Is There A Device For Home Use That Can Measure How Low The Bass In My Speakers Is?

+2 @hypoman 

@mapman 

Took up guitar and piano a while back so most of my listening is either me warbling badly through my studio monitors or in the car. Not much to contribute here since my hi fi gear is mostly laying silent. However I got an email on this thread and thought the OP might have interest in the SMS-1.  

Thanks, dgluke, for the John Atnkinson Stereophile link. The whole article is interesting and informative. In any case, I did not know about "B weighting"; my SPL meter only gives me a choice between "A" and "C". There are, of course, several other equalization curves in use; "A" and "C" are just the most common. But, as Atkinson remarks at the beginning of the article, "A weighting" does not correspond to perceived loudness levels, which is what I've certainly experienced and pointed out above—and the SPL meters mentioned, and even linked, elsewhere in this thread are all to "A weighted" devices.

As for the relevance of using an SPL meter to judge how low a speaker's frequency response might go, let me quote Atkinson's own words from that same article: "If you plot, say, a loudspeaker's sound-pressure level against frequency for a given input voltage, the result is the typical amplitude or 'frequency' response."

In short, using an SPL meter in conjunction with a low-frequency test track is, indeed, a valid way of determining "how many [H]ertz my speakers measure for bass," in the OP's words.

REW and a UMIK-1 mic.  Software is free, mic is around $100.  Or the Dayton mic mentioned above should work.

The Dayton mic will work beautifully. I have one Great product.