Bookshelf Speakers - When to add a Sub?

[Witterings]

I appreciate room size will make a difference as well but putting that aside for a second, how else would you decide whether to add a sub to a pair of bookshelf speakers.
Would you look at the speaker's lowest frequency and depending o how deep they dig decide from there (in which case what level limitation would you consider it necessary) or are there other more important things to take into account in helping decide?

 

[Integralista]

Hi, I think there is a lot of subjectivity in this topic. For me, speakers with output above 40Hz (+/- 3Hz) do not need subwoofer. Probably except when you listen organ music or grand piano. Than you will be thankful for the sub. More important I think is how do you feel reproduced music from your system. There are bookshelf speakers with subjective "full" sound, where e.g. acoustic bass is not so comprimated. Speaker like Dynaudio or Focal are quite good in this aspect. BR.

 

[Witterings]

Speaker like Dynaudio or Focal are quite good in this aspect.

I was watching a video just before I posted and they said the Dynaudio Evoke 10 were very good for bass in their size range.

 

[Integralista]

Hi, which amp do you have? And how big is the room? Dynaudio need very good amp to shine. BR.