No. The number of drivers has no bearing on the speaker impedance.Quote:
Originally Posted by ryanenos /t/1521495/impedance-of-bookshelf-vs-floorstanding-question#post_24453711
shouldn't a 4 way floorstander have less impedance than a 2 way bookshelf?
No. Let's say for example we have a 2 way speaker with a 1kHz xover and each driver is a nominally 8R unit. The xover for the tweeter works to roll off the signals below 1kHz by increasing impedance in series with the driver below 1kHz. The woofer xover does similarly, but it increases impedance above 1kHz. These two sections are connected in parallel so that the higher impedance of the other section barely makes any difference. At 100Hz, the amplifier sees the 8R of the woofer in parallel with the crossover imedance as well as that 8R of the tweeter. At 100Hz the HF section in total my be 50R which in parallel is about 6.9R still close enough to 8R. It doesn't matter how many ways/sections you add, the results will be roughly the same, but also depend if the designer cares what the final impedance curve for the speaker is like. As another poster mentions, the typical impedance curve of a speaker is anything but flat.Quote:
Originally Posted by ryanenos /t/1521495/impedance-of-bookshelf-vs-floorstanding-question/0_50#post_24453711
How do most small bookshelf speakers and large floorstanding speakers have the same impedance and sensetivities? shouldn't a 4 way floorstander have less impedance than a 2 way bookshelf?