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Home speakers with car receiver possible?

Hello everyone, I recently purchased a new to me but used tent trailer. I realize were coming to the end of the season but I wanted to get a bit of a Headstart for next year! We like to have a little bit of music when we’re camping. I have purchased a set of 4 ohm marine speakers (JVC CS-DR621MWL) that I will be installing into the side of the tent trailer facing outward to the ‘patio area’. I also purchased a JVC car receiver. I would like to have some music inside the trailer, for mornings, evenings and even rainy days. 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?

Looking for ‘sound’ advice. I’m already ‘guessing’ about adding some sort of resistor but unsure if that is the proper method or even how to do it. No ‘guessing’ please!!!
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b_limo's avatar
b_limo
2,274 posts
 
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!


auxinput
2,920 posts
 
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.
imhififan's avatar
imhififan
2,182 posts
 

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.
toiler OP
5 posts
 
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
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