Matching speakers to Fusion MS RA55 Stereo

[Quinny4870]

Hi team

Looking for advice on matching speaker wattage for Fusion MS RA55 marine stereo. Unit output is 4 channels at 45W @ 4 ohms, only installing (2) 2 way speakers though.

Would 2 x 200W 6in speakers be appropriate or 2 x 260W 7in speakers be better? Or would I not be achieving anything more than installing 2 x 120W 4in speakers?

Thanks in advance.

 

[dingbat]

Depends on the efficiency of the speakers in question, but I have to ask.... why are you looking at 200 W speakers when your amp has only 45 Wl?

I'm using Poly Planer MA7500 box speakers on my boat. 100W per pair matched up to a 50W per channel amp

 

[Quinny4870]

I am looking at these as they are the Fusion range available in store.

The listed efficiency of the speakers in question are 4in/120W 87dB, 6in/200W 90dB and 7in/260W 91dB.

Will there be any increase in quality of sound and volume by using a pair of the 6in or 7in speakers over the 4in speakers?

I was also wondering if the max output of unit is 180W over 4 channels, will that end up being 90W per channel if only two channels are used?