can 2 amps run to dvc sub?
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=121067
Printed Date: May 10, 2024 at 1:02 PM
Topic: can 2 amps run to dvc sub?
Posted By: zeepian
Subject: can 2 amps run to dvc sub?
Date Posted: March 29, 2010 at 10:07 PM
Hey guy, I got a pioneer DVC TS-W5102SPL champion series sub, and my massive 3000.1 smoked out on me....this is the second time and im not gonna pay 260 to get it repaired....again. But i was gonna trade this broken amp to a guy with 2 powerbass 1000.1's amps. is powerbass any good? and can I run 2 amps at 1 ohm each to the sub to produce 2000rms? I got 0 guage and a kinetic 1800 in the trunk, and a 200amp alternator. Now the first time i blew the massive was cuz i ran it at 1 ohm....and the amp couldnt take it. so when i got it...i put it at 4 ohm and it took less than 2 minutes of bass and the amp smoked out. Amp still turns on.... any advice?
Replies:
Posted By: j.reed
Date Posted: March 29, 2010 at 11:15 PM
Correct me if i am wrong but is that sub not 2ohm coils? How would you ever run an amp to one coil for a 1ohm load? You can run an amp per coil, but IMO it is best to use a strapable amp so there is easy gain matching. ------------- 
Posted By: haemphyst
Date Posted: March 30, 2010 at 11:37 AM
1: No. Powerbass is craptastic. He's gonna pay the cash to get it repaired, have a far better amp, and laugh at you behind your back.
2: Yes, you can run one amp to each voice coil, and gain "matching" won't matter one iota.
I still think you might be better off repairing the Massive amp repaired, but when you get it back, RECHECK YOUR WIRING! I bet you are going below the amplifiers rating EVEN THOUGH the woofer's two voice coils paralleled are one ohm. That's a NET one ohm load, but we all know that the impedance can drop below that.
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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."
Posted By: zeepian
Date Posted: March 30, 2010 at 2:45 PM
yea dude....im gonna try and trade my massive to the company for an upgrade
Posted By: zeepian
Date Posted: April 06, 2010 at 11:18 PM
hmmm....the manual for the speaker shows this...... 
Posted By: haemphyst
Date Posted: April 06, 2010 at 11:55 PM
And what, precisely, is "this"? I don't see what "this" is; exactly that you are showing in that PDF screenshot?
That he can, indeed, run one amp per voice coil, as has already been confirmed?
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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."
Posted By: zeepian
Date Posted: April 07, 2010 at 2:03 AM
I know it's possible....but smart?
Posted By: haemphyst
Date Posted: April 07, 2010 at 7:27 AM
zeepian wrote:
I know it's possible....but smart?
As long as the power handling of the woofer isn't exceeded, what's the difference? Really?
I know the answer, I am just asking to make YOU think about it. Seriously, what's the difference? ------------- 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."
Posted By: zeepian
Date Posted: April 07, 2010 at 7:13 PM
i feel like the voice coils will end up burning because the amps have to be puttin out exactly the same amount on the each voicecoil right?
i appreciate you guys telling me what it is.
Posted By: haemphyst
Date Posted: April 08, 2010 at 6:18 PM
zeepian wrote:
i feel like the voice coils will end up burning because the amps have to be puttin out exactly the same amount on the each voicecoil right?
i appreciate you guys telling me what it is.
No. A common misconception, you can even wire them out of phase completely, and as long as the power handling of the motor structure is not exceeded, you'll never have any issues. ------------- 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."
Posted By: mastermindz
Date Posted: April 13, 2010 at 6:04 AM
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?
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Mastermindz
Posted By: haemphyst
Date Posted: April 13, 2010 at 11:09 AM
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.
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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."
Posted By: licto
Date Posted: April 13, 2010 at 8:50 PM
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
Posted By: ianarian
Date Posted: April 13, 2010 at 9:13 PM
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.
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This is what I do for FUN!
Posted By: ianarian
Date Posted: April 13, 2010 at 9:26 PM
Oh ya, the 4ch amp was a 25x4, Yamaha!
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This is what I do for FUN!
Posted By: haemphyst
Date Posted: April 13, 2010 at 11:50 PM
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.
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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."
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