For speakers connected in series, there appears to be less control, and more of what is called 'back EMF' from the speakers fed back into the output circuit. Since no two speakers are exactly alike, even two of the same size, that damping will occur, however slight, for any speakers connected in parallel. By connecting two speakers in parallel, particularly two speakers of different sizes with different resonant frequencies, each speaker will tend to quench or dampen the boominess of the other. A speaker has a large impedance increase at its fundamental resonance, and depending on the installation, this can cause the speaker to sound boomy or out of control. HIFI designers took it one step further by connecting two speakers of different sizes in parallel. Are there any sonic differences or benefits of series over parallel wiring or vice versa?Ī - Gerald, connecting two speakers in parallel is an old trick to smooth out speaker response and enhance the damping of either speaker. My amp has both 4 and 16 Ohm output taps. Q - I have two 8 Ohm speakers that I can wire either in parallel or series to my tube amp, for an impedance of either 4 or 16 Ohm. Funny, the same question came up on AX84 yesterday, and here is what I posted, from the FAQs on Weber's Speakers BBS:
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