By doing so, we’ll end up with two 8 ohms measurements in parallel which will give us a nice, safe 4 ohms per channel! It would help to know what the difference is you’re hearing between what you have now and the factory speakers. – If you absolutely must use all 4 speakers and drive everything from only 1 amp, you’ll have to give up the front/rear fader control as I mentioned in my article. If in series (amp - to - 1st sub, + 1st sub to - 2nd sub, + 2nd sub to + amp), you get 8 ohm load. Also, I have a 4 channel amp and a sub and i want to have 2 front speakers and i sub. L & R Rear and 2 for the sub. Some factory systems make it hard to find a +12V standard wire. The speaker impedance or “Ohms” rating of a speaker (also called the speaker load) is the resistance to the flow of electrical current that the amplifier sees at the speaker terminals. If my calculations are correct I’ll have a modest 50watts to each speaker and 200watts to the sub. 1 & 2 on the amp for that. Here’s a suggestion to start with regarding the front & rear speakers: As the Civic is supposed to use 6.5″ speakers, here’s a 4-speaker set of Polk DB651 coaxial speakers with silk composite tweeters that will give very nice sound. – Connect the 2 subwoofer RCAs from the Sony to the amp, let’s say ch. The little amp can’t run below 4 ohms. Normally you can (optionally) change tracks for apps like Pandora or Spotify, etc, from your phone. Below is the specification of the amp. To measure the Ohms (resistance) of a speaker’s voice coil, hold the meter probes to the speaker terminals, making sure to keep firm contact to bare metal Paint, insulation, dirt, and solder flux can mess up your reading otherwise. Pimpster, Ty is right. It’s easier than using crimp (“butt”) connectors or other methods, plus you can change it later if you need to without any problems. – For sure, make sure all the speaker connections are wired the same way (each speakers positive and negative connections are the same from the amp) or you can have cancellation which hurts the sound a lot. Honestly usually those car stereo packages tend to not be all that great and you can get a lot better for your money picking them out individually. Things like the following can cause problems (I have seen this happen many times! : Use only ONE of the two connections shown. So if I do Option #1, impedance will be 2Ω. Copyright © 2017-2021 SoundCertified.com. Yes the remaining stereo channels would be whatever the specs list, which is 130W RMS @ 4Ω each channel. 2 speaker-level inputs. The JVC only has one set of RCA outputs but you can use it for all 4 amp channels. Old coustic 2 channel amp to a speaker box in the trunk,it’s a box with 2 -10” Speakers with tweeters I want to use as a (sub) so to speak. However, as crazy as it sounds, some speakers don’t! Why is this best for driving a subwoofer? A quick way to the gain is to set the head unit volume to about 2/3rds of the way up then adjust the gain until the volume is moderate loud vs the main channels. It sounds to me like I’m over doing it. I also replaced the 4 door speakers with Pioneer TS-A652F 6.5 3 way speakers, and a kicker pt250 BassStation 10″ powered sub. Hi Marty, my radio has rear and front channels (4 in total). Set the multimeter to the Ohms setting. car stereo to a 4 channel amp, Additional suggestions & parts you may need, How To Install A Subwoofer And Subwoofer Amp In Your Car. Hi Steve, yes you can do that if you like without any issues, aside from the volume which you’re already aware of. That amp will run real hot at a 2 ohm bridge, so what you need to do is wire those voice coils in "series" then bridge the 2 channels to each sub. Pull it through and unhook the wire hanger. I just got a Pioneer head unit and a 2 channel power amp 400.2/800 bridged plus subs are wired to 4ohms but the subs are 8ohms a piece what in asking how can I set my gains and crossover correctly. If you’re wanting to install a 4 channel amp for 4 speakers and a subwoofer but only have 2 stereo channels available, that’s ok. As shown in my diagram, you can connect 2 channels to a 4 channel amp using either the speaker level inputs wired in parallel or by using RCA “Y” adapter cables. One more question. 8″ subwoofers are an option or a dual 4 ohm voice coil subwoofer could be used. Is it possible or feaseable to add resistors to the woofer, like you suggested for speakers running on a 4ohm minimum load amplifier? If so you’ll probably want to connect those or replace with aftermarket ones & add them too. (For example “1000W” may actually be only about 250-300W or etc). Very informative description for the 4 channel amp and bridged sub. Read the measured value. Additionally, I see that the Kenwood head unit has subwoofer outputs so you may be able to turn that signal down as well. In this case it would help a lot if I knew the model number of your amplifier so I can look into it. Would be all highs with a little bump in the back ground You didn’t specify the amp model so I’m not sure which one you have.). Is thicker sub wire better in car speakers? In this case, you should be able to connect the line-level adapter to the Kenwood amp’s speaker outputs to get a signal if you like. Perhaps the sub is blown. The two channels amplifier is designed for running just that. How actually can i install them so that i can get loud and also best sound quality. You name it. Hello again, Saptarshi. 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