What does a subwoofer solve?


My previous amps were BHK 300 mono blocks.  The bass they provided for my Monitor Audio PL 300ii speakers was exceptional.  For several reasons I replaced the BHKs with a Luxman M900u.  Very happy with the new amp, except for disappointing bass performance.  Would a set of good subwoofers help resolve this, or do subwoofers only address a lack of bass in standard speakers?

Thanks in advance for any advice or suggestions.

lldd

If you don’t have at least 1 - 2 subwoofers you are missing a lot of low frequency energy that you didn’t even know was present 

fiesta75,

"If you don’t have at least 1 - 2 subwoofers you are missing a lot of low frequency energy that you didn’t even know was present ". There are no absolutes in audio. Not too long ago I was a big proponent of using dual subwoofers, not just for bass, but I experienced improvements across the audio spectrum. I recently changed amps and in my system/room I prefer  my system with the new amplifiers, minus the subwoofers over my system with the old amp and dual subwoofers. Based on my experience, I may never own subwoofers again for 2-channel.

Some manufactures of exotically large speaker systems and even some of those who include self powered subwoofers within their speakers often display them with outboard subwoofers. The location of the speakers optimized for the listening position is quite often in a rooms null which can choke the low frequency response. Adding outboard subwoofers in the rooms modes is the solution. 

A host of individually unique room issues can easily be solved depending on the flexibility and level of control of low frequency processing which is not generally focused on by this community. 

@m-db "A host of individually unique room issues can easily be solved depending on the flexibility and level of control ..."

100% agree. And I've experienced it first-hand with a DBA. Getting this right brings a night and day change. It is that big. 

I will say adding a sub done RIGHT makes a huge improvement in not just rap.  Getting to mix right is no easy.  I ended up with the JL Audio CR-1.  Not cheap.  But since the intro digital music a good external cross over is getting hard to find.  this did HT integration as well which was another Issue I had.  

I do have a BHK 250 recently upgraded from Krell KAV 2250.  It does have much more impact than the krell.  

I think you will find adding a sub especially if you can get the load of the mains with xover you will find it works so much better.  

May I ask what PS Audio could not get to work as advertised?