I've got a phoenix gold octane-R 5.0:1 amp.
I am using it to power my phoenix gold octane-R 10" sub
(not brand loyal, a good deal is a good deal)

Now my amp hasn't arrived yet, but i have finally started to find some
true wattage ratings of my amp (not the ones on the phoenix gold website which are absolutely useless), and i think the sub will be underpowered.

My sub has a 4 ohm voicecoil, however when i hooked it up to my multimeter, my sub came out to 3.6 ohm's.

Here is where it gets complicated, if i hook up any old 4 ohm resistor in parallel with my sub, it will a lower resistance in the circuit. Approx. 1.7 ohms. Effectively doubling the power draw from my amp.
Now because the current is lower on the 4 ohm's path (it should draw less power), will the sub's path receive slightly more power??

Is this possible?? Or am i crazy??

Also is this even necessary, do you think that the amp will supply enough power to the sub??

Thanks in advance to all of those who may read this and try to help

It's my first post

Sincerely, Ichifunbum

 

hi, welcome.

3.6 is normal for a 4 ohm sub.

lowering impedence, like 2 subs in paralel, will increase power from your amp.
less resistance, more current. if the amp is rated for 2 ohms, you'd get almost double power total, each subs gets half power.

 

Thanks for your reply TomF1,

so if the circuit resistance is cut in half, the circuit
draws twice the power from the amp.

However will that doubled power now be distributed evenly,
50/50, or will more power be given to the sub which is rated
at 3.6 ohms compared with the resistor on the other path at
4 ohms.

Or what i mean to say is, will i get slightly more than half of the
doubled power to my sub, compared with the resistor that i run it
in parallel with. Like 55%(sub)/45%(resistor), or even 60%(sub)/40%(resistor).
Less resistance more amps, more amps more wattage.

So if my amp is rated at 150 W RMS @ 4 ohms, maybe i can squeeze
out 170 W RMS using this method

Also, do you think that my amp could power my sub with no need to
try this parallel circuit?

Thanks again, Ichifunbum

 

NO NO NO NO NO
DON'T run a resitor with it.
I said youd get more power out of the amp with 2 subs, not a resistor.

All you'd do with a resistor is WASTE power, turn it into heat.

How big is your 4 ohm resistor? 150 Watt? And i don't get why you'd want to run more power if your just going to burn it up?

You need a bigger amp.

 

roger >o</

Ok gotcha loud and clear, thanks for all of your help TomF1