what does "Re" impedance actually mean?

[Highs on bass]

i'm considering running 6 of those hfi hifonics 12's myself in a wall in my truck. That or the RE line of RE Audio

 

[orangecounty1 10+ year member]

the hifonics for 35 bux each shipped are very good budget subs... deff good for a multi sub setup.

 

[audioholic 5,000+ posts]

so if i buy one of those, and i wire it in parallel, my amp will see 3 ohms, not 4?

What ciaonozo is trying to tell you is, your amplifier will see different loads depending on the conditions. Speaker impedance varies as the cone moves, because resistance changes depending how far out of the gap the voice coil is. Therefore, actual impedance the amp sees depends on the frequency the speaker is playing, and the amplitude, as these both affect cone excursion (and thus, coil to gap relationship). Measured/advertised impedance is with the cone at is centered (resting) position, which of course it will not maintain while playing music.

 

[Scoobydoo 5,000+ posts]

You will learn after your amp frys and/or takes out your subs

Driving a 12" a 1.5ohm sub is much different than driving the 6.5 mid woofer that came with that setup

Even the most high end home receivers/amps are only stable to about 4ohm and the one you are considering using is far from high end. You should really do some research before you waste your time and money

 

[jmanpc 5,000+ posts]

Resonant Engineering.

zomg. //content.invisioncic.com/y282845/emoticons/viking2.gif.35c13a457368016b956ccf693af31291.gif

 

[orangecounty1 10+ year member]

You will learn after your amp frys and/or takes out your subs
Driving a 12" a 1.5ohm sub is much different than driving the 6.5 mid woofer that came with that setup

Even the most high end home receivers/amps are only stable to about 4ohm and the one you are considering using is far from high end. You should really do some research before you waste your time and money

i already own it. i know its far from high end.

why does the specs state the amps sub output is 285w rms @ 1.5 ohm if it cant handle 1.5 ohm?

 

[timaishu 10+ year member]

i already own it. i know its far from high end.
why does the specs state the amps sub output is 285w rms @ 1.5 ohm if it cant handle 1.5 ohm?

Because they lie? I dunno, I have the JVC THD50 htib and it says in the specs that each speaker gets 200rms at 3 ohms. Load of bullshit, no way a lil 3 inch full range paper cone will handle that much. Yes, I know it wouldnt see that under normal usage but still. I hardly believe it to be anywhere correct..

 

[PV Audio 5,000+ posts]

Yep, as I told you, Re is just the DC resistance of the coil. As frequency changes, the impedance is the sum of the resistance plus a complex portion called the reactance. The higher the frequency, the higher that portion, and thus the higher the overall impedance. The reason you can't use Re as a main figure is because as I told you and ciaonzo repeated, unless you just have your speaker hooked up to a battery, it isn't a useful number. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[orangecounty1 10+ year member]

ok so basically what im getting at is, when choosing a new sub/subs for this receiver, what should the overall load be on the new subs.............