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Why can't the signal to the OEM sub amp be used? The Polk sub is rated at 90wpc at each coil, so the Rockford Fosgate Punch P300X2 would be a good fit. I can't say whether it will get noticeably louder without knowing the rating of the OEM amp. It takes double the power to get a 3dB increase...

You can use the sensitivity number along with the power rating (100w) to give an idea how loud the speaker might get, but there are other considerations. They don't show at what frequency the sensitivity rating was measured. It could have been obtained at 1000Hz, likely outside the operating...

I honestly don't know what kind of music my car prefers, but it hasn't complained yet when I play classic rock.

What did you start with, the base system, 9-speaker Shaker or the 12-speaker Shaker?

The load the amp sees is called impedance, measured in ohms, and a mismatch (e.g., 8 vs. 4 ohm) between the speakers and amp has nothing to do with your issue. Speaker impedance is simply a nominal figure and is frequency dependent. If your amp is rated at 100 wpc @ 4 ohms and your speakers are...

You would be correct that it's about twice as loud (assuming the numbers are accurate). So that people don't misunderstand, a 10dB increase is twice as loud. Corsa is essentially correct with their data. 9dB is not even close to 3x as loud. 3dB increase is just a perceptible increase in SPL.

There remains conflicting info. If all of the processing is accomplished in the OEM amp and yet the rear speakers still have low-pass filtering, then not all processing is happening in the amp. Perhaps the ACM has some DSP responsibility (as Jesse/OEM stated some months ago). Does anyone know...

Which Utah dealership?

Given that there's no distortion at max volume, the only other option is to turn up the sensitivity on the amp(s). Other than that, buy speakers that get louder (max SPL), assuming they are appropriately powered.

Mid 50s Technically I'm on my 2nd Mustang. My first was a '78 Mustang II with the weakest 4 cyl motor ever. It's difficult to think of it as a Mustang because it looked and drove more like a Pinto. :D I shouldn't complain too much, though, as I got it for only $126. I put 35k miles on it and...

Good to hear. :thumbsup:

Does the shop know you're paying out of pocket and not going through insurance? If not, ask them what the cash price is for the repair. I don't know if it's the norm everywhere, a regional thing, shop thing, or what, but shops in my area significantly mark up the price when it's an insurance claim.

Any speaker, cheap or expensive, can fry in no time given enough power (voltage). The stock speakers can last you as long as you desire. The point is to keep from driving them with too much voltage.

Hmmm...never saw that sign before. I like driving that canyon except when I get behind really slow drivers. The scary part of driving Ogden Canyon are the drivers coming the opposite direction who can't stay out of your lane. Going that way gives me a good excuse to stop for ice cream at The...

Mike, I know you clearly acknowledged that SPL measurements were conducted using some controls and conceded the less than idea testing location. I would suggest to anyone considering their own testing to measure in an open space (half space) to avoid room modes. I'm curious to know what...

The best drone I ever owned was a Flowmaster. ;)

Are the signals encrypted?

This is how I would connect the sub to the amp. It's on page 12 in the manual.

If that's available, I'd grab it. I love it.

I noticed how much of a smile it put on my face. Still does. Other than that, the car gets a lot of attention (double-takes), positive comments from people in parking lots, and the occasional kid who wants to race.