a few shops and buying with your ears.
And if you get a salesman say.."Well the infinities have a 95dB efficiency rating" you can now school them
I'm ahuge advocate of going to a few shops and buying with your ears.
And if you get a salesman say.."Well the infinities have a 95dB efficiency rating" you can now school them
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