what impendence am i acheiving that a 49-51 hz tone?

[Dirtrider4eva 10+ year member]

basically,

i have a box. its tuned to abbout 48 hz, for more daily, but when i compete, i want to change running my sub from 2 ohms to half ohm, and with rise and at a specific hz, i should be at 1-2ohm ideally.

i know certain tones create different impedence, and thats why i want to know how to get it tuned ever so right.

my sub can be run at .6 ohm, then with rise of box, maybe 1 0hm, but what about after the impedence of a tone?

what does that change to?

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[Epic0318 10+ year member]

im pretty sure that just going to take experimenting and taking readings with a dmm to find out.

 

[Dirtrider4eva 10+ year member]

so im going to have to run a DDm through the positive and negative amp terminals and play the tones?

 

[Z1NONLY 10+ year member]

My Bass Box software graphs system impedance over the entire response curve. I have never checked to verify the accuracy of the graphs though.

 

[Dirtrider4eva 10+ year member]

how would i do it with a ddm though? say it plays 50hz, at maybe 2 ohms, however, what will the woofer play if its hooked up to be at .6 ohms?

 

[THATpurpleKUSH 5,000+ posts]

You need a clamp meter and a dmm. Instead of multipying the results together you divide them to get the impedence.

power = volts x amps

impedence = volts / amps

 

[Z1NONLY 10+ year member]

I think I misunderstood the original question.

Are you simply considering rewiring a dual voice coil sub?

 

[keep_hope_alive Premium Member]

you're understanding is a bit off.

the impedance of a sub (or speaker) looks like this:

to know the impedance of your sub at each frequency, buy one of these:

Dayton Audio WT3 Woofer Tester

 

[wenn_du_weinst 10+ year member]

impedance changes with, temp, wattage, volume, box size, air density, suspension stiffness, music type, ect. ect.

there is no way to tell what impedance you will sit at as it is always different, you could drop under .6ohms for all we know. Boxes do not raise impedance they drop it. A driver running free air can spike 20-30ohms depending which speaker it is.

 

[mlstrass 5,000+ posts]

tuning is pretty high for a daily set up. Where does your car peak at? Dropping final load shouldn't change your peak.

You going to Madison this Sunday?

 

[Kangaroux 5,000+ posts]

impedance changes with, temp, wattage, volume, box size, air density, suspension stiffness, music type, ect. ect. there is no way to tell what impedance you will sit at as it is always different, you could drop under .6ohms for all we know. Boxes do not raise impedance they drop it. A driver running free air can spike 20-30ohms depending which speaker it is.

Then why is it called box rise and not box drop lol

 

[SourDeez 10+ year member]

Then why is it called box rise and not box drop lol

I really wanna laugh at your sig pic, but i can't.. The words are just not right. There could be some super funny ones I bet

 

[wenn_du_weinst 10+ year member]

Then why is it called box rise and not box drop lol

no idea, it's one of my biggest pet peeves actually. A driver free air will raise a massive amount at fs. This is why wall socket test are pointless

 

[SourDeez 10+ year member]

This is why wall socket test are pointless

What if its enclosed

 

[wenn_du_weinst 10+ year member]

it's still dirty clipped power so still pointless. It's good if you wanna see smoke that's about it. It's also why some woofers take so long to blow and people claiming huge power from the socket and not blowing they are only using rated impedance not actual to figure out their power usage