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Originally Posted by 908/930
For the record I did not say that the tubes could not do lo freq. But I do not believe any old juke box can do accurate low freq down to 20hz, I doubt the it's below 40hz. Hard enough for high end speakers to get below 30hz but properly set up subs can do the job extremely well.
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Very few speakers reproduce useful music below 50hz. Only really deep pipe organ or low frequency effects happen below 40hz and that is mostly for film soundtracks. Most of the vinyl produced from 1940-1980 was mixed and mastered on reference monitors that rarely reproduced below 50 hz. The fabled JBL 4311 found in most A list studios had a response of 45-15k +/- 3db.
A Juke box does exactly what it was designed for- play and reproduce hit records designed for radio airwaves to the masses, not audiophile golden ears.
As far as tubes go, I love em and have 3 tube amps in my project studio. They are guitar amps strictly for music production, not music reproduction. After everything gets mixed, mastered, and compressed I see no benefit and cannot hear the difference once EQ'd for sonic parity. I have not seen a tube amp running studio monitors anywhere for at least 40 years. All of my critical listening speakers are bi-amped SS.