Question about Pioneer TS-W256C Car Subwoofer

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Amp turns off or goes to protected mode during long low base

On some songs with deep low base my amp will switch to protected and i will have to turn off my cd player and turn back on for it to start playing again. It doesnt do it on all songs, it does best on songs with short burst's of base Do you think i just need more power to my amp or is it the subs cant handle the base

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Re: Amp turns off or goes to protected mode during long...

Let me take a stab at it There are two types of resistance... Static and dynamic. These resistance change depending on the position of the cone. Now im guessing the short bursts of bass are not small ones. If the cones are forced further than allowed the resistance of the combinded drivers may drop below the rated impediance for the amp...causing the amp to into protection to keep itself from over driving itself (the less reistance a amp sees the more power it will produce, till it essential blows itself up)

Posted on Mar 25, 2007

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I recently installed the Alpine iDA-X100 model and I am having difficulties with my sub and amp. It works perfectly fine when it's on radio mode, however as soon as I switch it to Ipod it turns my amp...


Initially, determine if the remote trigger of the amp is present on both instances; radio and iPod. This would be the blue or blue/white wire from head unit and would read +12VDC when the head unit is turned on. Otherwise, if +12 is present during radio mode but absent during iPod, then it might be that the internal switching would need looking into or a short temporary fix would be to wire a separate power on toggle switch for the amp.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

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My buddy had a sony x plod 600w amp in his car pushing two 12's. he sain it never gave him one problem. he sold it to me and after i turn my truck on it has power. it even works fine until i turn it up to...

Make sure the ground is securely fixed, power cable too. Also check the ohms of each speaker and the output of the amp. If you have two 4 ohm subs (2ohm load) running of the bridge of that amp, it aint gunna work. Im sure that amp can only run 4ohm. Try not bridging it.

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Amp goes into protection mode when i turn up volume

Sounds like you are running your subs at to low of ohm. Amps are rated differently on the levels of ohms or resistance that they can get to. If you have a dual 4ohm sub and run it in pairrell it will drop to 2ohm and if you run the same sub in series it will be 8ohm. Your amp will go into protection if the ohm is to low.


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Its probably not your subwoofer- its likely that your amp is showing its age after 2 years of bumping -But it could be that you have partially roasted the coil on the sub which is tripping your amp into protect mode-thus shutting down throw a different sub in there for a week and listen to it and if it stops acting up then its probably the sub if it still shuts down then it may be time for a new amp

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may be the inpedance is too low , poor current...i try to change a wire alimentation for one of number 4 ...and screwed gnd! gd look!!

Mar 16, 2007 | Pioneer TS-W256C Car Subwoofer

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