Question about Audio Players & Recorders
If you mean 3 x 12" drivers - being an odd no. is tricky if you need to maintain a particular impedance (important for Tube amps) but if solid state you have two choices (series and parallel) if all the drivers are sharing the same box space (i.e. the backs of the cones have a common airspace) - it is important to ensure that all drivers receive the same drive power so that the pressure remains equalised for all drivers. If your solid state amplifier can deal with very low impedances (e.g. 8/3=2.66 ohms) then maximum power can be achieved from the amplifier. If amp is rated for loads no less than 4 ohms, you would be better to take a power loss and go for safety and wire the speakers in series (e.g. 8 x 3= 24 ohms) - all competently designed direct coupled solid state amplifiers can deal comfortably with higher impedances, only down side is that power delivered will be much reduced.
If the drivers are in separate air spaces - then there more practical options - such as 2 in series and one in parallel with the series pair (resulting in 5.4 or so ohms for the combination assuming 8 ohm drivers) - note the single parallel driver will be recieving several times more power and should be placed in the centre of any array to maintain dispersion.
Posted on Feb 18, 2010
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Posted on Jan 02, 2017
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