50hz deep enough?

I want to correct a misimpression that Rbstehno seems to have taken away from my (and perhaps other) posts: Bookshelf speakers can be quite apppropriate for larger rooms. But no speaker will give you as much bass in a large room as in a small one. So a speaker that gives you adequate bass in a small room might not satisfy in a larger one.

Mechans makes a good point about how low "low bass" is. Most pop music (even heavy metal) has little or nothing in the bottom octave, below 40 Hz. A standard electric bass only goes down to 42 Hz. (Acoustics, depending on size, may reach as low as 32 Hz, I believe.)

A bookshelf speaker that starts rolling off at 80 Hz is still going to output substantial energy an octave lower than that. With room reinforcement, you aren't going to miss much, especially in a small space. Plus, your brain hears the second harmonics, an octave up, and tends to fill in the missing information anyway.

Thanks for all of your guys responses.

I do agree with what Key_metric and Mechans said. I would rather have good synergy and have beuatiful mids and good fast tight bass than the deepest flabby bass.

As far as stands go. I have a pair or Premier stands which are spiked and filled with dry compacted corse sand, when I give them the knuckle test all I get is a dull thud. My speaker cables are Audioquest Hyperlitz Midnights (and older model but they were about $400 USD in their time).

What would you guys say regarding my above post about the two sets of speakers I am considering?

50Hz low end and great mids
or
40 hz low end a little worse mids?

I should also add that this system also is used as a HT about 10% of the time. I sacrifice all in favor of the music. IE. Only my audio gear is plugged into my line conditioner. TV/VCR/DVD are feed from a computer APC backup to avoid adding noise into the unit. I really am all about the music.

Cheers.

Also I should add the generally I listen between 80-90dB and 90-100dB for classical.

I just try to keep it subjectively right. ie. If someone is singing I would like it be be the same level as they were actually in front of me and the same goes for instruments.

Only during classical music peaks would I ever dare to break 100dB, and I would do this once in a blue moon.

I should also add that this has all been mesured in C wieghting with favors the high frenquencies more.

I would buy the one with better midrange every time, especially for classical.

I should add the by far the music I listen to most is Rock. Whether it be hard or soft or acoustic.