Are subs worth the price for music?

The need for subs is the room not the speakers . Power cords and speaker cables are not going to fix a room . Read Dr Earl Geddes white paper on distrusted bass . Yes subs are worth it if used properly .. I use 4 subs .Most people think I am nuts until the hear my room . 

Evening gentlemen.....or ladies, if that be the case :)

My musical tastes run from a to z, classic rock, oldies, blues, folk, classical, new age, world music, country ...depends on the mood of the moment.

Speaker cables are by Bryston. 9 or 10 ga., don't remember now, but beefy.    Speakers are horizontally bi amped. Bryston 4BST feeding the lows, Bryston B-100 feeding the mids and highs.........Bryston amps are known for being good bass amps, so I don't think that's an issue.

Enginedr

I've been reading about the advantages of multiple subs lately. Not sure I have the room space to accommodate that setup, but it sounds like the way to go if you do.

Again, not saying my bass is weak, boomy, etc.........not the case. It's deep, solid and to my ears clean.............Mostly just wondering how a sub or subs would improve/change what I'm hearing now since I've never experienced it in my system.

@shadowcat2016 ....

Mostly just wondering how a sub or subs would improve/change what I’m hearing now since I’ve never experienced it in my system.

Based on your musical tastes and your components/cables...
- if the subs are setup "correctly: - i.e. to augment the Vandi’s - then I doubt the subs would provide too much of an improvement, because "normal music" seldom has frequencies below 26Hz anyway
- however, if you are after "true realism" e.g. to hear the LFE’s of a truck rolling past the recording venue (sometimes present on live concert recordings) then the subs "may provide" some benefit.

Adding subs on a two channel system such as your own is all a matter of personal preference.

FYI - my speakers are rated at 28Hz and I hear the trucks rolling by on a couple of recordings, so I have never considered adding subs. I also like Pipe Organ music, which already shakes the walls, so again - no need for subs

LFE’s, which is what subs are really designed to reproduce, are not really present in most music - unless you like to hear the Digital Cannons at their absolute best on the Telarc version of the 1812 overture :-)

If I had an urge to see what LFE’s were present in music I would probably opt to upgrade to a speaker that can handle a lower frequency, simply because the designers have gone to the trouble of ensuring a flat frequency response. It saves me the time and effort of setting up sub’s, which, from what I have experienced and read,  most people find "challenging"

Personally, I would spend all that cash elswhere.

Regards - Steve

IMO, it will depend on your room size.( Very large and it is a definite, very small...maybe not so much-or at all) With Vandy 3A's, I believe you could certainly get some nice bottom end extension and an increase in dynamic portrayal with a smallish and decent sub. I would think a REL or a JL. Like another member stated above, room acoustic treatment will be beneficial and I would add that first. I would start out with one sub, as adding two is a much more difficult set-up and may not be necessary in your room and for your tastes. 

Worth it? 
Your speaker designer / manufacture certainly thinks so. Even though some of his speaker are equipped with separate equalized low frequency systems they are often showed with his outboard subwoofers and has just introduced a new model. Vandersteen and his dealers understand low frequency reproduction. An outboard Vandy sub will be compatible with your 3As and any future Vandersteen mains upgrade. You can't lose.

-3dB @26Hz. 
Most rooms need that -3dB compensated for. Your room may need a flat low frequency or an increase of +db. The main speakers locations are usually not the best locations for low frequency output to integrate with the room despite the speakers designed ability. The room usually dictates where the location of low frequency origination should be. These locations usually provide a better response at the listening position and a reduction in the rooms bass nodes. 

What can you can expect?
If setup properly you should hear very little difference until you turn the sub/s off. The low frequencies will integrate with your speakers and you should hear improved separation. Integration with your room in the form of seamless increased low frequency gain as it was recorded and not falling off. You'll be surprised at the amount of low frequency that is actually recorded on a variety of recordings. Hearing it well presented in your room is what the subwoofer does.

Lastly, its simply way more fun.