| Re: 3 way with differing impedence drivers
This is only a bad idea if your amp can't drive a 4 ohm load or if you are using tubes (which like a flat impedence).
One thought - putting two 88dB drivers in parallel will make the mid's efficiency 94dB. If 91dB is the goal, you can then add a 2 ohm resistor in series so you have 91dB and a 6 ohm load. Most 8 ohm recievers can drive 6 ohms.
One thing to be aware of is that published efficiencies are averaged over the the driver's bandwidth. They are often not perfectly flat or exactly where you might think they are. Make sure to test the drivers in baffle before building the x-over.
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