1.333 ohms to a mono amp

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nodiggie

Copper - Posts: 69

Joined: August 19, 2009

Location: California, United States

Posted: October 09, 2009 at 1:05 AM / IP Logged

Yeah, it sounds dumb I know.

My plan is to replace both current subs with new but can only afford 1 right now. So what would happen (good/bad) to a mono sub amp if you tried to wire a 1.333 ohm load to it?

I can wire it 2ohms with no problem but could also wire it

( 1ohm + 4ohm).

Will this 1.333ohm load give my amp a heart attack ?

Just my brain working overtime with all the endless possibilities.

Still learning

Kraco

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i am an idiot

Platinum - Posts: 13,667

This member consistently provides reliable information

Joined: September 21, 2006

Location: Louisiana, United States

Posted: October 09, 2009 at 5:11 AM / IP Logged

1 Ohm + 4 Ohm paralleled is (.)8 ohm. Any time 2 resistrs are paralleled, the result is always lower than the lowest value resistor of the pair.

We can only guess that your amp is stable down to only 2 ohms. If that is the case, running it anywhere below 2 will be a judgement call that you will have to make on your own. Would you double the recommended load on your pickup truck? If your car redlines at 8000 RPM, would you rev it to 12000 before you shift?

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haemphyst

Platinum - Posts: 5,054

This member has been recognized as an authority in Electrical Theory. Click here for more info.

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Joined: January 19, 2003

Location: Michigan, Bouvet Island

Posted: October 09, 2009 at 1:30 PM / IP Logged

^^ that, and...

The 1-ohm load will pull four times more power than the 4-ohm portion of the circuit, and if they are close to the same sensitivites, then the 1-ohm driver will be 6dB louder than the 4-ohm driver.

Impedance aside, paralleling inequal impedance drivers within the same frequency band is generally... no, ALWAYS a bad idea.

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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1.333 ohms to a mono amp

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