In parallel the amp will see a 2 ohm load and each speaker will only get 75 watts from that amp. They will be sharing the 150 watts the amp is capable of. To wire them that way you just take the positive from 2 speakers and twist the ends together and plug into amp. Do the same with the negative

 

Well at 75 watts a piece at 2 ohms that seems like a lot of power/wattage loss to the speakers don't you think? and one of the reasons for buying the Arc 600.4 originally considering they were each getting 150 watts per speaker at 4 ohms?

 

Resistance is a load that is seen by the amp, not an output, but the wiring info is correct. The amp will see a two ohm load, not four. Due to the electronics of the ARC amp it still holds at 150 watts though. Typically with a lower resistance load more power will be dissipated, that is why most amps deliver more power with a two ohm load than a four.

If I remember correctly one way to determine wattage is voltage squared divided by resistance. If you divide V squared by a lower number (2 as opposed to 4) you get a higher number of watts dissipated.

 

Most amps produce more watts at 2 ohms. That one unfortunately does not. It is a solid 4 channel amp for 4 speakers. Any more than that you generally need extremely efficient speakers for that akp to handle more

 

I would still try it and see how the front sounds to you before looking into different amps.

 

Yes that is a lot of loss. If you have one speaker on each channel of that four channel amp they will all get 150 watts. However if you run two speakers on each channel (the front two outputs) then yes it will drop to 75 watts each for the front four speakers on that amp.

The good news is if you run the four front speakers in parallel 75 watts each might be just enough since they are right in front of your face. That leaves 150 watts each for your lids which with the RF 6x9s would be plenty. I am getting good sound out of them with only 120 watts.

As others have mentioned I think it would definitely be worth a try. If you don't like the volume you are getting out of your lower speakers you could always put the front stage back to the way it is now and get another good two channel amp for the lid speakers. Maybe a micro amp in the fairing or if you want big watts you could go with a Cerwin Vega B52 in the bags maybe. If you get to that point the more experienced folks could make a good recommendation.