I want more bass…

Yesterday I did a few things

1. Got my subwoofer working again I’m not sure why there was no sound out before. Something to do with the AVR settings. 

2. Ran Audessy again across the whole system setting front horn speakers to large

3. Ran bass heavy music from Tidal and SACD

4. Made sure the ARC D240 MK II was connected to play the front horn speakers. It rated at Power output. 120 watts per channel into 8 ohms, 240 watts per channel into 4 ohms ; Power bandwidth. (-3dB points) 8Hz to 60kH. The speakers are rated at 98dB.

This has raised the level of bass in the system and room. It’s a three sided room. It’s enough for me as it reaches deep and has some good thump. I think it could do more. 

These speakers are not biwirable. Eventually I’ll get to swap out a better preamp. I do have an LS10SE that’s allocated in another system. This is a problem of two systems in one. A stereo music system and a movie system. Previously I ran these separately. Now in my living room where the horn speakers are located, I need a movie system. And same in my HT too. The issue is the same speakers are used for both systems. 

Still think need more powerful amp. However, 98 dB speakers are easy to drive. My speakers are like upper 80's or low 90's. Can understand why you have 120W/ch amp. So maybe 200W/ch amp max would do it. Sure, subs will solve the problem; no question about that. Just that these are full range speakers and should not really need the subs. Unless people are correct here and this unusual 3 sided room is causing issues.

The only other power amp I have on hand at the moment is a Marantz 8077 HT amp. Plus I have a corresponding AV pre the 8805 that I could swap out for the 1509 packing as a pre. 
Alternatively, I’ll need to switch these to the LS10SE preamp or try my heavy duty PMC MB2SE speakers, may give a better result too.