Why do watts matter?

Autor

Beitrag

Arj
Inventar

#51 erstellt: 03. Mai 2006, 11:26

Thtas funny.. with 112 dB, the formula gives a value of 10.
So you need to multiply by 10 to get 100 %. but that means that at 82dB the speaker is 5% efficient . somehow that makes more sense.

so a typical speaker at arpund 87-89 dB will be soùmething like 9-10 % efficient

Eff (x10) Sens

10.0 = 112
7.4 = 109
5.5 = 106
4.1 = 103
3.0 = 100
2.2 = 97
1.7 = 94
1.2 = 91
0.9 = 88
0.7 = 85
0.5 = 82

some more research required

deaf
Stammgast

#52 erstellt: 03. Mai 2006, 11:38

Sorry Dude my mistake,

.You are spot on
Regards Deaf.

Savyasaachi
Inventar

#53 erstellt: 03. Mai 2006, 11:38

deaf schrieb:

As we can see Arj has really started his research,and his figures are spot on,also what I guessed was correct too.For 100% efficiency a driver has too have a sensitivity of 112db/1watt/1mtr.
Regards Deaf.

that's right..i remmeber opening a therad on diyaudio.com quite a while back debating on sensitivity and efficiency..suggest u look it up by searching fo rit...ver informative with formlaer for calculating both...the 112dB is the reference...i guess i would benefit by having another look at that thread myself..