What do you guys think of adding a subwoofer to this system?

+1 Mr. Squires.

Bob, if you are overwhelmed by all the varied responses of models, brands and settings don't despair. Until you have heard your system with a properly set up subwoofer/s you may decide against even using them.   

Even though a subwoofer system takes the music signal and the volume setting from your H390, subwoofer/s are located and tuned independently of the main system. 

Powered subwoofers can have as few as three adjustments as well as a seemingly limitless amount of both internal and external processor control, memory presets and monitoring. Low frequency can be as simple as set-it and forget-it to affordable remotely controlled interactive excitement. 

You seem to have a good relationship with your local dealer. It may be worthwhile to have the dealer do the subwoofer setup process unique to your system and your room as a starting point. Have fun.

Hi guys, thanks again for the help and advise.  So I’m doing some YouTube homework and I find this.

Holy crap!  I need to get out more!

Cheers!

Bob-

Bob, your new system is probably fabulous sounding as is.

I'd go another way and tell you to drop $2400 on four SVS older SB-2000 self-powered sealed subs and do a distributed bass array for low even smooth bass when dialed it. It'll be a whole new world down there.

I'd also recommend high passing the 805s if possible or they'll spend a lot of excess cone movement trying to put out the deep bass they don't need to.

Good luck however you go. I'd recommend a sub, or more, in general.

+1 musicaddict

Ok here is quick update on my progress.  I have done a fair  bit of homework.  Mostly reading this and other audio forums and watching lots of YouTube videos.  Yesterday I visited my local audio shop and listened to a Rel s/510 to try and get a sense of what  I might expect adding a subwoofer or 2 to my system.  This is the subwoofer that Rel recommends pairing with my equipment.  This sub was coupled with McIntosh MA12000 amplifier and a pair of B&W 802 D4.  The audio source was Tidal streaming thru a Node 2i.  We were using the MA12000's DAC.  I listened to a couple of tracks that I know very well and have to say I was not impressed.  The mid range was ok but the upper was not good and the lower end was down right crap.  We turned the Rel on and off and I was still not impressed.  I'm not sure if it was the speakers, the amp, the DAC or the sub.  But together it was not good and very difficult to evaluate what, how or if the sub was contributing.  I do recall listening to that specific McIntosh amp previously and was not impressed.  I did follow up with the rep who auditioned the equipment and he agreed with me that it was less than good. He also said that it was possible the subwoofer was not set up properly.🤣

In any event, I am still working on this and truly appreciate the forum input.

Best,

Bob-