2 ohm vs 4 ohm?

[jellyfish420 10+ year member]

so when designing a box you would use the t/s parameters for a single coil, insead of either the series/parallel parameters?

 

[squeak9798 5,000+ posts]

so when designing a box you would use the t/s parameters for a single coil, insead of either the series/parallel parameters?

Yes. On a DVC sub, the published T/S specs are commonly measured with the coils in series. But, if you are only using one coil, then those published T/S specs will be worthless, so you would need to remeasure the t/s params with only one coil being used. And you need special equipment to be able to do this....not something most amatuers possess.

 

[jellyfish420 10+ year member]

i was just asking someone on here, i think steve, gave me the t/s param on my sub for single coil, parallel, and series.

 

[squeak9798 5,000+ posts]

i was just asking someone on here, i think steve, gave me the t/s param on my sub for single coil, parallel, and series.

That's cause he's more than human and possesses a higher intellect than has yet to be conceived here on earth

//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif I don't even know what sub you have....LOL

 

[blackgeltabs 5,000+ posts]

No, it won't ruin the sub. But it will completely change the subs parameters, which means the recommended box size won't work and you would need to re-measure the subs T/S parameters, the motor strength is reduced, power handling is decreased, etc etc etc. So, while it won't ruin the sub, it's not a good idea for the average joe to try it.

I wouldnt even tell people they can do that overall its a huge no no. Also with amps and SQ ive personally always found class a/b amps to be the best sounding especially when some of these new power amps ie JBL 1200.1 hifonics bx1500 and so on have an absurd THD.

 

[maylar 10+ year member]

Different speaker companies say different things about using only one coil. Kicker says it's OK as long as you cut the power rating in half. JL says don't do it, and Infinity says it could damage the sub. Proceed at your own risk.

 

[squeak9798 5,000+ posts]

http://www.adireaudio.com/Files/TechPapers/DualVoiceCoilDrivers.pdf - read the last paragraph on page one, and about the first half of page two //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Oh, and I like the idea of having a Qts knob //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif Might have to try it out someday.........

 

[sickmint79 10+ year member]

That may be your personal preference, but not a fact.

wrong, this is fact. just look at the specs of any amp and you'll see THD up immediately

 

[squeak9798 5,000+ posts]

wrong, this is fact. just look at the specs of any amp and you'll see THD up immediately

You said mono amps have better sound quality than 2-channel amps before you mentioned anything about bridging. Prove it. But regardless, bridged or not, prove that a mono amp sounds better than a 2-channel.

Plus, THD is a single measurement, and alone can not determine the "sound quality" of any amp. Damping factor, slew rate, channel separation (on 2-channel amps) and S/N ratio are just a few..........

And just because THD increases, doesn't mean it will be by enough to make an audible difference //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif Mono amps are *generally* class D, two channels are normally class a/b. Class D's *generally* aren't as "clean" as Class a/b to begin with.

But when most people run their subs into 10%+ distortion anyways, I highly doubt that a little inaudible change in THD is going to make that big of a difference.

 

[sickmint79 10+ year member]

well all other factors aside; i'm not saying a mono pyramid amp is going to have better sound quality than a 2 channel mcintosh amp. if you look at home amps mono is often preferred, i have seen a few systems composed entirely of monoblocks, some amps employ monoblock design internally as well.

 

[saywhat? 5,000+ posts]

The resistance (ohms) and the power is based in simple electrical engineering theory.
(think of going from a regular garden hose to one twice as big). Your amp puts out twice the power, provided it can handle it (and the electrical system of the car and install in general).

i believe your wrong.....more resistance in a hose structure = more pressure. a bigger hose puts out the same amount of water because it is the same pressure being released from wherever the water is sourced but the hose does not carry that pressure. (smaller hoses shoot water farther than larger ones unless pressure is raised to make the larger hose work harder to shoot the distance the smaller one does. there was a big thing on this i believe. now as far amps.....i believe its kinda the same....at the lower impedence it shoots out more current......sorta like the smaller diameter water hose. so if u comepare an amp to a hose the smaller dimater hose only compares to the diameter of the hose and how far it shoots......not the pressure being made, but the pressure being HELD.

correct anything that is wrong but im pretty sure im correct.

 

[sickmint79 10+ year member]

more "pressure" is always analogous to voltage... how much badly it's trying to push. if you want to think about water through hoses, then

voltage = water pressure

resistance = hose size

current = how much water is flowing through

 

[sungwei 10+ year member]

I run my Kicker L5 10" at 1ohm. I have an xtant 403a which doesn't say anything about running at one ohm. It just has specs for 2 or 4 ohm. I needed the power so I tried for one ohm. Been running it for months now without problem and sounds good. Sub is probably still underpowered though.

 

[sickmint79 10+ year member]

your amp is not capable at running 1 ohm then, even if some parts happen to tolerate it you do not have the kind of components behind it to back up the power you're trying to ask from it.