Buying Speakers Based on Specs

There’s some value to the specs and likely the Spendors will go lower. But if you can get the dealer to set up the speakers to approximate your listening room as much as possible it will help. Also, see if there’s a return policy just in case. Last, don’t forget that new speakers take some time to break in. 

Not all manufacturers measure ,low-end extension with the same yardstick, so imo you can’t necessarily make an apples-to-apples comparison between different manufacturers based on specs unless you have a pretty good idea of how they arrived at those specs.

(One manufacturer may assume a generous amount of boundary reinforcement, for instance, while the other does not. One may simply have a more optimistic marketing department than the other. I compete in another market where one of my strongest competitors claims an octave more low-end extension than I do... he makes really good speakers, but our real-world low-end extension is virtually identical.)

In general, a larger speaker will either go deeper or be more efficient, or some combination of the two, assuming both have the same type of bass loading (both ported, for instance).

Duke

It may be a good idea to shop based on specs in your case, since you are looking at one specific spec in particular.

But that does not mean you should buy them based only on specs.

You could end up with a speaker that meets your criteria for that one spec, yet still sound bad in other areas.

Narrow your choices with specs, pic your purchase by what sounds best.

The size of your listening room and type of music you listen to has more to do with your perceived bass response than the specs.