P
Phil Allison
- Jan 1, 1970
- 0
"Stretto"
** The gauge of wire used inside a speaker to make the voice coil has NO
effect on efficiency. The same speaker could be produced with impedance
anywhere from 0.5 ohms to 50 ohms just by altering the wire gauge. The
important thing is that the same overall VOLUME of copper is used to make
the coil.
The voltages that amplifiers deliver to speakers is kept within safe limits
if the speaker is no more than 8 to 16 ohms.
A 100 ohm speaker would require dangerously a high drive voltage at power
levels of 50 watts or more ( ie 70 volts rms) and hence preclude domestic
use.
..... Phil
They are obviously not common but what are the pro's and cons? I can't
think of any cons except the higher voltage. Lower current = more
efficient, smaller wire, etc...
** The gauge of wire used inside a speaker to make the voice coil has NO
effect on efficiency. The same speaker could be produced with impedance
anywhere from 0.5 ohms to 50 ohms just by altering the wire gauge. The
important thing is that the same overall VOLUME of copper is used to make
the coil.
The voltages that amplifiers deliver to speakers is kept within safe limits
if the speaker is no more than 8 to 16 ohms.
A 100 ohm speaker would require dangerously a high drive voltage at power
levels of 50 watts or more ( ie 70 volts rms) and hence preclude domestic
use.
..... Phil