1 vc on a dvc conversion info

The resistor value would be determined by how much you want to change the Qts of the driver. A short will lower it the MOST, open coil will lower it the LEAST. A resistor value anywhere between zero and 200 gig-ohms would be acceptable.

This is why Dan said to use a potentiometer on the second coil, to "dial-in" the Qts you are looking for, on-the-fly. You can adjust the sound of the system while you are listening to it...

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

maybe my brain just isn't running right today, but what is the purpose to this? like what's the advantage to shorting one of the coils? tighter bass due to the brake?

Yes. My tuning the woofer to the enclosure, instead of the other way around, you can miss a bit on your enclosure construction, and end up with still a reasonable sounding system.

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

I'm coming back to work in a few hours, so I'll answer more completely then. Just don't have time at this juncture.

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

Now, let's see if I can answer that question for you.

OK. You know that when elctricity moves through a wire, a magnetic field is set up, right? You know that whan a wire is moved through a magnetic field, an electric current is produced right? The electric current being produced by the magnetic field is producing it OWN magnetic field, in opposite fields as the magnetic field that is producing the electric current.

For now, all of the voltage produced is (relatively) high, with ZERO current - there can't be a current, as there is no circuit, right? So what happens when you CREATE a circuit, with say, a shorting lead, or a resistor? Now there is a current. The lower the resistance this circuit is, the more current produced, as the resistance decreases, the current goes up, and the voltage goes down.

When the current goes up, the AMP-TURNS inside the circuit (the voice-coil) goes up, producing a stronger magnetic field. The stronger this magnetic field is, the harder it wants to push against the magnetic field of the permanent magnetic field within the motor structure. It will resist moving more, the lower the resistance placed across the terminals.

Try this experiment: Take any woofer. Make a jumper lead. Connect one end of the jumper to one terminal. Hold the other end with one hand. With the other hand, press gently on the cone of the woofer, release, repeat. Now, while doing the press, release, repeat cycle, connect the other end of the jumper to the other terminal. You will INSTANTLY feel the suspension become "stiffer", but it isn't the suspension - it hasn't changed, has it? No, the mechanical damping you are feeling is the magnetic fields - one static (from the motor structure), and one dynamic (from the voice coil) - repelling each other. It is exactly this increase in mechanical damping that is happening when you jumper the second voice coil of a DVC woofer.

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."