can 2 amps run to dvc sub?

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mastermindz

Copper - Posts: 70

Joined: December 17, 2009

Location: California, United States

Posted: April 13, 2010 at 6:04 AM / IP Logged

So does this also mean the same when wiring a dvc sub to a monblock amp and wiring the vc's to seperate terminals on the amp?

Mastermindz

haemphyst

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Joined: January 19, 2003

Location: Michigan, Bouvet Island

Posted: April 13, 2010 at 11:09 AM / IP Logged

It applies whenever you are connecting *any* DVC woofer to any single mono or stereo amp or combination of amps. The amplifiers also need to be connected in a manner that is load appropriate and safe for THEM, meaning no cross-connected wires or other types of shorts between different amplifiers or channels, and a safe impedance connected to them.

As long as the total electrical continuous power handling of the woofer is not exceeded, you can connect one coil to one 1,000 watt amp and the other coil directly to your car's battery... it won't matter. The woofer will not care. It may or may not play OPTIMALLY, but the woofer simply will not care that one voice coil is being driven one way, and the other is being driven a completely different way.

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."

licto

Member - Posts: 42

Joined: January 21, 2010

Posted: April 13, 2010 at 8:50 PM / IP Logged

Hey Haem....... I have read this stuff, read it again and again..... and I just scratch my head....... I have a little AC and DV theory under the belt (I keep it next to the important stuff)......

And it all just confuses me.......

Say you have two amps....... gains are different. Two voice coils and same magnet structure. When you drive an AC freq into coil A and it has a higher amplitude at say 45 degrees and coil B has a lower amplitude at same point....... wont coil B just be along for the ride.

Question about sub construction....... arent dual voice coils just wound and isolated from each other, but still attached at the same point on the driver.

This is where things get fuzzy on the AC side..... if you wire things out of phase, wont they want to go different directions.

And HA HA,,,,,, Wire one coil directly to the battery...... GrIN!!!!

PS>> Going for some SQ this weekend with some MLV, Ensolite, and wiring the seperates up active to the 9887. Hope it helps and if not, at least I am set up to get some great components in the future.

Licto

ianarian

Copper - Posts: 516

Joined: April 24, 2009

Location: California, United States

Posted: April 13, 2010 at 9:13 PM / IP Logged

I was also under the belief that matching signals that are applied simultaneously to each coil is imperative. I almost fried a JL DVC with a 4 channel amp one time. It was from the bass boost of one side being 6Hz higher than the other side. I think that's where I learned about that! As well as comments from others.

This is what I do for FUN!

ianarian

Copper - Posts: 516

Joined: April 24, 2009

Location: California, United States

Posted: April 13, 2010 at 9:26 PM / IP Logged

Oh ya, the 4ch amp was a 25x4, Yamaha!

This is what I do for FUN!

haemphyst

Platinum - Posts: 5,054

Joined: January 19, 2003

Location: Michigan, Bouvet Island

Posted: April 13, 2010 at 11:50 PM / IP Logged

As I said, the overall response might not be OPTIMAL, because yes, there may or may not be some amount of cancellation, simply due to the different voltage and current phase angles. If you are thinking that the magnetic fields want to "tear the coils apart", this is where the confusion is happening, I expect.

The magnetic fields simply CANCEL. Any negative field will simply make the positive field weaker, up to and including a complete cancellation. A cancellation of magnetic field simply results in zero output.

I am at a loss finding the long thread we had regarding this very subject... If someone else finds it, please post! I'll look for it a bit more, and post it if I locate it.

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."

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can 2 amps run to dvc sub?

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