Home speakers with car receiver possible?

You can add a resistor, sure. All it will do is turn the volume down. Much easier to just turn the volume down I would think. 

The receiver will be fine with those speakers. Just hook em up and enjoy. There is nothing like the sweet sounds of nature washed out by car audio. Of that I am certain. Why else would people drive to the woods but to turn it into what they had back home?

I appreciate that you have your own opinion. I think a bit of quite classical music in the evening or being able to hear a news broadcast is relevant and valuable, for me anyway. Cheers

If you read the earlier message, ,and don’t get the sarcastic humor, maybe I need to buy you a Modelo?

  Yes, that will work fine. 
Smile more, silly. 

I have been thinking about perhaps installing a set of Polk Atrium 4 speakers. These however indicate 8ohm resistance. I think the JVC car receiver (KE-X840BTS) would prefer lower ohms?
What can I do?

8Ω speakers are OK to connect to the JVC car receiver, but it can't provide volume level as loud as 4Ω speakers, you can turn the volume control up to compensate.

I’m sure 4 ohm speakers will push the head set to it’s max. The 8 ohm speakers will be a bit quieter. No resistors needed. You have the installation instructions? It will give you the minimums and maximums ohms.

Need an A/B switch for inside or out.

I suppose you could use the fader option. Fade the outside to ZERO for the inside to work on it’s own, otherwise all 8 vs 4 inside.. OR the A/B switch option..

If you’re going to do a marine install remember the ground.. Keep it large enough and every joint use sealing butt connectors. Don’t cheap out.. 12 vdc can drive some very good home electricians nuts. Remember marine depends on the actual wire to carry the ground.. Don’t bond to a common lug or frame marine requires a ground for every circuit and that circuit directly to the 12 volt battery ground.  Marine requires that.. automotive does not.. the frame is common in automotive along with the firewall, to the ground lug.. it’s different..

Low voltage with potential high amperage and green connection don’t work well.. That can happen in one season of setting.. Use protection on the DC supply, keep battery terminals clean and treated with corrosion inhibiters and contact enhancers..

50 years of cleaning batteries. I’m pretty good at it.. :-) LEAD Contacts... NoCo is one of the best.. Red terminal pads and red contact spray.. Wipe off the excess, don’t drench it without wiping after. It’s good from -80 F to 200+ F

Enjoy

Arcticdeath, I will take the Modelo!!!

Imhififan thank you!

Oldhvymec, I will take awareness to the next level on my install, being sure to adequately ground and ensure all battery connections are soils and protected from corrosion. 
Thank to all; I’ve ordered the Atrium speakers from Am azon. Cheers

MC is totally mixed up. What a shocker!
 Auto electrics are made for 4 ohm. 8 IS like adding a resistor. It's usually an easier load for the amp. You might not even notice a difference.
I put my first 10" home speakers in my Scout Traveler. They sounded fine. One day while a.t work a thief broke out a window and pilfered them. Luckily he ignored the lb. of weed in between them. 

As you say fuzz tone, I thought from my reading of online forum information that the lower the ohm number then harder it would be on the receiver or amp. 

True bud. You'll have no problemos.  
Good luck to ya.

Yeah, pay no attention to the speaker designer demonstrating exactly what I said. https://youtu.be/tMAO9LPsups?t=290

welcome to the forum @toiler...

I appreciate that you have your own opinion. I think a bit of quite classical music in the evening or being able to hear a news broadcast is relevant and valuable, for me anyway.

and brace yourself for certain participants who enjoy telling others what their life priorities should be and how best to spend your time.  

Three easy payments,
Thank you for your welcome to the forum and a bit of humour. You are right, I was not really expecting some of the response I received but that’s okay…everyone is entitled; some more than others

You could always grab a pair of Aiwa EXO9 portable, battery operated speakers.  1 by itself is good but you could blue tooth 2 together and be rocking out some serious Beethoven!

Okay, technical answer here.  Like others have said, putting an 8 ohm speaker onto a car deck will work just fine.  I actuality, the car deck power supply does not have to work as hard.  That JVC deck will output 22 clean watts per channel into a 4 ohm speaker.  However, the deck will only be able to output 11 clean watts per channel into an 8 ohm speaker (half as much power output due to resistance, but less strain on the power supply).

That being said, the Polk Atrium are actually 3 db more efficient that those JVC marine speakers.  The JVC come in at 86 db sensitivity.  The Polk Altrium 4 come in at 89 db sensitivity.

It could very well be that you won't notice a volume difference here.

The JVC come in at 86 db sensitivity. The Polk Altrium 4 come in at 89 db sensitivity.

An off topic question, is there any standard method for measuring speaker sensitivity? The reason I ask is I notice some speaker manufacturer stated their speaker sensitivity much higher than stereophile magazine JA's measurement report.

Thanks everyone for your help. Appreciate all taking time out of their day to get me through this learning curve. 
Auxinput: you and a few others have nailed it. The Atrium’s arrives today. Tomorrow I will install the JVC marine speakers into the side of my tent/pop up camper trailer and then we will test!! 
Pics and video coming. 
Cheers