Car Stereos: should or can i bridge, hifonic, channel amplifiers

Question
i have 2 hifonic  dvc subs and a 1000 watt amp.
i heard you should not bridge dvc subs but not sure if its true. if i can bridge them will i get more out of them?
They hit hard now they are in a 97 civic facing back of the car (tag) area and are real close to the trim, should i move them back? or face them towards the front of the car or just leave as is? but i  still want to know about  bridging them and the + and - of doing so?

Answer
Hi Robert,

I think you're misinformed about the term "bridged".  In car audio, "bridging" means combining two amplifier channels into a single channel with more power.  It's something that's only done with multi-channel amplifiers--not subs.

If you're asking how you should wire your subs together to the amplifier, then that depends on the impedance rating of the subs, and the power and minimum load impedance of the amp.  You can choose to wire DVC subs with the coils in parallel or series; either will work.  The goal is to get a final impedance rating that makes the most effective use of the amplifier.  

If you'd like to follow up with the brand and model number of the amplifier, together with the model number and impedance rating of your subs, I can tell you the wiring setup that will get the most out of your amplifier and subwoofers.

Provided that the subwoofer cone doesn't have any chance of bumping into the vehicle trim, there's no harm in leaving them like they are; but I'd be sure to fasten the box down so that there's no possibility of it sliding around.  You can experiment with different placement, and see what sounds best to you; but the deepest bass tones aren't usually affected much by the box placement, and the output won't be reduced by being placed close to the rear panel.

Hope this helps!

Brian