If I have a dual voice coil woofer that has two 8 Ohm voice coils, what effect on the T/S parameters would only using one of the voice coils have?
I'm guessing power handeling would go down, as would the efficiency (at 2.83V), but other than that what else? The efficiency at 1w would stay the same, correct?
Also, I read somewhere but cannot remember where that when doing so one could place a resistor across the unused voice coil to tailor a Q factor, not sure which, anyone know of this?
I ask because I'd like to use it with an amp that cares not too much for 4 Ohm loads, if I have to I'll put them in parallel, but the power of the amp would drop...
I'm guessing power handeling would go down, as would the efficiency (at 2.83V), but other than that what else? The efficiency at 1w would stay the same, correct?
Also, I read somewhere but cannot remember where that when doing so one could place a resistor across the unused voice coil to tailor a Q factor, not sure which, anyone know of this?
I ask because I'd like to use it with an amp that cares not too much for 4 Ohm loads, if I have to I'll put them in parallel, but the power of the amp would drop...
If one coil is used and the other is open, the Qes is doubled and the Qts is approximately doubled. The 1W sensitivity goes down 3dB and the 2.83 V sensitivity goes down 6dB.
The resistor damped coil causes a reduction in Qms.
http://www.adireaudio.com/tech_papers/rdo_operation.htm
The change in T/S parameters and everything else can be calculated by a spreadsheet at the address above.
The resistor damped coil causes a reduction in Qms.
http://www.adireaudio.com/tech_papers/rdo_operation.htm
The change in T/S parameters and everything else can be calculated by a spreadsheet at the address above.
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