Your amplifier has WAY WAY more power than you need; that is certainly NOT the problem.

The problem is that you are ignoring the laws of physics...lol.

The tiny little drivers of your Sunfire speakers are way too small to move enough air to get more volume. You have way more power than they can convert to sound. More power will accomplish absolutely nothing.

As the name says, these are SATELLITE speakers; not intended to be front main speakers!! That should be a very strong clue as to their limitations. You will note that Sunfire does not even give a maximum SPL spec fpr them, which should be another clue...lol.

You need to get some front speakers that have main drivers that are AT LEAST 6 inches in diameter. 8 inches would be better.

That will more than double the cone area and solve both of your current problems; not enough volume and not enough bass extension from the main speakers.

Your current front speakers only go down to 95 Hz, and that is also inadequate. That forces the subwoofer to operate up to 100 hz, which means it is doing too much of the work and your sound is MONAURAL up to around 100 Hz, which really compromises your sound. Front main speakers should at least go down to 60 Hz IMO.

If you want to stay with Sunfire products, the CRM-2 bookshelf speaker claims to deliver up to 115 db with two woofers instead of only one, but it still only goes down to 95 Hz, which is a problem. Getting a pair of those would probably solve your loudness problem, but you would still have a deficiency in the mid-bass.

I strongly recommend a pair of good bookshelf speakers like the Monitor Audio Silver Series 2, which has an 8" main driver. That would an excellent solution. They are around $1000.

The Monitor Audio Silver Series 2 are around $1000 from Audio Advisor.

I suggest that you get a pair from them and try them out. I think you will love them.

You have 30 days to return them if you decide they don't suit your system.

You do have to pay return shipping if you decide to, but that is a small price to pay for a thorough 2-3 week trial of some very nice speakers.

You might just decide to keep them, and that would eliminate that issue.

The NHT Absolute Zero Monitors speakers are pretty small, but have good perfprmance and are sealed acoustic suspension speakers, which are perfect for putting on an enclosed shelf (no ports).