I have an existing crossover that feeds one tweeter and two woofers.
The woofers are wired in parallel and are 8 ohm.
If I was to remove one woofer altogether, what would happen with the other woofer? Stay the same? Get louder?
Thanks.
The woofers are wired in parallel and are 8 ohm.
If I was to remove one woofer altogether, what would happen with the other woofer? Stay the same? Get louder?
Thanks.
The remaining woofer will play at the same volume as it did before, but the total LF output level
of the speaker system will decrease by 3dB, since the other woofer is gone and does not contribute.
The LF crossover point will also shift upward by an octave if the series inductor remains the same.
Double the inductor value to keep the LF crossover frequency the same.
f = R / (2Pi x L)
of the speaker system will decrease by 3dB, since the other woofer is gone and does not contribute.
The LF crossover point will also shift upward by an octave if the series inductor remains the same.
Double the inductor value to keep the LF crossover frequency the same.
f = R / (2Pi x L)
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Yes, but that would be terribly wasteful of amplifier power, about half would be wasted.
And it would have to be a large power rating resistor, at least 50W or more, that might not
be suitable for location inside the speaker cabinet. Much better to double the inductor value.
Do you have too much bass? If so, you may be able to increase the tweeter level instead,
by reducing its series resistor. Why do you want to remove one woofer, is it defective?
And it would have to be a large power rating resistor, at least 50W or more, that might not
be suitable for location inside the speaker cabinet. Much better to double the inductor value.
Do you have too much bass? If so, you may be able to increase the tweeter level instead,
by reducing its series resistor. Why do you want to remove one woofer, is it defective?
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I'm converting an existing design into a center speaker. Lose one woofer, lose some height... more practical solution.
You may have a slight increase in the lower octaves as the unused woofer will act as a passive radiator.
EDIT: Never mind, we were typing at the same time. 🙂
EDIT: Never mind, we were typing at the same time. 🙂
Is there a series resistor on the tweeter? You may need to increase it, to match the 3dB lower bass output.
Most of the speech frequencies will come out of the woofer though.
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Hey, why don't you try using a simulator, like XSim to try these ideas out on?
I posted a speaker design here:
A Speaker Maker's Journey: LM-1 Bookshelf Crossover
Grab the simulation files, and hack away. 🙂
Best,
E
I posted a speaker design here:
A Speaker Maker's Journey: LM-1 Bookshelf Crossover
Grab the simulation files, and hack away. 🙂
Best,
E
In addition to the decreased sound output of the woofers: a single woofer has an impedance twice as high as two woofers in parallel. Therefore the crossover will not function as intended. The crossover will need a redesign. A starting point is to double the inductor values and halve the capacitor values of the woofer section of the crossover. Then the remaining, single woofer will behave the same as before. The tweeter must be padded (in addition to the existing padding) by 6 dB to match the output level of the single woofer.
Center speakers can be tuned differently than front left / right speakers anyway, so a complete crossover redesign makes sense. Less baffle step compensation and no midrange dip. Experimenting with simulators as eriksquires proposed will give you insight.
Never mind, I'm overthinking it. Just build it and let the receiver take care of equalization. Then, should the sound be unsatisfactory, take a look at the crossover. 🙂
Center speakers can be tuned differently than front left / right speakers anyway, so a complete crossover redesign makes sense. Less baffle step compensation and no midrange dip. Experimenting with simulators as eriksquires proposed will give you insight.
Never mind, I'm overthinking it. Just build it and let the receiver take care of equalization. Then, should the sound be unsatisfactory, take a look at the crossover. 🙂
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