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It’s true that the factory rear deck speakers are somewhat unique, but It’s not hard to find low impedance 6x9s. 3 ohms is not uncommon, there's at least one high quality 2 ohm 6x9 out there, and in combination with high sensitivity, one ohm's difference isn't going to be a huge mismatch.
I've never seen a sensitivity measurement for the factory speakers, but given that the drivers are simple coated paper, I doubt they come close to the Infinity Kappas I’ve mentioned in an earlier post rated at 96dB (and just 2 ohms!).
It's important to keep in mind the relative system quality here. The AS3 factory system has a lot of strengths. Audiophiles obsess about minuscule distortion measurements in amplifiers, when a given quality home speaker adds several percent! The OE speakers sound good because the amp doesn't over stress them with more power or frequency range than each can handle. But the simple, low grade materials mean they are on the high side of distortion, which is going to have a much bigger impact on what you hear than an ohm or two difference.
I’ve had five 9-5s and tried a lot of different speakers. I still think JBL and Infinity are generally a great fit with the AS3 amp, but you can save $ with Pioneer speakers and they’ll be fine. That’s what I did in #4, and now in #5, I’ve just left the system alone. The sedans don’t have a ton of bass no matter what 6x9s you install in the rear deck. You can tighten it up quite a bit with stiffer drivers, bigger magnets, etc., but the output and overall balance is not going to be improved without a dedicated subwoofer and/or more power! If you just want to get rid of rattle and fuzz from deteriorated surrounds, refoam as others have said is easy enough. Posts in this Thread:
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