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Old 06-26-2010, 10:51 PM
PaulD PaulD is offline
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Re: Amp goes into protect mode when volume is turned up

Quote:
Originally Posted by nitbolta View Post
Two ohm is almost like having short circuit so the current increases. That is why is entering in protecting mode. If you connect a resistor on parallel with you subs the real value send to the amp is equal to (sub-impedance*resistor-value)/(sub-impedance+resistor-value) so the real impedance is diminished. Check the manual of your amp to verify what is the minimum output impedance allowed.

He says the amp/sub setup works in another vehicle .. I don't think that's the issue here but the lowered impedance of the subs will cause it to draw more power from the amp.

To the OP .. in real terms, if you halve the impedance (say from 4 ohms to 2 ohms) the sub will attempt to draw twice the power. Lowered impedance is a BIGGER load. Also the bass boost and gain stuff can be demanding. Sound is logarithmic not linear, so 3 dB requires twice the power - 10 dB (a doubling of volume) requires 10X the power.

here is the contact link for them http://www.splusa.net/CONTACT.htm
email tech support and see if they can send you a manual

You might want to swing by autozone and have them check your alty and battery to make sure they are still up to par. If you replace the b att and the alt is bad it will wear down the new batt too.
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