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tschanrm, or chuyler1, I have four questions: 1) Why is polarized electrolytic type capacitor suggested over non polarized? 2) My amp (RF 200a4) has "sensitivity" between 250mV and 4V and a 20kohm input impedance. I calculate a -3dB at 20Hz capacitor value of 0.96uF. Is this correct? What do...

I've done the heat and force components into holes many times - never works perfectly, but always tempting to try. I am sure you can fix this...don't bother getting another. There are two ways to remove solder that I know...one is with a solder wick, and the other is with a solder pump. I...

CD-R playback issues are usually a media issue. If it doesn't play at all, maybe it's not closed or it's a really bad disc. I have purchased many brands of media and have found that cheap generic discs will either disintegrate early or not read well in many players (hear static and skips). Good...

Don't forget about rollovers! Ford underinflated there tires to reduce rollover rates (and i'm guessing this sacrificed mileage). Too bad for them, they picked Bridgestone Wilderness AT tires that would overheat and delaminate at highway speeds - probably due to the the constantly flexing...

So I just put in a little old rockford fosgate four channel (200aIV or 200a4) with the after market stereo that came in my car, and everything works fine. Now I want to swap back to the stock radio with the RCA out mod. Is there any way to make sure the amp is only on when the stock radio is on...

Liquid deadeners I have read that the liquid deadeners can be very effective - and i think you get more square footage per dollar (depending on how thick you lay it on). I personally don't have any experience with them, but I plan on getting some soon. Examples: QuietCar, Second Skin Spectrum...

I recommend you read the HowTo! Search for "How To: Replace Headlight Bulbs" in Mazda Forums > General Tech > How-To. They are definitely tricker than I thought they would be. Also, my personal lightbulb recomendation is to stick with the OEM replacement bulbs (I have Sylvania Halogen from...