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    • Hi everyone, I'm looking to upgrade my setup for the first time and have some questions.  I'm not an audiophile (maybe yet, haha) but I do love music and want it to sound reasonably good, considering price. But I wanna start with something basic and go from there. My plan is to buy the parts and get a local shop to install everything. Hoping to keep it around $500 (I'm Canadian but using USD to presumably make it easier for people here) all in if possible.  I have a 1997 Honda Civic CX. There's an aftermarket Kenwood deck in it but its old and I'll be replacing it. Beyond that there's 2 stock speakers in the back, and none in the front, just the plastic things that look like speakers, which I found kinda odd.  So onto the questions. How many speakers do I actually need? Can I just get a new deck, 2 speakers, and a powered sub and call it a day? Or do I need 4 speakers? The first scenario seems more convenient, because if I understand correctly (correct me if not), I can only plug in 4 things to the average lower-end deck. 4 speakers plus a sub would require me to get an amp, yes? Prefer to not go down that road if possible for budget reasons. Can I get 2 new speakers and keep the existing rear ones? Would that sound bad? Examples of components I'm looking at: Heads: https://www.crutchfield.ca/p_105KDX360B/JVC-KD-X360BTS.html https://www.crutchfield.com/p_130DS5120B/Pioneer-DEH-S5120BT.html Speakers: https://www.amazon.ca/Pioneer-TS-F1634R-200W-2-Way-Speakers/dp/B0081SRIFS/ref=sr_1_5?keywords=car+speakers&qid=1560738414&s=gateway&sr=8-5 https://www.amazon.ca/Kicker-43DSC6504-Coaxial-Speakers-DSC6504/dp/B01BLVEVNS/ref=sr_1_4?keywords=car+speakers&qid=1560738414&s=gateway&sr=8-4 https://www.amazon.ca/Rockford-Fosgate-R165X3-6-5-Inch-Full-Range/dp/B00BF6HWCM/ref=pd_sbs_107_10?_encoding=UTF8&pd_rd_i=B00BF6HWCM&pd_rd_r=fd3d6628-913e-11e9-a19e-076b366cd722&pd_rd_w=kgvev&pd_rd_wg=T8GM0&pf_rd_p=5dcda75b-8643-4da3-9bb1-5c0233790500&pf_rd_r=VZNPG9H461JQCD2FM8N0&psc=1&refRID=VZNPG9H461JQCD2FM8N0 Subwoofer: https://www.amazon.ca/Rockville-RW10CA-Profile-Powered-Subwoofer/dp/B019Z3R582/ref=sr_1_3?keywords=subwoofer+car&qid=1560738464&s=gateway&sr=8-3 (looks like it just sold out) https://www.crutchfield.com/p_777B8P/Sound-Ordnance-B-8P.html   Will appreciate any help. Thanks!
    • I still have a couple 2005 RE XXX's and the original xbl^2 XXX 6.5's around here somewhere. Ah the good old days...
    • In a 4th order bandpass, all the output comes from the ports, so the direction the driver faces is irrelevant.
    • Im not familiar with the Kenwood h/u the OP has, but it is no longer safe to assume h/u amplifiers only put out 15-20 watts. Some h/u's come with a MOSFET amplifier these days and actually can put out close to 50 watts per channel, and I consider a great option for people just dabbling in car audio and dont want a dedicated external mid/highs amplifier.
    • Keep in mind that just because our ears lose stereo separation at lower frequencies does not mean the recording devices, and playback devices, also lose it. If in doubt, its pretty easy to sum your audio signal pre-amplification. There really is no reason to ever run subs in stereo, because as you say, our ears wont hear any advantages, but there could be disadvantages in the reproduction (wave cancellation affecting output response).

      edit: this is of course assuming you are running a true subwoofer system, and not one that your system also relies on for midbass, which I wouldn't recommend either due to localization issues.
    • No, you are not doing okay as long as you stay above 12 volts. Most healthy batteries will be above 12 volts when fully charged, and an alternator is ideally bringing your voltage up to 14.4 when the system/vehicle draw does not exceed the output of the alternator.

      I assume we are talking about a daily system, as opposed to a competition system where you are trying to maximize the output to tenths of a db. In the case of a daily driver system, basically as long as you never need to use jumper cables to start your car, its sufficient. This is because everyone's listening habits are different. How often you play the stereo while the engine is on, how loud you play it, and even (sometimes) the genre of music you listen to can affect the average-over-time draw your system puts on the charging system.
    • Thanks but Im asking a more broad question than what you personally are planning to do.
    • What is your goal? Are you trying to block/absorb noise, such an engine or road noise? Or are you mass loading panels to lower their resonant frequency?
    • I don't plan on doing a 5k+ watt build on a fully electric vehicle anytime soon so I am not worried about it.
    • You didnt list what speakers were used, but if they are a component set they should have come with passive crossovers. And again you didn't list what ARC amp you have, but it possibly has a highpass filter which should block unwanted frequencies.
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