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Speaker Asylum General speaker questions for audio and home theater. |
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Speaker Asylum General speaker questions for audio and home theater. |
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In Reply to: driver specs posted by nate_hubble on July 23, 2002 at 06:54:49:
I appreciate your kind words.Okay, first of all, amplifiers usually have a more difficult time with a low-impedance load than with a high-impedance load, so you needn't worry about the high-impedance load stressing your amp. Think of a couple of extreme cases - a dead short, and an open circuit. The dead short is extremely low impedance and hopefully your amp will blow a fuse or shut down before it self-destructs. An open circuit is an infinitely high impedance, and poses absolutely no threat to the amplifier.
Whether the voice coils of the two identical woofers are hooked up in series or in parallel has no practical effect on their power handling.
If you wire the woofers in parallel, that will give you a sensitivity of 94 dB for 2.83 volts, while your tweeter is 92 dB sensitive. This might work - you see, in general a gently downward-sloping response curve sounds better than a "flat" one. You'd have to do a little juggling of component values to get a good blend - for example, on the low-pass filter, you might want to use an inductor 1.5 to 2 times as large as the equations predict, and a correspondingly smaller capacitor (assuming a 2nd-order filter).
If you wire the woofers in series the sensitivity will remain at 88 dB, so you'd need to "pad" the tweeter down. I'd probably try a resistor in series, before the crossover filter. Unless you really need to squeeze as much power as possible out of your amps (I'm assuming you have solid state amps), I'd go with the series woofer configuration (unless, of course, it turns out that parallel sounds better).
Best of luck to you!
Duke
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Follow Ups
- Thanks, Nate! - Duke 11:39:07 07/23/02 (0)
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